• 论文
主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
基于富氧燃烧的CO2压缩纯化技术研究进展
  • Title

    Research progress of CO2 compression and purification technology based on oxy⁃fuel combustion

  • 作者

    江蓉张进李小姗倪宏伟赖勇杰曹峻张立麒

  • Author

    JIANG Rong,ZHANG Jin,LI Xiaoshan,NI Hongwei,LAI Yongjie,CAO Jun,ZHANG Liqi

  • 单位

    四川空分设备(集团)有限责任公司华中科技大学 煤燃烧国家重点实验室

  • Organization
    Sichuan Air Separation Plant Croup Co.,Ltd.;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology
  • 摘要

    作为一种燃烧中的碳捕集技术,富氧燃烧可实现烟气中CO2高浓度富集,在进行CO2的封存和利用之前,需要在CO2压缩纯化系统中对富含CO2的烟气进行净化、干燥和液化,便于运输和降低成本。现有研究表明CO2压缩纯化系统在高压低温的条件下可以分别实现SOx、NOx及Hg的一体化脱除,干燥脱水,分离O2、N2等杂质气体从而液化提纯CO2气体。基于富氧燃烧碳捕集技术,分别介绍了CO2压缩纯化系统中酸压缩污染物协同脱除技术,对酸压缩过程协同脱除SOx、NOx及Hg的反应机理以及相互作用机制进行了探讨;简述了二氧化碳脱水干燥的几种方法,对分子筛脱水技术进行了探究;对比分析了高浓度CO2液化提纯技术的主要方法以及CO2液化提纯系统所需的低温冷能获取方式。综述了国内外富氧烟气CO2压缩纯化技术的中试示范应用,并指出了下一步发展方向。我国酸压缩污染物协同脱除技术的示范应用滞后于CO2液化提纯技术,需明确酸压缩污染物协同脱除的具体机制及运行参数的影响,在国内开展同步实现SO2、NOx和Hg联合脱除的示范应用研究。目前的中试示范项目对于CO2压缩纯化系统各单元设备运行特性的研究不够深入,需进一步开发工艺并完善系统集成方案,进行百万吨级CO2压缩纯化系统方案集成研究,促进CO2压缩纯化技术大规模工业应用。


  • Abstract

    As a carbon capture technology in combustion process, oxy⁃fuel combustion can achieve a high concentration of COin flue gas. Before sequestering and utilizing CO2, the CO2⁃rich flue gas needs to be purified, dried and liquefied in a COcompression and purification system for ease of transportation and cost reduc⁃ tion. Current studies showed that the COcompression and purification system could achieve the combined removal of SOx, NOand Hg, dry dehydration, separation of O2, Nand other inert gases, and thus liquefy and purify COgas under high pressure and low temperature. Based on the oxy⁃fuel combustion carbon capture technology, the combined removal of pollutants by sour compression in COcompression and purification system was introduced, and the reaction mechanism and interaction mechanism of synergistic removal of SO, NOand Hg in the sour compression process were discussed. Several methods of dehydration and drying of carbon dioxide were briefly recommended, and a molecular sieve dehydration technology was explored. The main methods of high concentration COliquefaction purification technology and the way of obtaining low temperature cold energy required by the COliq⁃ uefaction purification system were compared and analyzed. The pilot scale and demonstration application of COcom⁃ pression purification technology for oxy⁃fuel flue gas at home and abroad were reviewed and the future development di⁃ rection was pointed out. The demonstration and application of the combined removal technology of acid compression pollutants lags behind the COliquefaction and purification technology in China. It is indispensable to clarify the spe⁃ cific mechanism of combined removal of acid compression pollutants and the impact of operating parameters, and carry out the demonstration and application study of simultaneous removal of SO2, NOand Hg in China. The current pilot scale demonstration project is not sufficient enough to study the operation characteristics of each unit of the COcom⁃ pression and purification system. Therefore, it is necessary to further develop the process and improve the system inte⁃ gration scheme, conduct the integration study of the one⁃million⁃ton COcompression and purification system scheme, and promote the large⁃scale industrial application of COcompression and purification technology.


  • 关键词

    富氧燃烧CO2压缩纯化酸压缩脱水干燥液化提纯

  • KeyWords

    oxy⁃fuel combustion; CO2 compression and purification; sour compression; dehydration and drying; liquid purification

  • 引用格式
    江蓉,张进,李小姗,等.基于富氧燃烧的 CO2压缩纯化技术研究进展[J].煤炭学报,2022,47(11):3914-3925.
  • Citation
    JIANG Rong,ZHANG Jin,LI Xiaoshan,et al.Research progress of CO2 compression and purification technology based on oxy⁃fuel combustion[J].Journal of China Coal Society,2022,47(11):3914-3925.
  • 相关专题
相关问题

主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

©版权所有2015 煤炭科学研究总院有限公司 地址:北京市朝阳区和平里青年沟东路煤炭大厦 邮编:100013
京ICP备05086979号-16  技术支持:云智互联