Chemical Industry and Engineering Progress ›› 2024, Vol. 43 ›› Issue (6): 3021-3028.DOI: 10.16085/j.issn.1000-6613.2023-0871

• Energy processes and technology • Previous Articles    

Carbon reduction and techno-economic analysis of using green hydrogen in chemical and petrochemical industry

ZHANG Zhen1,2(), ZHANG Fan1,3(), YUN Zhiting2   

  1. 1.Shandong Institute of Hydrogen Energy Technology, Jinan 251401, Shandong, China
    2.Low Carbon Convergence Development Institute, China EV100, Beijing 100085, China
    3.School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
  • Received:2023-05-25 Revised:2023-11-24 Online:2024-07-02 Published:2024-06-15
  • Contact: ZHANG Fan

绿氢在石化和化工行业的减碳经济性分析

张真1,2(), 张凡1,3(), 云祉婷2   

  1. 1.山东氢谷新能源技术研究院,山东 济南 251401
    2.中国电动汽车百人会低碳融合发展研究院,北京 100085
    3.西安交通大学能源与动力工程学院,陕西 西安 710049
  • 通讯作者: 张凡
  • 作者简介:张真(1980—),女,博士,研究方向为低碳能源与产业经济学。E-mail:zhangzhen@chinaev100.org

Abstract:

The low-carbon transformation of the petrochemical and chemical industries can be promoted by replacing hydrogen (i.e., gray hydrogen) made from fossil fuels such as coal and natural gas by hydrogen (i.e., green hydrogen) made from electrolysis of water using renewable energy power as petrochemical and chemical raw materials. Although the current cost of green hydrogen is higher, under the combined influence of decreasing electricity price, continuous increase of fossil energy price and carbon tax and carbon trading, the economy of green hydrogen will have the advantage of competing with gray hydrogen. Taking the three sub-sectors with the highest hydrogen consumption and carbon emission in the petrochemical and chemical industries as representatives, namely ammonia, synthetic methanol, and crude oil processing, this paper firstly introduces the process characteristics and development trends of hydrogen participation in petrochemical and chemical processes, including traditional and emerging processes, such as electrochemical ammonia synthesis, carbon dioxide hydrogenation to methanol, and bio-oil hydrodeoxygenation; then, the carbon emission of the petrochemical and chemical industries is summarized, focusing on the carbon emission intensity of ammonia, methanol, and refined diesel; finally, the carbon reduction economics of green hydrogen replacing current fossil fuel hydrogen production and industrial by-product hydrogen is analyzed. The results show that green hydrogen has an economically feasible cost of 14CNY/kg H2 to replace coal hydrogen when the carbon trading price is 100CNY/t.

Key words: hydrogen, carbon dioxide, synthesis, syngas, prediction

摘要:

通过使用可再生能源电力电解水所制取的氢气(即绿氢)来替代使用煤炭、天然气等化石燃料所制取的氢气(即灰氢)作为石化和化工原料,可以促进石化和化工行业低碳转型。虽然当前绿氢成本较高,但在电价不断下降、化石能源价格持续上涨以及碳税、碳交易的综合影响下,绿氢的经济性将具有与灰氢相竞争的优势。本文以石化和化工行业中氢气消费量和碳排放量最高的三个子行业为研究对象,即合成氨、合成甲醇、原油加工,首先介绍了氢气参与到石化和化工过程中的工艺特征和发展趋势,包括传统工艺和新兴工艺,如电化学合成氨、二氧化碳加氢制甲醇、生物油加氢脱氧;接着,对石化和化工行业碳排放进行总结,重点分析了氨、甲醇、精制柴油的碳排放强度;最后,对绿氢替代当前化石燃料制氢、工业副产氢的减碳经济性进行分析,结果表明在碳交易价格为100CNY/t时,绿氢具有替代煤制氢的经济可行性成本为14CNY/kg。

关键词: 氢, 二氧化碳, 合成, 合成气, 预测

CLC Number: 

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