Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus

doi:10.1016/S1004-9541(13)60444-9

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (1): 79-84.DOI: 10.1016/S1004-9541(13)60444-9

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Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus

KONG Xiangdong¹, ZHONG Weimin², DU Wenli¹, QIAN Feng ¹

1 Key Laboratory of Advanced Control and Optimization for Chemical Processes (Ministry of Education), East China University of Science and Technology, Shanghai 200237, China;
2 Automation Institute, East China University of Science and Technology, Shanghai 200237, China

Received:2012-07-31 Revised:2012-11-02 Online:2013-02-04 Published:2013-02-28
Supported by:
Supported by the Major State Basic Research Development Program of China (2012CB720500), the National Natural Science Foundation of China (U1162202, 61174118), the National Science Fund for Outstanding Young Scholars (61222303) and Shanghai Leading Academic Discipline Project (B504).

Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus

孔祥东¹, 钟伟民², 杜文莉¹, 钱锋 ¹

1 Key Laboratory of Advanced Control and Optimization for Chemical Processes (Ministry of Education), East China University of Science and Technology, Shanghai 200237, China;
2 Automation Institute, East China University of Science and Technology, Shanghai 200237, China

通讯作者: ZHONG Weimin, QIAN Feng
基金资助:
Supported by the Major State Basic Research Development Program of China (2012CB720500), the National Natural Science Foundation of China (U1162202, 61174118), the National Science Fund for Outstanding Young Scholars (61222303) and Shanghai Leading Academic Discipline Project (B504).

Abstract

Abstract: A three stage equilibrium model is developed for coal gasification in the Texaco type coal gasifiers based on Aspen Plus to calculate the composition of product gas, carbon conversion, and gasification temperature. The model is divided into three stages including pyrolysis and combustion stage, char gas reaction stage, and gas phase reaction stage. Part of the water produced in the pyrolysis and combustion stage is assumed to be involved in the second stage to react with the unburned carbon. Carbon conversion is then estimated in the second stage by steam participation ratio expressed as a function of temperature. And the gas product compositions are calculated from gas phase reactions in the third stage. The simulation results are consistent with published experimental data.

Key words: coal gasification, Texaco gasifier, equilibrium model, carbon conversion, product gas composition

摘要： A three stage equilibrium model is developed for coal gasification in the Texaco type coal gasifiers based on Aspen Plus to calculate the composition of product gas, carbon conversion, and gasification temperature. The model is divided into three stages including pyrolysis and combustion stage, char gas reaction stage, and gas phase reaction stage. Part of the water produced in the pyrolysis and combustion stage is assumed to be involved in the second stage to react with the unburned carbon. Carbon conversion is then estimated in the second stage by steam participation ratio expressed as a function of temperature. And the gas product compositions are calculated from gas phase reactions in the third stage. The simulation results are consistent with published experimental data.

关键词: coal gasification, Texaco gasifier, equilibrium model, carbon conversion, product gas composition

KONG Xiangdong, ZHONG Weimin, DU Wenli, QIAN Feng . Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus[J]. Chin.J.Chem.Eng., 2013, 21(1): 79-84.

孔祥东, 钟伟民, 杜文莉, 钱锋 . Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus[J]. Chinese Journal of Chemical Engineering, 2013, 21(1): 79-84.

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Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus

Three Stage Equilibrium Model for Coal Gasification in Entrained Flow Gasifiers Based on Aspen Plus

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