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Fireproof method of cloth dust collector

A bag dust collector and drying technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as cloth bag fire, achieve the effect of protecting cloth bags, simple process method, and preventing dust spontaneous combustion

Active Publication Date: 2013-01-23
JINLONG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preventing the bag dust collector from igniting, by adding flame retardant gas into the bag dust collector to reduce the oxygen concentration, so as to solve the problem of bag fire caused by dust

Method used

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  • Fireproof method of cloth dust collector

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Embodiment Construction

[0012] Such as figure 1 As shown, the dust-containing gas from the steam drying kiln 1 is transported to the bag filter 8 by the conveying pipeline 3, the tail gas is discharged by the fan 9, the dust is discharged from the ash hopper 12 below the bag filter, and the dust is distributed above the bag filter There is an anti-blow pipe 6. The flame retardant gas is sent into the anti-blow pipe 6 through the pipe 7 and blown into the bag 5, and at the same time, the flame retardant gas is added to the delivery pipe 3 leading to the inlet of the bag filter 8, so that the oxygen content in the bag filter is diluted to 16 %the following. Nitrogen is used as the blowback gas, and the flame retardant gas added to the delivery pipeline 3 is nitrogen and / or saturated water vapor, and the nitrogen used can be industrial waste nitrogen. Nitrogen and steam are fed through inlets 2 and 4 respectively, and can also be directly fed into drying kiln 1.

[0013] Since the air at the outlet o...

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Abstract

The invention discloses a fireproof method of a cloth dust collector, comprising the steps: using inflaming retarding gas to replace air as back flowing gas of the cloth dust collector; transporting the inflaming retarding gas into the cloth dust collector; and diluting oxygen content below 16 percent in the cloth dust collector. The fireproof method of a cloth dust collector can prevent the selfcombustion of dust by reducing the oxygen concentration in the dust, aims to protect a cloth bag and has a simple technical method; the inflaming retarding gas can adopt industrial waste nitrogen andsaturated steam, gas sources are very sufficient and are owned by general smelting enterprises, and the cost is little increased.

Description

technical field [0001] The invention relates to a method for preventing fire of a bag dust collector. Background technique [0002] When the bag filter collects flammable materials and combustible dust, the dust and the bag are prone to fire, which will cause the bag filter to burn and cause malfunctions, which seriously restricts the successful use of the bag filter. Especially in the field of non-ferrous metallurgy and other industries with similar working conditions and the collection of flammable materials and flammable dust, all kinds of bag dust collectors are prone to fire, which has caused great direct economic losses to enterprises or units. huge indirect economic losses. For example, in copper smelting, the waste gas produced by the drying of copper concentrate contains a large amount of flammable dust such as sulfur, which can easily cause spontaneous combustion when the oxygen concentration is above 16%. [0003] At present, each unit does not have a good and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/04
Inventor 宋修明于熙广赵荣升黄永峰江黎明刘安明
Owner JINLONG COPPER
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