Study on the influencing factors of the adsorption performance of carbon materials for the sulfur dioxide removal

被引：0

作者：

Li X. ^{[1
,2
,3
]}

Huang H. ^{[2
,3
]}

Osaka Y. ^{[4
]}

Huhe T. ^{[1
,5
]}

Xiao L. ^{[2
,3
]}

Li J. ^{[2
,3
]}

机构：

[1] School of Mechanical and Power Engineering, Nanjing Tech University, Jiangsu, Nanjing

[2] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangdong, Guangzhou

[3] Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangdong, Guangzhou

[4] Kanazawa University, Kanazawa

[5] Institute of Urban and Rural Mining, Changzhou University, Jiangsu, Changzhou

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 09期

关键词：

adsorbents; carbon materials; desulfurization performance; environment; fixed-bed; sulfur dioxide removal;

D O I：

10.16085/j.issn.1000-6613.2021-2205

中图分类号：

学科分类号：

摘要：

Carbon materials can be used as excellent adsorption desulfurization materials. Their sulfur dioxide (SO2) capture performance is affected by physicochemical characteristics and desulfurization conditions. In this study, seven types of carbon materials were selected: activated carbon-1 (specific surface area was 1779m2/g, AC-1700), activated carbon-2 (specific surface area was 970m2/g, AC-900), porous nano-carbon-1 (average pore size was 14nm, NCP-10), porous nano-carbon-2 (average pore size was 85nm, NCP-100), porous nano-carbon-3 (average pore size was 4.7nm, nitrating, CMK-3N), porous nano-carbon-4 (average pore size was 4.1nm without nitrating, CMK-3) and carbon nanofibers (NCF). Based on the comparison of the physicochemical characteristic of these seven different carbon materials and their desulfurization performance, the effects of physicochemica properties, desulfurization temperature, reaction space velocity and so on on the SO2 capture performance of carbon materials were studied. It provided guidance for the research and development of carbon materials and their composites with suitable physical and chemical properties and high desulfurization performance. The results showed that the SO2 capture performance of carbon materials was comprehensive affected by the specific surface area, pore structure, surface functional groups, desulfurization temperature and reaction space velocity. The pore structure and surface functional groups of different carbon materials had great influence on the desulfurization performance of the carbon materials. The activated carbon AC-1700 and AC-900 with microporous structure had a higher SO2 removal rate. The porous nano-carbon NCP-10, NCP-100, CMK-3N and CMK-3 with mesoporous structure had a higher desulfurization capacity. Oxygen functional groups and nitrogen functional groups can improve the adsorption performance of carbon materials for SO2 capture. The process of SO2 removal by carbon materials was mainly physical adsorption. The SO2 capture performance of carbon materials decreased with increasing desulfurization temperature. Above 100°C, the SO2 capture performance of carbon materials would be ineffective. The reaction space velocity had a great influence on the SO2 capture performance of carbon materials. With the decrease of reaction space velocity, the SO2 capture performance of carbon materials increased. When the reaction space velocity was low enough, carbon materials can effectively remove SO2 pollution. In this study, porous nano-carbon NCP-10 had the best SO2 capture performance, which can maintain 100% SO2 removal rate at room temperature for 1 hour, and the 1 hour cumulative desulfurization capacity was up to 108mgSO2/gmaterial at room temperature while maintaining a SO2 removal rate of higher than 90%. © 2022 Chemical Industry Press. All rights reserved.

引用

页码：4963 / 4972

页数：9

共 20 条

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