CN110052163A - A kind of new type water stall denitration dust collecting device - Google Patents
A kind of new type water stall denitration dust collecting device Download PDFInfo
- Publication number
- CN110052163A CN110052163A CN201910435368.3A CN201910435368A CN110052163A CN 110052163 A CN110052163 A CN 110052163A CN 201910435368 A CN201910435368 A CN 201910435368A CN 110052163 A CN110052163 A CN 110052163A
- Authority
- CN
- China
- Prior art keywords
- ceramic
- dust collecting
- collecting device
- air
- denitration dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
-
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention provides a kind of new type water stall denitration dust collecting device, including smoke inlet and exhanst gas outlet, the smoke inlet is connected with inlet air stack, being circular layout on the inlet air stack has double-current spray gun body, be equipped in the denitration dust collecting device shell is in 30~60 ° of air baffles being obliquely installed, the air baffle is equipped with multiple groups end seal and closes ceramic-film tube, the end seal closes two sides above ceramic-film tube and is respectively equipped with compressed air shock wave soot blower and acoustic wave ash ejector, and the housing bottom is located at the air baffle and is respectively arranged on the left side and the right side the first ash bucket and the second ash bucket.New type water stall denitration dust collecting device provided by the invention, can greatly improve denitration dust collecting efficiency, realize the effect of denitration, dedusting simultaneously in set of device, not only greatly reduce occupied area, and repairing convenient for safeguarding.
Description
Technical field
The present invention relates to environmental protection technical field more particularly to a kind of new type water stall denitration dust collecting devices.
Background technique
In industrial production, exhaust gas will necessarily be generated, be just discharged into air will certainly be right if these exhaust gas are without processing
Environment impacts.Wherein gaseous state exhaust gas is that most species are also that harmfulness is maximum in industrial waste gas.Gaseousness is useless at present
Gas mainly has nitrogenous organic exhaust gas, sulphur-containing exhaust gas and hydrocarbon organic exhaust gas.
(1) nitrogenous exhaust gas.Such exhaust gas can damage constituent of air, change gas composition.Especially petroleum
The burning of product, the quantity combusted of oil product is huge in the industrial production, and amount of nitrides is big in oil product, therefore exhaust gas
It is middle to contain a large amount of nitrogen oxides, it will increase air amount of nitrogen oxides if being discharged into air, atmospheric air circulation impacted.
(2) sulphur-containing exhaust gas.Sulphur-containing exhaust gas can cause people's lives environment directly to endanger, this is because it is the same as in air
Water combine and be capable of forming acidic materials, cause acid rain.And acid rain can damage plant, building and human health, especially
Its respiratory tract that will affect people.In addition soil and water source can also be impacted, causes secondary pollution.
Therefore, China should be directed to atmosphere polluting problem, continue to increase and take corresponding measure, develop advanced air pollution and control
Reason technology promulgates Pollutant Discharge Permit System, is aided with the support of financial fund, alleviates atmosphere polluting problem.Desulfurization in flue gas at present,
Denitration and dedusting technology are in research and Industrial demonstration stage mostly, and existing denitration, structure is complicated mostly for dust-extraction unit,
It takes up a large area and denitration, efficiency of dust collection is low.
Summary of the invention
The present invention in view of the deficiencies of the prior art, provides a kind of new type water stall denitration dust collecting device.
The technical solution adopted by the present invention is that: a kind of new type water stall denitration dust collecting device, including shell, the shell
Left and right ends are respectively arranged with smoke inlet and exhanst gas outlet, and the smoke inlet is connected with inlet air stack, the inlet air stack
On be circular layout and have double-current spray gun body, being equipped in the denitration dust collecting device shell is in 30~60 ° of air baffles being obliquely installed, institute
It states air baffle and the enclosure interior space is divided into two parts, described higher one end of air baffle is located at the flue gas and goes out
Above mouthful, the air baffle is equipped with multiple groups end seal and closes ceramic-film tube, and the end seal closes ceramic-film tube nozzle towards the cigarette
Gas outlet, the end seal closes two sides above ceramic-film tube and is respectively equipped with compressed air shock wave soot blower and acoustic wave ash ejector, described
Housing bottom is located at the air baffle and is respectively arranged on the left side and the right side the first ash bucket and the second ash bucket.
Preferably, the end seal closes ceramic-film tube and includes ceramic catalytic supporter, is wrapped in ceramic catalytic supporter appearance
The air hole in 5~30 microns of aperture is distributed in the ceramic membrane in face, the ceramic membrane, and the ceramic support catalytic body thickness direction is equal
The even out of stock catalysis hole of taper that 0.5~1 millimeter of aperture is distributed with, described out of stock catalysis hole one end of taper are located at ceramic support catalysis
Internal side, the out of stock catalysis hole other end of taper are close to the ceramic membrane, and ceramic membrane is close in the out of stock catalysis hole of taper
One end aperture is smaller.
It is obtained it is further preferred that the end seal closes ceramic-film tube by following steps:
1) pug is kneaded: attapulgite is placed in the HCl solution of 6~7mol/L, 8 hours are stirred at 80 DEG C, washed,
After drying process, it is ground to 400 mesh.20~30 parts of 20~30 parts of attapulgite, anatase titanium dioxide, the γ that will be modified
2~3 parts of~aluminium oxide, 3~5 parts of silica, 1.0~1.5 parts of tungstic acid dry-mixed uniform, 2~3 parts of cerous nitrate of additions, partially
2~3 parts of ammonium vanadate, 3~6 parts of 50% manganese nitrate solution of volume ratio, deionized water is prepared into slurry, by prepared ammonium metavanadate
Solution, cerous nitrate solution are added in above-mentioned slurry and stir evenly, and above-mentioned slurry is evaporated under reduced pressure using Rotary Evaporators and removes moisture.
The complete material of drying is calcined under 500 DEG C of high temperature, Activation Activity is ground to 400 mesh, obtains catalyst powder；By 50~
80 parts of catalyst powders, 2~3 parts of calcium oxide, 2~3 parts of magnesia, 0.2~0.3 part of polycarboxylate water-reducer, carboxymethyl cellulose 3
~7 parts, 1~2 part of 2~3 parts of stearic acid, polyethylene glycol oxide mixing be placed in blender, add water and a small amount of 5% ammonium hydroxide, stir one section
Time is prepared into plasticity pug；
2) aging: the pug after being kneaded kneading is put into vacuum pugmill and just refines, and controls and just refines vacuum degree in 0.08~0.1Mpa model
In enclosing, fine and close adobe is made, is placed in aging 24~36h under environment temperature；
3) molding squeezes out: by aging good pug descaling extrusion press extruding sheet blank, control extrusion pressure in 5~7MPa,
Obtain molding wet body catalyst；
4) prepared by ceramic catalytic support: blank being put into pressing on PVC plate and forms cladding, needle plate is pressed on cladding, needle
The needle of 0.5~1mm diameter on plate pierces through cladding to form bellmouth, removes needle plate and allows by polyurethane resin brush on cladding
Polyurethane resin is dried after filling up bellmouth, and polyurethane hardening of resin guarantor's type in bellmouth is covered on U after then cutting cladding
On pattern, cladding is arranged, continues to paint polyurethane resin, by ceramic makings means, the repairing type to skin such as mediating, subsidizing, trim
Material becomes U-shaped ceramic catalytic device blank, then by the wet body catalyst of forming in 100~120 DEG C of dryings, after drying
Catalyst is cut with cutting machine, obtains the ceramic catalytic support semi-finished product of required length；
5) 40~50 parts of aluminium oxide, 40~50 parts of kaolin, the poly dimethyls of 10~20 microns of average partial size ceramic film preparation: are taken
1~2 part of siloxanes, 1~2 part of ammonium dihydrogen phosphate, 1~2 part of flyash, 1~2 part of carboxymethyl cellulose, 1~2 part of ammonium hydrogen carbonate,
5~10 parts of silica solution, 3~10 parts of titanate coupling agent be mixed evenly, then take mixture in 70~95 DEG C and volume ratio
The mixing of 1.5~2.5% oxalic acid aqueous solutions, slurries ratio 1:3 add and are warming up to 80 DEG C, are made within 1~2 hour with ultrasonic oscillation stirring mixed
It closes slurry blank is fitted into shuttle kiln and is burnt by ceramic membrane slurry brush on ceramic catalytic support blank, calcination process
In, polyurethane resin in bellmouth is burnt up, firing temperature is controlled at 680~750 DEG C, firing time about 5h, final after clearing up
It obtains end seal and closes ceramic-film tube.
Preferably, the compressed air shock wave soot blower input terminal is connected with air compressor machine.
It is further preferred that coil exchanger is equipped between the compressed air shock wave soot blower and the air compressor machine,
The coil exchanger entrance is connected with the air compressor machine, the heat exchanger exit and the compressed air shock wave soot blower phase
Even, the coil exchanger is arranged in the shell close to the smoke inlet or the smoke outlet.
Preferably, it is U-shaped that the end seal, which closes the longitudinal section of ceramic-film tube,.
The beneficial effects of the present invention are: new type water stall denitration dust collecting device provided by the invention, not only denitration efficiency is steady
Fixed, high mechanical strength, wear-resisting property is strong, and filter effect is good, can be to filter while out of stock, ultrahigh in efficiency.And the present invention
The effect of denitration, dedusting is realized simultaneously in set of device, not only greatly reduces occupied area, but also convenient for safeguarding is repaired
Reason.Utmostly safeguards system stable operation is used using two kinds of soot blower efficient couplings, while being made using fume afterheat temperature
For compressed air heat source, the operating temperature of catalyst is not influenced not only, can also keep catalyst relative clean, denitration efficiency for a long time
Stability and high efficiency.
Detailed description of the invention
Fig. 1 is new type water stall denitration dust collecting apparatus structure schematic diagram；
Fig. 2 is that end seal closes ceramic-film tube structural schematic diagram；
Fig. 3 is Fig. 2 partial enlarged view；
Fig. 4 is the structural schematic diagram of needle plate.
In figure: 1, smoke inlet；2, exhanst gas outlet；3, end seal closes ceramic-film tube；4, air baffle；5, compressed air shock wave
Soot blower；6, acoustic wave ash ejector；7, coil exchanger；8, air compressor machine；9, the first ash bucket；10, the second ash bucket；11, shell；
12, inlet air stack；121, double-current spray gun body；31, ceramic catalytic supporter；32, catalytic body ceramic membrane；33, the out of stock catalysis of taper
Hole；34, gas outlet.
Specific embodiment
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
A kind of new type water stall denitration dust collecting device as shown in Figure 1, including shell 11, the left and right ends point of the shell 11
It is not provided with smoke inlet 1 and exhanst gas outlet 2, the smoke inlet is connected with inlet air stack 12, annular on the inlet air stack
It is disposed with double-current spray gun body 121, double-current spray gun body 121 will uniformly spray into flue gas after reducing agent ammonia atomization, by flue gas temperature
Degree is evaporated to ammonia, and being equipped at the exhanst gas outlet 2 is in 30~60 ° of air baffles 4 being obliquely installed, the air baffle
11 inner space of shell is divided into two parts by 4, and the higher one end of the air baffle 4 is located on the exhanst gas outlet 2
Side, the air baffle 4 are equipped with multiple groups end seal and close ceramic-film tube 3, and the end seal closes 3 gas outlet 34 of ceramic-film tube towards described
Exhanst gas outlet 2, the end seal close 3 top two sides of ceramic-film tube and are respectively equipped with compressed air shock wave soot blower 5 and acoustic wave ash ejector
6,11 bottom of shell is located at the air baffle 4 and is respectively arranged on the left side and the right side the first ash bucket 9 and the second ash bucket 10.The end
The longitudinal section for closing ceramic-film tube 3 is U-shaped, therefore closes ceramic-film tube 3 for end seal.
It includes ceramic catalytic supporter 31, the catalysis for being wrapped in ceramic catalytic support external surface that end seal, which closes ceramic-film tube 3,
The air hole 320 in 5~30 microns of aperture is distributed in body ceramic membrane 32,32 surface of ceramic membrane, and ceramic support is catalyzed body thickness
Direction is evenly distributed with the out of stock catalysis hole 33 of taper in 0.5~1 millimeter of aperture, and described out of stock 33 one end of catalysis hole of taper is located at institute
31 inside of ceramic catalytic supporter is stated, out of stock 33 other end of catalysis hole of taper is close to the catalytic body ceramic membrane 32, described
One end aperture that catalytic body ceramic membrane 32 is close in the out of stock catalysis hole 33 of taper is smaller.
Air baffle 4 is inclined in shell 11, enables denitration dust collecting device horizontally disposed, and it is logical can to greatly reduce system
Atmidometer, the out of stock catalysis pore structure of the taper of ceramic catalytic supporter 31 are convenient to clean dust.First ash bucket 9 accumulation on the left of partition
Leaching is crossed, dust stratification can be often removed, the second ash bucket 10 is a small amount of ash of cleaning, and ash quantity is limited, periodic cleaning.
The end seal is closed ceramic-film tube 3 and is prepared by following embodiment:
Embodiment 1:
1) pug is kneaded: attapulgite being placed in the HCl solution of 7mol/L, 8 hours are stirred at 80 DEG C, washed, dried
After technique, it is ground to 400 mesh.By 2 parts of 28 parts of 22 parts of attapulgite, anatase titanium dioxide, γ~aluminium oxide being modified,
4 parts of silica, 1 part of tungstic acid dry-mixed uniform, 2 parts of cerous nitrate of addition, 2 parts of ammonium metavanadate, 50% manganese nitrate solution of volume ratio
3 parts, deionized water is prepared into slurry, and prepared ammonium metavanadate solution, cerous nitrate solution are added in above-mentioned slurry and stirred evenly,
Above-mentioned slurry is evaporated under reduced pressure using Rotary Evaporators and removes moisture.The complete material of drying is calcined under 500 DEG C of high temperature, is swashed
It is activity, 400 mesh are ground to, catalyst powder is obtained；By 50 parts of catalyst powders, 2 parts of calcium oxide, 2 parts of magnesia, polycarboxylic acids
1 part of 0.2 part of water-reducing agent, 3 parts of carboxymethyl cellulose, 2 parts of stearic acid, polyethylene glycol oxide mixing are placed in blender, Jia Shui and few
5% ammonium hydroxide is measured, stirring a period of time is prepared into plasticity pug；
2) aging: the pug after being kneaded kneading is put into vacuum pugmill and just refines, and controls and just refines vacuum degree in 0.08~0.1Mpa model
In enclosing, fine and close adobe is made, be placed under environment temperature it is aging for 24 hours；
3) molding squeezes out: by aging good pug descaling extrusion press extruding sheet blank, controlling extrusion pressure in 5MPa, obtains
Molding wet body catalyst；
4) prepared by ceramic catalytic supporter: blank being put into pressing on PVC plate and forms cladding, by the needle plate pressure of such as Fig. 4 shape
On cladding, the needle of 0.5~1mm diameter on needle plate pierces through cladding to form bellmouth, needle plate is removed, by polyurethane resin brush
It on cladding, is dried after allowing polyurethane resin to fill up bellmouth, polyurethane hardening of resin guarantor's type, then cuts out cladding in bellmouth
It is covered on after cutting on U-shaped mould, arranges cladding, continue to paint polyurethane resin, by the ceramic makings hand such as mediating, subsidizing, trim
Section, repairing type to cladding become end seal and close ceramic catalytic body blank, then that the wet body catalyst of forming is dry in 100~120 DEG C
Dry, catalyst after drying is cut with cutting machine, obtains the ceramic catalytic supporter semi-finished product of required length；
5) 40 parts of aluminium oxide, the 40 parts of kaolin, dimethyl silicone polymer 1 of 10~20 microns of average partial size ceramic film preparation: are taken
Part, 1 part of ammonium dihydrogen phosphate, 1 part of flyash, 1 part of carboxymethyl cellulose, 1 part of ammonium hydrogen carbonate, 5 parts of silica solution, titanate coupling agent
3 parts are mixed evenly, and mixture is then taken to mix at 70~95 DEG C with 1.5% oxalic acid aqueous solution of volume ratio, and slurries ratio 1:3 adds
80 DEG C are warming up to, is stirred 1~2 hour with ultrasonic oscillation and mixed slurry is made, ceramic membrane slurry brush is supported in ceramic catalytic
On body blank, blank is fitted into shuttle kiln and is burnt into, in calcination process, burns up polyurethane resin in bellmouth, firing temperature control
At 680~750 DEG C, firing time about 5h is detected system, forms the air hole in 5~30 microns of aperture, end is finally obtained after cleaning
Close ceramic-film tube.
Embodiment 2:
1) pug is kneaded: attapulgite being placed in the HCl solution of 6mol/L, 8 hours are stirred at 80 DEG C, washed, dried
After technique, it is ground to 400 mesh.By 3 parts of 30 parts of 30 parts of attapulgite, anatase titanium dioxide, γ~aluminium oxide being modified,
5 parts of silica, 1.5 parts of tungstic acid it is dry-mixed uniformly, be added 3 parts of cerous nitrate, 3 parts of ammonium metavanadate, 50% manganese nitrate of volume ratio are molten
6 parts of liquid, deionized water is prepared into slurry, and prepared ammonium metavanadate solution, cerous nitrate solution are added in above-mentioned slurry and stirred
It is even, above-mentioned slurry is evaporated under reduced pressure using Rotary Evaporators and removes moisture.The complete material of drying is forged under 500 DEG C of high temperature
It burns, Activation Activity is ground to 400 mesh, obtains catalyst powder；By 80 parts of catalyst powders, 3 parts of calcium oxide, 3 parts of magnesia,
2 parts of 0.3 part of polycarboxylate water-reducer, 7 parts of carboxymethyl cellulose, 3 parts of stearic acid, polyethylene glycol oxide mixing are placed in blender, are added
Water and a small amount of 5% ammonium hydroxide, stirring a period of time are prepared into plasticity pug；
2) aging: the pug after being kneaded kneading is put into vacuum pugmill and just refines, and controls and just refines vacuum degree in 0.08~0.1Mpa model
In enclosing, fine and close adobe is made, is placed in aging 36h under environment temperature；
3) molding squeezes out: by aging good pug descaling extrusion press extruding sheet blank, controlling extrusion pressure in 7MPa, obtains
Molding wet body catalyst；
4) prepared by ceramic catalytic supporter: blank being put into pressing on PVC plate and forms cladding, by the needle plate pressure of such as Fig. 4 shape
On cladding, the needle of 0.5~1mm diameter on needle plate pierces through cladding to form bellmouth, needle plate is removed, by polyurethane resin brush
It on cladding, is dried after allowing polyurethane resin to fill up bellmouth, polyurethane hardening of resin guarantor's type, then cuts out cladding in bellmouth
It is covered on after cutting on U-shaped mould, arranges cladding, continue to paint polyurethane resin, by the ceramic makings hand such as mediating, subsidizing, trim
Section, repairing type to cladding become end seal and close ceramic catalytic body blank, then that the wet body catalyst of forming is dry in 100~120 DEG C
Dry, catalyst after drying is cut with cutting machine, obtains the ceramic catalytic supporter semi-finished product of required length；
5) 50 parts of aluminium oxide, the 50 parts of kaolin, dimethyl silicone polymer 2 of 10~20 microns of average partial size ceramic film preparation: are taken
Part, the coupling of 2 parts of ammonium dihydrogen phosphate, 2 parts of flyash, 2 parts of carboxymethyl cellulose, 2 parts of ammonium hydrogen carbonate, 10 parts of silica solution, titanate esters
10 parts of agent are mixed evenly, and then take mixture to mix at 70~95 DEG C with 2.5% oxalic acid aqueous solution of volume ratio, slurries are than 1:
3, add and be warming up to 80 DEG C, is stirred 1~2 hour with ultrasonic oscillation and mixed slurry is made, by ceramic membrane slurry brush in ceramic catalytic
On supporter blank, blank is fitted into shuttle kiln and is burnt into, in calcination process, burns up polyurethane resin in bellmouth, firing temperature
At 680~750 DEG C, firing time about 5h is detected for degree control, forms the air hole in 5~30 microns of aperture, final after cleaning to obtain
Ceramic-film tube is closed to end seal.
Embodiment 3:
1) pug is kneaded: attapulgite being placed in the HCl solution of 6mol/L, 8 hours are stirred at 80 DEG C, washed, dried
After technique, it is ground to 400 mesh.By 2 parts of 25 parts of 25 parts of attapulgite, anatase titanium dioxide, γ~aluminium oxide being modified,
4 parts of silica, 1.5 parts of tungstic acid it is dry-mixed uniformly, be added 2 parts of cerous nitrate, 3 parts of ammonium metavanadate, 50% manganese nitrate of volume ratio are molten
5 parts of liquid, deionized water is prepared into slurry, and prepared ammonium metavanadate solution, cerous nitrate solution are added in above-mentioned slurry and stirred
It is even, above-mentioned slurry is evaporated under reduced pressure using Rotary Evaporators and removes moisture.The complete material of drying is forged under 500 DEG C of high temperature
It burns, Activation Activity is ground to 400 mesh, obtains catalyst powder；By 65 parts of catalyst powders, 3 parts of calcium oxide, 2 parts of magnesia,
2 parts of 0.2 part of polycarboxylate water-reducer, 5 parts of carboxymethyl cellulose, 2 parts of stearic acid, polyethylene glycol oxide mixing are placed in blender, are added
Water and a small amount of 5% ammonium hydroxide, stirring a period of time are prepared into plasticity pug；
2) aging: the pug after being kneaded kneading is put into vacuum pugmill and just refines, and controls and just refines vacuum degree in 0.08~0.1Mpa model
In enclosing, fine and close adobe is made, is placed in aging 30h under environment temperature；
3) molding squeezes out: by aging good pug descaling extrusion press extruding sheet blank, controlling extrusion pressure in 6MPa, obtains
Molding wet body catalyst；
4) prepared by ceramic catalytic supporter: blank being put into pressing on PVC plate and forms cladding, by the needle plate pressure of such as Fig. 4 shape
On cladding, the needle of 0.5~1mm diameter on needle plate pierces through cladding to form bellmouth, needle plate is removed, by polyurethane resin brush
It on cladding, is dried after allowing polyurethane resin to fill up bellmouth, polyurethane hardening of resin guarantor's type, then cuts out cladding in bellmouth
It is covered on after cutting on U-shaped mould, arranges cladding, continue to paint polyurethane resin, by the ceramic makings hand such as mediating, subsidizing, trim
Section, repairing type to cladding become end seal and close ceramic catalytic body blank, then that the wet body catalyst of forming is dry in 100~120 DEG C
Dry, catalyst after drying is cut with cutting machine, obtains the ceramic catalytic supporter semi-finished product of required length；
5) the 45 parts of aluminium oxide, 45 parts of kaolin, 1 part of dimethyl silicone polymer, phosphorus of 15 microns of average partial size ceramic film preparation: are taken
2 parts of acid dihydride ammonium, 2 parts of flyash, 1 part of carboxymethyl cellulose, 1 part of ammonium hydrogen carbonate, 8 parts of silica solution, 7 parts of titanate coupling agent it is mixed
Conjunction stirs evenly, and mixture is then taken to mix at 70~95 DEG C with 2% oxalic acid aqueous solution of volume ratio, and slurries ratio 1:3 adds and is warming up to
It 80 DEG C, is stirred 1~2 hour with ultrasonic oscillation and mixed slurry is made, by ceramic membrane slurry brush in ceramic catalytic supporter blank
On, blank is fitted into shuttle kiln and is burnt into, in calcination process, burns up polyurethane resin in bellmouth, firing temperature is controlled 680
~750 DEG C, firing time about 5h, the pore-creating at high temperature of ammonium dihydrogen phosphate, flyash is detected, and forms 5~30 microns of aperture
Air hole finally obtains end seal after cleaning and closes ceramic-film tube.
It is as follows that each embodiment end seal closes ceramic-film tube Testing index:
Flue gas is introduced into inlet air stack 12 when it is implemented, being exported in cement kiln end preheater, while double-current spray gun body 121 is opened
Beginning work will uniformly spray into flue gas after reducing agent ammonia atomization, ammonia is evaporated to by flue-gas temperature, in inlet air stack
Be circular layout double-current spray gun body 121 on 12, will uniformly spray into flue gas after reducing agent ammonia atomization, is steamed by flue-gas temperature
Hair is ammonia, is uniformly mixed and enters denitration dust collecting device by smoke inlet 1, by passing through 32 surface air hole of ceramic membrane, 320 mistake
Enter end seal after filter and close ceramic-film tube 3, carries out nitrogen oxides under the out of stock catalysis hole effect of taper that end seal closes ceramic-film tube 3
Removing.But the exhaust gas dust entered in denitration dust collecting device is dense, needs efficient and reliably clears up dust stratification, this
Invention clears up dust stratification using compressed air shock wave soot blower 5 and 6 combination of acoustic wave ash ejector, and compressed air shock wave is blown
Grey device 5 can close integral end and carry out cleaning dust stratification, sonic soot blowing comprehensively in 3 surface of ceramic-film tube and the out of stock catalysis hole 33 of taper
Device 6 is resonated using low-frequency sound wave and dust, and dust is made to become loosely be pulled away with air-flow, two kinds of efficient couplings of soot blower
Closing use can utmostly safeguards system stable operation.Because blowing medium used by compressed air shock wave soot blower 5 is pressure
Contracting air, so the input of the compressed air shock wave soot blower 5 is terminated with air compressor machine 8, but cold compressed air is directly blown to and urges
Agent surface can cause cold short transformation and influence system operating temperature to catalyst.In order to avoid normal temperature compressed air directly contacts
It causes catalyst to damage, is not required to increase additional energy as heat source using flue-gas temperature, while not influencing the work temperature of catalyst
Degree, it is advantageous to be provided with coil exchanger 7 at the smoke inlet 1, preferably the coil exchanger 7 is arranged
At the exhanst gas outlet 2, the required temperature of catalyst work is influenced to prevent heat exchanger 7 from taking away certain heat, it is described
7 entrance of heat exchanger is connected with air compressor machine, and the outlet of heat exchanger 7 is connected with the compressed air shock wave soot blower 5, the heat exchange
The area of section that device 7 is exported according to the flow and denitration dust collecting device 3 of required heated compressed air rationally arrange by efficient type selecting,
While compressed air being heated to required temperature, the resistance to system is reduced as far as possible；The compressed air of room temperature passes through disk
The temperature of compressed air can be risen to 200 DEG C or more by pipe heat exchanger, to meet requirement of the catalyst to cold temperature, then be led to
Overcompression air pipeline supplies compressed air shock wave soot blower 5, and making it, ceramic membrane is not closed in opposite end during efficient deashing
Pipe 3 damages, and the ash of inside reactor fully enters in the first ash bucket 9 and the second ash bucket 10 of bottom setting, by fixed
Phase clears up dust in first ash bucket 9 and the second ash bucket 10 and guarantees that the denitration dust collecting device is capable of the fortune of long-term efficient stable
Row.
In experimentation, into NO concentration 500ppm in the flue gas in denitration dust collecting device, controlling NH3 and NO molar ratio is
1:1, SO2 concentration are 600~800ppm, and O2 concentration 5%, catalyst is within the scope of 300~500 DEG C, with 92% denitration efficiency.
By denitration dust collecting device, treated that flue gas enters next process continues with.
The foregoing is merely present pre-ferred embodiments, are not intended to limit the invention, all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of new type water stall denitration dust collecting device, including shell, it is characterised in that the left and right ends of the shell are set respectively
It is equipped with smoke inlet and exhanst gas outlet, the smoke inlet is connected with inlet air stack, and being circular layout on the inlet air stack, there have to be double
Fluid sprayer, being equipped in the denitration dust collecting device shell is in 30~60 ° of air baffles being obliquely installed, and the air baffle is by institute
It states enclosure interior space and is divided into two parts, described higher one end of air baffle is located above the exhanst gas outlet, the gas
Stream partition is equipped with multiple groups end seal and closes ceramic-film tube, and the end seal closes ceramic-film tube nozzle towards the exhanst gas outlet, the end
Two sides are respectively equipped with compressed air shock wave soot blower and acoustic wave ash ejector above closing ceramic-film tube, and the housing bottom is located at institute
It states air baffle and is respectively arranged on the left side and the right side the first ash bucket and the second ash bucket.
2. a kind of new type water stall denitration dust collecting device according to claim 1, which is characterized in that the end seal closes ceramics
Membrane tube includes ceramic catalytic supporter, the ceramic membrane for being wrapped in ceramic catalytic support external surface, and the ceramic membrane is distributed with
Stomata, the ceramic support catalytic body thickness direction are evenly distributed with the out of stock catalysis hole of taper, the out of stock catalysis hole one of taper
End is located on the inside of ceramic support catalytic body, and the out of stock catalysis hole other end of taper is close to the ceramic membrane.
3. a kind of new type water stall denitration dust collecting device according to claim 2, it is characterized in that the out of stock catalysis of the taper
One end aperture that catalytic body ceramic membrane is close in hole is smaller.
4. a kind of new type water stall denitration dust collecting device according to claim 2, it is characterized in that the air hole aperture is 5
~30 microns.
5. a kind of new type water stall denitration dust collecting device according to claim 2, it is characterized in that the taper is out of stock
Being catalyzed hole aperture is 0.5~1 millimeter.
6. a kind of new type water stall denitration dust collecting device according to claim 1, which is characterized in that the compressed air swashs
Wave soot blower input terminal is connected with air compressor machine.
7. a kind of new type water stall denitration dust collecting device according to claim 4, which is characterized in that the compressed air swashs
Coil exchanger, the coil exchanger entrance and the air compressor machine phase are equipped between wave soot blower and the air compressor machine
Even, the heat exchanger exit is connected with the compressed air shock wave soot blower, and the coil exchanger is arranged in the shell
The interior close smoke inlet or the smoke outlet.
8. a kind of new type water stall denitration dust collecting device according to claim 1, it is characterized in that the end seal closes ceramic membrane
The longitudinal section of pipe is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435368.3A CN110052163A (en) | 2019-05-23 | 2019-05-23 | A kind of new type water stall denitration dust collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435368.3A CN110052163A (en) | 2019-05-23 | 2019-05-23 | A kind of new type water stall denitration dust collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110052163A true CN110052163A (en) | 2019-07-26 |
Family
ID=67324242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910435368.3A Pending CN110052163A (en) | 2019-05-23 | 2019-05-23 | A kind of new type water stall denitration dust collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110052163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639364A (en) * | 2019-09-30 | 2020-01-03 | 上海交通大学 | Porous ceramic tubular filtering catalytic denitration unit and flue gas purification method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2514510A1 (en) * | 2011-04-22 | 2012-10-24 | Korea Institute of Energy Research | Exhaust gas treating system using polymer membrane for carbon dioxide capture process |
| CN205379804U (en) * | 2016-01-06 | 2016-07-13 | 于龙根 | High temperature removes dust and flue denitration reactor integrated device |
| CN106732641A (en) * | 2016-11-14 | 2017-05-31 | 江苏省陶瓷研究所有限公司 | A kind of new ceramic-film tube with catalysis and preparation method thereof |
| CN107270268A (en) * | 2017-07-12 | 2017-10-20 | 河南开祥精细化工有限公司 | A kind of boiler smoke minimum discharge device |
| CN206688532U (en) * | 2017-03-14 | 2017-12-01 | 武汉京运通环保工程有限公司 | A kind of compressed air soot-blowing device with heater |
-
2019
- 2019-05-23 CN CN201910435368.3A patent/CN110052163A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2514510A1 (en) * | 2011-04-22 | 2012-10-24 | Korea Institute of Energy Research | Exhaust gas treating system using polymer membrane for carbon dioxide capture process |
| CN205379804U (en) * | 2016-01-06 | 2016-07-13 | 于龙根 | High temperature removes dust and flue denitration reactor integrated device |
| CN106732641A (en) * | 2016-11-14 | 2017-05-31 | 江苏省陶瓷研究所有限公司 | A kind of new ceramic-film tube with catalysis and preparation method thereof |
| CN206688532U (en) * | 2017-03-14 | 2017-12-01 | 武汉京运通环保工程有限公司 | A kind of compressed air soot-blowing device with heater |
| CN107270268A (en) * | 2017-07-12 | 2017-10-20 | 河南开祥精细化工有限公司 | A kind of boiler smoke minimum discharge device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639364A (en) * | 2019-09-30 | 2020-01-03 | 上海交通大学 | Porous ceramic tubular filtering catalytic denitration unit and flue gas purification method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105126818B (en) | A kind of wear-resisting anti-poisoning honeycomb fashion SCR denitration and preparation method thereof | |
| CN102114423B (en) | Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method | |
| CN109046320A (en) | Preparation process of honeycomb catalyst for coal-fired power plant denitrating flue gas and products thereof and application | |
| CN104646022B (en) | A kind of honeycomb fashion low-temperature denitration catalyst and preparation method thereof | |
| CN110052107A (en) | A kind of new type water stall denitration desulfurization catalyst system | |
| CN206215044U (en) | A kind of high temperature fume dust removal denitrification integrated device | |
| CN110052164A (en) | A kind of ceramic catalytic screen pipe | |
| CN104815644A (en) | Porous honeycomb type denitration catalyst for ship denitration, preparation method and application thereof | |
| CN112316716A (en) | Flue gas denitration system and operation method thereof | |
| CN107899566A (en) | A kind of dedusting denitrification integral catalyst and preparation method thereof | |
| CN111603911A (en) | Dedusting, desulfurization and denitrification multifunctional integrated control system, method and application | |
| CN110052163A (en) | A kind of new type water stall denitration dust collecting device | |
| CN113134269A (en) | Preparation of catalytic ceramic fiber filter cylinder and application of catalytic ceramic fiber filter cylinder in denitration and dedusting integration | |
| CN107469831A (en) | Dry-desulphurizer and its production method and application | |
| CN105126563A (en) | Desulfurization and denitrification medium for glass melter smoke and desulfurization and denitrification equipment and method | |
| CN111167436B (en) | Coated monolithic catalyst and preparation method and application thereof | |
| CN108355451B (en) | A kind of flue dust desulfurization and denitrification integral deduster | |
| CN109772157A (en) | A kind of the kiln exit gas purification system and purification method of new dry process rotary kiln | |
| CN107175121A (en) | Reduce SO2Oxidation rate abrasion-resistant honeycomb type denitration catalyst and preparation method thereof | |
| CN106902807A (en) | A kind of particle type low-temperature SCR catalyst and preparation method thereof | |
| CN116139669A (en) | Ceramic catalytic filter element, preparation method and flue gas multi-pollutant collaborative purification system and method based on ceramic catalytic filter element | |
| CN206325352U (en) | A kind of desulphurization denitration deduster | |
| CN213314068U (en) | High-efficient denitration and desulfurization device for industrial boiler | |
| CN208260414U (en) | A kind of dedusting, denitration collaborative device | |
| CN113457667A (en) | Denitration and dust removal integrated catalyst and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190726 |