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

Zhun Li ¹Jinyang Zhao ²Ping Li ¹Yadong Yu ²Chenxi Cao³

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作者信息

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;Engineering Research Center of Process System Engineering,Ministry of Education,East China University of Science and Technology,Shanghai 200237,China
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Abstract

CO2-based carbon-neutral organics production processes could potentially reshape the chemical in-dustry.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

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出版年

2024

中国化学工程学报(英文版)

中国化工学会

中国化学工程学报(英文版)

CSTPCDEI

影响因子：0.818

ISSN：1004-9541

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