甲醇合成产率对多联产系统效率的影响  

Effect of methanol synthesis ratio on a polygeneration system

作　　者：张晋[1] 段远源[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2003年第10期1420-1423,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家重点基础研究发展规划项目(G1999022304);高等学校优秀青年教师教学科研奖励计划资助项目

摘　　要：多联产是复杂的、高效环保的化工能源系统,甲醇合成和发电联产是最典型的多联产系统。由于不是单一类型的产品,该文采用可用能方法对系统进行能量分析,考虑了化工和发电的物理可用能和化学可用能。以1kg干煤粉为基础,计算出系统各主要单元的可用能平衡,将联产和分产计算结果进行了比较,说明在联产系统中甲醇合成可用能效率高于分产,增加甲醇转化率可提高系统总效率。计算给出了甲醇合成产率达到平衡态的0.9时系统的可用能流,此时联产效率比分产高2.7%。Cogeneration is a complex, efficient and environmental friendly system to simultaneously generate chemical fuels and electrical power. Methanol synthesis and power generation are typical components of the simplest cogeneration system. The exergy method was used to calculate both the physical exergy and the chemical exergy for various production ratios. The methanol synthesis efficiency in the cogeneration system was higher than in a stand alone methanol production system. The cogeneration system exergy efficiency increased with increasing methanol synthesis ratio. The exergy flows with a methanol synthesis ratio of 0.9 at equilibrium show that cogeneration can be 2.7% more efficient than separated methanol and power generation systems. 

关 键 词：甲醇合成 产率 多联产系统 热力学 变换反应 可用能效率 联产效率 能源利用 

分 类 号：TQ223.121[化学工程—有机化工] TQ083.4