Flying ash desalination and water washing device

Abstract

The invention relates to a flying ash desalination and water washing device. One end of a feeding pipeline is connected with a warehouse; the other end of the feeding pipeline is connected with a feeding device; the feeding device feeds flying ash and water onto filter cloth of a vacuum belt conveyor according to a solid-to-liquid ratio being 1:4 in a mixed way; a vacuum box is arranged in the vacuum belt conveyor; a conveying belt of the vacuum belt conveyor is filter cloth; the filter cloth covers the vacuum box; a microporous membrane is used on the filter cloth for membrane adsorption; a filter cloth tensioning device, a filter cloth deviation rectifying device and an ultrasonic cleaning device are also arranged in the vacuum belt conveyor; a vacuum suction device comprises a vacuum pump and five groups of liquid discharge tanks; the five groups of liquid discharge tanks are connected with the vacuum pump and are sequentially distributed from left to right; the vacuum box is in a vacuum state through the vacuum pump; the atomizing type mixing is performed through the liquid discharge tanks; in addition, a chaotropic agent with 1 mass percent of flying ash is added, so that mixtures on the filter cloth are uniformly mixed; a water solution in a flying ash solution subjected to water washing is sucked away through suction, so that the solid-liquid separation effect is achieved; ash water is separated into a salt-containing solution and wet ash with the water content being about 30 percent.

Description

Technical field: [0001] The invention relates to the field of fly ash processing equipment, and more specifically relates to a fly ash desalination washing device. Background technique: [0002] Fly ash is the residue of waste incineration, and 90% of the carcinogen "dioxin" produced by waste incineration is in the fly ash. Improper handling of fly ash that has not been solidified, and a large amount of heavy metals and dioxins in it will cause serious pollution accidents and endanger the health of residents. At present, only a few cities across the country are dealing with waste incineration fly ash. On the one hand, the cost of fly ash disposal is very high. On the other hand, due to the unregulated market, insufficient supervision and vicious competition, the "fly ash" is in a state of "flying randomly". If fly ash cannot be safely disposed of, it will be a great hidden danger to the environment. [0003] Because fly ash contains a large amount of chloride ions, chlor...

AI Technical Summary

Problems solved by technology

On the one hand, the cost of fly ash disposal is high

On the other hand, due to the unregulated market, inadequate supervision and vicious competition, the "fly ash" is in a state of "flying randomly".

If fly ash cannot be disposed of safely, it will be a great hidden danger to the environment

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