Academic literature on the topic 'Multiple hearth furnace'

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Journal articles on the topic "Multiple hearth furnace"

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Ramı́rez, Mercedes, Rodolfo Haber, Vı́ctor Peña, and Iván Rodrı́guez. "Fuzzy control of a multiple hearth furnace." Computers in Industry 54, no. 1 (2004): 105–13. http://dx.doi.org/10.1016/j.compind.2003.05.001.

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Gomez, Fuentes J. V., and S. L. Jämsä-Jounela. "Control Strategy For A Multiple Hearth Furnace." IFAC-PapersOnLine 51, no. 21 (2018): 189–94. http://dx.doi.org/10.1016/j.ifacol.2018.09.416.

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Sapienza, Frank, Thomas Walsh, Karla Sangrey, Louis Barry, Jane Madden, and Robert Gaudes. "Upgrade of UBWPAD's Multiple Hearth Furnace Sludge Incinerators." Proceedings of the Water Environment Federation 2007, no. 3 (2007): 880–92. http://dx.doi.org/10.2175/193864707787975642.

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Kukharev, Alexsey, Vyacheslav Bilousov, Ecaterina Bilousov, and Vitaly Bondarenko. "The Peculiarities of Convective Heat Transfer in Melt of a Multiple-Electrode Arc Furnace." Metals 9, no. 11 (2019): 1174. http://dx.doi.org/10.3390/met9111174.

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The modern direction of improving the technology of steel production in high-power arc furnaces is the intensification of magnetohydrodynamic effects for mixing the melt. In this article, a furnace design is proposed that contains three roof arc and three bottom electrodes, which provides the formation of additional eddy currents in the melt when the furnace is supplied with direct current or a low-frequency current. For a numerical study of the features of heat transfer in the melt of this furnace, a three-dimensional mathematical model of magnetohydrodynamic and thermal processes was used. T
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Shekhter, Leonid N., John E. Litz, Nimit M. Shah, and Larry F. McHugh. "Thermodynamic Modelling of Molybdenite Roasting in a Multiple-Hearth Furnace." JOM 73, no. 3 (2021): 873–80. http://dx.doi.org/10.1007/s11837-020-04549-y.

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Jämsä-Jounela, Sirkka-Liisa, Jose Valentin Gomez Fuentes, Jonathan Hearle, David Moseley, and Alexander Smirnov. "Control strategy for a multiple hearth furnace in kaolin production." Control Engineering Practice 81 (December 2018): 18–27. http://dx.doi.org/10.1016/j.conengprac.2018.08.020.

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Eskelinen, Aleksi, Alexey Zakharov, Sirkka-Liisa Jämsä-Jounela, and Jonathan Hearle. "Dynamic modeling of a multiple hearth furnace for kaolin calcination." AIChE Journal 61, no. 11 (2015): 3683–98. http://dx.doi.org/10.1002/aic.14903.

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Mininni, Giuseppe, Vincenzo Lotito, Roberto Passino, and Ludovico Spinosa. "Influence of sludge cake concentration on the operating variables in incineration by different types of furnaces." Water Science and Technology 38, no. 2 (1998): 71–78. http://dx.doi.org/10.2166/wst.1998.0107.

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The influence of cake concentration on fuel consumption, air requirement and flue gas production in incineration of sewage sludge is discussed. Fluidized bed (FBF), multiple hearth (MHF) and rotary kiln (RKF) furnaces are considered as alternatives together with the optional use of an afterburning chamber where exhaust gases are taken at 950°C for 2 s with an oxygen concentration of 6% by volume. It clearly appears that, if an afterburning chamber is used, and total minimum fuel consumption can be achieved at an optimal value of cake concentration (45.9% for FBF and 32.5% for MHF) when autogen
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He, Hongsheng, Xiaofang Lv, and Liying Huang. "Enhanced reduction of multiple layers carbon containing pellets in rotary hearth furnace." Metallurgical Research & Technology 120, no. 4 (2023): 410. http://dx.doi.org/10.1051/metal/2023054.

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To enhance the reduction of multiple layers carbon containing pellets in rotary hearth furnace (RHF) process, a three-layer bed pellets were investigated using an electric furnace by simulating the RHF process. It was found that the metallization rate of the pellets on the upper layer was greatly higher than that on the middle and lower layers due to the low reduction efficiency and heat transfer efficiency. Various types and amount of reducing agent in carbon containing pellets showed different metallization rate and shrinkage rate, which affected the reduction efficiency and heat transfer ef
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Gomez Fuentes, J. V., and S. L. Jämsä-Jounela. "Simplified Mechanistic Model of the Multiple Hearth Furnace for Control Development." SNE Simulation Notes Europe 28, no. 3 (2018): 97–100. http://dx.doi.org/10.11128/sne.28.sn.10426.

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Dissertations / Theses on the topic "Multiple hearth furnace"

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Lacombe, Elie. "Modélisation de la torréfaction de biomasse dans un four à soles multiples." Electronic Thesis or Diss., Université Grenoble Alpes, 2023. https://thares.univ-grenoble-alpes.fr/2023GRALI086.pdf.

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Dans le contexte énergétique actuel, la biomasse est une ressource abondante et renouvelable qui peut être valorisée énergétiquement directement sous forme de chaleur ou indirectement sous forme de gaz ou de biocarburants. Pour cela, plusieurs procédés thermochimiques de dégradation de la biomasse sèche tels que la gazéification, la pyrolyse ou la combustion sont mis en œuvre. Cependant, la biomasse exploitable (forestière ou agricole) est caractérisée par un fort taux d'humidité, une broyabilité énergivore, une mauvaise coulabilité de sa poudre ainsi qu’une faible densité énergétique par rapp
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Books on the topic "Multiple hearth furnace"

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Office, General Accounting. Air pollution: Emission sources regulated by multiple Clean Air Act provisions : report to the Chairman, Subcommittee on Clean Air, Wetlands, Private Property, and Nuclear Safety, Commmittee on Environment and Public Works, U.S. Senate. U.S. General Accounting Office, 2000.

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Book chapters on the topic "Multiple hearth furnace"

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Spellman, Frank R. "Description of Multiple-Hearth Furnace." In Incinerating Biosolids. CRC Press, 2020. http://dx.doi.org/10.1201/9781003075875-6.

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Spellman, Frank R. "Operation of Multiple-Hearth Furnace." In Incinerating Biosolids. CRC Press, 2020. http://dx.doi.org/10.1201/9781003075875-7.

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Spellman, Frank R. "Preventive Maintenance Practices: Multiple-Hearth Furnace." In Incinerating Biosolids. CRC Press, 2020. http://dx.doi.org/10.1201/9781003075875-8.

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Conference papers on the topic "Multiple hearth furnace"

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Krause, H. H., and I. G. Wright. "Boiler Tube Failures in Municipal Waste-To-Energy Plants: Case Histories." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95561.

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Abstract Waste-to-energy plants experienced boiler tube failures when the design changed from waste-heat boilers to radiant furnace waterwalls with superheat, adopted from coal-firing technology. The fireside attack by chlorine and sulfur compounds in the refuse combustion products caused many forced outages in early European plants with high steam temperatures and pressures. In spite of conservative steam conditions in the first U.S. plants, some failures occurred. As steam temperatures increased in later U.S. plants, corrosion problems multiplied. Over the years these problems have been alle
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Rothman, M. F., G. Y. Lai, and D. E. Fluck. "Field Experience with Engineering Materials in Industrial Heat Recovery Systems." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85017.

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Abstract Results of field exposures of multiple alloy coupon racks, failure analyses of actual components and related laboratory evaluations of different alloys are all discussed in an effort to describe the nature of materials behavior in various high-temperature industrial recuperator environments. Environments evaluated included those in molten fiberglass production facilities, primary and secondary aluminum remelting facilities, and a zinc melting furnace. Wide variation in materials performance was observed as a consequence of the many forms of high-temperature corrosion encountered. Incl
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Nair, Jayant R., Naif Al Abri, and Muhammad Bilal Akhtar. "Case Study on the Application of Ceramic Coatings to Extend Fired Heater Tube Life and Improving Operational Efficiency with Cost Benefit Analysis." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13115.

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Abstract The aromatics plant is an important downstream petrochemical unit that produces various aromatic hydrocarbons such as xylenes, benzene, and toluene which are the basic building blocks for production of polyester and polymers resulting in different consumer goods. The heart of aromatics plant is a licensed high-performance Naphtha Reforming unit that operates at low pressure and high temperatures required to promote chemical reactions that improve aromatics production. To achieve the required heat there are 4no. of fired heaters with arbor type coil configuration that raise the feed na
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Fuentes, Jose Valentin Gomez, Sirkka-Liisa Jamsa-Jounela, David Moseley, and Tom Skuse. "Control strategy of a Multiple Hearth Furnace enhanced by machine learning algorithms." In 2019 4th Conference on Control and Fault Tolerant Systems (SysTol). IEEE, 2019. http://dx.doi.org/10.1109/systol.2019.8864797.

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Korecki, Maciej, Józef Olejnik, Piotr Kula, Robert Pietrasik, and Emilia Stańczyk Wołowiec. "Multi-Purpose LPC+LPN+HPGQ 25 Bar N2/He Single Chamber Vacuum Furnaces." In HT 2011, edited by B. Lynn Ferguson, Roger Jones, D. Scott MacKenzie, and Dale Weires. ASM International, 2011. http://dx.doi.org/10.31399/asm.cp.ht2011p0309.

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Abstract The article describes the achievements and application of a new generation of HPGQ vacuum furnaces. Implementation of 25 bar quenching enables reaching hardening properties compared to the ones obtained with oil, while vacuum carburizing and nitriding additionally create a great potential for running different heat treatment and thermo-chemical processes as well as multiple processes combined in a single furnace cycle. Technical and technological aspects of the furnace exploitation are presented and operational costs reduction and energy saving are considered.
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Wu, Puyuan, Weixiao Shang, and Jun Chen. "Study of Flow Field of a Residential Gas Furnace With Particle Image Velocimetry." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83471.

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Nearly 45% of the residential site energy in the US is consumed by the gas furnace for space heating. The design practice of next-generation product often refers to CFD-based design tool, in order to reduce the development cost and cycle. In the present study, Particle Image Velocimetry (PIV) is applied to measure the detailed flow field inside a general gas furnace model for establishing a benchmark database and validating CFD predictions. The furnace model is equipped with multiple observation windows and is connected to an air circulation system with seeding particles introduced, simulating
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Jian, Christopher Q. "CFD Modeling of a Fiberglass Furnace." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1664.

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Abstract In the fiberglass production process, glass is produced from various batch ingredients in a glass furnace. The molten glass is then delivered, through a delivery system that is often called the front-end system, to the various downstream forming operations. Multiple complex processes take place in the glass furnace, which include the turbulent reacting flow in the combustion space; laminar flow dominated by natural convection in the molten glass; fusion of raw batch materials to form molten glass; radiation and convective heat transfer between the combustion space and the molten glass
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Mammoser, John H., and Aldo Jimenez. "Comparison of Temperature Measurements in Fire Test Furnaces Using Aspirated Thermocouples." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72548.

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There are numerous thermocouple types which are used to measure temperature in experimental fire environments including bare bead, plate, sheathed (grounded and ungrounded) and aspirated thermocouples (suction pyrometers). Furnaces used to test fire resistive construction, as specified in the Standards ANSI/UL 263, ASTM E119 and NFPA 251 employ sheathed, ungrounded thermocouples to measure gas temperatures, while room fire experiments, such as ASTM E603-01, employ bare bead and aspirated thermocouples to measure hot gas temperature layers. Shielded, aspirated thermocouples are quite inexpensiv
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Jordan, Gwyneth, and Michael Theodoulou. "Evaluating the Sustainability Impacts of Replacing Multiple Hearth Furnaces with High Temperature Fluidized Bed Incinerators and PFAS Regulation Implications on Process Design." In Residuals and Biosolids Conference 2024. Water Environment Federation, 2024. http://dx.doi.org/10.2175/193864718825159444.

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Herrera, Juan, Laura Sandoval, Piyush Kumar, et al. "Computational Analysis of the Temperature Profile Developed for a Hot Zone of 2500°C in an Induction Furnace." In ASME 2024 Fluids Engineering Division Summer Meeting collocated with the ASME 2024 Heat Transfer Summer Conference and the ASME 2024 18th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/fedsm2024-131032.

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Abstract Temperature gradients developed at ultra-high temperatures create a challenge for temperature measurements that are required for material processing. At ultra-high temperatures, the components of the system can react and change phases depending on their thermodynamic stability. These reactions change the physical properties of the system such as thermal conductivity and fluidity. This phenomenon complicates the extrapolation of temperature measurements, as they depend on the thermal conductivity of multiple insulating layers. The proposed model is an induction furnace employing an ele
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