Study on kinetic mechanism of carbon nanotubes for CO<sub>2</sub> capture from flue gas by hydrate method under low pressures

WANG Fang; AN Xiaosheng; MU Jinchi; LENG Shuai; ZHANG Ruiyang; GUO Lihong; ZHOU Ying

doi:10.12434/j.issn.2097-2547.20240200

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Study on kinetic mechanism of carbon nanotubes for CO₂ capture from flue gas by hydrate method under low pressures

更新时间：2025-02-27

- Study on kinetic mechanism of carbon nanotubes for CO₂ capture from flue gas by hydrate method under low pressures
- Vol. 50, Issue 2, Pages: 148-156(2025)
- 作者机构：
  
  1.西南石油大学油气藏地质及开发工程国家重点实验室，四川成都 610500
  2.西南石油大学新能源与材料学院，四川成都 610500
  3.四川金象赛瑞化工股份有限公司，四川眉山 620031
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240200
  CLC： TE09
- Received：08 May 2024，
  
  Revised：07 June 2024，
  
  Published：25 February 2025
- 稿件说明：
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王芳,安晓圣,穆金池等.低压下碳纳米管用于水合物法捕集烟道气中CO₂动力学机制研究[J].低碳化学与化工,2025,50(02):148-156.

WANG Fang,AN Xiaosheng,MU Jinchi,et al.Study on kinetic mechanism of carbon nanotubes for CO₂ capture from flue gas by hydrate method under low pressures[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):148-156.
王芳,安晓圣,穆金池等.低压下碳纳米管用于水合物法捕集烟道气中CO₂动力学机制研究[J].低碳化学与化工,2025,50(02):148-156. DOI： 10.12434/j.issn.2097-2547.20240200.

WANG Fang,AN Xiaosheng,MU Jinchi,et al.Study on kinetic mechanism of carbon nanotubes for CO₂ capture from flue gas by hydrate method under low pressures[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):148-156. DOI： 10.12434/j.issn.2097-2547.20240200.

摘要

水合物法作为低能耗CO

捕集技术，具有良好的应用前景。然而水合物法捕集CO

目前还存在CO

水合物生长速率较慢和CO

捕集效率较低等问题。通过结合第一性原理、蒙特卡洛模拟和动力学实验，研究了较低初始压力（0.50~4.50 MPa）下，碳纳米管用于水合物法捕集烟道气中CO

的动力学机制和捕集性能。结果表明，对于气体组成（体积分数计）为20% CO

+ 80% N

的烟道气，在0.10~0.50 MPa下，双壁碳纳米管可通过分子间范德华力优先吸附CO

，且CO

吸附量和CO

选择率均在0.80 MPa附近达到峰值。综合考虑，由质量分数为0.01%的多壁碳纳米管和物质的量分数为4%的四氢呋喃组成的复合促进剂体系在2.50 MPa下表现出较好的捕集性能，其CO

储气量为(3.54 ± 0.28) mmol/mol，诱导时间为(24.33 ± 1.53) min，CO

捕集效率为76.75% ± 5.49%。

Abstract

As a low energy consumption CO

capture technology

hydrate method has a good application prospect. However

there are still some problems such as slow CO

hydrates growth rate and low CO

capture efficiency in CO

capture by hydrate method. By combining first principles

Monte Carlo simulation and kinetic experiments

the kinetic mechanism and capture performance of carbon nanotubes for CO

capture from flue gas by hydrate method were studied under low initial pressure (from 0.50 MPa to 4.50 MPa). The results show that for the flue gas with the gas compositions (volume fraction) of 20% CO

and 80% N

double-walled carbon nanotubes have preferential adsorption of CO

through the inter

molecular van der Waals force under 0.10 MPa to 0.50 MPa. The CO

adsorption capacity and CO

selection rate both reach peak values near 0.80 MPa. Under comprehensive consideration

the compound accelerator system (multi-walled nanotubes mass fraction of 0.01% and tetrahydrofuran mole fraction of 4%) show relative good capture performance under 2.50 MPa

with the gas storage capacity of (3.54 ± 0.28) mmol/mol

the induction time of (24.33 ± 1.53) min and the CO

capture efficiency of 76.75% ± 5.49%.

关键词

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Study on kinetic mechanism of carbon nanotubes for CO2 capture from flue gas by hydrate method under low pressures

DOI：10.12434/j.issn.2097-2547.20240200

摘要

Abstract

关键词

Keywords

references

Study on kinetic mechanism of carbon nanotubes for CO₂ capture from flue gas by hydrate method under low pressures