CN105013250B - A kind of filtering material with desulfurization effect and preparation method thereof - Google Patents
A kind of filtering material with desulfurization effect and preparation method thereof Download PDFInfo
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- CN105013250B CN105013250B CN201510381942.3A CN201510381942A CN105013250B CN 105013250 B CN105013250 B CN 105013250B CN 201510381942 A CN201510381942 A CN 201510381942A CN 105013250 B CN105013250 B CN 105013250B
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Abstract
The invention provides a kind of preparation method of the filtering material with desulfurization effect, comprise the following steps：(1) after active metal catalyst powder is mixed with PTFE resin powder, the PTFE fiber containing catalyst and the PTFE microporous membranes containing catalyst is respectively prepared；(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used 1 10:Warp beam is made in 1 10 modes being alternately arranged, and PTFE base cloth layers are made by the way of woven；(3) needing machine is put into together with PTFE base cloth layers after base material is mixed with the PTFE chopped fibers containing catalyst, PTFE compound spiked felts are made；(4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mixed treating liquid, PTFE compound spiked felts is carried out to sinter at 280 350 DEG C after mass-impregnation processing；(5) the PTFE compound spiked felts after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously, surface carries out hot pressing overlay film processing.The present invention can significantly improve filtering accuracy and desulfuration efficiency.
Description
Technical field
The present invention relates to Environmental-protecting dust-removing filed of flue gas purification, more particularly to a kind of filtering material with desulfurization effect and
Its preparation method.
Background technology
At present, with the rapid development of economy, the discharge of industrial waste gas is sharply increased.The pollution of China's atmospheric environment is increasingly
Seriously, and progressively pollute and change from coal-smoke pollution to mixed type, flue dust, SOx, NOx, Hg total emission volumn Yi Ju worlds the
One.Wherein sulfur dioxide is one of major pollutants in air, and discharge capacity exceedes the self-purification ability of enviroment, endangers huge, environment shape
Condition situation very severe.Sulfur dioxide be influence air quality topmost gaseous contaminant, be weigh air whether by
The important symbol of pollution.
The source of sulfur dioxide is mainly artificial source：By the thermal power plant of fuel of coal and oil, Industrial Boiler, rubbish
Rubbish is burned, live heating, Diesel engine, metallurgical works, paper mill etc..The atmosphere pollution that China's fire coal is brought, particularly
Sulfur dioxide pollution, causes huge economic loss, has had a strong impact on the development of national economy and the normal life of the people
It is living.
Sulfur dioxide has very strong toxicity, and huge injury can be caused to human body；Sulfur dioxide is " acid rain " simultaneously
Main reason, thus it is particularly important for the preventing and controlling of sulfur dioxide.Current flue gas desulfurization is to reduce sulfur dioxide (SO2) emissions most
Economic, effective means, flue gas desulfurization technique is most commonly used that the thing phase difference according to operating process, and sulfur method can be divided into wet
Method flue gas desulfurization, dry flue gas desulphurization and semi-dry process flue gas desulphurization.Various flue gas desulfurization techniques are in scrubbing CO_2
During achieve certain economy, society and environmental benefit, but still have several drawbacks, that is, sulfur dioxide it is de-
Except efficiency, the sulfur dioxide in flue gas has certain escape phenomenon.
Environmental benefit and economic benefit are considered the Developing mainstream as sulfur dioxide Prevention Technique from now on, investment and
Operating cost is few, desulfuration efficiency is high, pollute less, the desulfurization technology of non-secondary pollution will develop as flue gas desulfurization technique from now on
Main trend.In order to further improve the removal efficiency of sulfur dioxide, pass through R ＆ D design new type functional Environmental-protecting dust-removing mistake
Filter material material, is implanted into active catalyst in filtrate, realizes and carries out dedusting simultaneously in high-temperature flue gas, to contain in high-temperature flue gas two
The purpose that sulfur oxide is catalytically decomposed.Therefore, in original Environmental-protecting dust-removing system, without change existing process equipment and
Working condition, you can complete the catalytic decomposition of the harmful substances such as the remaining sulfur dioxide of desulphurization system.
The content of the invention
There is desulfurization work(there is provided one kind present invention aim to address subproblem present in existing desulfurization filtrate technology
Filtering material of effect and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of the filtering material with desulfurization effect, comprises the following steps：
(1) after active metal catalyst powder is mixed with PTFE resin powder, the PTFE containing catalyst is respectively prepared
Fiber and the PTFE microporous membranes containing catalyst；
(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used into 1-10:The mode system that 1-10 is alternately arranged
Into warp beam, weaved by the way of woven and PTFE base cloth layers are made；
(3) needing machine is put into together with PTFE base cloth layers after base material is mixed with the PTFE chopped fibers containing catalyst,
The both sides of PTFE base cloth layers form catalysis PTFE fiber strength layer, and PTFE compound spiked felts are made；
(4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mixed treating liquid, it is compound to PTFE
Nomex carries out mass-impregnation processing, is sintered afterwards at 280-350 DEG C；
(5) the PTFE compound spiked felts after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously
In, surface carries out hot pressing overlay film processing.
Preferably, active metal catalyst is V in the step (1)2O5/TiO2Or V2O5-WO3/TiO2。
Preferably, active metal catalyst powder, the mass ratio of PTFE resin powder are 1~10 in the step (1):99
~90.
Preferably, the base material in the step (3) is in PPS fibers, PTFE fiber, glass, P84, aramid fiber, PSA fiber
One or more.
Preferably, the mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion is in the step (4)
1-99:99-1。
Preferably, the active ingredient of the active metal catalyst emulsion is V2O5/TiO2Or V2O5-WO3/TiO2。
Preferably, the solid content of the active metal catalyst emulsion is 40~60%.
Preferably, the solid content of the PTFE emulsion is 30~50%.
The filtering material with desulfurization effect prepared according to the above method, successively including the PTFE micropores containing catalyst
Film layer, the first catalyst mixed treating liquid dipping layer, PTFE compound spiked felts, the second catalyst mixed treating liquid dipping layer；
The PTFE compound spiked felts include the first catalysis PTFE fiber strength layer, PTFE base cloth layers, the second catalysis being sequentially connected
PTFE fiber strength layer；Between PTFE microporous film layers containing catalyst and the first catalyst mixed treating liquid the dipping layer
Pass through hot pressing cladding.
Beneficial effects of the present invention：
(1) filtering material with desulfurization effect of the invention has applicable working condition scope wide, without changing original work
Skill equipment and working condition, you can complete the catalytic decomposition of the harmful substances such as remaining sulfur dioxide；System operation safety and steady is low
The notable features such as efficient and long life are hindered, energy resource consumption and operation and maintenance cost lower 30%；
(2) filtering material with desulfurization effect of the invention has effects that surface filtration simultaneously, and dust is trapped in
The surface of filtrate, it is possible to achieve Dust Capacity is less than 5mg/Nm3Near-zero release；
(3) filtering material with desulfurization effect of the invention is while filtrating smoke dust, due to multi-level catalyst
The introducing of distribution layer, lifts the contact area of waste gas and catalyst, greatly improves and the harmful substances such as sulfur dioxide are urged at double
Change decomposition efficiency；Give full play to the function that filtrate removes harmful substance；
(4) base material is made with catalysis PTFE fiber using superfine glass fiber, it is ensured that filtrate integrally has higher tensile strength,
There is the catalytic decomposition function of the harmful substances such as sulfur dioxide simultaneously；
(5) the filtering material heat resistance with desulfurization effect of the invention is outstanding, can continuous 200 DEG C of operating temperature,
Moment heatproof is up to 220 DEG C.
Brief description of the drawings
Fig. 1 is the structural representation of filtrate of the present invention.
Embodiment
In order to which the present invention is better described, with reference to the accompanying drawing in the embodiment of the present invention, in the embodiment of the present invention
Technical scheme is clearly and completely described.
A kind of preparation method of the filtering material with desulfurization effect, comprises the following steps：(1) by active metal catalyst
After powder is mixed with PTFE resin powder, the PTFE fiber containing catalyst is respectively prepared and the PTFE micropores containing catalyst are thin
Film；(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used into 1-10:The mode that 1-10 is alternately arranged be made through
Axle, is weaved by the way of woven and PTFE base cloth layers is made；(3) after base material is mixed with the PTFE chopped fibers containing catalyst with
PTFE base cloth layers are put into needing machine together, and catalysis PTFE fiber strength layer is formed in the both sides of PTFE base cloth layers, and PTFE is made and answers
Close Nomex；(4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mixed treating liquid, it is compound to PTFE
Nomex carries out mass-impregnation processing, is sintered afterwards at 280-350 DEG C；(5) by the PTFE compound spiked felts after sintering with
PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously, and surface carries out hot pressing overlay film processing.In the step (1)
Active metal catalyst is V2O5/TiO2Or V2O5-WO3/TiO2.Active metal catalyst powder, PTFE trees in the step (1)
The mass ratio at cosmetics end is 1~10:99~90.Base material in the step (3) be selected from PPS fibers, PTFE fiber, glass,
One or more in P84, aramid fiber, PSA fiber.Active metal catalyst emulsion and PTFE emulsion is effective in the step (4)
The mass ratio of composition is 1-99:99-1.The active ingredient of the active metal catalyst emulsion is V2O5/TiO2Or V2O5-WO3/
TiO2.The solid content of the active metal catalyst emulsion is 40~60%.The solid content of the PTFE emulsion is 30~50%.
The filtering material with desulfurization effect prepared according to the above method, successively including the PTFE micropores containing catalyst
Film layer, the first catalyst mixed treating liquid dipping layer, PTFE compound spiked felts, the second catalyst mixed treating liquid dipping layer；
The PTFE compound spiked felts include the first catalysis PTFE fiber strength layer, PTFE base cloth layers, the second catalysis being sequentially connected
PTFE fiber strength layer；Between PTFE microporous film layers containing catalyst and the first catalyst mixed treating liquid the dipping layer
Pass through hot pressing cladding.
Embodiment 1
By active catalyst V2O5/TiO2Micro mist presses 5 with PTFE resin:Mixing for 95 ratio uniform, makes respectively
PTFE microporous membranes into the PTFE fiber containing catalyst and containing catalyst；Wherein, the species and quality of auxiliary agent can roots
According to any selection of needs.PTFE fiber containing catalyst is mainly used in making Woven filter cloth, and the PTFE containing catalyst is micro-
The final laminating surface in filtrate of hole film.By way of being implanted into active catalyst in filtrate, reach in filtering smoke
Effect of the harmful substances such as sulfur dioxide in flue gas is removed simultaneously.Comprise the following steps that：
One is by the PTFE fiber containing catalyst and warping process of the high-strength PTFE fiber before weaving cotton cloth, using 1:1 hands over
Warp beam is made for the mode of arrangement, PTFE base fabrics are weaved into by the way of woven, PTFE base cloth layers 4 are obtained；
Two be by 50 by PPS fibers and the PTFE chopped fibers containing catalyst:After 50 ratio mixing, with PTFE base cloth layers
Together enter needing machine, first is formed in the both sides of PTFE base cloth layers and is catalyzed the catalysis PTFE fibres of PTFE fiber strength layer 3 and second
Strength layer 5 is tieed up, PTFE compound spiked felts are made.
Three be active metal catalyst emulsion and the solid content that solid content is 45% be 45% PTFE emulsion by effectively into
The mass ratio divided is 40:60 are made catalyst mixed treating liquid, and mass-impregnation processing is carried out to PTFE compound spiked felts, pass through
After 280 DEG C of high temperature sinterings, in upper and lower surface the first catalyst mixed treating liquid of formation dipping layer 2 of PTFE compound spiked felts and the
Two catalyst mixed treating liquids impregnate layer 6.
Four be while being introduced into hot laminating machine, table after filtrate mass-impregnation is handled with the PTFE microporous membranes containing catalyst
Face carries out hot pressing overlay film processing, the PTFE microporous membranes containing catalyst is firmly combined together with base material, formation contains
The PTFE microporous film layers 1 of catalyst, are finally made PPS composite felt function filter materials.
Filtering material with desulfurization effect is integrally divided into six levels：It is followed successively by by dust-collecting face to net gas face containing catalysis
The PTFE microporous film layers of agent, the first catalyst mixed emulsion impregnation process layer, the first catalysis PTFE fiber strength layer, PTFE bases
Layer of cloth, the second catalysis PTFE fiber strength layer, the second catalyst mixed emulsion impregnation process layer.
Filtering material with desulfurization effect, significantly improves the filtering accuracy of filtrate, (dust-collecting face is to only from outside to inside for filtrate
Gas face) multi-level active catalyst distribution layer is formed, when high-temperature flue gas passes through, dust is blocked on the surface of filtrate；Contain
Have the gas of harmful substance by when, the harmful substance such as sulfur dioxide reacts with active catalyst, and oxious component is decomposed
It is collected in the lump for harmless material and dust, so as to realize the double effects of flue gas ash removal and removing harmful substance.
The parameter of filtering material with desulfurization effect
Embodiment 2
By active catalyst V2O5-WO3/TiO2Micro mist presses 8 with PTFE resin:Mixing for 92 ratio uniform, divides
The PTFE fiber containing catalyst and the PTFE microporous membranes containing catalyst are not made；Wherein, the species and quality of auxiliary agent can
With any selection as needed.PTFE fiber containing catalyst is mainly used in making Woven filter cloth, contains catalyst
The final laminating surface in filtrate of PTFE microporous membranes.By way of being implanted into active catalyst in filtrate, reach in filtering
Effect of the harmful substances such as sulfur dioxide in flue gas is removed while flue dust.Comprise the following steps that：
One is by the PTFE fiber containing catalyst and warping process of the high-strength PTFE fiber before weaving cotton cloth, using 1:1 hands over
Warp beam is made for the mode of arrangement, PTFE base fabrics are weaved into by the way of woven, PTFE base cloth layers 4 are obtained；
Two be by 30 by aramid fiber, P84 with the PTFE chopped fibers containing catalyst:After 70 ratio mixing, with PTFE base fabrics
Layer together enters needing machine, and first is formed in the both sides of PTFE base cloth layers and is catalyzed the catalysis PTFE of PTFE fiber strength layer 3 and second
Fibre strength layer 5, is made PTFE compound spiked felts.
Three be active metal catalyst emulsion and the solid content that solid content is 50% be 40% PTFE emulsion by effectively into
The mass ratio divided is 60:40 are made catalyst mixed treating liquid, and mass-impregnation processing is carried out to PTFE compound spiked felts, pass through
After 310 DEG C of high temperature sinterings, in upper and lower surface the first catalyst mixed treating liquid of formation dipping layer 2 of PTFE compound spiked felts and the
Two catalyst mixed treating liquids impregnate layer 6.
Four be while being introduced into hot laminating machine, table after filtrate mass-impregnation is handled with the PTFE microporous membranes containing catalyst
Face carries out hot pressing overlay film processing, the PTFE microporous membranes containing catalyst is firmly combined together with base material, formation contains
The PTFE microporous film layers 1 of catalyst, are finally made PTFE, aramid fiber, P84 composite felt function filter materials.
Filtering material with desulfurization effect is integrally divided into six levels：It is followed successively by by dust-collecting face to net gas face containing catalysis
The PTFE microporous film layers of agent, the first catalyst mixed emulsion impregnation process layer, the first catalysis PTFE fiber strength layer, PTFE bases
Layer of cloth, the second catalysis PTFE fiber strength layer, the second catalyst mixed emulsion impregnation process layer.
Filtering material with desulfurization effect, significantly improves the filtering accuracy of filtrate, (dust-collecting face is to only from outside to inside for filtrate
Gas face) multi-level active catalyst distribution layer is formed, when high-temperature flue gas passes through, dust is blocked on the surface of filtrate；Contain
Have the gas of harmful substance by when, the harmful substance such as sulfur dioxide reacts with active catalyst, and oxious component is decomposed
It is collected in the lump for harmless material and dust, so as to realize the double effects of flue gas ash removal and removing harmful substance.
Filtering material with desulfurization effect
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claims
Scope is defined.
Claims (2)
1. a kind of preparation method of the filtering material with desulfurization effect, it is characterised in that comprise the following steps：
(1) after active metal catalyst powder is mixed with PTFE resin powder, the PTFE fiber containing catalyst is respectively prepared
With the PTFE microporous membranes containing catalyst；
(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used into 1-10:The mode that 1-10 is alternately arranged be made through
Axle, is weaved by the way of woven and PTFE base cloth layers is made；
(3) needing machine is put into together with PTFE base cloth layers after base material is mixed with the PTFE chopped fibers containing catalyst, in PTFE
The both sides of base cloth layer form catalysis PTFE fiber strength layer, and PTFE compound spiked felts are made；
(4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mixed treating liquid, to PTFE composite acupunctures
Felt carries out mass-impregnation processing, is sintered afterwards at 280 DEG C；
(5) the PTFE compound spiked felts after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously,
Surface carries out hot pressing overlay film processing；
Active metal catalyst in the step (1) is V2O5/TiO2；The active ingredient of the active metal catalyst emulsion
For V2O5/TiO2Or V2O5-WO3/TiO2；Active metal catalyst powder, the quality of PTFE resin powder in the step (1)
Than for 5:95；The one kind of base material in PPS fibers, PTFE fiber, glass, P84, aramid fiber, PSA fiber in the step (3)
Or it is a variety of；The mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion in the step (4) is 40:60；
The solid content of active metal catalyst emulsion is 45% in the step (4)；The solid content of PTFE emulsion is in the step (4)
45%.
2. the filtering material with desulfurization effect prepared according to the method described in claim 1, it is characterised in that include successively
PTFE microporous film layers containing catalyst, the first catalyst mixed treating liquid dipping layer, PTFE compound spiked felts, the second catalysis
Agent mixed treating liquid impregnates layer；The first catalysis PTFE fiber strength layer that the PTFE compound spiked felts include being sequentially connected,
PTFE base cloth layers, the second catalysis PTFE fiber strength layer；The PTFE microporous film layers and the first catalyst containing catalyst
Pass through hot pressing cladding between mixed treating liquid dipping layer.
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| CN113786676B (en) * | 2021-10-09 | 2023-10-31 | 安徽元琛环保科技股份有限公司 | Dust-removing dioxin-removing difunctional metal filter material and preparation method thereof |
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| CN101081356A (en) * | 2007-07-10 | 2007-12-05 | 浙江理工大学 | Method for preparation of polytetrafluorethylene microporous film for the processing of high-temperature fume and flour dust |
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| CN101496974B (en) * | 2009-01-12 | 2010-12-08 | 浙江理工大学 | Preparation method of dual-purpose filter material for dedusting and decomposing dioxins |
| JP5595705B2 (en) * | 2009-09-30 | 2014-09-24 | オイレス工業株式会社 | Sliding face material and multilayer sliding member provided with the sliding face material |
| CN102393023A (en) * | 2011-10-20 | 2012-03-28 | 南京龙源环保有限公司 | Exhaust gas dedusting, denitration and desulfuration method for thermal power plant |
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| CN101081356A (en) * | 2007-07-10 | 2007-12-05 | 浙江理工大学 | Method for preparation of polytetrafluorethylene microporous film for the processing of high-temperature fume and flour dust |
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