Cause analysis and countermeasure of blockage in urea pyrolysis denitration system of coal-fired power plant

Autor:	Yao Yongqi, Xiuru Liu, Peipei Li, Sha Gui, Fangming Xue, Wen Zhang, Wei Jianbo, Jiaxian Yang, Su Jingcheng
Rok vydání:	2021
Předmět:	Ammonia chemistry.chemical_compound Denitrification chemistry Waste management Scientific method Urea Environmental science Thermal power station Selective catalytic reduction Raw material Pyrolysis
Zdroj:	IOP Conference Series: Earth and Environmental Science. 651:022058
ISSN:	1755-1315 1755-1307
DOI:	10.1088/1755-1315/651/2/022058
Popis:	Due to the safety and convenience storage of raw materials and the maturing technology, the method of urea pyrolysis for ammonia has been widely used in the selective catalytic reduction (SCR) denitration technology of thermal power plants. However, crystallization and blockage phenomennons occured frequently, seriously disrupting the normal operation of SCR denitrification systems. In order to analysis the reasons of crystallization plugging in urea pyrolysis process, This paper collects and analyzes the scaling samples from pyrolysis furnace and spraying ammonia pipe to identify scaling substances, analyzes the reasons of urea crystallization, puts forward the improvement measures so as to guarantee the safety and steady operation of SCR-DeNOx system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e5d11bac27c43c6a84502fcf4a7548fa https://doi.org/10.1088/1755-1315/651/2/022058 Zobrazit plný text záznamu