Study on performance and mechanism of CO<sub>2</sub> capture by liquid-solid phase change of PZ-AMP-<italic style="font-style: italic">n</italic>-butanol

LIU Ziwei; HAO Shanning; DING jing; TONG Hua

doi:10.12434/j.issn.2097-2547.20250027

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Study on performance and mechanism of CO₂ capture by liquid-solid phase change of PZ-AMP-n-butanol

更新时间：2025-12-25

- Study on performance and mechanism of CO₂ capture by liquid-solid phase change of PZ-AMP-n-butanol
- Vol. 50, Issue 12, Pages: 110-119(2025)
- 作者机构：
  
  北京化工大学化学工程学院，北京 100029
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250027
  CLC： TQ028
- Received：16 January 2025，
  
  Revised：2025-03-12，
  
  Published：25 December 2025
- 稿件说明：
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刘紫微,郝珊宁,丁静等.PZ-AMP-正丁醇液固相变捕集CO₂性能及机理研究[J].低碳化学与化工,2025,50(12):110-119.

LIU Ziwei,HAO Shanning,DING jing,et al.Study on performance and mechanism of CO₂ capture by liquid-solid phase change of PZ-AMP-n-butanol[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(12):110-119.
刘紫微,郝珊宁,丁静等.PZ-AMP-正丁醇液固相变捕集CO₂性能及机理研究[J].低碳化学与化工,2025,50(12):110-119. DOI： 10.12434/j.issn.2097-2547.20250027.

LIU Ziwei,HAO Shanning,DING jing,et al.Study on performance and mechanism of CO₂ capture by liquid-solid phase change of PZ-AMP-n-butanol[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(12):110-119. DOI： 10.12434/j.issn.2097-2547.20250027.

摘要

相变吸收工艺是降低有机胺捕集CO

能耗的有效途径。以哌嗪（PZ）-正丁醇液固相变CO

吸收剂为基础，引入2-氨基-2-甲基-1-丙醇（AMP）改善其解吸性能，构建了PZ-AMP-正丁醇三元相变吸收剂，并以吸收速率、吸收量、解吸速率和解吸量为指标对该吸附剂进行了PZ/AMP配比优化、吸收与解吸温度影响分析、吸收剂循环稳定性评价以及相变机理分析。结果表明，PZ-AMP-正丁醇具有良好的分相、吸收与解吸性能，在PZ与AMP的物质的量浓度之比为3.0:0.5时，PZ-AMP-正丁醇的CO

吸收量和吸收负荷均达到最大值，分别为2.92 mol/L和0.84 mol/mol，相比于30%（质量分数）MEA水溶液分别提高了44.2%和51.1%；AMP作用下（PZ与AMP的物质的量浓度之比为3.0:0.5），120 ℃时的解吸率为73.2%，比PZ-正丁醇二元吸收剂提升了18.8%；5次吸收-解吸循环负载量为1.84 mol/L，相比30% MEA提升了63.3%；PZ和AMP吸收CO

生成相应氨基甲酸酯并析出形成相变。

Abstract

The phase change absorption process is an effective way to reduce the energy consumption of CO

capture by organic amines. Based on piperazine (PZ)-

-butanol liquid-solid phase change CO

absorbent

2-amino-2-methyl-1-propanol (AMP) was used to improve its desorption performance

and the PZ-AMP-

-butanol ternary phase change absorbent was constrcted. The absorption rate

absorption quantity

desorption rate

and desorption amount were used as indicators to optimize the molar concentration ratio of PZ to AMP. The influence of absorption and desorption temperature was analyzed

and the absorbent cycle stability was evaluated

and the phase cha

nge mechanism of the ternary absorption system was analyzed. The results show that the PZ-AMP-

-butanol absorbent has good phase separation

absorption and desorption performances. When the molar concentration ratio of PZ to AMP is 3.0:0.5

the CO

absorption amount and absorption load of PZ-AMP-

-butanol reach their maximum values

which are 2.92 mol/L and 0.84 mol/mol

respectively

with 44.2% and 51.1% higher than those of 30% (mass fraction) MEA aqueous solution. Under the action of AMP (the molar concentration ratio of PZ to AMP is 3.0:0.5)

the desorption rate at 120 ℃ is 73.2%

which is 18.8% higher than that of PZ-

-butanol binary absorbent. The load capacity after five absorption-desorption cycles is 1.84 mol/L

which is 63.3% higher than that of 30% MEA. PZ and AMP absorb CO

to form the corresponding carbamate and separates out to form a phase change.

关键词

Keywords

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Related Institution

College of Chemical and Pharmaceutical Engineering, Wuhan Institute of Technology

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School of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan

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Study on performance and mechanism of CO2 capture by liquid-solid phase change of PZ-AMP-n-butanol

DOI：10.12434/j.issn.2097-2547.20250027

摘要

Abstract

关键词

Keywords

references

Study on performance and mechanism of CO₂ capture by liquid-solid phase change of PZ-AMP-n-butanol