Статья

Research and application analysis on the pollution control of tail gas emissions from CO2 capture absorber

Shijian LuCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, ChinaChangjun ShenCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, ChinaMiaomiao LiuCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, ChinaJuanjuan ZhangCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, ChinaMengxiang FangCollege of Energy Engineering, Zhejiang University, 866 yuhangtang Road, Xihu District, Hangzhou, Zhejiang, 310058, ChinaFeng WangCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, ChinaQingfang LiCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, ChinaChao LiZhejiang Energy Group (China)Jian ZhangCarbon Neutrality Institute, China University of Mining and Technology, 1University Road, Xuzhou, Jiangsu,221116, China

2024en

ABI

Аннотация

• The absorbent emission rule after CO 2 capute by MEA, mixed amine absorbent and two-phase absorbent was systematically studied, and the effect of flue gas condensation nuclei, flue gas CO 2 concentration, lean liquid load, lean liquid temperature, liquid-gas ratio and flue gas inlet temperature of absorber on absorber escape were analyzed. • The emission control process method is proposed and calculated and analyzed in the feasibility study work of 2 million tons/year flue gas CO 2 capture project, which is the world's largest flue gas CO 2 capture project. • Considering comprehensive removal performance and economics, the combined control process incorporating the one-stage water washing and 7-m dry bed had the best performance, and the decline rate of absorbent emssion is 24.9%-41.8%, reaching0.180kg/tCO 2 , which reach the international leading level. Organic amine carbon dioxide capture technology is widely used for industrial carbon capture due to its mature technology, however, the emission of absorbent and degradation products can affect the carbon dioxide capture efficiency and increase the environmental health risk. This paper summarizes the types and current status of pollutant emissions from chemical absorption systems, and explores the effects of flue gas condensation nucleation occurring in different salt solutions, carbon dioxide concentration in the flue gas, lean liquid loading, liquid-to-gas ratio, flue gas inlet temperature of the absorber tower, and temperature of the lean liquid on pollutant emissions from carbon dioxide chemical absorption systems by means of a small test experiment with a flue gas treatment design capacity of 3.6 Nm 3 /h. At the same time, amine escape from a coal-fired power plant with a flue gas treatment capacity of about 1.4 million Nm 3 /h was also studied, and the control effects of different pollutant emission control measures were compared, and the best pollutant emission control measure was the combined control process of “secondary water washing + 7-meter dry bed”, with a reduction of organic amine absorber loss by 716.5 mg/Nm 3 , a reduction of 71.65% compared with the “primary water washing” control process.

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Идентификаторы

DOI: 10.1016/j.rineng.2024.103677

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar