Harmless near-zero emission system for waste incineration fly ash and working method

The invention relates to the technical field of flue gas purification, in particular to a harmless near-zero emission system for waste incineration fly ash and a working method, and the system comprises a low-temperature pyrolysis subsystem, a heavy metal recovery subsystem, a three-stage countercur...

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Bibliographic Details
Main Authors GAO LEI, HAN ZHIMING, ZHANG MIAO, LIU YUKUN
Format Patent
LanguageChinese
English
Published 03.05.2024
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Summary:The invention relates to the technical field of flue gas purification, in particular to a harmless near-zero emission system for waste incineration fly ash and a working method, and the system comprises a low-temperature pyrolysis subsystem, a heavy metal recovery subsystem, a three-stage countercurrent washing subsystem and an evaporation salt separation subsystem. According to the harmless near-zero emission system for the waste incineration fly ash, near-zero emission of harmlessness, reduction and recycling of the waste incineration fly ash is achieved, treated detoxified mud cakes can be directly utilized, and the heavy metal content and the dioxin content of the mud cakes both meet the requirements of Technical Specification for Pollutant Control of Domestic Waste Incineration fly ash; the mass of the treated detoxified filter cake is 40% of the mass of the original fly ash; heavy metals, sodium salts, potassium salts and calcium salts in the fly ash are recovered and recycled; tail gas generated by the
Bibliography:Application Number: CN202410362447