Journal
CHINESE JOURNAL OF CHEMICAL ENGINEERING
Volume 21, Issue 1, Pages 79-84Publisher
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/S1004-9541(13)60444-9
Keywords
coal gasification; Texaco gasifier; equilibrium model; carbon conversion; product gas composition
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Funding
- Major State Basic Research Development Program of China [2012CB720500]
- National Natural Science Foundation of China [U1162202, 61174118]
- National Science Fund for Outstanding Young Scholars [61222303]
- Shanghai Leading Academic Discipline Project [B504]
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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.
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