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Method for processing acid mud in chimney smelting flue gas

A treatment method and technology for smelting flue gas, applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of safety and environmental protection hidden dangers in production sites, corrosion of chimney liner, blocked pipes, etc. Achieve the effect of eliminating hidden safety and environmental protection hazards, solving pipeline acid accumulation, and reducing corrosion

Active Publication Date: 2008-10-01
JINCHUAN GROUP LIMITED
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that there are many right-angle elbows in the connecting pipes and the positive pressure in the dry suction metering tank, this method of acid mud discharge often accumulates acid mud to block the pipes, resulting in corrosion of the chimney liner and potential safety and environmental protection hazards at the production site.

Method used

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  • Method for processing acid mud in chimney smelting flue gas

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Effect test

Embodiment

[0011] Connect the inclined pipe at the bottom of the smelting flue gas chimney, and directly enter the drying tower by adding a socket on the FRP pipe. The inclined pipe is made of CPVC, and the acid mud has good fluidity in it; the tail gas chimney and the drying tower form a certain pressure Poor, it is conducive to the flow of acid mud, use DN200CPVC (chlorinated polyvinyl chloride) pipe, enter the drying tower from the bottom of the chimney, install a butterfly valve before entering the tower to prevent excessive air leakage. The acid sludge is discharged into the drying tower for disposal.

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Abstract

A processing method for acid sludge in smelter off-gas chimney relates to a processing method for acid sludge in off-gas chimney during smelting process with metal sulphide ore as raw material, characterized that the processing method thereof comprises the following step of connecting an acid sludge discharging pipe which leads to a drying tower producing sulphuric acid system at bottom of the smelter off-gas chimney, so as to discharge acid sludge into the drying tower for treatment under the negative pressure. The pipeline for discharge acid sludge is an inclined one without pipeline binding so as to produce less resistance; since the height of the chimney bottom is more than that of a smoke.

Description

technical field [0001] The invention relates to a method for treating acid mud in a smelting flue gas chimney, and relates to a method for treating acid mud in a tail gas chimney during a smelting process using metal sulfide ore as a raw material. Background technique [0002] During the smelting process using metal sulfide ores as raw materials, a large amount of acid-containing fumes will be produced. In the process of using smelting flue gas to produce sulfuric acid, since many fine dust particles cannot be removed, they often enter the chimney with the tail gas, and after a certain amount of accumulation, they gradually become acid mud and deposit at the bottom of the chimney. At present, the treatment of the acid mud deposited at the bottom of the chimney is mostly to discharge the acid mud deposited in the exhaust chimney to a dry suction metering tank or an underground tank. Due to the fact that there are many right-angle elbows in the connecting pipes and the positi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D23/00C02F11/00F27D99/00
Inventor 甘宪福彭国华张宝才程华花李成
Owner JINCHUAN GROUP LIMITED
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