化工进展2023，Vol.42Issue(12)：6620-6630,11.DOI:10.16085/j.issn.1000-6613.2023-0090
液化残渣基CO2吸附剂的制备与性能优化
Preparation and performance optimization of liquefied residue-based CO2 adsorbents
崔倩 1熊日华 1王岸楠 1陈再明 2孙峤昳 1王保登 1王永胜 3孙楠楠 4胡剑 2李井峰5
作者信息
- 1. 国家能源集团北京低碳清洁能源研究院,北京 102209
- 2. 国能浙江宁海发电有限公司,浙江 宁波 315612
- 3. 中国神华煤制油化工有限公司鄂尔多斯煤制油分公司,内蒙古 鄂尔多斯 017209
- 4. 中国科学院上海高等研究院低碳转化科学与工程重点实验室,上海 201210
- 5. 国家能源投资集团有限责任公司,北京 100011
- 折叠
摘要
Abstract
Using coal liquefaction residue(CLR)as the raw material to prepare CO2 adsorbents can effectively improve the economic and environmental value of direct coal liquefaction process while achieving carbon emission reduction,which is of great significance.The direct liquefaction residue of Shenhua coal was used as carbon source,and the CO2 adsorbents with better adsorption performance were prepared through the process of pre-oxidation and carbonization activation.The microstructure,pore size structure and adsorption properties of the adsorbents were characterized and tested by thermogravimetric analyzer(TGA),low temperature nitrogen adsorption instrument(BET),scanning electron microscope(SEM)and transmission electron microscope(TEM).The results showed that the adsorbents prepared from low ash liquefied residue had higher specific surface area and more microporous structure,which were more conducive to the adsorption of CO2.The CO2 adsorbent prepared from low ash liquefied residue under optimal activation conditions(mass ratio of activator/raw material was 1∶1,heating rate was 5℃/min,activation time was 1h)showed good adsorption performance.The CO2 adsorption capacity at 40℃and 15%CO2 simulated flue gas was 4.47%.At 0℃and 1bar,the CO2 adsorption capacity could be up to 27.70%,the low temperature adsorption performance was excellent,the adsorption rate was fast,and it had good cycle stability.关键词
煤液化残渣/二氧化碳/二氧化碳捕集/吸附剂/低温吸附Key words
coal liquefaction residual/carbon dioxide/CO2 capture/adsorbents/low temperature adsorption分类
化学化工引用本文复制引用
崔倩,熊日华,王岸楠,陈再明,孙峤昳,王保登,王永胜,孙楠楠,胡剑,李井峰..液化残渣基CO2吸附剂的制备与性能优化[J].化工进展,2023,42(12):6620-6630,11.
