不同绿氢耦合生物质气化制绿色甲醇工艺经济性分析  

Economic analysis of different processes of green hydrogen coupled with biomass gasification for green methanol production

作　　者：吴子波 张敬宇 吴路平 罗橙 张红瑞 张树杨 李俊英 WU Zibo;ZHANG Jingyu;WU Luping;LUO Cheng;ZHANG Hongrui;ZHANG Shuyang;LI Junying(State Key Laboratory of Industrial Vent Gas Reuse,National Engineering Research Center for C1 Chemistry,Southwest Institute of Chemical Co.,Ltd.,Chengdu 610225,Sichuan,China;Chlor-Alkali Chemical Industry Research Institute,Wuhai 016040,Inner Mongolia,China)

机构地区：[1]西南化工研究设计院有限公司工业排放气综合利用国家重点实验室,国家碳一化学工程技术研究中心,四川成都610225 [2]内蒙古君正氯碱化工技术研究院,内蒙古乌海016040

出　　处：《低碳化学与化工》2025年第3期97-105,共9页Low-Carbon Chemistry and Chemical Engineering

摘　　要：为研究不同绿氢耦合生物质气化制绿色甲醇工艺的经济性,以较有代表性的3种工艺(催化转化甲醇合成工艺、非催化转化甲醇合成工艺和弛放气提氢循环甲醇合成工艺)为研究对象,分别从固定资产投资、公用工程消耗和总成本费用对3种工艺进行了分析。结果表明,催化转化甲醇合成工艺、非催化转化甲醇合成工艺和弛放气提氢循环甲醇合成工艺固定资产投资依次降低,电解水制氢工序是3种工艺中投资最高的工序,优化该工序配置是降低投资的关键;非催化转化甲醇合成工艺副产蒸汽量最多,将生物质气化合成气出口高温气与转化反应气进行热量耦合是节能降耗的关键;一定条件下弛放气提氢循环甲醇合成工艺具有相对最高的经济性,当电价降至0.2 CNY/(kW·h)以内时,该工艺的总成本费用可低于2684.24 CNY/t。To study the economy of different processes of green hydrogen coupled with biomass gasification for green methanol production,three representative processes(catalytic conversion methanol synthesis process,non-catalytic conversion methanol synthesis process and methanol synthesis process with hydrogen extraction from purge gas for recycling)were taken as the research objects.Analyses were conducted on the three processes from fixed asset investments,utility consumptions and total costs,respectively.The results show that the fixed asset investments of catalytic conversion methanol synthesis process,non-catalytic conversion methanol synthesis process and methanol synthesis process with hydrogen extraction from purge gas for recycling decrease in turn.The electrolytic water hydrogen production process is the process with the highest investment in the three processes,and optimizing configuration of the process is the key to reducing investments.The non-catalytic conversion methanol synthesis process has the highest by-product steam output amounts,and heat coupling between the high-temperature gas of biomass gasification syngas and the conversion reaction gas is the key for energy-saving and cost-reducing.Under certain conditions,methanol synthesis process with hydrogen extraction from purge gas for recycling has relative highest economy,and the total cost of the process can lower than 2684.24 CNY/t when the electricity price is reduced to less than 0.2 CNY/(kW·h).

关 键 词：绿氢 生物质气化 催化转化 非催化转化 绿色甲醇 经济性分析 

分 类 号：TQ223.12[化学工程—有机化工]