Melting furnace waste gas filtering system

Abstract

The present invention discloses a melting furnace waste gas filtering system. The system comprises a spraying tower, a filtering tank set, and a spraying tower waste gas refiltration system. According to the spraying tower, the space inside the spraying tower is separated by at least two filtration layers, wherein the two filtration layers can move up and down, and can be added or disassembled. In the orthogonal projections of any adjacent filter screen plates, the projections of the screen holes are not superposed. The filtering tank set comprises three filtering tanks. The central axis line of the filtering pipe between the adjacent filtering tanks forms a certain included angle with the horizontal plane, and the included angle is gradually decreased from upstream to downstream. The melting furnace waste gas filtering system further comprises a gas exhaust well, a well cover and the filtering pipes, wherein the filtering pipe are arranged transversely. The melting furnace waste gas filtering system of the present invention has the following advantages that: various gases with different types can be comprehensively and effectively filtered and purified, and the waste gas filtration effect is substantially improved.

Description

technical field [0001] The invention relates to a filtering system, in particular to a melting furnace waste gas filtering system. Background technique [0002] Waste gas treatment refers to the pretreatment of waste gas generated in industrial sites and factory workshops before being discharged to the outside, so as to meet the national standards for external discharge of waste gas. General waste gas treatment includes organic waste gas treatment, dust waste gas treatment, acid-base waste gas treatment, odor waste gas treatment and air sterilization, disinfection and purification. There are five major elements in waste gas treatment: First, it depends on whether it is suitable for industrial sites. Waste gas treatment should be distinguished from air purification in civil places. [0003] At present, the spray tower used in the traditional market for filtering the exhaust gas of the melting furnace only has a baffle in the tower body to allow the exhaust gas to pass throu...

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Problems solved by technology

This type of spray tower only performs simple and rough filtration of exhaust gas, and can only filter out large particles of waste residue, but cannot effectively filter out small particles of impurities in the exhaust gas. Secondly, for different types of exhaust gas, especially complex and difficult The filtered exhaust gas cannot achieve a satisfactory filtering result. At the same time, if you want to increase the distance of the exhaust gas in the spray tower and improve the spray effect, you must increase the height of the spray tower, which will inevitably increase the cost of the equipment, so do not increase the height of the spray tower Being able to fully spray is an effective means to improve the spray effect

[0004] The spray liquid containing waste slag discharged from the waste gas filtration spray tower of the melting furnace generally only uses a simple filter pool, and this type of filter pool is only used as a storage device for waste slag and spray liquid containing waste slag, and cannot protect the spray The filtration and purification functions of the liquid do not meet the environmental protection requirements of environmental protection, energy saving, and resource recycling.

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