Comparative techno—economic and environmental assessment of hydrogen—to—carbon ratio adjustment strategies in biogas to methanol processes

Luan Xuebin; Jiao Zhiyu; Wang Yufei; Niu Congcong; Liu Xuandong; Xu Run; Xia Guofu; Li Hongwei; Zhang Le; Ma Jiaze

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Comparative techno—economic and environmental assessment of hydrogen—to—carbon ratio adjustment strategies in biogas to methanol processes

Updated：2026-09-17

- Comparative techno—economic and environmental assessment of hydrogen—to—carbon ratio adjustment strategies in biogas to methanol processes
- Chinese Journal of Chemical Engineering Vol. 95, Issue 7, Pages: 375-384(2026)
- Affiliations：
  
  SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 102206, China
  School of Chemical Engineering and Environment, China University of Petroleum (Beijing), Beijing 102249, China
  Department of Systems Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
- Author bio：
  
  *Corresponding authors. E-mail addresses:zhangle.ripp@sinopec.com(L. Zhang)
  *Corresponding authors. E-mail addresses:jiazema@cityu.edu.hk(J. Ma)
- Funds：
- DOI：
  CLC：
- Received：11 December 2025，
  
  Revised：2026-03-20，
  
  Accepted：29 March 2026，
  
  Online First：12 May 2026，
  
  Published：2026-07
- Accepted：
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Luan Xuebin, Jiao Zhiyu, Wang Yufei, et al. Comparative techno—economic and environmental assessment of hydrogen—to—carbon ratio adjustment strategies in biogas to methanol processes[J]. Chinese Journal of Chemical Engineering, 2026, 95(7): 375-384.
DOI：

Luan Xuebin, Jiao Zhiyu, Wang Yufei, et al. Comparative techno—economic and environmental assessment of hydrogen—to—carbon ratio adjustment strategies in biogas to methanol processes[J]. Chinese Journal of Chemical Engineering, 2026, 95(7): 375-384. DOI：

摘要

Abstract

This study investigates biogas as a renewable feedstock for green methanol production and compares three hydrogen—to—carbon (H/C) ratio adjustment strategies: (I)CO

removal before reforming

(II)CO

removal after reforming

and (III) green hydrogen supplementation. Each route is evaluated using high—fidelity process simulations

techno—economic analysis

and life cycle assessment. Route II achieves the lowest minimum selling price (419 USD·t- 1 at a capacity of 100 kt·a- 1)and lowest net greenhouse gas (GHG) emissions (144 kg CO

per tonne of methanol)

due to superior energy efficiency and carbon utilization. Route III offers the highest production yield but depends heavily on low—cost green hydrogen. Our findings identify optimal pathways for deploying biogas—to—methanol technologies under varying economic and policy conditions.

关键词

Keywords

references

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