Journal articles: 'Pneumatic conveying system'

1

Toomey, Christopher G. "Pneumatic Conveying System Optimization." IEEE Transactions on Industry Applications 50, no. 6 (November 2014): 4319–22. http://dx.doi.org/10.1109/tia.2014.2346695.

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Tan, Sheng Ming, Bin Chen, Kenneth Charles Williams, and Mark Glynne Jones. "Analysis of Low Velocity Dense Phase Pneumatic Conveying System to Extend System Conveying Capability." Advanced Materials Research 239-242 (May 2011): 112–15. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.112.

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This paper reports the current development of technologies to analyse the conveying performance of bypass low velocity dense phase pneumatic conveying system for transporting powder bulk materials and slug flow low velocity dense phase pneumatic conveying system for transporting granular sized bulk materials. It reveals that the bypass system can be operated at a lowered air velocity than conventional pipe line and slug flow system can be also controlled to operate at a lower velocity zone. Hence these technologies have the potential to extend the conveying capability of a pneumatic conveying system to a broader range of materials, also provide better performance in reduction in pipe wear and product degradation.

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Mason, David J., Predrag Marjanovic, and Avi Levy. "A simulation system for pneumatic conveying systems." Powder Technology 95, no. 1 (January 1998): 7–14. http://dx.doi.org/10.1016/s0032-5910(97)03310-x.

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Li, Zhi Hua, Yan Qing Liu, Peng Xia, and Li Ma. "Experimental Research on Carbon Black Flowing in Pneumatic Conveying System." Advanced Materials Research 87-88 (December 2009): 256–62. http://dx.doi.org/10.4028/www.scientific.net/amr.87-88.256.

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The article analyses the main factors such as the species and character of the carbon black, the conveying pressure and gas-flow rate which influence the flow character of carbon black during pneumatic conveying. And also studies the flow character of carbon black in dense phase pneumatic conveying system with experiment. It raises the view that the carbon black with narrow particle diameter distribution, especially with bigger size is favorable for saving energy and reducing fragmentation; the conveying pressure approach lowest point should be chosen during carbon black pneumatic conveying, and the quantity of elbow pipe should be used as less as possible; on condition that the conveying capacity is guaranteed, the lower air feeding volume is preferable; the higher the conveying pressure is, the lower the fragmentation of the carbon black will be. The article also supplies the reference for technology parameter choosing and carbon black conveying system design.

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Li, Zhi Hua, Zong Xiang Peng, and Zhou Li. "Analysis and Study on the Pulsed Solid-Plug Phase Pneumatic Conveying." Key Engineering Materials 501 (January 2012): 484–88. http://dx.doi.org/10.4028/www.scientific.net/kem.501.484.

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Introduced the pneumatic conveying devices and conveying principles when conveying phase is about pulsed solid-plug, analyzed the flow action of solid-plug and the relationship between the conveying parameters while conveying, provided a reference for the correct design and use of this type of pneumatic conveying system.

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Jones, Mark Glynne, Bin Chen, Kenneth Charles Williams, Ahmed Abu Cenna, and Ying Wang. "High Speed Visualization of Pneumatic Conveying of Materials in Bypass System." Advanced Materials Research 508 (April 2012): 6–10. http://dx.doi.org/10.4028/www.scientific.net/amr.508.6.

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Dense phase pneumatic conveying is preferable over dilute phase conveying in many industries as lower transport velocities are beneficial due to reduced attrition of the particles and reduced wear. However, dense phase conveying is critically dependent on the physical properties of the materials to be conveyed. For many materials which are either erosive or fragile, they do not exhibit the physical properties required to be conveyed reliably in a low velocity, dense phase flow regime. This can be serious problem in the food, chemical and pharmaceutical industries. One satisfactory approach which has been widely applied is the use of bypass systems. Bypass pneumatic conveying systems provide the capacity of transporting some materials that are not naturally suitable for dense phase flow. Bypass pneumatic conveying systems also provide a passive capability to reduce minimum particulate transport velocities. In this study, pneumatic conveying experiments were carried out in a 79 mm diameter main pipe with a 27 mm inner diameter bypass pipe with orifice plate flute arrangement. Alumina, fly ash and sand were conveyed in the tests. High speed camera visualization was employed to study the flow regimes of bypass pneumatic transport systems and investigate the mechanism of material blockage inhibition provided by these systems. For alumina and fly ash, it was found that particulate material blockages were inhibited in bypass systems due to the air penetration into the particulate volume as a result of orifice plate airflow resistance. For the bypass pneumatic conveying of sand, the splitting of a long plug into two smaller plugs was observed. One of the primary concerns of bypass system is the wear of the bypass line. Material such as alumina is inherently abrasive by nature. For internal bypass systems, there is limited ability to monitor the state of the inner bypass tube while in operation. The particle velocity in the pipeline has been measured from the high speed video of the flow. The experimental result also showed that the conveying velocity of bypass system is much lower when compared conventional single bore pipelines. Based on the models developed for the assessment of service life of pneumatic conveying pipelines, the thickness loss of the bypass pipe has been estimated. It has been estimated that for a 3mm bypass tube wall thickness, a wear hole is created in approximately 2.5 years for a particle velocity of 3 m/s and 4 months for a particle velocity of 10 m/s.

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Karlicic, Nikola, Aleksandar Jovovic, Dejan Radic, Marko Obradovic, Dusan Todorovic, and Miroslav Stanojevic. "The Effect of Permeability on Lignite Fly Ash Pneumatic Conveying System Design." Revista de Chimie 69, no. 2 (March 15, 2018): 341–45. http://dx.doi.org/10.37358/rc.18.2.6103.

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The aim of this experimental study was to evaluate the effect of permeability on the mode of flow that lignite fly ash will support in a pneumatic conveying pipeline. This research was initiated by recurring problems with the long distance and high capacity low grade lignite ash pneumatic conveying system at the 1200 MWe thermal power plant, such as clogging, unsteady flow mode, significant increase of velocity due to pressure drop and erosive wear of pipeline. Ash samples were taken during pneumatic conveying system clogging for further analysis. The experiment was limited to measuring parameters that provide data to determine minimum fluidizing velocity and permeability. The results showed very heterogeneous materials of group B by Geldart, what caused specific phenomenon during the experimental fluidization tests. Minimum fluidizing velocity for this kind of material is not authoritative for defining pneumatic conveying system, since extremely heterogeneous materials at this air speed will remain stationary or will convey very slow or with stoppage, and that required velocities are from 10 to 15 times higher than minimum fluidizing velocity. According to the results, this ash is the most suitable for dense phase pneumatic conveying.

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Yang, Daolong, Yanxiang Wang, and Zhengwei Hu. "Research on the Pressure Dropin Horizontal Pneumatic Conveying for Large Coal Particles." Processes 8, no. 6 (May 30, 2020): 650. http://dx.doi.org/10.3390/pr8060650.

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As a type of airtight conveying mode, pneumatic conveying has the advantages of environmental friendliness and conveying without dust overflow. The application of the pneumatic conveying system in the field of coal particle conveying can avoid direct contact between coal particles and the atmosphere, which helps to reduce the concentration of air dust and improve environmental quality in coal production and coal consumption enterprises. In order to predict pressure drop in the pipe during the horizontal pneumatic conveying of large coal particles, the Lagrangian coupling method and DPM (discrete particle model) simulation model was used in this paper. Based on the comparison of the experimental results, the feasibility of the simulation was verified and the pressure drop in the pipe was simulated. The simulation results show that when the flow velocity is small, the simulation results of the DPM model are quite different from that of the experiment. When the flow velocity is large, the large particle horizontal pneumatic conveying behavior predicted by the model is feasible, which can provide a simulation reference for the design of the coal pneumatic conveying system.

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Li, Yong, Hong Jiang Li, and Guang Li. "Experimental Research of Granular Silica Pneumatic Conveying System in Tyre Factory." Key Engineering Materials 561 (July 2013): 244–49. http://dx.doi.org/10.4028/www.scientific.net/kem.561.244.

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Through the experimental research of granular silica in dense phase pneumatic conveying in the tyre plants, the characteristic parameters of granular silica pneumatic conveying have been obtained. By adjusting the main and bypass pipe pressure values, the stable plug flow conveying of granular silica can be realized, which considerably reduces the broken ratio of the granular silica. The plug flow conveying will be even more stable, when the opening blow tank pressure is set at zero. Additionally the same research has also proven that bypass valves open pressure in the end of pipeline will affect the stability of the entire conveying system as well.

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Karličić, Nikola, Marko Obradović, Dušan Todorović, Dejan Radić, Aleksandar Jovović, and Miroslav Stanojević. "Impact of particle size distribution of material on pneumatic conveying operation on example of ground phosphate." Procesna tehnika 32, no. 2 (December 29, 2020): 32. http://dx.doi.org/10.24094/ptc.020.32.2.32.

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Phosphates are essential in the agricultural sector and about 95% of the world production is used in fertilizer industry. After grinding, phosphate ore, as well as any other bulk material is required to be transported to further processing. Pneumatic conveying systems are preferred over other mechanical systems due to their usage convenience. Different types of phosphate rocks, as well as other just seemingly the same materials, may widely differ in their characteristics. Therefore, physical properties of bulk material must be taken into the consideration to achieve reliable pneumatic conveying system operation and avoid possible problems. This paper will address problems with pneumatic conveying of ground phosphate that occurred in fertilizer production plant.

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11

Li, Hui, and Yuji Tomita. "An Experimental Study of Swirling Flow Pneumatic Conveying System in a Vertical Pipeline." Journal of Fluids Engineering 120, no. 1 (March 1, 1998): 200–203. http://dx.doi.org/10.1115/1.2819649.

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A swirling flow is adopted for a vertical pneumatic conveying system to reduce conveying velocity, pipe wear, and particle degradation. An experimental study has addressed the characteristics of swirling flow pneumatic conveying (SFPC) for the total pressure drop, solid flow patterns, power consumption, and additional pressure drop. Polystyrene, polyethylene, and polyvinyl particles with mean diameters of 1.7, 3.1, and 4.3 mm, respectively, were transported as test particles in a vertical pipeline 12.2 m in height with an inside diameter of 80 mm. The initial swirl number was varied from 0.38 to 0.94, the mean air velocity was varied from 9 to 23 m/s, and the mass flow rate of the solids was varied from 0.3 to 1.25 kg/s. The minimum and critical air velocities decreased as much as 20 and 13 percent, respectively, when using SFPC. The total pressure drop and power consumption of SFPC are close to those of axial flow pneumatic conveying in the low air velocity range.

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Yang, Daolong, Ge Li, Yanxiang Wang, Qingkai Wang, Jianping Li, Qianqian Huang, Youtao Xia, and Qian Li. "Prediction of Horizontal Pneumatic Conveying of Large Coal Particles Using Discrete Phase Model." Advances in Materials Science and Engineering 2020 (May 12, 2020): 1–15. http://dx.doi.org/10.1155/2020/1967052.

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The pneumatic conveying focusing on gas-solid two-phase flow plays an important role in a conveying system. Previous work has been conducted in the fields of small particles, where the size was less than 5 mm; however, there are few studies regarding large sizes (>5 mm). In order to predict the horizontal pneumatic conveying of large coal particles, the coupling methods based on the Euler–Lagrange approach and discrete phase model (DPM) have been used for the simulated research. Compared with the experimental results under the same working condition, the particle trajectory obtained by simulation is similar to the particle distribution at the same position in the experiment, and it turns out that the simulation method is feasible for the horizontal pneumatic conveying of large particles. Multifactor simulations are also carried out to analyse the effects of particle size, flow field velocity, solid-gas rate, and pipe diameter on the wall abrasion during horizontal pneumatic conveying, which provides simulation reference and design guide for pneumatic conveying of large particles.

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Li, Zhi Hua, Zong Xiang Peng, and Yun Jie Zhou. "The Selection of Filter Technical Parameters in Carbon Black Pneumatic Conveying System." Key Engineering Materials 561 (July 2013): 490–95. http://dx.doi.org/10.4028/www.scientific.net/kem.561.490.

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According to the properties of carbon black, this paper considers that the better filter as the dust removal equipment for carbon black pneumatic conveying system is pulse bag filter, describes the structure and working principle of the pulse bag filter, puts forward the factors to be considered and technical parameters to be selected to make sure that the carbon black pneumatic conveying system can work long and stably.

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Chen, Bin, Kenneth Charles Williams, Mark Glynne Jones, and Ying Wang. "Experimental Investigation of Pressure Drop in Bypass Pneumatic Conveying of Fly Ash." Advanced Materials Research 508 (April 2012): 11–15. http://dx.doi.org/10.4028/www.scientific.net/amr.508.11.

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Bypass pneumatic conveying systems provide a passive capability to reduce conveying velocity and therefore reduce attrition and abrasion in the process of conveying many fragile and erosive particulate solids. Because of these capabilities, bypass pneumatic conveying systems have been used in coal-fired power stations for removing fly ash for the last couple of decades. In bypass systems, the differential pressure between bypass pipe and main pipe as well as the pipeline pressure drop are two of most significant parameters as differential pressure represents the aeration mechanism within the pipeline while pressure drop is an essential parameter for bypass pneumatic conveying system design. In bypass systems, these two parameters are determined not only by the turbulent mode of the gas solids two-phase flow but also by the bypass configurations. The objective of this study was to experimentally investigate the differential pressure between bypass pipe and main pipe as well as the pressure drop during the bypass pneumatic conveying of fly ash. Pneumatic conveying tests in bypass systems and a conventional pipeline were carried out in this study. The bypass pipeline was a 79 mm diameter main pipe with a 27 mm inner diameter bypass pipe with orifice plate flute arrangement. Fly ash was discharged to the system from the bottom of a positive pressure blow tank. The receiving bin was mounted on load cells for measuring the mass accumulation. In order to monitor real time behavior of the system, pressure transmitters were used to measure the gauge pressure. Differential pressure transmitters were employed in the system for measuring the pressure difference between the bypass pipe and main pipe. Differential pressure results between bypass pipe and main pipe in the process of conveying fly ash showed that the pressure before the orifice plate in the bypass pipe was higher than that in main pipe as a result of orifice plate airflow resistance. Therefore, air came into main pipe and aerated the material continuously. The differential pressure also illustrated that the particulate may go into the bypass pipe as pressure in the bypass pipe after orifice plate is lower than that in main pipe. The pipeline pressure drop results also showed that pressure drop was higher than in the conventional system when using the same operating parameters due to the increase of friction. The influences of bypass configurations on pressure drop of bypass system were also discussed.

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Kevin D. Baker, Richard L. Stroshine, George H. Foster, and Kevin J. Magee. "Performance of a Pressure Pneumatic Grain Conveying System." Applied Engineering in Agriculture 1, no. 2 (1985): 72–79. http://dx.doi.org/10.13031/2013.26768.

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KOBAYASHI, Toshiichi. "Experimental studies of pneumatic conveying system of snow." Journal of the Japanese Society of Snow and Ice 53, no. 3 (1991): 211–16. http://dx.doi.org/10.5331/seppyo.53.211.

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17

Gomes, Thais L. C., Giovani A. Lourenço, Carlos H. Ataíde, and Claudio R. Duarte. "Biomass feeding in a dilute pneumatic conveying system." Powder Technology 391 (October 2021): 321–33. http://dx.doi.org/10.1016/j.powtec.2021.06.020.

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Yin, Jiao, Hu Liu, Jun Wang, and Ke Li. "Control System Design of Pneumatic Conveying in Sand/Dust Environment Simulation Test." Applied Mechanics and Materials 442 (October 2013): 424–29. http://dx.doi.org/10.4028/www.scientific.net/amm.442.424.

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This paper focuses on the design of pneumatic conveying control system, including the design of both hardware and software part. The hardware part is mainly about building a test bed. Under certain wind conditions, by controlling the rotary feed valve to achieve the control of sand/dust concentration. The software part is to make the use of LabVIEW to develop a screen display program, which can achieve real-time data acquisition and control. The paper consists of three parts, the pneumatic control system hardware design, the pneumatic conveying control system software design and then Origin is used to linear fit the wind speed parameters collected back.

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Li, Xiao Ping, Hai Lan Liu, and Yan Nian Rui. "Design of Key Parts of a Pneumatic Conveying System Used in a New Small Trenchless Drilling Robot." Key Engineering Materials 584 (September 2013): 117–20. http://dx.doi.org/10.4028/www.scientific.net/kem.584.117.

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Through research on Pneumatic Conveying technology and the principle of Laval Jet, we completed the design of key parts of a mud dust conveying system used a new small trenchless drilling robot in municipal road construction.

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OGAWA, Keiji. "Household refuse pneumatic conveying system using small diamater pipe." Journal of Environmental Conservation Engineering 15, no. 10 (1986): 778–81. http://dx.doi.org/10.5956/jriet.15.778.

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Jaworski, Artur J., and Tomasz Dyakowski. "Observations of “granular jump” in the pneumatic conveying system." Experimental Thermal and Fluid Science 31, no. 8 (August 2007): 877–85. http://dx.doi.org/10.1016/j.expthermflusci.2006.09.003.

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Mao, Kai Ge, Xiao Hang Xiong, and Shao Feng Yan. "The Design of Pneumatic Control System for CHT Hydrolysis Device." Advanced Materials Research 538-541 (June 2012): 1365–68. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1365.

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The working medium of the pneumatic control system is air, which is delivered to each branch pipe through the role of the governing valve , and then the divided gas delivers the compressed air to each solenoid valve and pneumatic control valve. The solenoid valves and pneumatic control valve is connected through terminals and PLC, PLC obtains corresponding signal and makes judgment, conveying signal which is delivered to the solenoid valves and pneumatic control valve to achieve ventilation and breathe action, and finally the gas reaches the cylinder . The cylinder can complete the valve body on and off, so as to realize the pneumatic system of the automatic control.

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Li, Hui, and Yuji Tomita. "An Experimental Study of Swirling Flow Pneumatic Conveying System in a Horizontal Pipeline." Journal of Fluids Engineering 118, no. 3 (September 1, 1996): 526–30. http://dx.doi.org/10.1115/1.2817790.

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In order to reduce power consumption, pipe wear and particle degradation in pneumatic conveying system, a swirling flow pneumatic conveying (SFPC) system is proposed in this paper, and an experimental study focuses on the SFPC system in a horizontal pipeline in terms of the overall pressure drop, solid flow patterns, power consumption and the additional pressure drop. Polystyrene, polyethylene, and polyvinyl pellets with mean diameters of 1.7, 3.1, and 4.3 mm, respectively, were transported as test particles in a horizontal pipeline of 13 m length and 80 mm inside diameter. The initial swirl number was varied from 0.58 to 1.12, the mean air velocity from 9 m/s to 24 m/s, and the solid mass flow rate from 0.43 kg/s to 1.17 kg/s. It is found that in the lower gas velocity range, the pressure drop, the power consumption and additional pressure drop for SFPC were lower than those for axial flow pneumatic conveying. The critical and minimum air velocities were decreased by SFPC, the maximum reduction rates being 13 and 17 percent, respectively. The fluctuation of wall static pressure for SFPC was also decreased.

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Wang, Chun Yao, Xue Nong Wang, Fa Chen, Yue Liu, Jiu Peng Chi, and Wei Dong Jiang. "Flow Field Analysis of Conducting Trunk of Comb-Type Cotton Picker." Advanced Materials Research 468-471 (February 2012): 1749–52. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.1749.

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This article uses the flow field numerical simulation technology, it does simulation research for the flow field of the whole pneumatic conveying cotton trunk, through studying different types of jet orifice of the conveying trunk of comb—type cotton picker, finding out the influence of jet orifice width on pressure and velocity field, further understanding flow field distribution characteristics of the internal pneumatic cotton conveyance system, and providing necessary basis for the machine.

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Li, Zhi Hua, Jian Feng Liu, Lei Jiao, and Lei Guo. "Study on the Dense Phase Pneumatic Conveying Property of Carbon Black." Advanced Materials Research 221 (March 2011): 228–34. http://dx.doi.org/10.4028/www.scientific.net/amr.221.228.

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The dense phase pneumatic conveying system of carbon black and the experimental process are introduced in the paper. According to the test data, the factors that influence the carbon black conveying performance are analysed. This paper points out that the higher of air flow rate will increase the conveying capacity of carbon black, but will approach to a critical value. The open pressure of the blow pot has a optimal extent, in which the carbon black conveying time will be the shortest. This paper also points out that the longer the conveying distance, the higher the carbon black fragmentation rate.

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An, Liansuo, Weilong Liu, Yongce Ji, Guoqing Shen, and Shiping Zhang. "Detection of Pneumatic Conveying by Acoustic Emissions." Applied Sciences 9, no. 3 (February 1, 2019): 501. http://dx.doi.org/10.3390/app9030501.

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The acoustic emission (AE) method is used in certain industries for the measurement of pneumatic conveying. Instead of the non-intrusive sensors, the comparison of two different intrusive probes in pneumatic conveying is presented in this work, and the AE signals generated by the flow for different particle flow rates and particle sizes were studied. Comparing the distribution of root mean square (RMS) values indicates that the AE signal acquired by a wire mesh probe was more reliable than that from a T-type probe. Limited intrinsic mode functions (IMFs) were extracted from the raw signals by the ensemble empirical mode decomposition (EEMD) algorithm. The characteristics of these signals were analyzed in both the time and frequency domains, and the energies of different IMFs were used to predict the particle mass flow rates, demonstrating a relative error under 10% achieved by the proposed monitoring system. Additionally, the mean squared error contribution fraction, instead of the energy fraction, can predict the particle size.

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Кabyshev, A. M., V. V. Khmara, and M. P. Maslakov. "Development and computer based simulation of pneumatic conveying control system." IOP Conference Series: Earth and Environmental Science 194 (November 15, 2018): 022049. http://dx.doi.org/10.1088/1755-1315/194/2/022049.

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Yao, Jun, Yan Zhang, Chi-Hwa Wang, Shuji Matsusaka, and Hiroaki Masuda. "Electrostatics of the Granular Flow in a Pneumatic Conveying System." Industrial & Engineering Chemistry Research 43, no. 22 (October 2004): 7181–99. http://dx.doi.org/10.1021/ie049661l.

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Jaworski, Artur J., and Tomasz Dyakowski. "Investigations of flow instabilities within the dense pneumatic conveying system." Powder Technology 125, no. 2-3 (June 2002): 279–91. http://dx.doi.org/10.1016/s0032-5910(01)00516-2.

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Knight, E. A., R. O. Ansell, and D. McGlinchey. "Benefits of On-Site Measurement on Pneumatic Conveying System Performance." Measurement and Control 35, no. 8 (October 2002): 234–37. http://dx.doi.org/10.1177/002029400203500803.

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Bunchatheeravate, Poom, Jennifer Curtis, Yusuke Fujii, and Shuji Matsusaka. "Prediction of particle charging in a dilute pneumatic conveying system." AIChE Journal 59, no. 7 (February 27, 2013): 2308–16. http://dx.doi.org/10.1002/aic.14025.

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Kanou, Osamu. "An Optimal Energy Saving System of the Low Density Pneumatic Conveying System." Journal of the Society of Powder Technology, Japan 46, no. 10 (2009): 763–66. http://dx.doi.org/10.4164/sptj.46.763.

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Zhiyao Huang, Baoliang Wang, and Haiqing Li. "An intelligent measurement system for powder flowrate measurement in pneumatic conveying system." IEEE Transactions on Instrumentation and Measurement 51, no. 4 (August 2002): 700–703. http://dx.doi.org/10.1109/tim.2002.803296.

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Yao, Jun, Eldin Wee Chuan Lim, Chi Hwa Wang, and Ning Li. "Process Tomographic Measurements of Granular Flow in a Pneumatic Conveying System." Advanced Materials Research 508 (April 2012): 75–79. http://dx.doi.org/10.4028/www.scientific.net/amr.508.75.

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The application of process tomography (PT) technologies, i.e. Electrostatic Tomography (EST) and Electrical Capacitance Tomography (ECT) to investigate complex industrial processes has obtained wide popularity in recent years. This study focuses on the characterization of non-uniformly distributed electrostatic effects across the cross-section of a pneumatic transportpipe. A digital electrometer was used to measure the electrostatics current and an ECT was used to observe the particle distribution in a vertical pipe. Due to non-uniform particle-wall collisions, the electrostatics generated was observed to be non-uniformly distributed across the pipe cross-section, especially at pipe bends and in a vertical pipe. Large electrostatic effects were associated with high particle concentration in the pipe. There was a good correspondence between the electrostatic effects measured and particle concentration distributions obtained using ECT. Based on ECT measurements at the vertical pipe section, it was observed that particles tended to concentrate at sections where generation of electrostatic charges was high. Thus, it is clear that electrostatic effects should be the key factor giving rise to non-uniform particle concentration distribution in pneumatic transport lines.

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Li, Zhi Hua, Yan Qing Yang, Ya Zhou Yu, Guang Peng Liu, and Xu Chao Li. "Numerical Simulation and Analysis of Carbon Black in Pneumatic Conveying Pipe." Advanced Materials Research 1052 (October 2014): 561–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1052.561.

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Based on establishment of the mathematical model about the carbon black dense phase pneumatic conveying, using computational fluid dynamics ( referred to as CFD) methods, this paper stimulated the carbon black flow state inside the bent pipe. Through simulation and analysis, the carbon black particles' flow condition along the bent pipe, the carbon black particles' distribution variation at the bent pipe cross-section, the bent pipe part where worn most easily, the fluid pressure cloud and the optimum R/D have been gotten. All these provide basis for the research and design of carbon black dense phase pneumatic conveying system.

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Chen, Wei Min, Guo An Yuan, Xiao Yong Peng, and Shuang Shuang Xiao. "Experimental Study on the Stability of Pneumatic Cut Tobacco Feeding System." Advanced Materials Research 889-890 (February 2014): 493–96. http://dx.doi.org/10.4028/www.scientific.net/amr.889-890.493.

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According to the process performance of cigarette machines system, the device was established to measure the stability of pneumatic cut tobacco feeding system, which was signified as the flow deviation coefficients of branch circuits. The state and process of pneumatic feeding system were simulated respectively by shutting one branch, and then it paid close attention to the changing of flow rates or velocities in other branch circuits. The flow deviation coefficients were calculated with the experimental data, and the results shown that shutting down one branch, the flow deviation coefficients of other branches is always below 12%.The results will do some benefits to the design of cut tobacco pneumatic conveying system in the engineering application.

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FUTAMURA, Mitsushi. "A Pneumatic Conveying System for Strongly-adhesive Powders and its Features." Journal of the Society of Powder Technology, Japan 31, no. 8 (1994): 561–67. http://dx.doi.org/10.4164/sptj.31.561.

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38

YAN, Fei. "Experimental Study on the Low-velocity Self-excited Pneumatic Conveying System." Journal of Mechanical Engineering 54, no. 1 (2018): 225. http://dx.doi.org/10.3901/jme.2018.14.225.

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39

Tripathi, Naveen Mani, Avi Levy, and Haim Kalman. "Acceleration pressure drop analysis in horizontal dilute phase pneumatic conveying system." Powder Technology 327 (March 2018): 43–56. http://dx.doi.org/10.1016/j.powtec.2017.12.045.

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Yan, Fei, and Akira Rinoshika. "An Experimental Study on a Horizontal Energy-saving Pneumatic Conveying System." Procedia Engineering 102 (2015): 1056–63. http://dx.doi.org/10.1016/j.proeng.2015.01.228.

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41

Brown, G. J., D. Reilly, and D. Mills. "Development of an ultrasonic tomography system for application in pneumatic conveying." Measurement Science and Technology 7, no. 3 (March 1, 1996): 396–405. http://dx.doi.org/10.1088/0957-0233/7/3/022.

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Kevin D. Baker, Richard L. Stroshine, Kevin J. Magee, George H. Foster, and Robert B. Jacko. "Grain Damage and Dust Generation in a Pressure Pneumatic Conveying System." Transactions of the ASAE 29, no. 3 (1986): 0840–47. http://dx.doi.org/10.13031/2013.30238.

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Kuang, Shibo, Ke Li, and Aibing Yu. "CFD-DEM Simulation of Large-Scale Dilute-Phase Pneumatic Conveying System." Industrial & Engineering Chemistry Research 59, no. 9 (September 6, 2019): 4150–60. http://dx.doi.org/10.1021/acs.iecr.9b03008.

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Pickup, Elaine. "Closed loop control of a pneumatic conveying system using tomographic imaging." Journal of Electronic Imaging 10, no. 3 (July 1, 2001): 653. http://dx.doi.org/10.1117/1.1379974.

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Juan, Lv, Fu Yu, Lv qiangqiang, Wang Bin, Wang Jianbo, and Chen Haiyan. "Charging Characteristics of Sulfur powder in Elbow of Pneumatic Conveying System." IOP Conference Series: Earth and Environmental Science 358 (December 13, 2019): 052064. http://dx.doi.org/10.1088/1755-1315/358/5/052064.

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Tamara, A. J., C. Yap, and M. A. Mannan. "Gravity pipe flow of polymeric bulk solids in pneumatic conveying system." Chemical Engineering Science 61, no. 24 (December 2006): 7836–49. http://dx.doi.org/10.1016/j.ces.2006.08.025.

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LIM, ELDIN WEE CHUAN, JUN YAO, and YANLIN ZHAO. "ELECTROSTATIC EFFECTS IN PNEUMATIC TRANSPORT OF GRANULAR MATERIALS." International Journal of Modern Physics: Conference Series 19 (January 2012): 351–61. http://dx.doi.org/10.1142/s201019451200894x.

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The methodology of coupling the Discrete Element Method (DEM) with Computational Fluid Dynamics (CFD) was applied for computational studies of pneumatic transport of granular materials through vertical and horizontal pipes in the presence of electrostatic effects. The simulations showed that a thin layer of particles formed and remained adhered to the pipe walls during the pneumatic conveying process due to the effects of strong electrostatic forces of attraction towards the pipe walls. Particle concentrations were generally higher near the pipe walls than at the pipe centre resulting in the ring flow pattern observed in previous experimental studies. The close correspondence between particle velocity vectors and fluid drag force vectors was indicative of the importance of fluid drag forces in influencing particle behaviors. In contrast, the much weaker particle-particle electrostatic repulsion forces had negligible effects on particle behaviors within the system under all operating conditions considered. The electrostatic field strength developed during pneumatic conveying increased with decreasing flow rate due to increased amount of particle-wall collisions. Based on dynamic analyses of forces acting on individual particles, it may be concluded that electrostatic effects played a dominant role in influencing particle behaviors during pneumatic conveying at low flow rates while drag forces became more important at high flow rates.

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KUSHWAHA, R. L., and W. B. REED. "A PNEUMATIC SYSTEM FOR HERBICIDE GRANULE INCORPORATION INTO SOIL WITH A DISCER." Canadian Journal of Soil Science 65, no. 2 (May 1, 1985): 249–59. http://dx.doi.org/10.4141/cjss85-029.

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In an effort to minimize the effect of wind on the placement of herbicide granules during simultaneous application-incorporation while seeding with a discer, a pneumatic conveying and dispersion system was designed, fabricated and tested. Nozzles designed for the system produced a uniform granule distribution pattern over a width of 300 mm. The system was mounted on a 2.8-m-wide discer for field evaluation. Field tests were conducted to determine the uniformity of incorporation at different soil depths under windy conditions. Bio-assay field trials were conducted over a period of 2 yr to evaluate crop injury and weed control with the pneumatic system. It was compared with other currently used methods of granular and liquid triallate application. The pneumatic system provided good weed control, no apparent crop injury and no reduction in crop yield. Key words: Pneumatic application, discer, herbicide granules

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Петровский, Vladislav Petrovskiy, Щедрин, and Sergey Shchedrin. "Analysis and synthesis of automatic control systems of pneumatic transport and technological chips account." Forestry Engineering Journal 3, no. 3 (December 12, 2013): 199–203. http://dx.doi.org/10.12737/1787.

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The article shows the task solution of mass accounting, volume of pneumatically transported chips per time unit by measuring the pressure drop for the pneumatic transport conveying flow after the feeder. This system has been tested at Bratsk FIC and its implementation was based on the calibration of the measurement system, which takes into account the mathematical relationship of chipping flow per unit of time and reducing the pressure of pneumatic transport.

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E, Jia Qiang, Teng Liu, Wei Zuo, and Yi Huang. "Simulation on Entrainment Process of Suction Mouth under Negative Pressure in the Medium Dry Sanitation Trucks." Applied Mechanics and Materials 711 (December 2014): 86–90. http://dx.doi.org/10.4028/www.scientific.net/amm.711.86.

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Since twentieth Century 40's, some foreign enterprises in developed countries began to study and produce sweeper [1-2]. Research on China's sweeping car began in twentieth Century 60 years, but until the 80 time end when china had been reforming and opening that it began to rapidly develope [3-4].But the study of mouth has the same general trend at home and abroad. Due to the different design of suction mouth, circulation type pneumatic conveying systems in general can be divided into open pneumatic conveying system using pure suction type suction mouth [5] and the use of reverse blowing type suction mouth delivery system [6]. Now most of the sweeper adopts the latter, but if the back blowing type suction mouth design improperly ,it can not achieve the ideal effect of absorbing dust, and may lead to strong fugitive dust [7-9].Today although road sweeper have been studied for decades at home and aboard, but these studies mainly is through the enterprise using engineering practice means to complete ,there are two situations occurring as follows: a number of technical on research and development need to rely on our own to explore; The engineering practice have greater demand for human, material and financial resources, and it is difficult to achieve better expected. In order to solve the problems of the above two points, according to the fluid mechanics analysis, this paper mainly research and analyze the sweeper suction mouth's flow field pickup role of entrainment process for particulate contamination by negative pressure suction, which can provide a foundation for the research and optimization of sweeper pneumatic conveying system.

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Journal articles on the topic 'Pneumatic conveying system'

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