Application of Sludge Coupling Power Generation Technology in Coal-fired Power Plant. Issue 4 (January 2021)

• Record Type: Journal Article
• Authors: Liu, Jinglong; Wang, Shouen; Wang, Jiaxin; Hou, Fanjun; Duan, Chuanjun; Zhang, Xudong; Zhao, Zhonghua; Cui, Fuxing; Liu, Ke; Wang, Haichao; Hu, Zhihong; Yang, Xingsen
• Is Part Of: IOP conference series. Volume 632:Issue 4(2021)
• Publication Date: 2021-01
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/632/4/042024
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The coal quality characteristics of urban sludge were analyzed, and three types of coal-sludge-coupled power generation technologies were introduced, including direct sludge mixing, flue gas direct drying sludge and steam indirect drying sludge coupling power generation. Three types of sludge coupling power generation technologies in coal-fired power plant were introduced, including direct sludge blending process, sludge blending after drying directly by flue gas and indirectly by steam. The control values of sludge blending ratio and moisture content after sludge drying are analyzed, and it is considered that the direct sludge blending ratio should be controlled within 5%. The moisture content after sludge drying should be controlled at 30-40% and the blending ratio should be controlled within 10%. The influence of sludge blending on the operation of the unit is analyzed. The operation of coal-fired boiler is stable, the quality of fly ash and slag has little change, and the emission of pollutants and heavy metals reaches the standard if the proportion of sludge mixed with combustion is controlled within 10%.