Evaluation and analysis of multi-process regulation routes for the modulus ratio of syngas from biomass gasification for green methanol production

WU Zibo; LUO Cheng; YANG Yunchao; ZHOU Xiang; LIU Lihao; LI Junying; YAN Fang; LI Lin; WU Luping; ZHENG Heng

doi:10.12434/j.issn.2097-2547.20260123

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Evaluation and analysis of multi-process regulation routes for the modulus ratio of syngas from biomass gasification for green methanol production

更新时间：2026-07-03

- Evaluation and analysis of multi-process regulation routes for the modulus ratio of syngas from biomass gasification for green methanol production
- Pages: 1-10(2026)
- 作者机构：
  
  西南化工研究设计院有限公司多孔材料与分离转化全国重点实验室，国家碳一化学工程技术研究中心，四川成都 610225
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20260123
  CLC： TQ223.12
- Received：16 March 2026，
  
  Revised：2026-05-14，
  
  Online First：29 June 2026，
- 稿件说明：
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吴子波,罗橙,杨运超等.生物质气化制绿色甲醇合成气氢碳比多工艺调控路线评估与分析[J].低碳化学与化工,

WU Zibo,LUO Cheng,YANG Yunchao,et al.Evaluation and analysis of multi-process regulation routes for the modulus ratio of syngas from biomass gasification for green methanol production[J].Low-Carbon Chemistry and Chemical Engineering,
吴子波,罗橙,杨运超等.生物质气化制绿色甲醇合成气氢碳比多工艺调控路线评估与分析[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20260123.

WU Zibo,LUO Cheng,YANG Yunchao,et al.Evaluation and analysis of multi-process regulation routes for the modulus ratio of syngas from biomass gasification for green methanol production[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20260123.

摘要

生物质气化制绿色甲醇工艺中，合成气氢碳比调控是整个工艺流程的关键，其直接决定了工艺的碳原子利用率、能耗水平和经济效益。以75000 m

/h（标况）的生物质合成气处理规模为基准，对合成气原位耦合绿氢氢碳比调控工艺、变换-低温甲醇洗协同氢碳比调控工艺、变换-变压吸附（PSA）协同氢碳比调控工艺和变换-N-甲基二乙醇胺（MDEA）协同氢碳比调控工艺进行了综合分析。结果表明，在当前技术水平和市场价格体系下，变换-MDEA协同氢碳比调控工艺具有最低的投资强度和良好的运营经济性，其单位产能投资为4032 CNY/(t·a)，财务内部收益率为35.26%，动态投资回收期为5.10 a。合成气原位耦合绿氢氢碳比调控工艺虽然具有较高的碳利用率和负碳排放潜力，但其经济性极度依赖于绿氢成本，属于长期战略性技术。

Abstract

In the process of methanol production from biomass gasification

the adjustment of hydrogen-to-carbon ratio of syngas serves as the key of entire process. It directly determines the carbon atom utilization efficiency

energy consumption level and ultimately the economic benefits of process. Based on a biomass syngas processing capacity of 75000 m

/h (standard conditions)

the green hydrogen coupling process

shift-low methanol synergistic process

shift-pressure swing adsorption (PSA) synergistic process and shift-N-methyldiethanolamine (MDEA) synergistic process were synthetically analyzed. The results indicate that under the current technological level and market pricing system

the shift-MDEA synergistic process demonstrates the lowest investment intensity and excellent operational economy

with the investment per unit capacity of 4032 CNY/(t·a)

the financial internal rate of return of 35.26% and the dynamic payback period of 5.10 a. Although the green hydrogen coupling process has a high carbon utilization rate and potential for negative carbon emissions

its economic viability is highly dependent on the cost of green hydrogen and it is a long-term strategic technology.

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