摘要
多元料浆气化技术(MCSG)是能源化工领域中煤炭清洁利用的新技术,主要用于合成氨、合成甲醇等基础化工原料工业以及燃料、制氢行业。化工流程模拟在化工过程的开发设计、挖潜改造、节能增效和生产指导方面是1种科学高效的研究方法。本文对多元料浆气化流程建立了流程模拟模型,并对操作参数和工艺条件变化时的情况进行了模拟分析。本文利用所建模型对1个年产15万吨合成氨和15万吨甲醇的煤气化流程进行了模拟,粗煤气中有效气体H_2和CO误差分别为0.35%和1.49%,其他各组分误差一般也低于1%～2%。模拟结果验证了煤气化流程模型能准确的反映生产实际情况。此外,由于洗涤塔的操作参数将影响出口的粗煤气中的有效气体H_2和CO的组成,本文分析了出洗涤塔操作参数对粗煤气中有效气体(H_2和CO)流量的影响,当温度压力以及入洗涤塔工艺冷凝液分别变化10%时,有效气体变化分别为6.8‰,1.7‰和0.16‰,并提出了相应的调控策略。
Multi-component slurry gasification technology（MCSG）is a clean coal technology,and mainly used in synthetic ammonia,methanol,fuel and hydrogen industries.Chemical process simulation is an efficient method in chemical process design,renovation,energy saving retrofit and production management.In this paper,a process simulation model is established for the multi-component slurry gasification process to simulate and analyze the process when operating parameters and process conditions are changed.The model is applied to simulate a process with annual production capacity of 150000 tons/a synthetic ammonia and 150000 tons/a methanol.Errors of the key gas（H_2 and CO）are 0.35%and 1.49%in coal gas,and errors of other components are generally less than 1%-2%in the whole system.The simulation results show that the coal gasification process model can accurately reflect the actual production situation.In addition,because the operation parameters of the washing tower will affect H_2 and CO composition in the coal gas,the impact of temperature,pressure and recycling water in the washing tower on the key gas flowrate is analyzed. The results show that when the three operating parameters respectively chang 10%,the key gas flowrate changes are 6.8%o,1.7‰and 0.16‰, respectively.The corresponding regulatory strategies for the key gas flowrate are proposed.
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2010年第10期1305-1308,共4页
Computers and Applied Chemistry
基金
国家自然科学基金(50876079).
关键词
煤气化
模拟
建模
水煤浆
coal gasification
simulation
modeling
coal water slurry（CWS）
