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“双碳”目标下CO2电还原在炼化行业应用的可行性
Feasibility on the Application of CO? Electroreduction in Refining and Chemical Industry Under the Dual Carbon Goals
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- DOI:
- 作者:
- 崔 崧，许 勐，吴 宇
Cui Song, Xu Meng, Wu Yu
- 作者单位:
- 中国石油大连石化公司
PetroChina Dalian Petrochemical Company
- 关键词:
- “双碳”目标；炼化行业；CO2电催化还原；碳资源化；低碳转型
dual carbon goals; refining and chemical industry; electrocatalytic CO2 reduction; carbon resource utilization; low-car? bon transition
- 摘要:
- 在“双碳”目标及能源结构转型的大背景下，石油炼化行业的高碳排放体量，给各炼化企业带来了沉重的减排压力，而传统减排路径又存在明显的局限性。因此电催化还原二氧化碳（CO2RR）凭借其反应条件温和、产物易调、适配绿电等突出优势，成为炼了化行业碳捕集转化与循环利用极具前景的新方向。文中梳理了炼化行业CO2排放特征及现有减排技术短板；系统综述了CO2RR制一氧化碳、甲酸、甲醇、乙烯和乙醇等产物的催化体系、工艺性能及国内外研究发展现状；讨论了CO2RR与炼化产业耦合适配性，同时客观对比各产物的技术特点及产业落地优势；明确了当前CO2RR遇到的技术瓶颈，并提出了切实可行的技术突破方向。Against the backdrop of the“Dual Carbon”goals and energy structure transition, the high carbon emission volume of thepetroleum refining and chemical industry imposes heavy emission⁃reduction pressure on refining and chemical enterprises. Conven⁃tional emission⁃reduction pathways are subject to notable limitations. Accordingly, electrocatalytic CO2 reduction reaction (CO2RR)has emerged as a highly promising new direction for carbon capture, conversion and recycling in the refining and chemical industry,owing to its prominent advantages including mild reaction conditions, tunable products and compatibility with green electricity. Thispaper first summarizes the CO2 emission characteristics of the refining and chemical industry and the shortcomings of existing emis⁃sion⁃reduction technologies. It then systematically reviews the catalytic systems, process performance and global research progressof CO2RR for producing carbon monoxide, formic acid, methanol, ethylene, ethanol and other products. The coupling adaptability be⁃tween CO2RR and the refining⁃chemical industry is discussed, and the technical features and industrial application advantages ofdifferent products are objectively compared. Finally, current technical bottlenecks of CO2RR are identified, and feasible directionsfor technological breakthroughs are proposed.