摘要
以60万吨/年煤制甲醇装置为背景,采用.Aspen Plus模拟了其中的水煤浆气化过程。将复杂的水煤浆气化过程分解为煤裂解、挥发分燃烧、气化反应、水激冷、灰分分离等子过程,由子过程的组合构成完整的气化炉模型。用现场装置实际运行数据验证了模型的可靠性,模型计算结果与现场数据吻合良好。以此模型分析了主要操作条件一水煤浆浓度、氧煤比、气化温度、气化压力一对气化过程的影响,结果是,水煤浆浓度和氧煤比对粗煤气组成和温度影响明显:提高水煤浆浓度,粗煤气温度及有效气成分(CO+H_2)的含量均升高;提高氧煤比,粗煤气温度上升,有效气成分(CO+H_2)含量下降。
Based on a 600 000 ton/year coal to methanol process, the water-coal slurry gasifier of GE was simulated through Aspen Plus. The complicated gasification process was decomposed into 5 sub processes which are coal pyrolysis, volatile combustion, gasification, water quench and ash separation. The real data from plant was used to compare with the simulation results. The comparation showed that the two results tallied well. Influence on gasification of some main operating conditions such as slurry concentration, oxygen/coal ratio, gasification temperature and gasification pressure was analyzed with this model. The results showed that slurry concentration and oxygen/coal ratio are two dominate factors to affect syngas composition and temperature. Increasing slurry concentration, the syngas temperature and the effective components （CO＋H2） concentration will increase both. Increasing oxygen/coal ratio, the syngas temperature will increase but the effective components （CO＋H2） concentration decreases .
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2012年第12期1425-1428,共4页
Computers and Applied Chemistry
