甲基二乙醇胺-二元胺混合体系烟气CO2吸收再生性能研究
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。
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.
标题：甲基二乙醇胺-二元胺混合体系烟气CO2吸收再生性能研究
title:Study on CO2 Absorption and Regeneration Property of Flue Gas From Methyldiethanolamine-Amine Mixture System
作者：孙宇航, 李超, 王争荣, 孙路长, 王凯亮, 胡昔鸣, 方梦祥, 张锋
authors:Yuhang SUN, Chao LI, Zhengrong WANG, Luchang SUN, Kailiang WANG, Ximing HU, Mengxiang FANG, Feng ZHANG
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,
keywords:carbon capture, utilization and storage (CCUS),absorption property,regeneration property,methyldiethanolamine (MDEA),diamine,
发表日期：2024-06-30
- 文件大小:
- 3.14 MB
- 下载次数:
- 60
-
高速下载
|
