Abstract: Process simulation software Aspen HYSYS was used to establish British DAVY seriesparallel methanol synthesis upon steady state process in this study. A concept of equilibrium temperature interval was used to show the distance to equilibrium state in the model of equilibrium reactor. According to the contrast results of influence of exhausted gas positions on inlet gas and outlet gas mole fraction of methanol syntheses reactors, mass flow of crude methanol, mass fraction of crude methanol and recycle gas mass flow, different exhausted gas positions were proposed. Mass flow of recycle gas could be reduced at a lower value with this new exhausted gas position, which could widen the operation flexibility of methanol synthesis process. It could play a direct role in the actual production as well as design of following new process.

Key words: Methanol,    ,  Exhausted gas,    ,  Aspen HYSYS,    ,  Recycle gas,     ,  Energy consumption

摘要： 利用 A s p e nHY S Y S流程模拟软件对英国DAVY公司串并联甲醇合成工艺进行稳态工艺过程模拟。 采用平衡反应器, 引入平衡温距表示反应过程与达到平衡的差距, 对比驰放气释放的不同位置, 对甲醇合成反应器 进出口物流组成、 粗甲醇质量流量、 粗甲醇质量分数和循环气质量流量的影响。对比结果表明, 优化驰放气的排放 位置以后可以在保证粗甲醇产量的基础上降低循环气的质量流量, 进而降低循环气压缩机功耗, 改善甲醇合成系统 的操作弹性, 对实际生产过程起到指导作用, 同时可以为后续新流程新工艺设计提供参考。

关键词: 甲醇, 驰放气,  , A s p e nH y s y s,  , 循环气, 能耗