煤炭转化2017，Vol.40Issue(2)：53-58,6.
煤制合成天然气过程能量转换分析
Energy Transformation Analysis of Coal to SNG Process
摘要
Abstract
Based on exergy analysis method,for an actual process of coal to SNG with an annual scale of 1.4 × 109 m3,the distribution of exergy loss in each unit and in the whole process were investigated.The results show that general exergy efficiency of gasification unit is the lowest,84.75％,and that of rectisol unit is the highest,98.90％.The prime exergy loss occurrs in gasification unit,reaching to 77.78％ of total exergy loss.The exergy losses in shift unit,rectisol unit and methanation unit are 5.49％,4.04％ and 12.68％ of total exergy loss,respectively.In gasification unit,increasing byproduct steam pressure could not impact exergy efficiency effectively,it is more important to optimize the operating condition of gasifier and scrubber cooler.In methanation unit,higher byproduct steam pressure could improve exergy efficiency obviously and increase steam yield.关键词
煤制合成天然气/加压气化/粗煤气变换/低温甲醇洗/甲烷化/(火用)分析/能量转换Key words
coal to SNG/pressurized gasification/shift of raw gas/rectisol/methanation/exergy analysis/energy transformation分类
化学化工引用本文复制引用
王红敬,黄雪莉,潘毅..煤制合成天然气过程能量转换分析[J].煤炭转化,2017,40(2):53-58,6.基金项目
新疆高技术研究发展计划项目(201314101). （201314101）
