典型气流床煤气化炉气化过程的建模

doi:10.16085/j.issn.1000-6613.2016.08.19

化工进展 ›› 2016, Vol. 35 ›› Issue (08): 2426-2431.DOI: 10.16085/j.issn.1000-6613.2016.08.19

典型气流床煤气化炉气化过程的建模

东赫¹, 刘金昌^1,2, 解强¹, 党钾涛¹, 王新¹

1. 中国矿业大学(北京) 化学与环境工程学院, 北京 100083;
2. 九州大学电子和材料应用科学系, 日本福冈春日 816-8580

收稿日期:2015-10-30 修回日期:2015-12-09 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: 解强,教授,博士生导师。E-mail:dr-xieq@cumtb.edu.cn。
作者简介:东赫(1991—),女,硕士研究生。
基金资助:
国家重点基础研究发展计划（2014CB238905）及中央高校基本科研业务费（2009KH10）项目。

Modeling of coal gasification reaction in typical entrained-flow coal gasifiers

DONG He¹, LIU Jinchang^1,2, XIE Qiang¹, DANG Jiatao¹, WANG Xin¹

1. School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
2. Department of Applied Science for Electronics and Materials, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan

Received:2015-10-30 Revised:2015-12-09 Online:2016-08-05 Published:2016-08-05

摘要/Abstract

摘要： 利用Aspen Plus、基于热力学平衡模型对GSP煤粉气化炉、GE水煤浆气化炉及四喷嘴对置式水煤浆气化炉的气化过程建模。根据煤颗粒热转化的历程，将煤气化过程划分为热解、挥发分燃烧、半焦裂解及气化反应4个阶段，利用David Merrick模型计算热解过程，采用Beath模型校正压力对热解过程的影响，选用化学计量反应器模拟挥发分燃烧反应，编制Fortran程序计算半焦裂解产物收率，最后基于Gibbs自由能最小化方法计算气化反应。结果表明，采用建立的气流床气化过程模型模拟工业气化过程的结果与生产数据基本吻合，对GSP煤粉气化炉、GE水煤浆气化炉及四喷嘴对置式水煤浆气化炉等3种气化炉有效气成分（CO+H₂）体积分数模拟结果的误差均不超过2%，建立模型的可靠性得到验证。

关键词: 气流床气化炉, 热力学平衡模型, Aspen Plus

Abstract: This paper presents a modeling method for the coal gasification process proceeding in GSP pulverized coal gasification,GE coal-water slurry gasification and Opposed Multiple-Burner gasification based on the thermodynamic equilibrium with the aid of Aspen Plus. In the light of thermal conversion procedure of fine coal particles,the coal gasification was interpreted as consisting of four stages including pyrolysis,volatile combustion,char decomposition and gasification reaction. Then,the pyrolysis stage was calculated by the David Merrick model and the effect of pressure on the coal pyrolysis was corrected by means of Beath model. The volatile combustion stage was simulated by using Rstoic reactor and the yield of char decomposition products was calculated via compiling Fortran program. And finally,the gasification reaction stage was simulated based on the Gibbs free energy minimization. The results revealed that the simulated values from the developed simulation model of gasification processes were in good consistent with the industrial field data. The deviation of simulated results of volume fraction of the effective gas (CO+H₂) of these three typical entrained-flow gasifiers were all less than 2%,which can validate the reliability of the coal gasification model.

Key words: entrained-flow gasifiers, thermodynamic equilibrium model, Aspen Plus

中图分类号:

TQ546

东赫, 刘金昌, 解强, 党钾涛, 王新. 典型气流床煤气化炉气化过程的建模[J]. 化工进展, 2016, 35(08): 2426-2431.

DONG He, LIU Jinchang, XIE Qiang, DANG Jiatao, WANG Xin. Modeling of coal gasification reaction in typical entrained-flow coal gasifiers[J]. Chemical Industry and Engineering Progree, 2016, 35(08): 2426-2431.

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典型气流床煤气化炉气化过程的建模

Modeling of coal gasification reaction in typical entrained-flow coal gasifiers

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