Assessment of coal gasification in a pressurized fixed bed gasifier using an ASPEN plus and Euler–Euler model

Ismail, Tamer M.; Xu, Jianliang; Chen, Xueli; Wang, Fuchen; El-Salam, M. Abd

doi:10.1007/s40789-020-00361-w

Cited by 13 publications

(7 citation statements)

References 28 publications

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“…These industrial processes apply different gasification processes concerning the raw material properties, including a pressurized fixed bed, multislurry, and shell dry powder gasification. ,− Currently, the studies focus on improving the production process of synthetic natural gas, − the enrichment of coal with plastic wastei.e., High Density Polyethylene (HDPE), Polyethylene Terephthalate (PET) and Polythene (PE)which have increased significantly due to the COVID-19 pandemic − and improvements in the coprocessing of gasification/liquefaction to identify first and then reduce the possible environmental impact caused by metals and polycyclic aromatic contaminants. − …”

Section: Raw Materials In the Ft Processmentioning

confidence: 99%

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

Apolinar-Hernández,

Bertoli,

Riella

et al. 2023

Energy Fuels

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The Fischer−Tropsch technology has allowed, since its emergence a century ago, the production of stable liquid fuels from different raw materials in different geographic scenarios that do not necessarily have oil reserves. Some of these raw materials can generate high-quality fuels with a lower content of sulfur, aromatic, and heterocyclic compounds. The scaling and intensification of the reactors are essential factors in this context, and important challenges such as energy transfer due to the highly exothermic reaction, hydrodynamics due to limited information on pilot-scale in a reasonable range of conditions, or reducing CH 4 selectivity while maintaining high conversion through catalyst design, must be considered. This perspective provides an overview of recent developments in industrial-scale low-temperature Fischer−Tropsch reactors, with a focus on the significance of microchannel reactors in the scale-up process. The advancement in the Fischer−Tropsch synthesis is discussed, with an emphasis on the carbide and CO insertion mechanisms, as well as the socio-political-economic factors that continue to impact the development of this technology.

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Section: Raw Materials In the Ft Processmentioning

confidence: 99%

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

Apolinar-Hernández,

Bertoli,

Riella

et al. 2023

Energy Fuels

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“…According to the authors of [28][29][30][31][32], to reproduce complex hydro-gas-dynamic, heat and mass exchange processes, it is better to use the software ANSYS Fluent (developer Ansys, Inc., USA), which provides high accuracy of calculations. Paper [28] describes the process of coal gasification in a 10-kW plasma gas generator.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…In works [29,30], the ANSYS Fluent medium was used to simulate the process of coal gasification in gas generators with circulating fluidized bed operating under pressure. The developed CFD models made it possible to predict with high accuracy the composition of the produced synthesis gas and give an idea of the processes occurring in the installation.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…In [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], the focus is on modeling the temperature in the working area of the gas generator and determining the composition of the synthesis gas produced depending on the raw materials, the design of the gas generator, and the blow modes. However, none of the cited works investigated the conditions for uniform distribution of air flows in the working areas of gas generators in order to avoid zones where gasification processes will not occur in the absence of an oxidizer.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Determining the effect of the structural and technological parameters of a gas blower unit on the air flow distribution in a gas generator

Golub

Цивенкова

Golub

et al. 2022

EEJET

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The object of this study is the structural and technological parameters of the gas blower unit in the gasification chamber of a gas generator. The task to enable uniform distribution of air masses in the gas generator has been solved using the ANSYS Fluent software. The study is based on a simulation of the movement of air flows in the characteristic cross-sections of the gas generator, in particular the cross-section of the gasification chamber at the border of the oxidation and reduction zones. Seven structures of the gas blower unit were analyzed, the effectiveness of which was determined by the coefficient of variation. The most effective was the design whose value of the coefficient of variation is the smallest and equal to 93 %. At the same time, the total area of zones with no movement of air masses, that is, the absence of a gasification process, does not exceed 12 % of the total cross-sectional area of the gas generator. The speed of air masses at the boundary of the oxidation and reduction zones is aligned in the entire cross-section of the chamber and is V»4.5 m/s. The average value of the vertical component of the speed of air masses in the cross-section at the inlet to the recovery zone of the gasification chamber is V»0.6 m/s. Under such conditions, the production of synthesis gas of high calorific value with the absence of resins, acids, heavy hydrocarbons, and mechanical impurities is ensured. The correspondence of the simulation results with experimental data is confirmed by the coefficient of determination, which amounted to 0.87. The results reported here could be the basis of a modernized methodology for the study of aerodynamic, heat and mass exchange processes that occur during biomass gasification. This would make it possible to define the rational structural and technological parameters of gas generators and improve the efficiency of the gasification process as a whole.

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“…In this paper, the mixed pyrolysis incineration process of solid waste in a counter-flow rotary kiln with a processing capacity of 40 t/d was simulated using Aspen plus software (Ismail, et al 2020b), the temperature distribution and concentration distribution of various substances in the rotary kiln were simulated using Fluent software (Ismail, et al 2020a;Liu and Yang 2015;Siripaiboon, et al 2020). The factors affecting the incineration performance of counterflow rotary kilns were investigated in depth.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on 40t/d Counter-flow Rotary Kiln Incineration System

Yang¹,

Kong²,

Zeng³

et al. 2021

Preprint

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In this paper, a counter-flow rotary kiln incineration system with a processing capacity of 40 t/d of an environmental protection company in Jiangsu Province was used as the research object, and the mixed pyrolysis model and computational fluid dynamics（CFD）model of the counter-flow rotary kiln incineration system were established using Aspen plus and Fluent software. The influence of the operating temperature of the rotary kiln, the heating value of solid waste, the operating load of the rotary kiln, and the primary air volume and primary air speed on the operating effect of the rotary kiln were explored. Operating temperature, primary air volume and wind speed can all have a greater impact on the incineration performance of the counterflow rotary kiln. When the operating temperature of the counter-flow rotary kiln is greater than 800 o C, the hazardous waste heat value is not less than 1500 kcal/kg, and the primary wind speed is 1.5 m/s, the operating effect of the counter-flow rotary kiln incineration system is the best. The simulation results can provide theoretical guidance for the design and optimal operation of the counterflow rotary kiln incineration system.

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Assessment of coal gasification in a pressurized fixed bed gasifier using an ASPEN plus and Euler–Euler model

Cited by 13 publications

References 28 publications

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

An Overview of Low-Temperature Fischer–Tropsch Synthesis: Market Conditions, Raw Materials, Reactors, Scale-Up, Process Intensification, Mechanisms, and Outlook

Determining the effect of the structural and technological parameters of a gas blower unit on the air flow distribution in a gas generator

Simulation Research on 40t/d Counter-flow Rotary Kiln Incineration System

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