Conical screw heat accumulation type fuel-gas pyrolyzing system for electronic waste

Abstract

The invention relates to the technical field of the pyrolyzation of waste, and particularly relates to a conical screw heat accumulation type fuel-gas pyrolyzing system for electronic waste. The system comprises a raw material treating system, a metal recovering system and an electronic waste pyrolyzation reaction system, wherein the raw material treating system comprises a crushing device and a sorting device; the metal recovering system comprises an acid leaching tank and an electrolytic tank; the electronic waste pyrolyzation reaction system comprises an electronic waste pyrolyzation reactor, a heat accumulation type fuel-gas heating system and a cooling and separating system, wherein the electronic waste pyrolyzation reactor comprises a material pyrolyzing component and a reactor shell; the material pyrolyzing component comprises a conical screw shell and a conical boosting screw; the heat accumulation type fuel-gas heating system comprises a heat accumulation type combusting device and a fume passage; the cooling and separating system comprises an indirect heat exchanger and a cooling tower. The system has the advantages of being high in pyrolyzation efficiency, continuous in material feeding and discharging, saving energy, protecting environment and the like.

Description

technical field [0001] The invention relates to the technical field of garbage pyrolysis, in particular to a conical spiral regenerative gas electronic waste pyrolysis system. Background technique [0002] In recent years, all kinds of electronic products are changing with each passing day, and the new and old replacements are getting faster and faster, and the resulting electronic waste is increasing exponentially. The heavy metal elements contained in it will seriously pollute the environment. If electronic waste is not handled properly, it will produce toxic and harmful gases such as dioxin, causing secondary pollution. At present, the processing methods for electronic circuit boards mainly include mechanical physical methods, metallurgical extraction methods, biological treatment methods, and pyrolysis methods, among which mechanical physical methods, metallurgical extraction methods, and biological treatment methods mainly focus on the metal in circuit boards. Recyclin...

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Problems solved by technology

The heavy metal elements contained in it will seriously pollute the environment. If electronic waste is not handled properly, it will produce toxic and harmful gases such as dioxin and cause secondary pollution.

At present, the processing methods for electronic circuit boards mainly include mechanical physical methods, metallurgical extraction methods, biological treatment methods, and pyrolysis methods, among which mechanical physical methods, metallurgical extraction methods, and biological treatment methods mainly focus on the metal in circuit boards. Recycling, the pyrolysis method can not only recycle the metal in the circuit board, but also realize the recycling of non-metallic components such as resin and glass fiber in the circuit board. The traditional pyrolysis method cannot realize continuous feeding and discharging, and the pyrolysis process is complex and thermal Low solution efficiency and high energy consumption

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