准东煤气化过程的热力学分析

THERMODYNAMIC ANALYSIS FOR GASIFICATION PROCESS OF ZHUNDONG COAL

采用Aspen Plus软件对我国准东煤合成气生产系统进行模拟,研究气化炉的主要操作参数(即n(O)∶n(C)和气化剂中水蒸气比例)对气化结果(合成气温度、合成气产出率、冷煤气效率和效率)的影响;比较了相同气化条件下准东煤与烟煤经济性的差异;对粗合成气显热回收对经济性的影响进行了讨论.结果表明,准东煤的气化经济性比烟煤的高,而综合效率却相反;当气化剂中水蒸气含量高时,加热气化剂回收显热比激冷回收要好.

Aspen Plus software is used to simulate the production system of syngas in Zhundong. The effect of some important operation parameters such as n（O） ： n（C） and the steam proportion of gasifying agent in coal gasifier on the gasification production has been studied. The differences in economical efficiency between Zhundong coal and bituminous coal arc compared under the same gasifying conditions. The effect of sensible heat reclaiming of crude syngas on economical efficiency has been discussed. The result shows that the gasification economical efficiency of Zhundong coal is higher than bituminous coal but the integrated efficiency is opposite. Using sensible heat to heat the gasifying agent is better than quench process when the steam proportion of gasifying agent is high.