Cyclone system for sludge drying

Abstract

The invention provides a cyclone system for sludge drying. The cyclone system comprises a material bin, a spiral conveying pipe, a high-speed cyclone cluster, an eccentric venturi pipe, a wedge-shapedtorque pipe splitter, a semi double duct cyclone separator, a tortuous centrifugal speed reduction settler and a spraying tower. Gas turbulent flow is utilized to preliminarily smash materials through the eccentric venturi pipe, the smashed materials are divided and sent into the semi double duct cyclone separator to be subjected to preliminary drying and separation, sludge containing large solidparticles can be directly discharged out or enters the eccentric venturi pipe again to be subjected to solid-liquid drying and separation, meanwhile, gas containing small particles enters the detourcentrifugal speed reduction settler to be subjected to secondary deep solid-liquid drying and separation, and finally the separated gas is input into the spraying tower to be treated so as to reduce pollution. The device is an unpowered part, and is designed in a modularized mode, the structure is compact, and the reliability is high.

Description

technical field

[0001] The invention mainly relates to the field of sludge drying, in particular to a cyclone system for sludge drying. Background technique

[0002] At this stage, the sludge reduction technology in sewage plants generally adopts the physical method of "gravity compression + mechanical dehydration". The water content of the sludge treated by this method is about 80%, and then it is transferred to other treatment units for subsequent treatment. For sludge with a water content of 80%, its volume is large, up to tens of millions of tons per day across the country. If it is buried, it will occupy a large amount of land, and even cause ground subsidence; if it is placed randomly on the open ground, it will cause secondary pollution, accompanied by stench, virus spread, environmental pollution, and even environmental disasters. At present, 65% sludge (80% water content) of a large number of sewage plants has not been effectively disposed of, mainly because of the...

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