A MODIFIED GIBBS FREE ENERGY MINIMISATION MODEL FOR FLUID BED COAL GASIFICATION

被引：5

作者：

Sciazko, Marek ^{[1
]}

Stepien, Leszek ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, PL-300589 Krakow, Poland

来源：

CHEMICAL AND PROCESS ENGINEERING-INZYNIERIA CHEMICZNA I PROCESOWA | 2015年 / 36卷 / 01期

关键词：

equilibrium modelling; coal gasification; gasification modelling; fluid bed gasification; EQUILIBRIUM; KINETICS; CAPTURE;

D O I：

10.1515/cpe-2015-0006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A modified approach to equilibrium modelling of coal gasification is presented, based on global thermodynamic analysis of both homogeneous and heterogeneous reactions occurring during a gasification process conducted in a circulating fluid bed reactor. The model is based on large-scale experiments (ca. 200 kg/h) with air used as a gasification agent and introduces empirical modifications governing the quasi-equilibrium state of two reactions: water-gas shift and Boudouard reaction. The model predicts the formation of the eight key gaseous species: CO, CO2, H2O, H-2, H2S, N-2, COS and CH4, volatile hydrocarbons represented by propane and benzene, tar represented by naphthalene, and char containing the five elements C, H, O, N, S and inorganic matter.

引用

页码：73 / 87

页数：15

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