CN110124508A - A kind of de- dioxin dedusting Trinity catalysis filter bag of denitration - Google Patents
A kind of de- dioxin dedusting Trinity catalysis filter bag of denitration Download PDFInfo
- Publication number
- CN110124508A CN110124508A CN201810108944.9A CN201810108944A CN110124508A CN 110124508 A CN110124508 A CN 110124508A CN 201810108944 A CN201810108944 A CN 201810108944A CN 110124508 A CN110124508 A CN 110124508A
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- Prior art keywords
- filter bag
- layer
- dioxin
- denitration
- dedusting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
Abstract
The present invention provides a kind of de- dioxin dedusting Trinity catalysis filter bag of denitration, including top plate and filter bag ontology, top plate includes hollow and annular carrier and cyclic annular fixed body, the open end of filter bag ontology is fixed on hollow and annular carrier by cyclic annular fixed body, filter bag ontology includes that dedusting filtering bag and denitration take off dioxin integral type filter bag, dedusting filtering bag successively includes meeting knoisphere and the Vinyon N layer containing porous structure material from outside to inside, it successively includes the first catalyst layer and the second base cloth layer that denitration takes off dioxin integral type filter bag from outside to inside, first catalyst layer is Mn base composite transition metal oxide layer, second base cloth layer includes Vinyon N layer for substrate containing porous structure material and the PAN base hollow-fibre membrane being woven on the Vinyon N layer containing porous material, the present invention is in the Vinyon N containing porous structure material or PAN base Empty fiber membrane is catalyst carrier, loads efficient Mn base composite transition metal oxide, achievees the effect that efficient process flue gas.
Description
Technical field
The invention belongs to waste gas treatment equipment technical fields, take off dioxin dedusting three one more particularly, to a kind of denitration
Body catalysis filter bag.
Background technique
With the fast development of urban economy, energy consumption continues to increase, vehicle guaranteeding organic quantity sharp increase, city are raw
Refuse production living rapidly rises, and the state of air pollution shows apparent coal smoke and the pollution of motor-vehicle tail-gas mixed type, nitrogen oxygen
Compound (NOx) it is mainly derived from motor-vehicle tail-gas, industry and power plant emission etc., 62% NO in traffic sourcexFrom diesel oil
Tail gas discharge, NOxAs primary pollution, itself directly can generate harm to human health；Dioxin (PCDD/Fs),
Be Polychlorinated biphenyls and to dioxin (PCDDs) and Polychlorinated biphenyls Bing Misaki mutters (PCDFs) general designation, be mainly derived from waste incineration,
Metal smelt, chlorine-containing compound production and action of agricultural chemicals, wherein PCDD/Fs produced by waste incineration account for the 90% of total amount with
On, it is the major source of PCDD/Fs pollution, PCDD/Fs has high toxicity, accumulative, bioaccumulation and remote migration
Property, PCDD/Fs is because of its severe toxicity and special nature difficult to degrade, and accumulation increases increasingly in the environment, to for the survival of mankind
Atmosphere, soil and water environment generate serious pollution.
Currently, most of handled nitrogen oxides using selective catalytic reduction (SCR) denitration technology, it is being catalyzed
Agent surface, NH3N is converted under the conditions of certain temperature with NO2And H2O reaches denitration purpose, while some researches show that nitrogen oxygen
Compound removing sulfuldioxide is equally applicable to PCDD/Fs degradation, and research confirms that SCR method also can inhibit while reducing NOx content
85% PCDD/Fs is formed, but this method is used to take off NOx, de- PCDD/Fs technique need to use a large amount of transiting metal oxidations
Object, nano-metal-oxide or absorbent charcoal carrier, in actual application dust carrier easily disperse, lose, pollute environment and
The disadvantages of reclaimer operation is complicated can not be used as pencil object or form of fabric, and application range is limited, and raw material valence
Lattice are expensive, waste easily causes secondary pollution, therefore, in order to improve exhaust gas dedusting, denitration and de- dioxin efficiency, have
Necessity provides a kind of with dedusting, denitration and the Trinitarian catalysis filter bag of de- dioxin.
Summary of the invention
The present invention provides a kind of de- dioxin dedusting Trinity catalysis filter bag of denitration, to contain porous structure material
The Vinyon N or PAN base hollow-fibre membrane of material are catalyst carrier, load efficient Mn base composite transition metal oxide, make
It achievees the effect that there is the substances such as efficient catalytic decomposing nitrogen oxide, dioxin at low temperature, while can replace respectively each
Functional layer effectively improves the utilization rate of more functional layer.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of de- dioxin dedusting three one of denitration
Body catalysis filter bag, including top plate and filter bag ontology, the top plate include hollow and annular carrier and cyclic annular fixed body, described
The open end of filter bag ontology is fixed on the hollow and annular carrier by cyclic annular fixed body, and the filter bag ontology is from outside to inside
It successively include dedusting filtering bag and the de- dioxin integral type filter bag of denitration, the dedusting filtering bag successively includes meeting knoisphere from outside to inside
With the first base cloth layer, first base cloth layer is the Vinyon N layer containing porous structure material, and the denitration takes off dioxin integral type
Filter bag successively includes the first catalyst layer and the second base cloth layer from outside to inside, and first catalyst layer is the compound transition of Mn base
Metal oxide layer, second base cloth layer include Vinyon N layer for substrate containing porous structure material and are woven in institute
State the PAN base hollow-fibre membrane on the Vinyon N layer containing porous material.
Further, the dedusting filtering bag and denitration, which take off, is additionally provided with the de- dioxin of denitration between dioxin integral type filter bag
Filter bag is pre-processed, it successively includes the second catalyst layer and third base fabric that the denitration takes off dioxin pretreatment filter bag from outside to inside
Layer, second catalyst layer are Mn base composite transition metal oxide layer, and the third base cloth layer is the nitrile containing porous material
Polyvinyl chloride fibre layer.
Further, the layer windward is polytetrafluoroethylene fibre, superfine fibre and polyphenylene sulfide fibre mixing needle thorn
Felt.
Further, the porous material in the Vinyon N layer containing porous material includes active carbon, single
One or more of pipe, multi-walled carbon nanotube or galapectite.
Further, the transition metal in the Mn base composite transition metal oxide layer is copper, iron, cobalt, chromium, cerium, vanadium
Or tungsten.
Further, cavity, the inner surface and the sky of the hollow and annular carrier are equipped in the hollow and annular carrier
Fixed station is equipped between the inner surface of chamber, it is equidistant on the fixed station to be equipped with filter bag fixing groove, the filter bag fixing groove and institute
The coaxial arrangement of hollow and annular carrier is stated, the inner wall of the filter bag fixing groove is equipped with multiple card slots, the ring-type fixed body and institute
It states filter bag fixing groove to match setting, the ring-type fixed body is equipped with the elastic clamping block to match with the card slot.
Further, the side being in contact on the cyclic annular fixed body with the bottom end of the filter bag fixing groove is fixed with
Elastic packing rubber layer.
Compared with prior art, the present invention has the advantage that is with beneficial effect:
1, dedusting filtering bag of the invention is made full use of using the Vinyon N layer containing porous material as base cloth layer containing porous
Sky of the Vinyon N layer of the material size that Vinyon N therein is formed during the preparation process between several nanometers to tens microns
Hole and capillary structure have stronger adsorption efficiency, can effectively adsorb dust with more pore characteristics, meanwhile,
In conjunction with the ability of the high temperature resistant and higher removal PM2.5 of meeting knoisphere, good dedusting purpose can be reached；
2, denitration of the invention takes off dioxin integral type filter bag, utilizes braiding PAN base on the Vinyon N layer containing porous material
Mn base composite transition metal oxide is supported on base cloth layer, as base cloth layer by containing porous material by hollow-fibre membrane
The mode that Vinyon N layer and PAN base hollow-fibre membrane mix, effectively increases the contact area of base cloth layer, while in PAN base
Empty fiber membrane is prepared using TIPS method, is effectively improved the heat resistance of PAN base hollow-fibre membrane, is able to extend base cloth layer
Service life, in addition, the present invention is used as catalyst layer using the compound composite transition metal oxide of Mn base, by Mn base and
The synergistic effect of transition metal oxide can achieve the effect that good denitration takes off dioxin under low temperature.
3, the present invention is provided with top plate in the opening of filter bag, and fixed each layer is arranged in the hollow and annular carrier of top plate
The filter bag fixing groove of filter bag, and the opening of filter bag is fixed to filter bag by the cyclic annular fixed body by matching with filter bag fixing groove
In fixing groove, the corresponding filter bag fixing groove of every layer of filter bag is seriously needed replacing when function reduction occurs in any one layer of filter bag
When, directly corresponding filter bag can be replaced, avoid the case where integral type filter bag needs integral replacing waste of resource
Occur, while can be improved the utilization rate of each layer filter bag.
Detailed description of the invention
Fig. 1 is the cross section structure that a kind of denitration of the present invention takes off dioxin dedusting Trinity catalysis filter bag embodiment 1
Schematic diagram.
Fig. 2 is the cross section structure that a kind of denitration of the present invention takes off dioxin dedusting Trinity catalysis filter bag embodiment 2
Schematic diagram.
Fig. 3 is the part for inventing a kind of the second base cloth layer of de- dioxin dedusting Trinity catalysis filter bag of denitration
Structural schematic diagram.
Fig. 4 is the structural schematic diagram that a kind of denitration of the present invention takes off dioxin dedusting Trinity catalysis filter bag top plate.
In figure: 1- hollow and annular carrier；2- ring-type fixed body；3- dedusting filtering bag；4- denitration takes off the filter of dioxin integral type
Bag；5- meets knoisphere；The first base cloth layer of 6-；The first catalyst layer of 7-；The second base cloth layer of 8-；Nitrile chlorine of the 9- containing porous structure material
Synthetic fibre layer；10-PAN base hollow-fibre membrane；11- denitration takes off dioxin pretreatment layer；The second catalyst layer of 12-；13- third base fabric
Layer；14- cavity；15- fixed station；16- filter bag fixing groove；17- card slot；18- elastic clamping block；19- elastic packing rubber layer.
Specific embodiment
It elaborates with reference to the accompanying drawing to a specific embodiment of the invention.
As Figure 1-Figure 4, a kind of denitration takes off dioxin dedusting Trinity catalysis filter bag, including top plate and filter
Bag ontology, the top plate include hollow and annular carrier 1 and cyclic annular fixed body 2, and the open end of the filter bag ontology passes through cyclic annular solid
Determine body 2 to be fixed on the hollow and annular carrier 1, the filter bag ontology successively includes that dedusting filtering bag 3 and denitration are de- from outside to inside
Dioxin integral type filter bag 4, the dedusting filtering bag 3 successively include meeting knoisphere 5 and the first base cloth layer 6 from outside to inside, and described first
Base cloth layer 6 is the Vinyon N layer 9 containing porous structure material, and the denitration takes off dioxin integral type filter bag 4 and successively wraps from outside to inside
The first catalyst layer 7 and the second base cloth layer 8 are included, first catalyst layer 7 is Mn base composite transition metal oxide layer, institute
Second base cloth layer 8 is stated to include Vinyon N layer 9 for substrate containing porous structure material and be woven in described containing porous material
PAN base hollow-fibre membrane 10 on Vinyon N layer 9.
Further, the dedusting filtering bag 3 and denitration, which take off, is additionally provided with de- two evil of denitration between dioxin integral type filter bag 4
English pre-processes filter bag 11, and it successively includes 12 He of the second catalyst layer that the denitration takes off dioxin pretreatment filter bag 11 from outside to inside
Third base cloth layer 13, second catalyst layer 12 are Mn base composite transition metal oxide layer, and the third base cloth layer 13 is
Vinyon N layer 9 containing porous material.
Further, the layer windward 5 is polytetrafluoroethylene fibre, superfine fibre and polyphenylene sulfide fibre mixing needle thorn
Felt.
Further, the porous material in the Vinyon N layer 9 containing porous material includes active carbon, single
One or more of pipe, multi-walled carbon nanotube or galapectite.
Further, the transition metal in the Mn base composite transition metal oxide layer is copper, iron, cobalt, chromium, cerium, vanadium
Or tungsten.
In the present invention, the preparation method of the Vinyon N layer 9 containing porous structure material be by porous structure material (active carbon,
Single-walled carbon nanotube, multi-walled carbon nanotube or galapectite) it is mixed in a certain ratio with DMF, a small amount of dispersing agent is added, with oxidation
Zirconium bead is abrasive media, stirs 4h in the ball mill, obtains the slurries of certain density ultra-fine porous structure material, is filtered,
Filter cake solid content is calculated, particle diameter distribution is detected, reaches polymerization spinning requirement, altogether with acrylonitrile-vinylidene chloride (AN-VDC)
Aggressiveness is blended in a stirring kettle in proportion, and 8h is stirred at 80 DEG C, and deaeration kettle is squeezed into pressure filtration, at 70 DEG C after deaeration 5h,
Repressurization filtering sprays into spinning coagulation bath by spinning head through metering pump, is preheated bath water after fibre solidification molding and wash drawing-off,
The polyacrylic and polyester fiber containing porous structure material, the material containing porous structure being prepared is made through hot water drawing-off, drying, winding again
A large amount of micropores present in the polyacrylic and polyester fiber of material can promote the absorption of dust, and acid and alkaline environment is all conducive to inhale
The progress of attached process, therefore, the Vinyon N layer 9 containing porous structure material being prepared have efficient adsorption capacity.
In the present invention, PAN base hollow-fibre membrane 10 is prepared using TIPS method, by fusible acrylonitrile-methylacrylate
Copolymer and a certain amount of diluent that compounds are uniformly mixed at 140-160 DEG C, form homogeneous phase solution, homogeneous phase solution is through vacuum
The melting extrusion in conventional melt spinning machine after deaeration, forms PAN base hollow-fibre membrane as-spun fibre, in order to further mention
The porosity and mechanical property of high as-spun fibre, need to undergo following six process: (1) being heat-treated, arrange the macromolecular of order region
What is arranged is more regular, and it is more perfect to accumulate crystal structure；(2) in lower temperature (lower than the T of fiberg) under stretch so that lamella knot
Structure separates, and unformed area generates fiber crack；(3) in higher temperature (higher than the T of fiberg) under stretch, promote macromolecular
It is rearranged along drawing force direction, the micro original fibre structure with reticulated cell is presented in order region, and the fiber crack of amorphous region develops
For crack shape micropore, the degree of orientation and porosity of fiber are improved；(4) nervous thermal finalization at a certain temperature, eliminates the interior of fiber
Stress improves the stability of fiber membrane structure；(5) PAN base hollow-fibre membrane is obtained after removing diluent, using TIPS method
10 fusing point of PAN base hollow-fibre membrane of preparation is down to about 150 DEG C from 317 DEG C, heat resisting temperature from 250 DEG C improve to 350 DEG C with
On.
The preparation method of Mn base composite transition metal oxide layer is to be prepared into first using coprecipitation method in the present invention
To Mn-M-O (M=Cu, Fe, Co, Cr, Ce, V, W) composite transition metal oxide catalyst, and use infusion process and coupling method
Mn base composite transition metal oxide active constituent is supported on to Vinyon N or PAN base doughnut containing porous structure material
On membrane carrier, the carrying fiber with higher catalytic activity and application value is prepared, specific carrying method is a certain amount of to weigh
Mn base composite transition metal oxide powder, be added different content coupling agent polyvinyl alcohol or sodium carboxymethylcellulose or
Direct impregnation keeps its fully dispersed, and pretreated fiber carrier is immersed in mixed liquor, is taken out after 30min, stands, through certainly
So dry 48h, 80 DEG C of vacuum drying 2h, in addition to the oxygen delivery capacity of raising catalyst, can add in the catalyst in right amount at
Type auxiliary agent, Mn base composite transition metal oxide layer are supported on Vinyon N or PAN base hollow-fibre membrane containing porous structure material
Carrier, when the exhaust gas containing nitrogen oxides and dioxin passes through, by the synergistic effect of Mn base and transition metal oxide,
It being capable of efficient nitrogen oxide catalytic decomposition and dioxin.
Further, cavity 14, the inner surface of the hollow and annular carrier 1 and institute are equipped in the hollow and annular carrier 1
It states and is equipped with fixed station 15 between the inner surface of cavity 14, it is equidistant on the fixed station 15 to be equipped with filter bag fixing groove 16, the filter
Bag fixing groove 16 and the hollow and annular carrier 1 are coaxially disposed, and the inner wall of the filter bag fixing groove 16 is equipped with multiple card slots
17, the ring-type fixed body 2 and the filter bag fixing groove 16 match setting, the ring-type fixed body 2 equipped with and the card
The elastic clamping block 18 that slot 17 matches, the corresponding filter bag fixing groove 16 of every layer of filter bag, when function occurs in any one layer of filter bag
When reducing serious need replacing, directly corresponding filter bag can be replaced, integral type filter bag is avoided and need entirety more
The case where changing waste of resource generation, while can be improved the utilization rate of each layer filter bag.
Further, the side fixation being in contact on the cyclic annular fixed body 2 with the bottom end of the filter bag fixing groove 16 is set
Flexible sealing rubber layer 19, elastic packing rubber layer 19 can not only play good sealing function, while in replacement filter bag
When, since elastic packing rubber has certain elasticity, it can use its elasticity and press cyclic annular fixed body 2 first, due to elasticity
The elastic reaction of sealing rubber ring makes elastic clamping block 18 be detached from card slot 17, and slightly rotary annular fixed body 2, make card slot 17 with
Filter bag can be taken out and be replaced by the dislocation of elastic clamping block 18, and replacement is convenient, easy to operate, and can be reached and be individually replaced
The purpose of filter bag.
Embodiment 1
The present invention provides a kind of de- dioxin dedusting Trinity catalysis filter bag of denitration, and filter bag ontology is from outside to inside
It successively include that dedusting filtering bag and denitration take off dioxin integral type filter bag, dedusting filtering bag successively includes meeting knoisphere and the from outside to inside
One base cloth layer, meeting knoisphere is polytetrafluoroethylene fibre, superfine fibre and polyphenylene sulfide fibre mixing Nomex, the first base cloth layer
For the Vinyon N layer containing active carbon, denitration takes off dioxin integral type filter bag from outside to inside and successively includes the first catalyst layer and the
Two base cloth layers, the first catalyst layer are Mn-Cr-O composite transition metal oxide layer, and the second base cloth layer includes for substrate
Vinyon N layer containing active carbon and the PAN base hollow-fibre membrane being woven on the Vinyon N layer containing active carbon, simulate it
Fume treatment experiment, the experimental results showed that, at 120-300 DEG C, the removal efficiency of nitrogen oxides is higher than the application temperature of catalyst
95%, dioxin removal rate is higher than 95%, and efficiency of dust collection is higher than 95%.
Embodiment 2
Unlike the first embodiment, denitration is additionally provided between dedusting filtering bag and the de- dioxin integral type filter bag of denitration to take off
Dioxin pre-processes filter bag, and it successively includes the second catalyst layer and third base that denitration takes off dioxin pretreatment filter bag from outside to inside
Layer of cloth, the second catalyst layer are Mn-Co-O composite transition metal oxide layer, and third base cloth layer is containing single-walled carbon nanotube
Vinyon N layer, it is carried out simulated flue gas processing experiment, the experimental results showed that, the application temperature of catalyst at 120-300 DEG C,
The removal efficiency of nitrogen oxides is higher than 97%, and dioxin removal rate is higher than 97%, and efficiency of dust collection is higher than 97%.
One embodiment of the present invention has been described in detail above, but the content is only preferable reality of the invention
Example is applied, should not be considered as limiting the scope of the invention.It is all according to equivalent change made by the present patent application range with change
Into etc., it should still be within the scope of the patent of the present invention.
Claims (7)
1. a kind of denitration takes off dioxin dedusting Trinity catalysis filter bag, it is characterised in that: including top plate and filter bag ontology,
The top plate includes hollow and annular carrier (1) and cyclic annular fixed body (2), and the open end of the filter bag ontology passes through cyclic annular fixed body
(2) it is fixed on the hollow and annular carrier (1), the filter bag ontology successively includes dedusting filtering bag (3) and denitration from outside to inside
De- dioxin integral type filter bag (4), the dedusting filtering bag (3) successively include meeting knoisphere (5) and the first base cloth layer from outside to inside
(6), first base cloth layer (6) is the Vinyon N layer (9) containing porous structure material, and the denitration takes off dioxin integral type filter bag
It (4) from outside to inside successively include the first catalyst layer (7) and the second base cloth layer (8), first catalyst layer (7) is multiple for Mn base
Transition metal oxide layer is closed, second base cloth layer (8) includes the Vinyon N layer (9) containing porous structure material for substrate
With the PAN base hollow-fibre membrane (10) being woven on the Vinyon N layer (9) containing porous material.
2. a kind of denitration according to claim 1 takes off dioxin dedusting one catalysis filter bag, it is characterised in that: described
Dedusting filtering bag (3) and denitration, which take off, is additionally provided with de- dioxin pretreatment filter bag (11) of denitration, institute between dioxin integral type filter bag (4)
State denitration take off dioxin pretreatment filter bag (11) from outside to inside successively include the second catalyst layer (12) and third base cloth layer (13),
Second catalyst layer (12) is Mn base composite transition metal oxide layer, and the third base cloth layer (13) is containing porous material
Vinyon N layer (9).
3. a kind of denitration according to claim 1 takes off dioxin dedusting one catalysis filter bag, feature is only: institute
Stating layer (5) windward is polytetrafluoroethylene fibre, superfine fibre and polyphenylene sulfide fibre mixing Nomex.
4. a kind of denitration according to claim 2 takes off dioxin dedusting one catalysis filter bag, it is characterised in that: described
Porous material in Vinyon N layer (9) containing porous material includes active carbon, single-walled carbon nanotube, multi-walled carbon nanotube or angstrom Lip river
One or more of stone.
5. a kind of denitration according to claim 2 takes off dioxin dedusting one catalysis filter bag, it is characterised in that: described
Transition metal in Mn base composite transition metal oxide layer is copper, iron, cobalt, chromium, cerium, vanadium or tungsten.
6. a kind of denitration according to claim 1 takes off dioxin dedusting one catalysis filter bag, it is characterised in that: described
Cavity (14) are equipped in hollow and annular carrier (1), the inner surface of the hollow and annular carrier (1) and the interior table of the cavity (14)
Fixed station (15) are equipped between face, equidistant on the fixed station (15) to be equipped with filter bag fixing groove (16), the filter bag fixing groove
(16) it being coaxially disposed with the hollow and annular carrier (1), the inner wall of the filter bag fixing groove (16) is equipped with multiple card slots (17),
The ring-type fixed body (2) and the filter bag fixing groove (16) match setting, the ring-type fixed body (16) equipped with and institute
State the elastic clamping block (18) that card slot (17) matches.
7. a kind of denitration according to claim 6 takes off dioxin dedusting one catalysis filter bag, it is characterised in that: described
The side being in contact on cyclic annular fixed body (2) with the bottom end of the filter bag fixing groove (16) is fixed with elastic packing rubber layer
(19)。
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| CN111773920A (en) * | 2020-06-15 | 2020-10-16 | 中材节能股份有限公司 | Be applied to integrated dust removal catalytic unit of low temperature denitration |
| CN112044176A (en) * | 2020-09-29 | 2020-12-08 | 西安热工研究院有限公司 | NO catalytic oxidation filter bag for rapid SCR reaction and preparation method thereof |
| CN112403121A (en) * | 2020-11-21 | 2021-02-26 | 西安热工研究院有限公司 | Fused deposition modeling 3D printing dioxin removal bag cage and preparation method thereof |
| CN112481727A (en) * | 2020-12-21 | 2021-03-12 | 厦门卡德莱新材料有限公司 | Preparation method of denitration catalyst-loadable PTFE resin |
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