CN109012101A - A kind of ceramics flue-gas dust-removing and desulfurization denitrating system - Google Patents
A kind of ceramics flue-gas dust-removing and desulfurization denitrating system Download PDFInfo
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- CN109012101A CN109012101A CN201810974053.1A CN201810974053A CN109012101A CN 109012101 A CN109012101 A CN 109012101A CN 201810974053 A CN201810974053 A CN 201810974053A CN 109012101 A CN109012101 A CN 109012101A
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- flue
- dust
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- 239000003546 flue gas Substances 0.000 title claims abstract description 108
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 63
- 230000023556 desulfurization Effects 0.000 title claims abstract description 62
- 239000000919 ceramic Substances 0.000 title claims abstract description 37
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 72
- 239000007921 spray Substances 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 45
- 239000000428 dust Substances 0.000 claims abstract description 38
- 239000000779 smoke Substances 0.000 claims abstract description 30
- 238000005453 pelletization Methods 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000010410 dusting Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 65
- 239000003795 chemical substances by application Substances 0.000 claims description 33
- 239000000843 powder Substances 0.000 claims description 33
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 32
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 32
- 238000010790 dilution Methods 0.000 claims description 28
- 239000012895 dilution Substances 0.000 claims description 28
- 239000000908 ammonium hydroxide Substances 0.000 claims description 23
- 230000008676 import Effects 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 238000000889 atomisation Methods 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 8
- 238000010612 desalination reaction Methods 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 239000005864 Sulphur Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 210000001367 artery Anatomy 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 238000012546 transfer Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- -1 tar Chemical compound 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01D53/75—Multi-step processes
-
- 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
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- 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
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—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
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- 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
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (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)
- Treating Waste Gases (AREA)
Abstract
A kind of ceramics flue-gas dust-removing and desulfurization denitrating system, including spraying Tower System, kiln smoke exhaust fan, desulfurization Tower System, dust pelletizing system, smoke evacuation system, SNCR denitration system；SNCR denitration system is used to carry out denitrating flue gas to hot-blast stove；Spraying Tower System includes spray tower, cyclone dust collectors, wet-emitting blower, and cyclone dust collectors are respectively communicated in spray tower, wet-emitting blower；Desulfurization Tower System includes desulfurizing tower, dusting device；The outlet of kiln smoke exhaust fan, wet-emitting blower outlet are respectively communicated in the gas inlet end of desulfurizing tower；Desulfurizing tower is equipped with flue gas throat, flue gas deceleration area, smoke reaction area from bottom to top above its gas inlet end, and dusting device is connected to flue gas deceleration area；Dust pelletizing system is respectively communicated with the exhanst gas outlet in desulfurizing tower, smoke evacuation system.The flue gas of hot-blast stove enters spray tower system after SNCR denitration system is handled, and then enters desulfurization Tower System together with kiln gas and carries out semi-dry desulphurization processing, purifies by dust pelletizing system, drain into atmosphere.
Description
Technical field
The present invention relates to flue gas desulfurization and denitrification system, in particular to a kind of ceramic flue-gas dust-removing and desulfurization denitrating system.
Background technique
Ceramic industry carries out Ceramics Enterprises waste gas pollution control and treatment as one of prevention and cure of pollution key industry, in ceramic industry garden,
Regional environment air quality will be improved significant.
Flue gas caused by Ceramics Enterprises mostlys come from spray drying tower and burning kiln, the main pollution of these flue gases
Object is dust and sulfur dioxide.Currently, most of the flue gas desulfurization administration way of Ceramics Enterprises is to use conventional methods, that is, spray
Mist tower discharged gas fume is by the way of sack cleaner and double alkali method desulfurizing tower, and roller kilns flue gas desulfurization uses wet desulphurization side
Formula.But wet desulphurization mode needs a large amount of shower water to carry out sulfur dioxide absorption, usual sulfur dioxide concentration is higher, needs
Liquid-gas ratio it is higher, quantity of circulating water is also more, and energy consumption is also higher.In addition, the unsuitable processing spray tower of sack cleaner is this
It is aqueous, containing acid and containing the complicated flue gas such as tar, be easy to cause bag dust filter to block, or even damaged, dedusting caused to be failed.Moreover, depositing
In water consumption height, operating cost height, disadvantage without secondary pollution.Apparently, be highly desirable to develop it is a set of for ceramic flue gas into
The system for desulfuration and denitration that row efficiently focuses on.
As it can be seen that the prior art could be improved and improve.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of ceramic flue-gas dust-removing and desulfurization is de-
Nitre system, have the advantages that water consumption it is few, it is without secondary pollution, without white cigarette discharge, can efficiently focus on ceramic flue gas, realize
Desulphurization and denitration and dedusting.
In order to achieve the above object, this invention takes following technical schemes:
A kind of ceramics flue-gas dust-removing and desulfurization denitrating system, including spraying Tower System, kiln smoke exhaust fan, desulfurization Tower System, dedusting
System, smoke evacuation system, SNCR denitration system；The SNCR denitration system is used to carry out denitrating flue gas to hot-blast stove；It is described spraying
Tower System includes spray tower, cyclone dust collectors, wet-emitting blower, and the flue gas of the hot-blast stove enters after SNCR denitration system is handled
Spray tower, gas inlet, the exhanst gas outlet of the cyclone dust collectors, which respectively correspond, is connected to spray tower, wet-emitting blower；It is described de-
Sulphur Tower System includes desulfurizing tower, dusting device；The kiln smoke exhaust fan outlet, wet-emitting blower outlet are respectively communicated in desulfurizing tower
Gas inlet end；The desulfurizing tower is equipped with flue gas throat, flue gas deceleration area, flue gas from bottom to top above its gas inlet end
The interior diameter of reaction zone, flue gas throat is smaller than smoke reaction area, and the bottom-up increase of the interior diameter of flue gas deceleration area, dust dress
It sets and is connected to flue gas deceleration area, for spraying into desulfurizing agent powder；Gas inlet, the exhanst gas outlet of the dust pelletizing system be respectively communicated in
Exhanst gas outlet, the smoke evacuation system of desulfurizing tower.
In the ceramic flue-gas dust-removing and desulfurization denitrating system, the SNCR denitration system includes ammonium hydroxide system, demineralized water
System, dilution water system, compressed air cylinder and spray gun；The ammonium hydroxide system includes ammonia water tank, ammonium hydroxide delivery pump；The desalination
Water system includes sweet-water tank, desalination water pump；The dilution water system includes dilution water pot, dilution water pump；Desalination water pump into
Mouth, outlet are respectively communicated in sweet-water tank, dilution water pot；Import, the outlet of ammonium hydroxide delivery pump are respectively communicated in ammonia water tank, spray gun
Liquid-inlet；Dilute the import of water pump, outlet is respectively communicated in the liquid-inlet of dilution water pot, spray gun；Compressed air cylinder connects
Pass through the gas feed of spray gun；The spray gun is set to hot-blast stove, for spraying ammonia to hot-blast stove.
In the ceramic flue-gas dust-removing and desulfurization denitrating system, the ammonium hydroxide delivery pump outlet is connected with ammonium hydroxide return pipe
Road, the outlet of ammonium hydroxide reflux line is in ammonia water tank；The dilution exit of pump is connected with dilution water reflux line, dilution water
The outlet of reflux line is in dilution water pot.
In the ceramic flue-gas dust-removing and desulfurization denitrating system, the dust pelletizing system include row spray pulsed jet cloth filter and
Desulphurization circulating pump；Import, the outlet of the Desulphurization circulating pump are respectively communicated with to be gone out in the bottom of row spray pulsed jet cloth filter
The flue gas deceleration area of mouth, desulfurizing tower.
In the ceramic flue-gas dust-removing and desulfurization denitrating system, the row spray pulsed jet cloth filter is after its gas inlet
Side is provided with deflector.
In the ceramic flue-gas dust-removing and desulfurization denitrating system, the dusting device includes desulfurizing agent powder cabin, proportioning device
With the blower that dusts；The proportioning device is set to the outlet at bottom of desulfurizing agent powder cabin；Import, the outlet of the blower that dusts connect respectively
Pass through the flue gas deceleration area of proportioning device and desulfurizing tower.
In the ceramic flue-gas dust-removing and desulfurization denitrating system, smoke evacuation system includes air-introduced machine and chimney；The air-introduced machine
Import, outlet be respectively communicated with the exhanst gas outlet in dust pelletizing system, chimney.
It further include refining system in the ceramic flue-gas dust-removing and desulfurization denitrating system；The outlet at bottom of the desulfurizing tower,
The outlet at bottom of cyclone dust collectors and the outlet at bottom of row spray pulsed jet cloth filter are respectively communicated in refining system.
It further include atomization system in the ceramic flue-gas dust-removing and desulfurization denitrating system；The atomization system include water tank,
Multi-stage booster pump；Import, the outlet of the multi-stage booster pump are respectively communicated in the smoke reaction area of water tank, desulfurizing tower.
The utility model has the advantages that
The present invention provides a kind of ceramic flue-gas dust-removing and desulfurization denitrating systems, using SNCR denitration system to the flue gas in hot-blast stove
Gametic fertility processing is carried out, is passed through desulfurization together after then converging after the processing of spraying Tower System with the flue gas come out from kiln
Tower System；Desulfurization Tower System uses venturi technology, and the flue gas deceleration area toward desulfurizing tower sprays into desulfurizing agent powder, so that the cigarette risen
Gas is collided with the desulfurizing agent powder of decline mutually fierceness, is mixed, and contains flood tide steam using the flue gas come out from spray tower
Superiority condition builds good desulfurizing tower flue gas desulfurization environment, special " recirculating fluidized bed " pyramidal structure, so that mixed flue gas
Flow velocity is improved in flue gas throat, the flue gas deceleration area reduction of speed cooling being then gradually increased in interior diameter, while the desulfurization with penetrating
Agent powder generates strong rolling, mixing, so that unsaturation vapor contained in flue gas is saturated rapidly and condenses atomization, forms
More and fine and close fine droplets, fully absorbs the desulfurizing agent powder of the sulfur dioxide gas in flue gas and penetrating, reach effectively heat transfer,
Mass transfer, which merges, occurs neutralization reaction.In addition, the Desulphurization circulating pump being arranged by dust pelletizing system is by the desulfurization of dust pelletizing system bottom
Ash is delivered to flue gas deceleration area, realizes resource reutilization.
Detailed description of the invention
Fig. 1 is the process flow chart of ceramic flue-gas dust-removing and desulfurization denitrating system provided by the invention.
Fig. 2 is the process flow chart of SNCR denitration system in ceramic flue-gas dust-removing and desulfurization denitrating system provided by the invention.
Fig. 3 is the work of desulfurization Tower System and dust pelletizing system in ceramic flue-gas dust-removing and desulfurization denitrating system provided by the invention
Make schematic diagram.
Specific embodiment
The present invention provides a kind of ceramic flue-gas dust-removing and desulfurization denitrating system, to make the purpose of the present invention, technical solution and effect
Fruit is clearer, clear, and the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that this place
Specific examples are only used to explain the present invention for description, is not intended to limit the present invention.
Fig. 1, Fig. 2 and Fig. 3 are please referred to, the present invention provides a kind of ceramic flue-gas dust-removing and desulfurization denitrating system, including spray tower
System, kiln smoke exhaust fan, desulfurization Tower System, dust pelletizing system, smoke evacuation system, SNCR denitration system 3；SNCR denitration system 3 is used
In to hot-blast stove progress denitrating flue gas；Spraying Tower System includes spray tower 41, cyclone dust collectors 42, wet-emitting blower 43, hot-blast stove 1
Flue gas enter spray tower 41 after the processing of SNCR denitration system 3, gas inlet, the exhanst gas outlet of cyclone dust collectors 42 be right respectively
Spray tower 41, wet-emitting blower 43 should be connected to；Desulfurization Tower System includes desulfurizing tower 5, dusting device；Kiln smoke exhaust fan 22 goes out
Mouth, wet-emitting blower outlet 43 are respectively communicated in the gas inlet end of desulfurizing tower 5；Desulfurizing tower 5 is above its gas inlet end under
It is up equipped with flue gas throat 51, flue gas deceleration area 52, smoke reaction area 53, the interior diameter of flue gas throat 51 is than smoke reaction area 53
It is small, the bottom-up increase of the interior diameter of flue gas deceleration area 52, dusting device is connected to flue gas deceleration area 52, for spraying into desulfurization
Agent powder；Gas inlet, the exhanst gas outlet of dust pelletizing system are respectively communicated with the exhanst gas outlet in desulfurizing tower 5, smoke evacuation system.
The desulfurization Tower System uses venturi technology, is sprayed with desulfurization by dusting device in the flue gas deceleration area of desulfurizing tower
Agent powder is contacted with each other with desulfurizing agent powder, collides, is mixed so that rising flue gas, and the ingenious flue gas come out using spray tower is contained
This condition richly endowed by nature of flood tide steam, has been transformed the environment of flue gas desulfurization in desulfurizing tower whereby；When flue gas passes through flue gas throat
Speed increases, and then in flue gas deceleration area cooling reduction of speed, and generates strong rolling, collision with desulfurizing agent powder and mixes, so that
Unsaturation vapor contained in flue gas becomes rapidly saturation, the concurrent solidifying atomization of raw food, to form more and intensive droplets, sufficiently
Sulfur dioxide absorption gas and desulfurizing agent powder realize neutralization reaction.In the smoke reaction area of desulfurizing tower, gravity has been built --- it is floating
The environment of dynamic balance enables desulfurizing agent powder to roll, be suspended in smoke reaction area for a long time, and circulation is formed inside tower,
In fierce rolling, collision process, the solid content shell of Desulphurization surface resultant is destroyed, the unreacted fresh granules in the inside
It is exposed and continues to participate in neutralization reaction, accelerates reaction speed, rate of drying to objectively play and increase substantially
The effect of the utilization rate of desulfurizing agent powder；Desulfurization heat transfer, mass transfer and reaction time are substantially prolonged, desulfurization effect, desulfurization are improved
Efficiency can be stablized 90% or more.In addition, flue gas can carry a part of desulfurizing agent powder in uphill process or Desulphurization enters dedusting
System, the gas solid separation processing by dust pelletizing system, Desulphurization or desulfurizing agent powder are settled, and are deposited in dirt pocket bottom, and will
Its flue gas reduction of speed area for being delivered to desulfurizing tower, realization recycle, save the dosage of desulfurizing agent powder, reduce the cost of enterprise,
And without sewage discharge.
Specifically, SNCR denitration system 3 include ammonium hydroxide system, DW system demineralized water system, dilution water system, compressed air cylinder 37 with
And spray gun 38；Ammonium hydroxide system includes ammonia water tank 31, ammonium hydroxide delivery pump 32；DW system demineralized water system includes sweet-water tank 33, desalination water pump
34；Diluting water system includes dilution water pot 35, dilution water pump 36；Import, the outlet of desalination water pump 34 are respectively communicated in demineralized water
Case 33, dilution water pot 35；Import, the outlet of ammonium hydroxide delivery pump 32 are respectively communicated in the liquid-inlet of ammonia water tank 31, spray gun 38
382；Dilute the import of water pump 36, outlet is respectively communicated in the liquid-inlet 382 of dilution water pot 35, spray gun 38；Compressed air cylinder
37 are connected to the gas feed 381 of spray gun 38；Spray gun 38 is set to hot-blast stove 1a and hot-blast stove 1b, for spraying ammonia in hot-blast stove.
In addition, the gas vent of compressed air cylinder is also connected in the protection sleeve pipe of spray gun, to cooling gun body, spray gun is protected.
Ammonium hydroxide and dilution water are passed through the liquid-inlet of spray gun together, are controlled by adjustings such as flowmeter, pressure, carry out ammonia concn tune
Section.Ammonium hydroxide, compressed air enter from liquid-inlet, gas feed respectively, and hot-blast stove is then sprayed onto out of spray gun.
Specifically, the outlet of ammonium hydroxide delivery pump 32 is connected with ammonium hydroxide reflux line, and the outlet of ammonium hydroxide reflux line is in ammonia
Water pot 31；The outlet of dilution water pump 36 is connected with dilution water reflux line, and the outlet of dilution water reflux line is in dilution water pot
35。
Specifically, dust pelletizing system includes row spray pulsed jet cloth filter 71 and Desulphurization circulating pump 72；Desulphurization circulating pump
72 import exports to be respectively communicated with and sprays the outlet at bottom of pulsed jet cloth filter 71, the flue gas deceleration area 52 of desulfurizing tower 5 in row.
Desulphurization circulating pump is set, particle (Desulphurization, desulfurizing agent that will be settled down after row spray pulsed jet cloth filter processing flue gas
Powder, dust etc.) it is delivered to flue gas deceleration area, the desulfurizing agent powder, the Desulphurization that do not play desulfurization effect are sent back in desulfurizing tower and continued
Desulfurization work is participated in, its utilization rate is improved, realizes Recycling.
Specifically, row spray pulsed jet cloth filter 71 is provided with deflector 73 on rear side of its gas inlet.When flue gas is from de-
Sulphur top of tower outlet side enters dust pelletizing system after coming out, and mutually hits with deflector before this, so that coarse granule is settled, fallen into flue gas
The ash bucket of cabinet, play the role of it is pre- gather dust, while air-flow and coarse granule being prevented directly to wash away filter bag, is conducive to extend filter
The service life of bag.In addition, being equipped with the filter bag 74 of several arrays arrangement, the major diameter of filter bag inside row spray pulsed jet cloth filter 71
Than for 175:4, it is preferable that filter bag exit velocity is effectively reduced in the filter bag for selecting diameter to be 7000 millimeters for 160 millimeters, length,
Resistance is minimized.Blowing device 75 is set above filter bag, air hydro-peening is carried out to filter bag, removal filter bag surface accumulates
Dust.
Specifically, dusting device includes desulfurizing agent powder cabin 61, proportioning device 62 and the blower 63 that dusts；Proportioning device 62 is set to
The outlet at bottom of desulfurizing agent powder cabin 61；Dust blower 63 import, outlet be respectively communicated in the cigarette of proportioning device 62 and desulfurizing tower 5
Gas deceleration area 52.By proportioning device and the blower cooperating that dusts, desulfurizing agent powder is quantitatively conveyed for desulfurizing tower, is avoided excessive
Desulfurizing agent powder plays desulfurization effect and just falls desulfurization tower bottom, wastes a large amount of desulfurizing agent powder.
Specifically, smoke evacuation system includes air-introduced machine 81 and chimney 82；Import, the outlet of air-introduced machine 81 are respectively communicated in dedusting
Exhanst gas outlet, the chimney 82 of system.
Further, which further includes refining system 10；The bottom of desulfurizing tower 5 goes out
The outlet at bottom of mouth, the outlet at bottom of cyclone dust collectors 42 and row spray pulsed jet cloth filter 71 is respectively communicated in refining system
10.Refining system includes slurry pool, blender and water supply pump.In sweetening process, desulfurizing agent powder, vapor and sulfur dioxide it
Between occur neutralization reaction, form particle, and be settled down to desulfurization tower bottom, meanwhile, 76 mistake of Desulphurization settled inside dust pelletizing system
It is more, it can be transported to refining system, sent to slurry pool, water distribution is stirred, and slurrying is completed, and realizes that desulfurization product is easy to locate
Reason, it is without secondary pollution.
Further, which further includes atomization system；Atomization system include water tank 91,
Multi-stage booster pump 92；Import, the outlet of multi-stage booster pump 92 are respectively communicated in the smoke reaction area 53 of water tank 91, desulfurizing tower 5.When
When into water deficient contained by the mixed flue gas inside desulfurizing tower, then it is that desulfurizing tower supplements water by multi-stage booster pump, works as water
It is atomized rapidly, is humidified when into desulfurizing tower, so that hydrone sulfur dioxide absorption gas and desulfurizing agent powder.
In conclusion the present invention provides a kind of ceramic flue-gas dust-removing and desulfurization denitrating systems, using SNCR denitration system pair
Flue gas in hot-blast stove carries out gametic fertility processing, then converges after the processing of spraying Tower System with the flue gas come out from kiln
It is passed through desulfurization Tower System together afterwards；Desulfurization Tower System uses venturi technology, and the flue gas deceleration area toward desulfurizing tower sprays into desulfurizing agent
Powder so that the flue gas risen is collided with the desulfurizing agent powder of decline mutually fierceness, mixed, and utilizes the flue gas come out from spray tower
Superiority condition containing flood tide steam builds good desulfurizing tower flue gas desulfurization environment, special " recirculating fluidized bed " tower-shaped knot
Structure, so that mixed flue gas improves flow velocity in flue gas throat, the flue gas deceleration area reduction of speed cooling being then gradually increased in interior diameter, together
When with the desulfurizing agent powder of penetrating generate strong rolling, mix so that unsaturation vapor contained in flue gas is saturated rapidly simultaneously
Condensation atomization forms more and fine and close fine droplet, fully absorbs the sulfur dioxide gas in flue gas and the desulfurizing agent of penetrating
Powder reaches effectively heat transfer, mass transfer merges generation neutralization reaction.In addition, will be removed by the Desulphurization circulating pump that dust pelletizing system is arranged
The Desulphurization of dirt system bottom is delivered to flue gas deceleration area, realizes resource reutilization.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (9)
1. a kind of ceramics flue-gas dust-removing and desulfurization denitrating system, which is characterized in that including spraying Tower System, kiln smoke exhaust fan, take off
Sulphur Tower System, dust pelletizing system, smoke evacuation system, SNCR denitration system；The SNCR denitration system is used to carry out flue gas to hot-blast stove
Denitration；The spraying Tower System includes spray tower, cyclone dust collectors, wet-emitting blower, and the flue gas of the hot-blast stove is through SNCR denitration
Enter spray tower after system processing, gas inlet, the exhanst gas outlet of the cyclone dust collectors, which respectively correspond, is connected to spray tower, row
Wet blower；The desulfurization Tower System includes desulfurizing tower, dusting device；The kiln smoke exhaust fan outlet, wet-emitting blower outlet point
It is not connected to the gas inlet end of desulfurizing tower；The desulfurizing tower above its gas inlet end from bottom to top be equipped with flue gas throat,
Flue gas deceleration area, smoke reaction area, the interior diameter of flue gas throat is smaller than smoke reaction area, and the interior diameter of flue gas deceleration area is under
It is increased up, dusting device is connected to flue gas deceleration area, for spraying into desulfurizing agent powder；Gas inlet, the cigarette of the dust pelletizing system
Gas outlet is respectively communicated with the exhanst gas outlet in desulfurizing tower, smoke evacuation system.
2. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 1, which is characterized in that the SNCR denitration system
Including ammonium hydroxide system, DW system demineralized water system, dilution water system, compressed air cylinder and spray gun；The ammonium hydroxide system include ammonia water tank,
Ammonium hydroxide delivery pump；The DW system demineralized water system includes sweet-water tank, desalination water pump；The dilution water system includes dilution water pot, dilute
Release water pump；Import, the outlet of desalination water pump are respectively communicated in sweet-water tank, dilution water pot；Import, the outlet point of ammonium hydroxide delivery pump
It is not connected to the liquid-inlet of ammonia water tank, spray gun；Dilute the import of water pump, outlet is respectively communicated in the liquid of dilution water pot, spray gun
Body import；Compressed air cylinder is connected to the gas feed of spray gun；The spray gun is set to hot-blast stove, for spraying ammonia to hot-blast stove.
3. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 2, which is characterized in that the ammonium hydroxide delivery pump goes out
Mouth is connected with ammonium hydroxide reflux line, and the outlet of ammonium hydroxide reflux line is in ammonia water tank；The dilution exit of pump is connected with dilute
Water reflux line is released, the outlet of dilution water reflux line is in dilution water pot.
4. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 1, which is characterized in that the dust pelletizing system includes
Row spray pulsed jet cloth filter and Desulphurization circulating pump；Import, the outlet of the Desulphurization circulating pump, which are respectively communicated with, sprays arteries and veins in row
Rush the outlet at bottom of bag filter, the flue gas deceleration area of desulfurizing tower.
5. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 4, which is characterized in that the row sprays pulse bag
Deduster is provided with deflector on rear side of its gas inlet.
6. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 1, which is characterized in that the dusting device includes
Desulfurizing agent powder cabin, proportioning device and the blower that dusts；The proportioning device is set to the outlet at bottom of desulfurizing agent powder cabin；The wind that dusts
Import, the outlet of machine are respectively communicated with the flue gas deceleration area in proportioning device and desulfurizing tower.
7. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 1, which is characterized in that smoke evacuation system includes air inducing
Machine and chimney；Import, the outlet of the air-introduced machine are respectively communicated with the exhanst gas outlet in dust pelletizing system, chimney.
8. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 4, which is characterized in that further include refining system；
The outlet at bottom of the outlet at bottom of the desulfurizing tower, the outlet at bottom of cyclone dust collectors and row spray pulsed jet cloth filter connects respectively
Pass through refining system.
9. ceramics flue-gas dust-removing and desulfurization denitrating system according to claim 1-8, which is characterized in that further include mist
Change system；The atomization system includes water tank, multi-stage booster pump；Import, the outlet of the multi-stage booster pump are respectively communicated in water
The smoke reaction area of case, desulfurizing tower.
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| CN109569223A (en) * | 2019-01-24 | 2019-04-05 | 上海弗来应实业有限公司 | A kind of desulphurization denitration dust pelletizing system |
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| CN114682070A (en) * | 2020-12-28 | 2022-07-01 | 福建龙净脱硫脱硝工程有限公司 | Ceramic flue gas treatment system |
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