发电技术 ›› 2024, Vol. 45 ›› Issue (3): 468-477.DOI: 10.12096/j.2096-4528.pgt.23108

• 碳中和 • 上一篇    下一篇

甲基二乙醇胺-二元胺混合体系烟气CO2吸收再生性能研究

孙宇航1, 李超1, 王争荣2, 孙路长2, 王凯亮2, 胡昔鸣3, 方梦祥1, 张锋4   

  1. 1.能源高效清洁利用全国重点实验室(浙江大学), 浙江省 杭州市 310027
    2.中国华电科工集团有限公司, 北京市 丰台区 100160
    3.浙江大学青山湖能源研究基地, 浙江省 杭州市 311300
    4.国网浙江省电力有限公司建设分公司, 浙江省 杭州市 310008
  • 收稿日期:2023-11-07 修回日期:2023-12-15 出版日期:2024-06-30 发布日期:2024-07-01
  • 通讯作者: 方梦祥
  • 作者简介:孙宇航(1998),男,硕士研究生,主要从事碳捕集化学吸收剂配方研究,syh19981203@163.com
    王争荣(1984),男,硕士,高级工程师,主要从事燃煤电厂节能减排、碳捕集与利用技术等研究,wangzr@chec.com.cn
    方梦祥(1965),男,博士,教授,主要从事煤和生物质流化床热解、气化、燃烧,CO2化学吸收技术等研究,本文通信作者,mxfang@zju.edu.cn
  • 基金资助:
    浙江省尖兵计划项目(2022C03040);中国华电集团公司“揭榜挂帅”项目(CHDKJ21-01-109);中央高校基本科研业务费专项资金(2022ZFJH004)

Study on CO2 Absorption and Regeneration Property of Flue Gas From Methyldiethanolamine-Amine Mixture System

Yuhang SUN1, Chao LI1, Zhengrong WANG2, Luchang SUN2, Kailiang WANG2, Ximing HU3, Mengxiang FANG1, Feng ZHANG4   

  1. 1.National Key Laboratory of Energy Efficiency and Clean Utilization (Zhejiang University), Hangzhou 310027, Zhejiang Province, China
    2.China Huadian Engineering Co. , Ltd. , Fengtai District, Beijing 100160, China
    3.Qingshan Lake Energy Research Base, Zhejiang University, Hangzhou 311300, Zhejiang Province, China
    4.State Grid Zhejiang Electric Power Co. , Ltd. Construction Branch, Hangzhou 310008, Zhejiang Province, China
  • Received:2023-11-07 Revised:2023-12-15 Published:2024-06-30 Online:2024-07-01
  • Contact: Mengxiang FANG
  • Supported by:
    Zhejiang Province Spearhead Plan Project(2022C03040);China Huadian Group Co., Ltd. “Reveal The List” System Project(CHDKJ21-01-109);Special Funds for Basic Scientific Research Operations of Central Universities(2022ZFJH004)

摘要:

目的 研究甲基二乙醇胺(MDEA)与不同二元胺混合后配方的吸收再生性能。 方法 在体积分数12%的CO2和88%的N2模拟烟气环境下,以MDEA为主剂,分别添加乙二胺(EDA)、1,3-丙二胺(DAP)、3-甲氨基丙胺(MAPA)、羟乙基乙二胺(AEEA)、N,N-二甲基乙二胺(DMEDA)和N,N-二甲基-1,3-丙二胺(DMPDA)作为活化剂。在总胺质量分数为40%的条件下,以主剂与活化剂的质量比1∶1、2∶1、3∶1配置化学吸收剂。通过比较鼓泡吸收和油浴再生实验,得到不同吸收剂的吸收速率、再生速率和循环容量,筛选出性能优良的吸收剂配方。 结果 MDEA-EDA体系在MDEA与EDA的质量比1∶1时吸收性能最佳;MDEA-DMEDA体系在MDEA与DMEDA的质量比2∶1时再生性能最佳,循环容量达到1.7 mol/kg;MDEA-AEEA体系在MDEA与AEEA的质量比1∶1时整体性能达到最优,循环容量可以达到1.49 mol/kg。 结论 研究结果可为工业上混合胺液的配方优选提供理论依据。

关键词: 碳捕集、利用与封存(CCUS), 吸收性能, 再生性能, 甲基二乙醇胺(MDEA), 二元胺

Abstract:

Objectives The absorption and regeneration properties of different formulations of methyldiethanolamine (MDEA) mixed with different diamines were studied. Methods In the simulated flue gas environment with 12% CO2 and 88% N2, MDEA was used as the main agent, while ethylenediamine (EDA), 1,3-diaminopropane (DAP), N-methyl-1,3-propanediamine (MAPA), aminoethylethano-lamine (AEEA), N,N-dimethylethylenediamine (DMEDA) and 3-dimethylaminopropylamine (DMPDA) were added as activators, respectively. Under a total amine concentration of 40%, the chemical absorbent was configured with mass ratios of main agent to activator of 1∶1, 2∶1 and 3∶1, respectively. The absorption rate, regeneration rate and circulation capacity of different absorbers were determined by comparing bubble absorption and oil bath regeneration experiments. Results MDEA-EDA system has the best absorption property when the mass ratio of MDEA to EDA is 1∶1. The MDEA-DMEDA system has the best regeneration property when the mass ratio of MDEA to DMEDA is 2∶1, with a circulation capacity reaching 1.7 mol/kg. The overall properties of MDEA-AEEA system are optimized when the mass ratio of MDEA to AEEA is 1∶1, with a cycle capacity reaching 1.49 mol/kg. Conclusions The research results can provide a theoretical basis for the formulation optimization of mixed amine solutions in industry.

Key words: carbon capture, utilization and storage (CCUS), absorption property, regeneration property, methyldiethanolamine (MDEA), diamine

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