Dust removing apparatus

A technology of dust removal device and filter chamber, which is used in gas dust removal, transportation and packaging, dispersed particle filtration, etc., and can solve the problems of easy precipitation of tar, unstable temperature, equipment failure, etc.

Pending Publication Date: 2016-12-21
新疆广汇煤炭清洁炼化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a dust removal device to solve the problem in the prior art that tar i...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The coal reacts inside the reactor to generate crude raw gas (water vapor, tar vapor, coal gas and fine coke powder) and semi-coke. The temperature of the raw gas is about 450°C. Such as figure 1 As shown, the rough gas enters the intake manifold 20 from the manifold air inlet 21 and diffuses inside the manifold to form a constant pressure. Raw coal gas enters each intake branch pipe 30 from the main intake pipe 20, and after entering the filter chamber 11, the raw coal gas diffuses rapidly, and the raw coal gas flows to the inside of the filter layer under pressure, and the dust is intercepted in the downward flow process. Inside the filter layer, raw coal gas enters into the air cavity 125 through the filter plate, and flows into the main exhaust pipe 40 through the exhaust branch pipe 50 . The temperature of the clean raw gas that exits the housing 10 and enters the exhaust main pipe 40 is ≥380°C. An online oxygen analyzer is installed on the exhaust main pipe 40. W...

Embodiment 2

[0049] The difference between Embodiment 2 and Embodiment 1 is that the blowback of the dust collector adopts constant pressure control, that is, when the pressure difference between the inlet and outlet of a certain group of filter units is greater than the set value, the corresponding blowback valve is opened to carry out split blowing.

Embodiment 3

[0051] The difference between embodiment 3 and embodiment 2 is that when the temperature of the raw gas is 500°C, the heating temperature of the blowback gas is 550°C.

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Abstract

The present invention discloses a dust removing apparatus, which comprises a housing, a gas inlet total pipe, at least a gas inlet branch pipe, a gas discharge total pipe and at least a gas discharge branch pipe, wherein at least a filtration chamber is arranged inside the housing, each filtration chamber is provided with a filtration chamber gas inlet and a filtration chamber gas discharge port, the gas inlet total pipe is provided with a total pipe gas inlet, the gas inlet total pipe is a diameter variable pipe and the diameter is gradually reduced along the direction away from the total pipe gas inlet, one end of the gas inlet branch pipe is communicated to the gas inlet total pipe, the other end is communicated to the corresponding filtration chamber gas inlet, one end of the gas discharge branch pipe is communicated to the gas discharge total pipe, and the other end is communicated to the corresponding filtration chamber gas discharge port. According to the present invention, the gas inlet total pipe is a diameter variable pipe and the diameter is gradually reduced along the direction away from the total pipe gas inlet, such that the high temperature coke-oven gas nears the constant pressure in the gas inlet total pipe and enters each filtration chamber in the constant pressure state so as to avoid the generation of the large temperature difference during the filtration to reduce the possibility of the tar precipitation.

Description

technical field [0001] The invention relates to the technical field of high-temperature gas filtration in coal chemical industry, in particular to a dust removal device. Background technique [0002] In chemical industry, petroleum, metallurgy and other industries, high temperature dusty gas is often generated. Especially in the process of coal dry distillation and upgrading, the high-temperature raw coal gas produced contains a large amount of coal dust, and the carbon-containing substances in the mixed gas, such as tar, can only exist in a gaseous state in a high-temperature environment. When the temperature is lower or the environment changes, it is easy to slowly precipitate out of the mixed gas. [0003] Traditional high-temperature raw gas purification technologies commonly used are ventilated ceramic tube (microporous ceramic and ceramic membrane) dust collectors; large bag-type back-blowing dust collectors; multi-tube cyclone dust collectors; water washing dust remo...

Claims

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Application Information

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IPC IPC(8): B01D46/00C10K1/02
CPCB01D46/0041C10K1/024B01D2273/20B01D46/56B01D46/72
Inventor 宋东升陆伟宋自力袁国庆赵创李军付陈明亮
Owner 新疆广汇煤炭清洁炼化有限责任公司
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