低碳化学与化工2025，Vol.50Issue(6)：89-96,8.DOI:10.12434/j.issn.2097-2547.20240370
不同碳减排下生物质气化制绿色甲醇的经济性分析
Economic analysis of biomass gasification for green methanol production under different carbon emission reduction scenarios
摘要
Abstract
Under the"carbon peaking and carbon neutrality"background,the economic feasibility of biomass-based green methanol production was evaluated.Three biomass gasification-based green methanol production schemes were considered(Scheme 2 couples green hydrogen with Scheme 1,and Scheme 3 further utilizes the CO2 generated in the front-end processes of Scheme 2).Assuming a biomass daily processing capacity of 2000 t,green electricity price of 0.20 CNY/(kW·h),green hydrogen price of 1.1 CNY/m3 and green methanol sales price of 4500 CNY/t,the impact of biomass price on the annual net profit,investment payback period,unit operation cost and production cost of green methanol production was investigated.The results show that when the biomass price is 300 CNY/t,Scheme 1 achieves an annual net profit of 5.53×108 CNY,income tax payments of 1.84×108 CNY and an investment payback period of 4.4 years.Scheme 2 achieves an annual net profit of 7.80×108 CNY,income tax payments of 2.60×108 CNY and a payback period of 4.7 years.Scheme 3 achieves an annual net profit of 9.37×108 CNY,income tax payments of 3.12×108 CNY and a payback period of 5.2 years.Scheme 1 has the lowest unit operation cost for green methanol(1387 CNY/t),and the unit production cost is 1925 CNY/t.Scheme 3 produces the highest amount of green methanol(67×104 t/a),and under the same biomass price conditions,it results in higher annual net profit and income tax payments than Schemes 1 and 2.The break-even green methanol sales prices for Scheme 1,Scheme 2 and Scheme 3 are 1925 CNY/t,2433 CNY/t and 2635 CNY/t,respectively.Scheme 1 results in the highest CO2 emissions(56.3×104 t),whereas the process in Scheme 3 can achieve near-zero carbon emissions.When the carbon tax price is 79.42 CNY/t,Scheme 3 saves carbon tax expenses of 4470×104 CNY/a and 1950×104 CNY/a compared to Scheme 1 and Scheme 2,respectively.关键词
生物质气化/绿色甲醇合成/耦合/绿氢/碳减排Key words
biomass gasification/green methanol synthesis/coupling/green hydrogen/carbon emission reduction分类
化学工程引用本文复制引用
贺树民,彭万旺,王学云..不同碳减排下生物质气化制绿色甲醇的经济性分析[J].低碳化学与化工,2025,50(6):89-96,8.基金项目
国家重点研发计划(2023YFB4103802) （2023YFB4103802）
鄂尔多斯市国家可持续发展议程创新示范区建设科技支撑项目(KCX2024014) （KCX2024014）
天地科技股份有限公司科技创新创业资金专项项目(2023-2-TD-ZD022) （2023-2-TD-ZD022）
煤科院基金项目(MKYZX-001,2024ZD1-01). （MKYZX-001,2024ZD1-01）
