粉煤气化制甲醇配套变换工艺分析  

Shift Process Analysis in Pulverized Coal to Methanol Plant

作　　者：庞睿 Pang Rui(SINOPEC Ningbo Engineering Co.,Ltd.,Ningbo Zhejiang 315103,China)

机构地区：[1]中石化宁波工程有限公司,浙江宁波315103

出　　处：《煤化工》2020年第5期32-36,57,共6页Coal Chemical Industry

摘　　要：介绍了粉煤气化制甲醇配套的高水气比、低水气比、动力学控制及等温变换等4种变换工艺流程及特点,从消耗、副反应的产生、催化剂装填量及经济性等方面对4种工艺进行分析对比。通过分析认为,等温变换工艺在经济性方面更具优势、能效最高;动力学控制变换工艺在甲烷化副反应的控制上优于其他工艺;与动力学控制变换工艺相比,低水气比变换工艺在甲烷化副反应控制方面有差距,两者经济性、能效相当;高水气比变换工艺能耗较高、经济性较差。The process flow and characteristics of four CO shift processes used in pulverized coal gasification plant to produce methanol,such as high water gas ratio,low water gas ratio,kinetic control and isothermal shift process,were introduced.The four shift processes were analyzed and compared from the aspects of consumption,side reaction,catalyst dosage and cost effectiveness.The results showed that the isothermal shift process had more advantages in economy,with highest energy efficiency.Kinetic control shift process was better than other processes in the methanation side reaction control.Compared with kinetic control shift process,low water gas ratio shift process had little difference in economy and energy efficiency,but still had certain gap in the methanation side reaction control.High water gas ratio shift process had high energy consumption and low economy.

关 键 词：粉煤气化 煤制甲醇 CO变换工艺 高水气比 低水气比 等温变换 动力学控制 

分 类 号：TQ546.4[化学工程—煤化学工程]