Journal articles: 'Rotary Drum Drying'

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Sonsiri, Anuwit, and Thana Radpukdee. "Effect of Biogas Volume Flow Rate and Burner Temperature on Moisture Content of Organic Fertilizer in a Rotary Drying Process." Advanced Materials Research 1105 (May 2015): 305–10. http://dx.doi.org/10.4028/www.scientific.net/amr.1105.305.

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Different factors can influence the moisture content of product in an organic fertilizer drying process. In this study, biogas volume flow rate and burner temperature were systematically studied in an effort to ascertain their effect on the moisture content of organic fertilizer grain that had been subjected to rotary drum indirect heating procedures. It was found that these two factors did major effect on the moisture content of organic fertilizer in a rotary drum drying process. Additionally, it was also discovered that acceptable organic fertilizer moisture content occurred when the rotary drum drier utilized both the biogas volume flow rate of 0.058 m3/min. in combination with the drying temperature of 500°C while the percentage of biogas blower and burner operation were reduced by 22.67 % and 9.1%, respectively.

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Xiao, Yongli, Hualin Wang, Shengan Deng, Fuyong Su, and Zhi Wen. "Drying characteristics of sludge in a rotary drum for fast-drying application." Thermal Science, no. 00 (2020): 303. http://dx.doi.org/10.2298/tsci200720303x.

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High-temperature metallurgical slag (temperature, > 1450 ?C) and high-moisture sludge (moisture content, > 80 wt%) are common wastes with huge outputs. Many problems, such as high cost, low level of harmlessness, and low efficiency, are encountered in current treatment methods. If these wastes can be recycled, they can be valuable secondary resources. Therefore, using the drum apparatuses to treat these two kinds of wastes is proposed. The process uses waste heat of slag to dry sludge with high moisture content and is a kind of alternative circulation treatment technology in which steel balls are used as ball milling media and intermediate heat carriers. Besides, this technology can break up slag or sludge in real time, thereby ensuring high heat or mass transfer rate. This study presents an experimental investigation of the dynamic drying process of wet sludge mixed with hot steel balls in a rotary drum. The relationship of operation parameters (including sludge moisture content, sludge treatment mass, steel ball diameter, and rotary speed of drum) and drying effect is obtained. There are three kinds of final drying results: completely dried to powder, few sludge agglomerations, and sludge-to-wall adhesion. If the operating parameters are set well, the sludge could be efficiently and completely dried and eventually in powder form.

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Naswir, Naswir, Elvin Hasman, and A. Irwan. "Rotary Electrical Controlled Drum Dryer for Organic Fertilizer Production." Journal of Applied Agricultural Science and Technology 3, no. 2 (August 31, 2019): 320–27. http://dx.doi.org/10.32530/jaast.v3i2.104.

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this research is aim to provide design and prototype of rotary electrical controled drumdrier machine for drying organic fertilizer to increased production capacity and quality by using a source of heat energy from electricity. This machine consists of five main components i.e. drying cylinder, heating unit, support frame, engine and transmission system. Engine specifications are high 130 cm, 720 cm long, and 120 cm wide, cylinder diameter 60 cm, power engine 14 hp, and heating temperature 142 oC. engine performance test are: capasity 805,03 kg/hours, drying rate 27,40 %/hours, noise level 81,54 db. cost analysis result are operational cost 155,06 Rp/kg and Break Event Point 159.219,73 kg/years

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Havlík, Jan, Tomáš Dlouhý, and Michel Sabatini. "THE EFFECT OF THE FILLING RATIO ON THE OPERATING CHARACTERISTICS OF AN INDIRECT DRUM DRYER." Acta Polytechnica 60, no. 1 (March 2, 2020): 49–55. http://dx.doi.org/10.14311/ap.2020.60.0049.

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This article investigates the effect of the filling ratio of the indirect rotary dryers on their operating characteristics. For moist biomass drying before combustion, the use of indirect drum dryers heated by a low pressure steam has proven to be highly suitable. Regarding the design of new dryers, it is necessary to experimentally verify the operating characteristics for specific materials and drying conditions. For this purpose, a set of experiments on a steam heated rotary drum dryer were carried out with green wood chips containing 60 to 66 wt% of moisture. The following operational characteristics of the dryer were experimentally determined: drying curves describing the process, square and volumetric evaporation capacities and drying heat consumptions. Based on the experimental results, the effect of various drum filling by dried material on the mentioned operating characteristics was analysed. On the one hand, higher drum filling ratio increases the drying time, on the other hand, the evaporation capacity also increases, while the specific energy consumption does not significantly alter. The maximum value of the evaporation capacity was reached when the drum was filled to 20 wt%. When the filling ratio was increased to 25 wt%, the evaporation capacity experienced almost no change.

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Havlík, Jan, and Tomáš Dlouhý. "Indirect Dryers for Biomass Drying—Comparison of Experimental Characteristics for Drum and Rotary Configurations." ChemEngineering 4, no. 1 (March 10, 2020): 18. http://dx.doi.org/10.3390/chemengineering4010018.

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This paper focuses on indirect biomass drying. It compares the operating characteristics of a laboratory-scale drum dryer and a pilot-scale rotary dryer. Before the design of an industrial dryer for a specific material, it is important to experimentally prove the process and to determine the drying characteristics of the material. To verify the portability of experimental results for indirect dryers, a drum dryer with indirect electric heating in a laboratory scale was designed and built to test and study the process of indirect drying. Based on the results obtained on a small-scale device, a prototype of a pilot steam-heated rotary dryer was designed and manufactured. A broad range of experiments with green wood chips and wet bark from open-air storage with moisture contents of 50 to 65 wt % were carried out on both dryers. The drying curves indicating the process, the square and volumetric evaporation capacities, and the drying energy consumption were obtained and compared, and the feasibility of indirect drying for these tested types of biomass was confirmed.

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Osorno, Fernando Lozano, and Oliver Hensel. "Drying Homogeneity of Grass Mixture Components in a Rotary Drum." Drying Technology 30, no. 16 (December 15, 2012): 1931–35. http://dx.doi.org/10.1080/07373937.2012.708889.

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Laohavanich, J., S. Yangyuen, and N. Thowjantuek. "An Investigation of Radiant Heat Distribution on Drying Area in the Chamber of Infrared Rotary Dryer." Advanced Materials Research 1044-1045 (October 2014): 232–35. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.232.

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An investigation of radiant heat distribution on drying area in the chamber of infrared-rotary dryer (IRD) was conducted by measuring the values of infrared radiation on drum surface of the dryer chamber and then showed in term of surface temperature (ST). A gas-fired infrared burner (GIB) was used as the heat source, radiated the electromagnetic wave in the length of near-infrared ray. The drum surface was set as an infrared radiant absorbing area, installed with type K thermocouples and set as grid. Different levels of drum diameters (D=700, 900 and 1100 mm.), infrared peak wavelengths (IRP=3.32, 2.97 and 2.70 micron), distances between GIB and drum surface (H=300, 400 and 500 mm.), grid positions on drum surface (longitudinal direction (L) and radial direction (W) = 900 x 900 mm2) were applied. Then, distribution of surface temperature values was analyzed, based on response surface methodology (RSM) obtained from a second order polynomial model. The results showed that IR and H were the main factors affecting the radiant heat distribution. Then, the surface plots of ST levels on the absorbing drum surfaces in the rotary drying chamber were constructed. The contour plot results were indicative of a use for the design and selection of an appropriate size of area for drying with uniform distribution of IR in accordance with user-defined parameters.

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Alikhan, Z., G. S. V. Raghavan, and A. S. Mujumdar. "ADSORPTION DRYING OF CORN IN ZEOLITE GRANULES USING A ROTARY DRUM." Drying Technology 10, no. 3 (June 1992): 783–97. http://dx.doi.org/10.1080/07373939208916475.

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Stroem, L. K., D. K. Desai, and A. F. A. Hoadley. "Superheated steam drying of Brewer’s spent grain in a rotary drum." Advanced Powder Technology 20, no. 3 (May 2009): 240–44. http://dx.doi.org/10.1016/j.apt.2009.03.009.

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Ademiluyi, F. T., and M. F. N. Abowei. "Theoretical Model for Predicting Moisture Ratio during Drying of Spherical Particles in a Rotary Dryer." Modelling and Simulation in Engineering 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/491843.

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A mathematical model was developed for predicting the drying kinetics of spherical particles in a rotary dryer. Drying experiments were carried out by drying fermented ground cassava particles in a bench scale rotary dryer at inlet air temperatures of 115–230°C, air velocities of 0.83 m/s–1.55 m/s, feed mass of 50–500 g, drum drive speed of 8 rpm, and feed drive speed of 100 rpm to validate the model. The data obtained from the experiments were used to calculate the experimental moisture ratio which compared well with the theoretical moisture ratio calculated from the newly developed Abowei-Ademiluyi model. The comparisons and correlations of the results indicate that validation and performance of the established model are rather reasonable.

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PÄÄKKÖNEN, K. "A combined infrared/heat pump drying technology applied to a rotary dryer." Agricultural and Food Science 11, no. 3 (January 3, 2002): 209–18. http://dx.doi.org/10.23986/afsci.5726.

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The short drying time and low product temperature makes it suitable for drying such heat-sensitive materials as herbs and vegetables. The purpose of this work was to develop a small-scale dryer for herbs and vegetables. A prototype rotary dryer combining infrared radiation with a so-called heat pump drying method was applied in drying experiments for several herbs and vegetables. The drying experiments were performed under actual crop production conditions. The drying curves for leaves of birch (Betula spp.), rosebay willowherb (Epilobium angustifolium) and dandelion (Taraxacum spp.) as well as slices of red beet (Beta vulgaris) and carrot (Daucus carota) are presented. During the drying operation, temperature and humidity of the drying air were recorded, as well as the energy consumed in drying. The quality parameters measured were water content, colour and rehydration ratio. In the present rotary dryer design, intermittent irradiation and mixing of the product enable to avoid overheating, which is particularly important for maintaining product quality. In this dryer design the drying drum slowly rotates and simultaneously mixes the product. The infrared heaters are attached to a panel, allowing the product to receive infrared radiation periodically.

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Xie, Lixin, Lingling Yang, Libo Su, Shichang Xu, and Wen Zhang. "A Novel Rotary Dryer Filled with Alumina Ceramic Beads for the Treatment of Industrial Wastewaters: Numerical Simulation and Experimental Study." Processes 9, no. 5 (May 13, 2021): 862. http://dx.doi.org/10.3390/pr9050862.

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In this study, a new type of rotary dryer filled with inert alumina ceramic bead (ACB) fillers was introduced to treat the industrial wastewater, e.g., the high-salt wastewater and landfill leachate. Numerical simulations based on the Discrete Element Method (DEM) on the motion trajectory of ACB fillers in the rotary dryer were conducted, and the parameters of flight structure, rotational speed, and filling degree on the dynamic behavior of ACB fillers were optimized. Under various rotational speeds and filling degrees, the experimental results fit the numerical-simulated results very well. The optimized flight configuration was the straight flights with a length of 65 mm, and the optimized rotational speed and filling degree were 35 rpm and 15%, respectively. Under the optimized condition, both the response variables, the mass of particles in the airborne phase (MAP) and the percentage of occupied area in the airborne region (OAR), have the optimal values, in which the dryer will have a better drying performance. Besides, the lower-right area of the drum is empty which is convenient for the installation of the inlet pipe. The drying experiments of industrial wastewaters were also studied using this ACB filled rotary drum dryer under the optimized conditions. Under the optimal operational conditions, the evaporation capacities of the high-salt wastewater and landfill leachate could reach as high as 49.7 kg/h and 90 kg/h, respectively. This study highlights the integration of evaporation and drying processes of this novel ACB filled rotary dryer and provides an efficient and zero-liquid-emission strategy for the thermal treatment of industrial wastewater.

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KATAYAMA, Shun. "Vacuum Rotary Drum Drying of Sake Cake and Utilization of Dry Material." JOURNAL OF THE BREWING SOCIETY OF JAPAN 91, no. 3 (1996): 146–49. http://dx.doi.org/10.6013/jbrewsocjapan1988.91.146.

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Tarhan, Sefa, İsa Telci, M. Taner Tuncay, and Hakan Polatci. "Product quality and energy consumption when drying peppermint by rotary drum dryer." Industrial Crops and Products 32, no. 3 (November 2010): 420–27. http://dx.doi.org/10.1016/j.indcrop.2010.06.003.

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Hamawand, Ihsan, Wilton Pereira da Silva, Friederike Eberhard, and Diogenes L. Antille. "Issues related to waste sewage sludge drying under superheated steam." Polish Journal of Chemical Technology 17, no. 4 (December 1, 2015): 5–14. http://dx.doi.org/10.1515/pjct-2015-0062.

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Abstract Sewage sludge was dried in a rotary drum dryer under superheated steam. Particle size and moisture content were shown to have significant influences on sticking and agglomeration of the materials. Pouring partially dried sludge (70–80% moisture content, wet basis) directly into the screw feeder of the drum dryer resulted in a significant sticking to the surface of the drum and the final particle size of the product was greater than 100 mm in diameter. The moisture content of this product was slightly less than its initial value. To overcome this issue, the sludge was mixed with lignite at variety ratios and then chopped before being introduced to the feeding screw. It was found that mixing the sludge with lignite and then sieving the chopped materials through a four millimetre mesh sieve was the key to solve this issue. This technique significantly reduced both stickiness and agglomeration of the material. Also, this enabled for a significant reduction in moisture content of the final product.

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Kaensup, Weerachai, Surachate Chutima, and Somchai Wongwises. "EXPERIMENTAL STUDY ON DRYING OF CHILLI IN A COMBINED MICROWAVE-VACUUM-ROTARY DRUM DRYER." Drying Technology 20, no. 10 (January 12, 2002): 2067–79. http://dx.doi.org/10.1081/drt-120015585.

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Kaveh, Mohammad, Yousef Abbaspour-Gilandeh, Ebrahim Taghinezhad, Dorota Witrowa-Rajchert, and Małgorzata Nowacka. "The Quality of Infrared Rotary Dried Terebinth (Pistacia atlantica L.)-Optimization and Prediction Approach Using Response Surface Methodology." Molecules 26, no. 7 (April 1, 2021): 1999. http://dx.doi.org/10.3390/molecules26071999.

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Most agricultural products are harvested with a moisture content that is not suitable for storage. Therefore, the products are subjected to a drying process to prevent spoilage. This study evaluates an infrared rotary dryer (IRRD) with three levels of infrared power (250, 500, and 750 W) and three levels of rotation speed (5, 10, and 15 rpm) to dry terebinth. Response surface methodology (RSM) was used to illustrate and optimize the interaction between the independent variables (infrared power and rotation speed) and the response variables (drying time, moisture diffusivity, shrinkage, color change, rehydration rate, total phenolic content, and antioxidant activity). As infrared power and rotation speed increased, drying time, rehydration rate, antioxidant activity, and total phenolic content decreased, while the other parameters were increased. According to the results, the optimum drying conditions of terebinth were determined in the IRRD at an infrared power of 250 W and drum rotation speed of 5 rpm. The optimum values of the response variables were 49.5 min for drying time, 8.27 × 10−9 m2/s for effective moisture diffusivity, 2.26 for lightness, 21.60 for total color changes, 34.75% for shrinkage, 2.4 for rehydration rate, 124.76 mg GAE/g d.m. for total phenolic content and 81% for antioxidant activity.

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Hendra, Anizar Indriani, Hernadewita, and Y. Rizal. "Assembly Programmable Logic Control (PLC) in the Rotary Dryer Machine for Processing Waste Liquid System." Applied Mechanics and Materials 842 (June 2016): 319–23. http://dx.doi.org/10.4028/www.scientific.net/amm.842.319.

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Programmable Logic Controller (PLC) is widely used to control systems on the manufacturing industry, automotive industry and etc. PLC is used to regulate the production process and machine systems to work simultaneously and continue. PLC has system to regulate the movement of machine components, displacement system of product, system settings motion or displacement of other components. PLC is a control system with some advantages such as simple in design, easy to use and circuit modification, low cost, easy maintenance, high reliability and safe. In this paper, we will focus on the PLC that used in the control of equipment movement on the rotary dryer system for waste liquid processing. PLC will be control the movement of the motor for drum of dryer, heating system, water circulation in the wet scrubber system, vacuum cleaner and smoke systems. All these systems are connected by PLC and working by arranged the setting time of system. The first process, PLC will activate the motion system of motor to drive the dryer drum rotating to left or right side. Then the burner is active for heating the drum of dryer. Effect in this process made smoke and dust happen in the rotary dryer system. The pump automatically will be activating to spray water on a wet scrubber system to catch the dust and smoke. Dust and smoke will be inhaled by the blower and flow back into the rotary dryer machine. Therefore there is no smoke and dust flowing into the environment. The results show that the PLC can be control the motion system and processes machine rotary dryer to drying the waste liquid in short time. Such as 20 minutes to 5 liters of liquid waste volume and 30 minutes to 15 liters and made the waste liquid be friendly environment.

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Ahmad Farid, Mohammed Abdillah, Ahmad Muhaimin Roslan, Mohd Ali Hassan, Farhana Aziz Ujang, Zarry Mohamad, Muhamad Yusuf Hasan, and Shirai Yoshihito. "Convective sludge drying by rotary drum dryer using waste steam for palm oil mill effluent treatment." Journal of Cleaner Production 240 (December 2019): 117986. http://dx.doi.org/10.1016/j.jclepro.2019.117986.

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Kaveh, Mohammad, Yousef Abbaspour-Gilandeh, and Guangnan Chen. "Drying kinetic, quality, energy and exergy performance of hot air-rotary drum drying of green peas using adaptive neuro-fuzzy inference system." Food and Bioproducts Processing 124 (November 2020): 168–83. http://dx.doi.org/10.1016/j.fbp.2020.08.011.

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Scherer, Viktor, Martin Mönnigmann, Marc Oliver Berner, and Florian Sudbrock. "Coupled DEM–CFD simulation of drying wood chips in a rotary drum – Baffle design and model reduction." Fuel 184 (November 2016): 896–904. http://dx.doi.org/10.1016/j.fuel.2016.05.054.

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Cieśla, Antoni, Wojciech Kraszewski, Mikołaj Skowron, Agnieszka Surowiak, and Przemysław Syrek. "Application of electrodynamic drum separator to electronic wastes separation." Gospodarka Surowcami Mineralnymi 32, no. 1 (March 1, 2016): 155–74. http://dx.doi.org/10.1515/gospo-2016-0007.

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AbstractStatic electric fields are used, among others, in technological processes such as electric separation. Electrodynamic separation is a process of separating two or more solid phases of various physical properties by electric field forces. The advantage of electrodynamic separation is possibility of obtaining separation of individual components in dry conditions. This eliminates many operations such as thickening, dewatering, hydrotransportation, additional drying which cause higher energy consumption and higher separation process costs. Efficiency of beneficiation depends on many factors such as: electric properties of feed components, feed particle size distribution, drum rotary speed, electric field intensity in working space of separator, configuration of electrodes or surrounding conditions.The paper presents the working of high-voltage drum separator. The analysis of electric field distribution in separator working space was done. Additionally, distribution of forces acting on particles of dielectric and conductive properties was examined, trajectories of charged particles movement were presented too. The laboratory investigations of electronic wastes were performed in two particle fractions: 0.25–0.5 mm and 0–0.25 mm. It was observed that as a result of selective charging of particles they separate according to surface ability to electrifying what allows to obtain selective separation of components being so-called electronic wastes. The application of electrodynamic drum separator allows to separate such elements as Ti, Cu, Fe, Pb, Sn from plastics occurring in electronic wastes.

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Kar, Sudarshanna, Arun S. Mujumdar, and Parag P. Sutar. "Aspergillus niger inactivation in microwave rotary drum drying of whole garlic bulbs and effect on quality of dried garlic powder." Drying Technology 37, no. 12 (October 8, 2018): 1528–40. http://dx.doi.org/10.1080/07373937.2018.1517777.

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Rezaei, Hamid, Jim Lim, and Shahab Sokhansanj. "Comparison of Drying Rates of Ground Western Red Cedar with Hemlock, Birch, Aspen, and Spruce/Pine/Douglas Fir." Applied Engineering in Agriculture 36, no. 2 (2020): 159–65. http://dx.doi.org/10.13031/aea.13684.

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HighlightsWRC and SPF generate the largest fraction of small particles (<0.5 mm) during grinding.WRC is slightly low in total sugars, high in lignin content (should make durable pellets), and high in extractives.Aspen followed by WRC has the highest drying rate and the shortest drying time amongst all samples.Smoke point is similar for all wood species and is ~180°C.Abstract.Western red cedar () and yellow cedar () are among the most valuable tree species in British Columbia. These species make up about 20% of the coastal timber volumes and mostly are used as lumber for construction applications where resistance against decay is important. The use of red cedar for pellet production has been uncertain because it appears cedar has a tendency to cause fires in rotary drum dryers when compared to other wood species like pine and Douglas Fir. The scientific reasons for the reported fire incident are not known. The goal of the current study is to investigate the drying rates and the range of combustion temperature for western red cedar and five other wood species that either are used or have potential to be used for palletization purposes in British Columbia. Red cedar and Spruce/Pine/Fir (SPF) generate the largest fraction of small particles (<0.5 mm) during grinding. Almost 93% of cedar particles are less than 1 mm. Cedar has a high carbon content and low oxygen content that causes cedar has higher calorific value than other species. During a drying process, aspen following by cedar has the highest drying rate and the shortest drying time amongst all samples. The smoke point is similar for all wood species and is ~180°C. So, in the case of high temperature drying (beyond the smoke point) of mixed feedstocks with similar size, red cedar dries faster and starts smoking at dryer output. Keywords: Chemical composition, Drying rate, Physical characterization, Smoke point, Western red cedar.

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Behera, G., and P. P. Sutar. "Development of a new pre-drying method of accelerated water absorption and partial gelatinization of starch in paddy using pulsed microwave-water applications in a microwave rotary drum dryer." Drying Technology 37, no. 6 (December 12, 2018): 707–21. http://dx.doi.org/10.1080/07373937.2018.1456450.

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Trojosky, M. "Rotary drums for efficient drying and cooling." Drying Technology 37, no. 5 (January 7, 2019): 632–51. http://dx.doi.org/10.1080/07373937.2018.1552597.

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Silvério, Beatriz Cristina, E. B. Arruda, Valéria V. Murata, J. M. F. Façanha, and Marcos A. S. Barrozo. "Fertilizer Drying in a Concurrent Rotary Dryer." Materials Science Forum 660-661 (October 2010): 76–81. http://dx.doi.org/10.4028/www.scientific.net/msf.660-661.76.

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Drying being one of the most energy-intensive operations is of great importance in the fertilizer industry. Rotary drums are often used for drying in fertilizer industry. This dryer consists basically of a cylindrical shell inclined at a small angle to the horizontal. Wet feed is introduced into the upper end of the dryer and the dried product withdrawn at the lower end. The inside of the shell is equipped with lifting flights. In the present work, the drying of granulated fertilizers (GTSP) using a concurrent rotary dryer was investigated experimentally. The fluid dynamics aspects and its influence on dryer performance were analyzed. The results obtained show that the concurrent dryer residence time and hold-up were lower than the ones of the counter-current dryer. The drying rate of the two dryer’s configurations was very similar, but the counter-current configuration removes a larger quantity of water from the particles of fertilizers.

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Отрошко, Сергей, Sergey Otroshko, Алексей Шевцов, Alexey Shevtsov, Николай Шариков, Nikolay Sharikov, Александр Милёв, and Alexander Milev. "CONSTRUCTIVE FEATURES OF THE DEVICE FOR TREATING FODDER GRASSES IN THE PROCESS OF MOWING." Adaptive Fodder Production 2019, no. 3 (September 5, 2019): 30–34. http://dx.doi.org/10.33814/afp-2222-5366-2019-3-30-34.

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For the treatment of fodder grasses during mowing on modern mowers install various conditioners designed to accelerate their wilting. The most extended among them are pressing rollers and shafts, equipped, as a rule, with various hammer-type beats. However, these conditioners installed on rotary mowers have a difficult drive, high mass and price. It is possible to eliminate these lacks by the use of a new conditioner [1], developed in the Federal Williams Research Center for Fodder Production and Agroecology (Moscow region), and equipped with beats for mechanical action on the stalks of grasses in the process of mowing. Beats are represent a pieces of round-link chains fixed in the upper part of cylindrical hollow drums installed vertically on the cutting discs of the rotary mower. The innovative dynamic action conditioner to the rotary mower KR-2,4M provides acceleration of field drying of the mowed grasses due to strengthening of moisture output by plants, especially the traumatized stalks which usually dry more slowly, than leaves. The constructive features of the conditioner and the principle of its action are described.

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Vongsurakrai, Varatus, and Saiyavit Varavinit. "Product of Spray Dried Rice Starch (Era-Tab^®) and its Utilization in Pharmaceutical Industry." Advanced Materials Research 93-94 (January 2010): 672–74. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.672.

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Spray dried rice starch (SDRS ) (Era-Tab ®)was prepared by spray drying of rice starch at a suitable condition. Scanning electron microscope revealed that particle of SDRS was spherical and made up entirely agglomerates of rice starch grains. Tablet properties of SDRS were studied and compared with those of three commercially available direct compression fillers. Hardness, friability, and disintegration of the tablets were evaluated. It was found that SDRS was inferior to only one of them. Segregation tendency of direct compression formulation containing SDRS as a major component was tested. A blend of propranolol hydrochloride and SDRS was tableted on an rotary tablet press. Dissolution and drug content were evaluated. The results indicated that segregation did not occur over a two-hour period. To demonstrate the uniform distribution of low-dose drug, a mixture of SDRS and chlorpheniramine maleate were prepared at 4% of the drug. The tablets were assayed for the content uniformity and found to be excellent. Since direct compression process avoided the use of heat and moisture which were normally employed in wet granulation process, aspirin which was a heat and moisture sensitive drug was formulated with the use of SDRS. The tablets obtained were found to be satisfactory. Therefore, it was concluded that it could be employed successfully as a filler in direct compression tableting

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Sekiya, Noboru, Nobutaka Abe, Masanobu Yamamoto, and Kazuhisa Takeda. "Improved Stability of OPALMON® Tablets under Humid Conditions. III: Application of the Rotary Vacuum Drying Method to Dry Opalmon Tablets." CHEMICAL & PHARMACEUTICAL BULLETIN 55, no. 4 (2007): 546–50. http://dx.doi.org/10.1248/cpb.55.546.

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Zainal Abidin, Ana Sakura, Mohamad Zulhatta Kifli, Annisa Jamali, and Rasli Muslimen. "Development of Black Pepper Rotary Drum Dryer System." International Journal of Integrated Engineering 12, no. 7 (October 31, 2020). http://dx.doi.org/10.30880/ijie.2020.12.07.002.

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Rotary drum dryer has been identified as hygienic and practical method to dry black pepper. The quality of black pepper is defined based on the chemical properties and moisture content. This research aims to develop a control system for black pepper rotary drum dryer. The dried pepper should meet the specific 12% moisture content while the heating temperature must be kept below 550C. The requirement of 12% moisture content is equivalent to 30% of the remaining weight of the pepper (final weight). The developed system uses Arduino Mega 2560 REV board as a microcontroller. A type K thermocouple with MAX6675 thermocouple amplifier and S-type load cells (TAS501) with HX711 load cell amplifier are used as input sensor to microcontroller. The system keeps measuring the current weight until it hit the targeted final weight. Two set of experiments that are using 500 g and 1500 g of pre-treated pepper were conducted to verify the system. As a result, the dryer was successful to work within the desired temperature and it stop operating just after the samples reached 12% of the moisture content. The finding has proven a shorten of drying time from 4 to 7 days when using the traditional method to the current 3 – 5 hours only when using the developed system. Hence, this is an improved method achieved to a quick drying of the black pepper.

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Antipov, Sergey, Andrey Klyuchnikov, and Viktor Panfilov. "System modelling of non-stationary drying processes." Foods and Raw Materials, October 14, 2019, 93–106. http://dx.doi.org/10.21603/2308-4057-2019-1-93-106.

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The kinetics of the drying process in continuous drum dryers differs from the drying of single objects in a batch mode. Drying process is affected by too many factors; hence, it is practically impossible to obtain an analyt- ical solution from the initial equations of heat and mass transfer, since the duration of drying depends on the opera- ting parameters. Therefore, it is of high theoretical and practical importance to create a highly efficient rotary drum dryer. Its design should be based on an integrated research of non-stationary processes of heat and mass transfer, hydrodynamics of fluidized beds, and drying kinetics in the convective heat supply. The experiment described in the present paper featured sunflower seeds. It was based on a systematic approach to modelling rotary convective drying processes. The approach allowed the authors to link together separate idealized models. Each model characterized a process of heat and mass transfer in a fluidized bed of wet solids that moved on a cylindrical surface. The experiment provided the following theoretical results: 1) a multimodel system for the continuous drying process of bulky mate- rials in a fluidized bed; 2) an effective coefficient of continuous drying, based on the mechanics of the fluidized bed and its continuous dehydration. The multimodel system makes it possible to optimize the drying process according to its material, heat-exchanger, and technological parameters, as well as to the technical and economic characteristics of the dryer.

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FELTRIM, FERNANDA, RONALDO L. S. IZZO, JULIANA L. ROSE, ANDRÉ B. MACHADO, and SHEILA REGINA ORO. "Evaluation of the bio-drying process of municipal solid waste using rotating drums Bio-drying rotary drum." Anais da Academia Brasileira de Ciências 93, no. 4 (2021). http://dx.doi.org/10.1590/0001-3765202120200085.

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Tan, Daniel Leslie, Gener Sebial, and Felix Amestoso. "Optimization of the factors affecting the drying rate of cassava grates in a rotary drum dryer." Annals of Tropical Research, October 31, 2007, 119–36. http://dx.doi.org/10.32945/atr2928.2007.

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This study determined the optimum effects of temperature, drum rotation and loading rate on the drying rate of cassava grates using the rotary drum dryer in removing moisture from cassava grates. A Central Composite Design was employed to evaluate a total of 15 fractional treatments derived from the 27 treatment combinations of temperature (75, 94 and 113°C), drum rotation (15, 20 and 25 RPM) and loading rate (5, 15, and 25 kg/h). The response surface regression obtained optimum conditions of the factors and predicted values on the stationary point on water loss as well as the rate of water removal. Results from the canonical analysis of response surface on plain water loss show an optimum combination of temperature of 107°C, drum rotation of 23 RPM and loading rate of 24 kg/h. At 25 kg/h loading rate regardless of any variation of temperature and drum rotation, the rotation of the drum could not be sustained due to heavy load caused by the accumulated weight of the grates inside the drums. The optimum conditions and predicted response values for rate of plain moisture loss were observed to be: temperature of 108°C, drum rotation of 23 RPM, loading rate of 26 kg/h. Response surface plots show the opposite effects between loading rates and temperature on the plain water loss as well as the rate of moisture loss. Response surface plots also revealed that RPM has no effect on the plain water loss and rate of moisture removal

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Taiwo, Ademiluyi Falilat, M. F. N. Abowei, Y. T. Puyate, and S. C. Achinewhu. "Effects of Drying Parameters on the Drying Kinetics of Fermented Ground Cassava Using a Rotary Dryer." International Journal of Food Engineering 6, no. 6 (December 14, 2010). http://dx.doi.org/10.2202/1556-3758.1623.

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The effects of drying parameters on the drying kinetics of fermented ground cassava were studied. Fermented ground cassava (TMS 30572) was dried in a bench scale rotary dryer at different inlet air temperature (115-230°C), inlet air velocity (0.83-1.55 m/s), feed drive speed (12-100 rpm), drum drive speed (8-18 rpm), relative humidity of inlet air (50 to 80 percent), and mass of feed (50-500 g). It is shown that inlet air temperature and inlet air velocity have the most significant effects on the drying rate of fermented ground cassava. A model which predicts the drying rate of fermented ground cassava as function of inlet air temperature and inlet air velocity is presented. Predictions of the model are compared with experimental data, and good agreement is obtained. For proper gelatinization of fermented cassava mash, the inlet air temperature should be within the range 140-230°C, low inlet air velocity (< 1.55 m/s), low drum drive speed (8-12 rpm), moderate air humidity (50 to 65 percent), and low feed drive speed of about 12 rpm. For high mass of feed (> 500 g), inlet air temperature in the range 190-230°C is recommended for proper gelatinization of fermented cassava.

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Kaveh, Mohammad, and Yousef Abbaspour‐Gilandeh. "Impacts of hybrid (convective‐infrared‐rotary drum) drying on the quality attributes of green pea." Journal of Food Process Engineering 43, no. 7 (May 12, 2020). http://dx.doi.org/10.1111/jfpe.13424.

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Wae-hayee, Makatar, Kirttayoth Yeranee, Wasu Suksuwan, Ameen Alimalbari, Somchai Sae-ung, and Chayut Nuntadusit. "Heat transfer enhancement in rotary drum dryer by incorporating jet impingement to accelerate drying rate." Drying Technology, March 20, 2020, 1–11. http://dx.doi.org/10.1080/07373937.2020.1742150.

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Behera, Gitanjali, and Parag P. Sutar. "Starch gelatinization and drying of paddy using microwave rotary drum dryer: Optimization, kinetics, and cooking studies." Drying Technology, April 7, 2020, 1–17. http://dx.doi.org/10.1080/07373937.2020.1741605.

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Демчук, М. Б., С. М. Гуреєва, and Т. А. Грошовий. "СУЧАСНИЙ СТАН СТВОРЕННЯ, ВИРОБНИЦТВА ТА ДОСЛІДЖЕННЯ ТАБЛЕТОВАНИХ ЛІКАРСЬКИХ ПРЕПАРАТІВ Повідомлення 19. Сучасний стан розробки та дослідження мультипартикулярних пелетних систем." Фармацевтичний часопис, no. 3 (October 7, 2015). http://dx.doi.org/10.11603/2312-0967.2015.3.4935.

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MODERN STATE OF CREATION, PRODUCTION AND RESEARCH OF DRUGSM.B. Demchuk, S.M. Gureyeva1, T.A. HroshovyiTernopilStateMedicalUniversityby I.Ya. Horbachevsky1JSC “Farmak”Notice 19. The current state of development and research of multiple unit pellet systems.Summary: the literature on technological aspects of creations of pellets, features of compression pellet to obtain multiple unit pellet systems are summarized.Keywords: pellets, methods of pellets, pellet pressing, multiple unit pellet systems.Introduction. Oral modified-release multiple-unit dosage forms have always been more effective therapeutic alternative to conventional or immediate release single-unit dosage forms. With regards to the final dosage form, the multiparticulates are usually formulated into single-unit dosage forms such as filling them into hard gelatin capsules or compressing them into tablets.Pelletization is a technique that enables the formation of spherical beads or pellets with a mean diameter usually ranging from 0.5 to2.0 mm. These pellets can evantually be coated and very often used in controlled-release dosage forms. The use of pelletization and pellets leads to an improvement in the flowability, appearance and mixing properties, thus avoiding excessive dust and reducing segregation and, generally, eliminating undesirable properties and improving the physical or chemical properties of fine powders.The pharmaceutical industry has developed a great interest in pelletization due to a variety of reasons:– prevention of segregation of co-agglomerated components, resulting in an improvement of the uniformity of the content;– prevention of dust formation;– increasing bulk density and decreasing bulk volume;– the defined shape and weight improves the appearance of the product;– improvement of the handling properties, due to the free-flowing properties;– improvement of the hardness and friability of pellets;– controlled release application of pellets due to the ideal low surface area-to-volume ratio that provides an ideal shape for the application of film coatings.Pellets are prepared by different techniques, such as extrusion and spheronisation, rotogranulation, solution, suspension or powder layering, spray-drying or spray-congealing.Extrusion / spheronisation is a multistage process for obtaining pellets with uniform size from wet granulates (extrudates). The process is more labour-intensive and more expensive than the conventional wet-granulation technique, as its use should be limited only to the production of spherical pellets for controlled release of drugs.The fluid-bed granulation consists in the spraying of a granulation solution onto the suspended particles, which then are dried rapidly in the hot air stream.Rotogranulation is one of the most recent methods for the production of spheroids. The single-unit spheronizing system can be described using terms like centrifugal granulator, rotary fluidized-bed granulator, rotary fluid bed, rotary processor or rotor granulator.Layering a suspension or a solution of a drug on a seed material (usually, a coarse crystal or nonpareil) can produce pellets that are uniform in size distribution and generally posess very good surphace morphology. These characteristics are especially desirable when pellets will be coated for the purpose of achieving a controlled release.Dry powder layering is similar to the solution or suspension layering. Instead of these dispersions, the layering is performed using a drug powder.Spray-drying represents another process with limited application in the development of pharmaceutical pelletized products, based on globulation. During spray-drying, a drug solution or suspension is sprayed, with or without excipients, into a hot-air stream, generating dry and highly spherical particles.Spray-congealing (spray-chilling) is a technique similar to spray-drying. Spray-congealing is a process in which a drug is allowed to melt, disperse or dissolve in hot melts of gums, waxes, fatty acids or other melting solids. The dispersion is then sprayed into a stream of air and other gases with a temperature below the melting point of the formulation components.Conclusions. The basic requirements and approaches to development multiple unit pellet system, aspects and examples receipt of pellets and tablets based on them are described.

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Ari, N. K. N. A., A. S. S. Nahak, and I. G. A. G. C. A. Prabawa. "FORMULASI TABLET UMBI BAWANG MERAH YANG BERPOTENSI SEBAGAI ANTIHIPERGLIKEMIA." Jurnal Kimia, July 31, 2020, 200. http://dx.doi.org/10.24843/jchem.2020.v14.i02.p15.

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Shallot bulbs (Allium cepa L.) can be used as a diabetes mellitus drug because they contain flavonoid compound which is hypoglycemic. Shallot bulbs are formulated into tablet preparations to produce benefits in terms of practicality and accuracy of therapeutic doses. The binder is very important in binding particles into a granule and the granules later become a compact tablet. The purpose of this study was to determine a good formulation for antidiabetic tablets of onion tuber extract. Shallot extract was obtained from the maceration process with 96% ethanol for 3 days, and then concentrated with a rotary evaporator. Before extraction, standardization of simplicity was carried out which included determination of drying losses, total ash content, acid insoluble ash content, water-soluble extract content and ethanol soluble extract content. The extract was then standardized (water content, total ash content and acid insoluble ash content) and phytochemical screening was performed which showed positive results (+) for steroids and triterpenoids, saponins, tannins, and flavonoids. Tablets were made by wet granulation method with PVP binder 3%, 4%, and 5%. The physical properties of the granules were tested including flow time, angle of rest, compressibility index and particle size distribution test. The tablets were analyzed for physical properties including weight uniformity, uniformity in size, and friability. The results of this study indicated that the higher the binder used the more the physical properties of the tablet were affected. The formula that met the test requirements for physical properties of the tablets was PVP at a concentration of 5%. Keywords: Allium cepa L., binder, PVP, onion tuber extract, tablets Umbi bawang merah (Allium cepa L.) dapat digunakan sebagai obat diabetes mellitus karena mengandung senyawa flavonoid yang bersifat hipoglikemia. Umbi bawang merah diformulasikan menjadi sediaan tablet untuk menghasilkan manfaat dari segi kepraktisan dan ketepatan dosis terapi. Bahan pengikat sangat berperan penting dalam mengikat partikel menjadi suatu granul dan granul nantinya menjadi suatu tablet yang kompak. Tujuan dari penelitian ini adalah untuk mengetahui formulasi yang baik untuk tablet antidiabetes ekstrak umbi bawang merah. Ekstrak umbi bawang merah diperoleh dari proses maserasi dengan etanol 96% selama 3 hari, kemudian dipekatkan dengan rotary evaporator. Sebelum diekstraksi dilakukan standarisasi simplisia yang meliputi penentuan susut pengeringan, kadar abu total, kadar abu tidak larut asam, kadar sari larut air, dan kadar sari larut etanol. Ekstrak kemudian di standarisasi (kadar air, kadar abu total, dan kadar abu tidak larut asam) serta dilakukan skrinning fitokimia yang menunjukan hasil positif (+) terhadap steroid dan triterpenoid, saponin, tannin, dan flavonoid. Tablet dibuat dengan metode granulasi basah dengan bahan pengikat PVP 3%, 4%, dan 5%. Sifat fisik granul yang diuji meliputi waktu alir, sudut diam, indeks kompresibilitas dan uji distribusi ukuran partikel. Tablet dianalisis sifat fisiknya meliputi keseragaman bobot, keseragaman ukuran, dan kerapuhan. Hasil penelitian ini menunjukan bahwa semakin tinggi pengikat yang digunakan mempengaruhi sifat fisik dari tablet. formula yang memenuhi persyaratan uji sifat fisik tablet adalah PVP pada konsentrasi 5%. Kata kunci: Allium cepa L., bahan pengikat, PVP, ektrak umbi bawang merah, tablet

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Journal articles on the topic 'Rotary Drum Drying'

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