Inorganic Chemicals Industry >
Review of treatment and resource recovery of industrial fluoride-containing waste gas
Received date: 2020-08-12
Online published: 2021-05-12
Firstly,according to the development status and the problem of environmental pollution of fluorine chemical indus-try at home and abroad,the sources and treatment methods of fluorine-containing waste gas in various industries were ana-lyzed.Fluoride-containing waste gas sources mainly came from chemical engineering,metallurgy,building materials,thermo-electricity,semiconductor and other industries.The treatment methods included chemical decomposition,wet absorption and dry adsorption.Secondly,through the practical engineering cases,it introduced how to deal with the strong greenhouse waste gas of fluorides and fluorine-containing dust with low concentration,and emphatically the methods of producing anhydrous hydrogen fluoride,cryolite,fluorine salts,silica and other high value products by using fluoride-containing waste gas with high concentration or phosphate fertilizer by-product were introduced to solve the problem of industrial emission economically and effectively and realize the efficient utilization of fluorine and silicon resources.Finally,the future research focus of industrial fluorine-containing waste gas was prospected.
Jian Ou , Tianxiang Li , Yanfeng Sui , Qiang Wu , Linchuan Huang , Jing Zhu . Review of treatment and resource recovery of industrial fluoride-containing waste gas[J]. Inorganic Chemicals Industry, 2021 , 53(5) : 39 -46 . DOI: 10.11962/1006-4990.2020-0341
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