Multiple stage pulsant ash removal equipment in bag typed dust removal for blast furnace gas, and method

A gas bag and blast furnace technology, which is applied in combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., can solve problems such as inability to reach the cleaning effect of bag cleaning, achieve quantity reduction, and ease production scale Effect of expansion and reduction of equipment footprint

Inactive Publication Date: 2005-01-12
承德新新钒钛股份有限公司
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Problems solved by technology

For such a long cloth bag, the single-hole pulse jet dust cleaning method cannot achieve the cleaning effect on the cloth bag, because the blowing force cannot reach the depth of 16 meters.

Method used

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  • Multiple stage pulsant ash removal equipment in bag typed dust removal for blast furnace gas, and method

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[0026] Using the device and method of the present invention, at 300 meters 3 On the gas bag type dust removal device of the blast furnace, 3 tests of gas bag dust removal and bag dust removal were carried out. The gas dust removal device of the blast furnace has 4 bag type dust removal boxes, and each box is equipped with 119 filter bags. The length of the bag is 16m, bag diameter Φ125mm, total area of ​​dust removal and filtration 2869.5m 2 .

[0027] Firstly, the raw gas to be dust-removed is input into the dust-removing box from the gas inlet, and the raw gas passes through the dust-removing bag at a certain flow rate. After dust-removing, the clean gas goes out from the bag mouth and enters the clean-gas conveying pipeline for output. When the working resistance reaches a certain level, it means that the adsorption layer on the periphery of the dust bag has reached a certain thickness, which affects the penetration of the gas. It is necessary to stop the dust removal proc...

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Abstract

A multisection pulse ash removing device of sack dust control for blast furnace gas consists of ash bucket, bottom box, lattice board, top box, cover sheet, media conveying pipe, multisection blowing tube, electromagnetic pulse valve and media conveying general pipe. The ash removal method includes using multisection blowing tube with their nozzles being inside sack at different depthes, applying nitrogen as ash removing media to carry out multisection ash removing for the sack simultaneously.

Description

technical field [0001] The invention belongs to the field of metallurgical blast furnaces and relates to blast furnace gas dust removal. Background technique [0002] During the production and operation of the blast furnace in ironmaking, a large amount of CO+H is continuously produced during the top-down reduction reaction process of iron ore and coke 2 +CH 4 +CO 2 Mixed gas, commonly known as blast furnace gas. This initial blast furnace gas is called raw gas, which contains a lot of dust, and the amount of dust is as high as 17-18g / m 3 , can not be used for other purposes, after dust removal, the amount of dust must be reduced to the national standard of 10-12mg / m 3 The following can be applied. [0003] In the prior art, there are two kinds of dedusting methods for blast furnace gas: one is the two-step dedusting method of gravity dedusting plus water washing dedusting, and the other is the two-step dedusting method of gravity dedusting plus bag type dedusting. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/22
Inventor 周春林高峰张振峰
Owner 承德新新钒钛股份有限公司
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