改性钙基吸附剂在热解原位捕集CO<sub>2</sub>中的性能

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Abstract Addressing the challenge of high in-situ adsorption temperature in solid waste pyrolysis, we developed a series of calcium-based solid adsorbents by incorporating various minerals into natural limestone. Experimental investigations on the single adsorption and cyclic adsorption of CO₂ by these calcium-based solid adsorbents revealed that the adsorbent doped with 10% montmorillonite exhibited stable cyclic adsorption characteristics and a substantial adsorbent capacity, achieved a maximum CO₂ adsorption ratio of 71.52%. Even after 10cycles, the adsorption capacity remained at 43.77%, concurrently elevated the heat value of pyrolysis gas to 14kJ/g. Consequently, the calcium-based adsorbents doped with 10% montmorillonite demonstrated effective CO₂ capture and contribute to the enhanced calorific value of pyrolysis gas in solid waste co-pyrolysis.

Key words： pyrolysis gas carbon dioxide in-situ capture calcium based adsorbents montmorillonite

Received: 21 January 2024

PACS:

X703.5

Corresponding Authors: 苏明雪,工程师,smx123@mail.ustc.edu.cn E-mail: smx123@mail.ustc.edu.cn

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	GU Chun-han
	SU Ming-xue
	LI Ning
	ZHU Bing

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GU Chun-han,SU Ming-xue,LI Ning等. Research on modified calcium based adsorbents for in-situ CO₂ capture through pyrolysis[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(8): 4455-4461.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I8/4455

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