SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2024, Vol. 75 ›› Issue (11): 86-101.DOI: 10.1016/j.cjche.2024.07.013

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A comparative techno-economic analysis for implementation of carbon dioxide to chemicals processes

Zhun Li1, Jinyang Zhao2, Ping Li1, Yadong Yu2, Chenxi Cao3,4   

  1. 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. School of Business, East China University of Science and Technology, Shanghai 200237, China;
    3. Key Laboratory of Smart Manufacturing in Energy Chemical Process, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
    4. Engineering Research Center of Process System Engineering, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
  • Received:2023-10-23 Revised:2024-07-12 Accepted:2024-07-15 Online:2024-08-23 Published:2024-11-28
  • Contact: Ping Li,E-mail:lipingunilab@ecust.edu.cn;Chenxi Cao,E-mail:caocx@ecust.edu.cn
  • Supported by:
    This work is supported by National Key Research & Development Program-Intergovernmental International Science and Technology Innovation Cooperation Project (2021YFE0112800), National Natural Science Foundation of China (Key Program: 62136003), National Natural Science Foundation of China (62273149), the Programme of Introducing Talents of Discipline to Universities (the 111 Project) under Grant B17017 and the Fundamental Research Funds for the Central Universities.

A comparative techno-economic analysis for implementation of carbon dioxide to chemicals processes

Zhun Li1, Jinyang Zhao2, Ping Li1, Yadong Yu2, Chenxi Cao3,4   

  1. 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. School of Business, East China University of Science and Technology, Shanghai 200237, China;
    3. Key Laboratory of Smart Manufacturing in Energy Chemical Process, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
    4. Engineering Research Center of Process System Engineering, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
  • 通讯作者: Ping Li,E-mail:lipingunilab@ecust.edu.cn;Chenxi Cao,E-mail:caocx@ecust.edu.cn
  • 基金资助:
    This work is supported by National Key Research & Development Program-Intergovernmental International Science and Technology Innovation Cooperation Project (2021YFE0112800), National Natural Science Foundation of China (Key Program: 62136003), National Natural Science Foundation of China (62273149), the Programme of Introducing Talents of Discipline to Universities (the 111 Project) under Grant B17017 and the Fundamental Research Funds for the Central Universities.

Abstract: CO2-based carbon-neutral organics production processes could potentially reshape the chemical industry. However, their feasibility and net carbon footprint rely strongly on the sources of H2. Herein, we present a comprehensive comparative techno-economic analysis of CO2-based methanol (CO2TM) and α-olefins (CO2TO) manufacturing using various feedstock supply modes: (1) the standalone mode with external CO2 but H2 from on-site water electrolysis, (2) the integrated mode with both CO2 and H2 recovered from coal-chemical plants, and (3) the integrated mode with recycled CO2 but H2 from on-site water electrolysis. The integration of CO2TM and CO2TO into coal-to-olefins (CTO) and coal-to-methanol (CTM) facilities is currently cost-effective and can reduce net CO2 emissions by 65.7% and 68.5%, resulting in a three-fold and two-fold increase in carbon efficiency, respectively. As carbon tax policies and electrolysis technologies continue to evolve, standalone CO2TM and CO2TO are projected to become more economically competitive than CTO and CTM by 2035-2045.

Key words: CO2 hydrogenation, α-Olefins, Methanol, Techno-economic analysis, Power to chemicals

摘要: CO2-based carbon-neutral organics production processes could potentially reshape the chemical industry. However, their feasibility and net carbon footprint rely strongly on the sources of H2. Herein, we present a comprehensive comparative techno-economic analysis of CO2-based methanol (CO2TM) and α-olefins (CO2TO) manufacturing using various feedstock supply modes: (1) the standalone mode with external CO2 but H2 from on-site water electrolysis, (2) the integrated mode with both CO2 and H2 recovered from coal-chemical plants, and (3) the integrated mode with recycled CO2 but H2 from on-site water electrolysis. The integration of CO2TM and CO2TO into coal-to-olefins (CTO) and coal-to-methanol (CTM) facilities is currently cost-effective and can reduce net CO2 emissions by 65.7% and 68.5%, resulting in a three-fold and two-fold increase in carbon efficiency, respectively. As carbon tax policies and electrolysis technologies continue to evolve, standalone CO2TM and CO2TO are projected to become more economically competitive than CTO and CTM by 2035-2045.

关键词: CO2 hydrogenation, α-Olefins, Methanol, Techno-economic analysis, Power to chemicals