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基于MDEA + PZ复合吸收剂的CO2吸收特性与模拟研究
CO2 absorption characteristics and simulation research based on MDEA + PZ composite absorbents
- 低碳化学与化工 2025: 1-12.
- 作者机构：
1.新疆大学 西北能源碳中和教育部工程研究中心，新疆 乌鲁木齐 830017
2.新疆大学 电气工程学院，新疆 乌鲁木齐 830017
3.重庆大学 能源与动力工程学院 工程热物理研究所，重庆 400044
4.国家能源集团新能源技术研究院有限公司，北京 102211
- 作者简介：
美合日阿依·穆太力普（1989—），博士，副教授，博士研究生导师，研究方向为CO2捕集、利用与封存，E-mail：mhriay@xju.edu.cn。
- 基金信息：国家自然科学基金(52366010);国家重点研发计划(2024YFB4106101-2);新疆维尔自治区重点研发专项(2022B01033-2);“天山英才”计划-青年托举人才(2023TSYCQNTJ0035);自治区新疆维吾尔自治区中央引导地方科技发展专项(ZYYD2022C16);自治区高校基本科研项目(XJEDU2023P026)
DOI：10.12434/j.issn.2097-2547.20250317
中图分类号： TQ028.1收稿：2025-07-23，
修回：2025-08-22，
网络出版：2025-12-31，
- 稿件说明：
移动端阅览
美合日阿依·穆太力普 ,吕兵兵,刘欣甜等.基于MDEA + PZ复合吸收剂的CO2吸收特性与模拟研究[J].低碳化学与化工,
MEIHERIAYI Mutailipu,LV Bingbing,LIU Xintian,et al.CO2 absorption characteristics and simulation research based on MDEA + PZ composite absorbents[J].Low-Carbon Chemistry and Chemical Engineering,
美合日阿依·穆太力普 ,吕兵兵,刘欣甜等.基于MDEA + PZ复合吸收剂的CO2吸收特性与模拟研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250317.
MEIHERIAYI Mutailipu,LV Bingbing,LIU Xintian,et al.CO2 absorption characteristics and simulation research based on MDEA + PZ composite absorbents[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250317.
摘要
CO
2
捕集是实现碳减排目标的重要技术途径，其中使用醇胺吸收剂的化学吸收法应用较为广泛。为结合N-甲基二乙醇胺（MDEA）吸收量大、再生能耗低与哌嗪（PZ）反应动力学快的优势，将MDEA与PZ进行复配制备了一系列不同质量分数的MDEA + PZ复合吸收剂，通过综合分析CO
2
吸收速率、吸收量和CO
2
解吸速率等指标，筛选了CO
2
吸收性能最好的复合吸收剂。以该复合吸收剂为例，采用Aspen Plus对CO
2
捕集工艺进行了模拟。结果表明，20% MDEA + 10% PZ的吸收量最大（1.97 mol/L）、再生能耗最低（3.50 GJ/t）且再生率最高（100%）。以20% MDEA + 10% PZ作为复合吸收剂，当吸收塔板数和再生塔数均为20，烟气进口温度为40 ℃，溶剂入口温度为40 ℃，再沸器温度为120 ℃时，采用联合工艺（富液分流比0.10 +中间塔板级间抽取率40%）优化CO
2
捕集工艺后，CO
2
捕集率为99%，再生能耗为2.58 GJ/t。
Abstract
CO
2
capture is an important technical approach to achieving carbon emission reduction targets. Among them
the chemical absorption method using alkanolamine absorbents is widely applied. To combine the advantages of high absorption capacity and low regeneration energy consumption of N-methyldiethanolamine (MDEA) with the fast reaction kinetics of piperazine (PZ)
a series of MDEA + PZ composite absorbents with different mass fractions were prepared by blending MDEA and PZ. Through comprehensive analysis of indicators
such as CO
2
absorption rates
absorption capacities and CO
2
desorption rates
the composite absorbent with the best CO
2
absorption performance was screened. Taking the composite absorbent as an
example
the CO
2
capture process was simulated by Aspen Plus. The results show that 20% MDEA + 10% PZ exhibits the largest absorption capacity (1.97 mol/L)
the lowest regeneration energy consumption (3.50 GJ/t) and the highest regeneration rate (100%). Using 20% MDEA + 10% PZ as the composite absorbent and when the number of absorption tower plates and the number of regeneration towers are both 20
the inlet temperature of the flue gas is 40 ℃ and the temperature of the reboiler is 120 ℃
after optimizing the CO
2
capture process with the combined process (rich liquid split ratio of 0.10 + intermediate plate inter-stage extraction rate of 40%)
the CO
2
capture rate is 99% and the regeneration energy consumption is 2.58 GJ/t.
关键词
Keywords
references
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