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Gas filter

A gas filter and filter material technology, applied in the fields of dispersed particle filtration, chemical instruments and methods, dispersed particle separation, etc., can solve the problems affecting the filter effect filter service life, unreasonable gas flow direction, higher filter core requirements, etc., to achieve flexibility The effect of increasing the gas flow, reasonable gas flow, and good filtration effect

Inactive Publication Date: 2011-04-20
TIANJIN BAISHUNFENG METAL PRODS FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, after the gas enters the filter element, the flow direction is unreasonable, and the filtering effect is not good. In addition, the material and combination method of the filter element will also affect the filtering effect and the service life of the filter element, especially when it is necessary to filter acidic and corrosive gases. The requirements of the filter element are higher, and the existing filter element cannot meet the demand

Method used

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Embodiment 1

[0034] The invention relates to a gas filter, comprising a support frame and a filter component.

[0035] Referring to the accompanying drawings, the support frame is a cylindrical frame structure, including:

[0036] Several supporting rings 1 distributed in parallel, five supporting rings in the figure;

[0037] Several support bars 2 arranged axially and connected to the inner wall of the support ring 1, six support bars in this embodiment;

[0038] A connecting cylinder 4 with an outer flange 6 located at the inlet end 3, and the end of the support bar 2 at the inlet end 3 is fixedly connected with the connecting cylinder 4;

[0039] A blind plate 5 located at the end opposite to the inlet end 3 .

[0040] The axial length and radial dimension of the support frame are not strictly limited, and can be determined according to the gas pipeline conditions. The support frame is made of polyvinyl chloride.

[0041] The filter component is a filter material layer 8 distributed...

Embodiment 2

[0052] The filter support frame in this embodiment is made of polyvinyl chloride, and the glass fiber is directly used as a glass fiber mat wrapped in a glass fiber bag. Before use, the glass fiber mat is immersed in a mixed solution of xylene and silicone oil, and soaked at room temperature for 100 minutes. Then take it out and dry it. In the mixed solution of xylene and silicone oil, the mass percent content of xylene is 80%, and the remaining part adopts the same structure as the filter in Example 1.

[0053] Used in the chlorine pipeline, the flow rate is 1300NM 3 / h, under the condition of 24 hours non-stop, the service life reaches 8 months, and the weight ratio of water in chlorine gas after filtration is less than 0.05%.

Embodiment 3

[0055] The filter support frame in this embodiment is made of stainless steel (316L), and the glass fiber is directly used as a glass fiber mat. Before use, the glass fiber mat is immersed in a mixed solution of xylene and silicone oil, and after soaking at room temperature for 120 minutes, it will be taken out and air-dried. Dry, in the mixed solution of xylene and silicone oil, the mass percent content of xylene is 90%, and the rest adopts the same structure as the filter in Example 1.

[0056]Used in the hydrogen pipeline, the flow rate is 1400NM 3 / h, under the condition of 24 hours without interruption, the service life reaches 8 months, and the weight ratio of water in the filtered hydrogen is less than 0.05%.

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Abstract

The invention discloses a gas filter. The gas filter comprises a supporting frame and a filtering part, wherein the supporting frame has a cylindrical frame structure; the filtering part is a filtering material layer distributed around the outer wall of the cylindrical frame structure; in the two ends which are positioned on the axis of the supporting frame, one end is an inlet end and the other end is provided with a blind plate; a gap is reserved between the outer wall of the filtering material layer and the inner wall of a gas pipeline; gas which needs to be filtered enters the supporting frame from the inlet end, flows through the filtering material layer, enters the gap between the outer wall of the filtering material layer and the inner wall of the gas pipeline, and then is output through the gas pipeline; the filtering material layer comprises glass fibers subjected to pretreatment; and the pretreatment comprises the steps of: soaking the glass fibers into mixed solution of dimethylbenzene and silicone oil for 20 to 240 minutes and taking the glass fibers out and drying in the air. The gas filter has the advantages that: the flow direction of the gas in the filter is reasonable; and after the glass fibers with the main filtering effect are modified through the pretreatment, the flexibility of the modified glass fibers is improved, and the filtering effect is good.

Description

technical field [0001] The invention relates to a gas filtering device for removing solid impurities or water mist in gas. Background technique [0002] Filters are often used in gas pipelines, especially in pipelines that input gas into storage tanks, to filter out solid impurities or water mist in the gas. [0003] Existing filters generally include a casing and a filter element inside the casing, and the gas is filtered and purified when passing through the filter element. The air inlet and the gas outlet of the shell are respectively connected with the gas pipeline, that is, the filter is used as a part of the gas pipeline, or the filter can be placed in the gas pipeline, and the shell is sealed with the inner wall of the gas pipeline to prevent gas Through the gap between the shell and the gas pipeline, only the gas is allowed to pass through the filter element. [0004] However, in the prior art, after the gas enters the filter element, the flow direction is unreason...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/24
Inventor 李志文
Owner TIANJIN BAISHUNFENG METAL PRODS FACTORY
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