CN207970610U

CN207970610U - A kind of compound filter bags of PTFE with high-temperature catalytic decomposition function

Info

Publication number: CN207970610U
Application number: CN201820016452.2U
Authority: CN
Inventors: 黄斌香; 顾榴俊; 孙玲玲; 李伟松
Original assignee: Jiangsu Jinyou New Material Co Ltd
Current assignee: Jiangsu Jinyou New Material Co Ltd
Priority date: 2018-01-04
Filing date: 2018-01-04
Publication date: 2018-10-16
Anticipated expiration: 2028-01-04

Abstract

The utility model discloses a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function, including compound filter bag ontology, compound filter bag ontology is Nomex or non-woven fabrics, it is covered with bright and clean layer on the dust-collecting face of the compound filter bag ontology, PTFE short fiber layers are equipped between the dust-collecting face and bright and clean layer of compound filter bag ontology, it is compounded with high-temperature catalytic layer on the outer surface of PTFE short fiber layers, high-temperature catalytic layer is under the high temperature conditions being catalytically decomposed the toxic and harmful gas in flue dust.The utility model is not only able to the flue dust, the dust that are generated in the industrial processes such as filtering spam burning, coal fired power generation, metal smelt, additionally it is possible to directly toxic and harmful gas of the catalytic decomposition row into air.

Description

A kind of compound filter bags of PTFE with high-temperature catalytic decomposition function

Technical field

The utility model is related to high temperature air filtration arts, mainly for works such as waste incineration, coal fired power generation, metal smelts The dust and toxic and harmful gas being also easy to produce in the production of industry field more specifically to one kind there is high-temperature catalytic to decompose work( The compound filter bags of PTFE of energy.

Background technology

During " 12th Five-Year Plan ", the burning amount of China's rubbish is being continuously increased, and " 13 " point out to add in the works Big China uses the input of the processing method of waste incineration.

The problems such as domestic waste generally existing humidity in China is excessively high and unclear classification, so in Refuse Incineration Process In easily generate the toxic and harmful gas of some Ru bioxin one kind.Currently, common high-temperature-resistant filtering material in China market Mainly both for the solid dust generated in combustion process, and in these high-temperature-resistant filtering materials, and belongs to PTFE needles and pierce high temperature mistake Filter material material can be higher than 99.9% for the filter efficiency of solid dust, still, still have part toxic during the filtration process Pernicious gas is but still discharged into air.

Domestic is mainly at present using the filtering accuracy for improving sack cleaner, together to the emission control of toxic and harmful gas When reuse the mode of active carbon adsorption, the work containing toxic and harmful gas that this method seems effective, but absorbs Property carbon and flying dust all harmful dangerous waste object must be used as to carry out after-treatment, and the active carbon consumption to accumulate over a long period and poisonous and harmful danger The disposition of waste can greatly increase the running cost of the enterprises such as garbage burning factory.

Also have and composite catalytic layer is set on the surface of dedusting filtering bag, toxic and harmful gas is subjected to catalytic decomposition and to air In, composite catalyzing is there are many form, such as photocatalysis, chemistry are drawn and urged.As application No. is " the tools disclosed in 201710631855.8 Have compound filter bags of the PTFE of high-temperature catalytic decomposition function and preparation method thereof ", mainly pass through illumination and O₂Booster action under Catalytic decomposition function is carried out, it still, cannot be with illumination and O since dedusting filtering bag is all disposed on the inside of deduster₂It is direct Contact, catalytic action can not be just played using photocatalysis mode at all；And drawn using chemistry urge mode also and need it is another to dedusting filtering bag Row processing, very uneconomical practicality.

Utility model content

In view of the above defects of the prior art, the purpose of this utility model is to provide a kind of with high-temperature catalytic point The compound filter bags of PTFE for solving function, are not only able to produce in the industrial processes such as filtering spam burning, coal fired power generation, metal smelt Raw flue dust, dust, additionally it is possible in inside of bag type dust collector directly toxic and harmful gas of the row of catalytic decomposition into air.

To achieve the above object, the utility model adopts the following technical solution：

A kind of compound filter bags of PTFE with high-temperature catalytic decomposition function, including compound filter bag ontology, compound filter bag ontology For Nomex or non-woven fabrics, be covered with bright and clean layer on the dust-collecting face of the compound filter bag ontology, the dust-collecting face of compound filter bag ontology with Be equipped with PTFE short fiber layers between bright and clean layer, be compounded with high-temperature catalytic layer on PTFE short fiber layers surface, high-temperature catalytic layer to The toxic and harmful gas in flue dust is decomposed in adsoption catalysis.

The bright and clean layer is coated with PTFE lotion.

The high-temperature catalytic layer is lithium carbonate.

The high-temperature catalytic layer is compound in by composite glue on PTFE short fiber layers surface.

Catalyst is equipped in the composite glue.

Catalyst is equipped in the PTFE short fiber layers.

The catalyst is cobalt compound or lithium-containing compound.

In the above technical solution, a kind of PTFE with high-temperature catalytic decomposition function provided by the utility model is multiple Filter bag is closed, also there is following advantageous effect：

1. the utility model (filter efficiency is more than 99.9%) on the basis of meeting basic high-temperature smoke filtering, also has The function of the toxic and harmful gas generated in catalytic decomposition combustion process, in illumination and O₂Auxiliary under, catalytic effect can be substantially It is promoted, toxic and harmful gas is decomposed into CO₂、H₂O、Cl₂Equal innocuous gas are discharged into air；

2. the PTFE emulsion layer coated on the utility model outer surface improves any surface finish of this compound filter bag dust-collecting face Degree, is conducive to pulse dust cleaning in actual use, that is, improves the service life of this compound filter bag；

3. catalysis material used by the utility model, especially under conditions of temperature reaches 150~200 DEG C, and one As the working temperature that uses of filter bag also between 150-200 DEG C so that the filter bag can be played most preferably under working condition Using effect, avoid the problem of Conventional catalytic material fails at high temperature, and can be in inside of bag type dust collector directly to having Malicious pernicious gas is catalytically decomposed, and the efficiency of catalytic decomposition is improved, and manufacture craft is simple, especially to phenyl ring class, hydro carbons Removal rate can reach 97% or more.

Description of the drawings

Fig. 1 is the schematic diagram of the compound filter bag layer structure of the utility model；

Fig. 2 is the schematic diagram of the utility model PTFE fiber layer；

Fig. 3 is the schematic diagram that catalyst is added in the utility model the utility model PTFE fiber layer.

Specific implementation mode

The technical solution of the utility model is further illustrated with reference to the accompanying drawings and examples.

Shown in Fig. 1 to Fig. 3, a kind of PTFE with high-temperature catalytic decomposition function provided by the utility model is multiple Filter bag, including compound filter bag ontology 1 are closed, compound filter bag ontology 1 is Nomex or non-woven fabrics, and above-mentioned is prior art part, This is just repeated no more.Unlike the prior art, it is covered with one layer on the dust-collecting face (i.e. inner surface) of the compound filter bag ontology 1 Bright and clean layer 2, bright and clean layer 2 use PTFE emulsion, improve the surface smoothness of this compound filter bag dust-collecting face, be conducive to actually make With pulse dust cleaning in the process, that is, improve the service life of this compound filter bag, dust-collecting face and the bright and clean layer of compound filter bag ontology 1 It is additionally provided with PTFE short fiber layers 3 between 2, high-temperature catalytic layer is compounded with by high-sintering process on 3 surface of PTFE short fiber layers 4, it can be adsorbed under 150~200 DEG C of hot conditions by high-temperature catalytic layer 4 and the poisonous and harmful gas in flue dust is catalytically decomposed Body, can also direct catalysed soot.

Preferably, the high-temperature catalytic layer 4 selects lithium carbonate, the material especially at 180 DEG C or so, to phenyl ring class, The removal rate of hydro carbons can reach 97% or more

Preferably, the high-temperature catalytic layer 4 is compound in PTFE short fiber layers surface 3 by composite glue high temperature sintering On, also, catalyst can be mixed into composite glue, further improve the efficiency of high-temperature catalytic decomposition.

Preferably, can also be mixed into catalyst 5 in the PTFE short fiber layers 3, PTFE short fiber layers 3 originally have anti- Rotten, heat safe performance, chemical stability and Anti-dew can effectively improve the filtering of compound filter bag after catalyst 5 is added Precision, and improve the function of toxic and harmful gas catalytic decomposition.

Preferably, the catalyst can select the compound of class containing cobalt or the compound of class containing lithium, for removing phenyl ring Class, the poisonous and harmful substance effect of hydro carbons are preferable.

Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this practicality is new Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above Variation, the modification of embodiment will all be fallen in the Claims scope of the utility model.

Claims

1. a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function, including compound filter bag ontology, compound filter bag ontology are Nomex or non-woven fabrics, it is characterised in that：Bright and clean layer is covered on the dust-collecting face of the compound filter bag ontology, compound filter bag ontology It is equipped with PTFE short fiber layers between dust-collecting face and bright and clean layer, high-temperature catalytic layer is compounded on the outer surface of PTFE short fiber layers, it is high Warm Catalytic Layer is under the high temperature conditions being catalytically decomposed the toxic and harmful gas in flue dust.

2. a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function as described in claim 1, it is characterised in that：It is described Bright and clean layer be coated with PTFE lotion.

3. a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function as described in claim 1, it is characterised in that：It is described High-temperature catalytic layer be lithium carbonate.

4. a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function as described in claim 1, it is characterised in that：It is described High-temperature catalytic layer be compound on PTFE short fiber layers surface by composite glue.

5. a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function as claimed in claim 4, it is characterised in that：It is described Composite glue in be equipped with catalyst.

6. a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function as described in claim 1, it is characterised in that：It is described PTFE short fiber layers in be equipped with catalyst.

7. such as a kind of compound filter bags of PTFE with high-temperature catalytic decomposition function described in claim 5 or 6, it is characterised in that： The catalyst is cobalt compound or lithium-containing compound.