将水电解、CO₂捕集、风力发电引入甲醇生产,在200 t/d的产能下,利用Aspen Plus对天然气重整、煤气化、CO₂直接加氢3种路线生产甲醇进行流程模拟,并依据模拟结果进行成本估算、碳排放分析和敏感性分析,分析引入电解水、CO₂捕集和风力发电的经济和环境效益。结果显示,在200 t/d的产能下,路线三(CO₂直接加氢)的成本高达9 944.1元/t,远高于路线一(天然气重整,2 595.2元/t)和路线二(煤气化,2 266.5元/t),但路线三每t甲醇生产可减少CO₂排放0.57 t,相比另外2种方式的高额碳排放(0.67 t CO₂/t MeOH和2.29 t CO₂/t MeOH)具有巨大的优势。当电解水成本下降和高额碳税存在时,路线三有望实现商业应用。

Water electrolysis,CO₂ capture,and wind power are used in methanol production.Under a production capacity of 200 tons per day,three methanol production routes,including natural gas reforming,coal gasification,and CO₂ direct hydrogenation,are simulated by Aspen Plus software.Based on the simulation results,cost estimation,carbon dioxide emission analysis and sensitivity analysis are carried out.The economic and environmental benefits in using water electrolysis,CO₂ capture,and wind power are analyzed.It is shown that under a production capacity of 200 tons per day,the cost of CO₂ direct hydrogenation route is as high as RMB 9 944.1 per ton,much higher than RMB 2 595.2 per ton of natural gas reforming route and RMB 2 266.5 per ton of coal gasification route.CO₂ direct hydrogenation route can reduce CO₂ emissions by 0.57 tons per ton of methanol production,on the contrary,natural gas reforming route will discharge 0.67 tons of CO₂ per ton of methanol production,and coal gasification route will discharge 2.29 tons of CO₂ per ton of methanol production.CO₂ direct hydrogenation route is expected to achieve commercial application if the cost of water electrolysis falls further and high carbon taxes execute.

刘健(1997-),男,硕士生。