化工进展 ›› 2023, Vol. 42 ›› Issue (3): 1257-1269.DOI: 10.16085/j.issn.1000-6613.2022-0915

• 能源加工与技术 • 上一篇    下一篇

全球可再生能源电转甲烷的应用

张巍1(), 王锐2(), 缪平2, 田戈3   

  1. 1.国家能源投资集团有限公司,北京 100011
    2.国家能源集团北京低碳清洁能源研究院,北京 102211
    3.北京 中研正达绿色科技有限公司,北京 101200
  • 收稿日期:2022-05-17 修回日期:2022-07-13 出版日期:2023-03-15 发布日期:2023-04-10
  • 通讯作者: 王锐
  • 作者简介:张巍(1982—),男,工程师,研究方向为能源电力。E-mail:wei.zhang@chnenergy.com.cn

Application research progress of renewable power-to-methane

ZHANG Wei1(), WANG Rui2(), MIAO Ping2, TIAN Ge3   

  1. 1.National Energy Investment Group,Beijing 100011, China
    2.National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China
    3.Beijing Chemaxons Technology Co. , Ltd. , Beijing 101200, China
  • Received:2022-05-17 Revised:2022-07-13 Online:2023-03-15 Published:2023-04-10
  • Contact: WANG Rui

摘要:

电转甲烷技术(PtM)是将可再生能源电力转变为氢气后,再与CO2进行甲烷化制取可再生天然气的过程,是可再生能源制天然气、电网平衡、长时储能与脱碳技术相耦合的综合能源系统关键技术。本文综述了全球典型的电转甲烷储能示范项目及其进展,详细分析了所采用的CO2甲烷化工艺技术,总结了不同类型的甲烷化反应器工艺的设计特点,包括项目规模、工艺路线、操作条件和反应性能等。最后对比分析了化学甲烷化和生物甲烷化两种技术路线的特点,包括反应器体积、杂质要求、动态响应等,以期为今后我国电转甲烷技术的开发和示范应用提供有价值的参考。

关键词: 可再生能源, 储能, CO2甲烷化, 电转气, 氢能

Abstract:

Power-to-Methane (PtM) technology refers to process of converting renewable power into a synthetic natural gas by combining water electrolysis to green hydrogen with CO2 methanation. PtM process is a crucial energy system technology that integrates renewable natural gas, grid balancing, long-term energy storage and decarbonization. In this paper, the progress of typical PtM demonstration projects worldwide is reviewed, and CO2 methanation technologies are comprehensively analyzed, including the projects and progress, technology route, operation conditions and reaction characteristics. Finally, the characteristics of chemical and biological methanation routes are compared, including reactor volume, contaminants resistance, dynamic response, etc., which would provide valuable references for the development and demonstration of PtM technology in China.

Key words: renewable energy, energy storage, CO2 methanation, power-to-gas, hydrogen

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