Effect of SO2 on CO2 sorption characteristics using solid amine CO2 sorbent

ZHANG Wenjing; WU Ye; CAI Tianyi; LIU Daoyin; MA Jiliang; LIANG Cai; CHEN Xiaoping

doi:10.11949/j.issn.0438-1157.20170957

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Effect of SO₂ on CO₂ sorption characteristics using solid amine CO₂ sorbent

更新时间：2025-12-10

- Effect of SO₂ on CO₂ sorption characteristics using solid amine CO₂ sorbent
- CIESC Journal Issue 4, Pages: 1586-1594(2018)
- 作者机构：
  
  1. 东南大学能源热转换及其过程测控教育部重点实验室,江苏,南京,210096
  2. 南京理工大学电子设备热控制工业和信息化部重点实验室,江苏,南京,210094
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170957
  CLC： K09
- Online First：05 April 2018，
  
  Published：05 April 2018
- 稿件说明：
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ZHANG Wenjing, WU Ye, CAI Tianyi, et al. Effect of SO₂ on CO₂ sorption characteristics using solid amine CO₂ sorbent[J]. CIESC Journal, 2018, (4): 1586-1594. DOI: 10.11949/j.issn.0438-1157.20170957.
DOI：

ZHANG Wenjing, WU Ye, CAI Tianyi, et al. Effect of SO₂ on CO₂ sorption characteristics using solid amine CO₂ sorbent[J]. CIESC Journal, 2018, (4): 1586-1594. DOI: 10.11949/j.issn.0438-1157.20170957. DOI：

摘要

燃煤电厂烟气中存在的微量SO2对胺基CO2固体吸附剂的碳酸化反应及循环特性有不利影响。利用固定床反应器，针对采用溶胶凝胶法制备的胺基CO2固体吸附剂的碳酸化特性及其在含SO2气氛下的失效规律进行了实验研究，并结合红外光谱、有机元素分析、BET等测试手段，研究其失效机理。结果表明，所制备的胺基CO2固体吸附剂在反应温度50℃时具有较好的碳酸化反应特性和循环特性。当反应气氛中存在SO2时，由于生成了不可再生的亚硫酸/硫酸盐类物质而导致胺基活性位损失，孔隙结构发生变化，影响了吸附剂的脱碳性能，但适当提高反应温度可提高吸附剂的碳酸化反应竞争性。

Abstract

The presence of trace SO2 in the flue gas of the power plant will affect the CO2 sorption performance and cyclic characteristics of the solid amine sorbent. A solid amine-based CO2 sorbent was prepared by a one-pot sol-gel process followed by supercritical drying (SCD) and the CO2 sorption performance. Deactivation mechanism of the sorbent were studied by using fixed-bed reactor combined with infrared spectroscopy

BET and other test methods. The results show that the solid amine-based CO2 sorbent has excellent CO2 sorption performance and cyclic characteristics when the reaction temperature was 50℃. However

when the reaction atmosphere contains SO2

the non-renewable sulphite or sulfate byproducts reduces the utilization rate of active amine sites

thus significantly decreasing the CO2 adsorption capacity

and consequently

the cyclic characteristics were seriously affected. Besides

the pore distribution of sorbent also tends to small pore volume. Increasing the sorption temperature will enhance the CO2 sorption competivity of the amine based sorbent.

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