CN107569937A - A kind of incinerator smoke desulfuring and denitrifying apparatus - Google Patents
A kind of incinerator smoke desulfuring and denitrifying apparatus Download PDFInfo
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- CN107569937A CN107569937A CN201710747122.0A CN201710747122A CN107569937A CN 107569937 A CN107569937 A CN 107569937A CN 201710747122 A CN201710747122 A CN 201710747122A CN 107569937 A CN107569937 A CN 107569937A
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- desulfurization
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
A kind of incinerator smoke desulfuring and denitrifying apparatus, including incinerator, sack cleaner, blower fan, adsorptive reactor, water-bath type ammonia gasifier, desulfurizing tower, dehumidifying purifying column, wet electrical dust precipitator, it is characterised in that：The incinerator connects sack cleaner, blower fan, adsorptive reactor, water-bath type ammonia gasifier, desulfurizing tower, dehumidifying purifying column, wet electrical dust precipitator by pipeline, the adsorptive reactor is that the double sections of composite bed are cross-flow moving bed, the cross section of the adsorptive reactor is rectangle, generally approximate cuboid, the adsorptive reactor are made up of for two sections denitration section with desulfurization section.The present invention can remove the SO in incinerator smoke2, NOx, pollutant, the flue gas such as mercury, bioxin and flue dust be 99~99.99% to fine particle and aerosol removal efficiency by wet electrical dust precipitator, realize fine dust in flue gas, SO3The efficient removal of the combined pollutants such as acid mist；Make flue gas qualified discharge, reduce environmental pollution.
Description
Technical field
The present invention relates to a kind of desulphurization denitration equipment of flue gas, is filled more particularly, to a kind of incinerator smoke desulphurization denitration
Put, belong to environmental technology field.
Background technology
In prior art, the flue gas between 850 DEG C~1100 DEG C caused by after fully burning of house refuse enters
Enter waste heat boiler, after 550 DEG C~600 DEG C of flue gas of waste heat boiler outflow is down to 180 DEG C by misting cooling cooling system
Denitration process is carried out, at present, the processing for incinerator smoke, denitrating technique is mainly using ammoniacal liquor as in reducing agent, with flue gas
Reaction of nitrogen oxides；Shortcomings be present in the above method：
(1), denitrating technique reacts mainly using ammoniacal liquor as reducing agent with nitrogen oxides in effluent；Its shortcoming is ammoniacal liquor
With liquefied ammonia be dangerous cargo it is not readily transportable and storage.
The content of the invention
It is an object of the present invention to overcome the above deficiencies, so as to provide a kind of incinerator smoke desulfuring and denitrifying apparatus,
The device has desulfuration efficiency high, and denitration efficiency is high, and investment operating cost is low, and reliability is high, and energy consumption is low, and maintenance is easy, takes up an area face
The advantages that product is small, and system service life is long.
The technical scheme is that：A kind of incinerator smoke desulfuring and denitrifying apparatus, including incinerator, sack cleaner,
Blower fan, adsorptive reactor, water-bath type ammonia gasifier, desulfurizing tower, dehumidifying purifying column, wet electrical dust precipitator, it is characterised in that：It is described
Incinerator by pipeline connect sack cleaner, blower fan, adsorptive reactor, water-bath type ammonia gasifier, desulfurizing tower, except wet purification
Tower, wet electrical dust precipitator, the adsorptive reactor are that the double sections of composite bed are cross-flow moving bed, and the cross section of the adsorptive reactor is
Rectangle, generally approximate cuboid, the adsorptive reactor are made up of for two sections denitration section with desulfurization section, and the denitration section includes de-
Nitre section collection chamber, denitration region and denitration section sub-air chamber, the desulfurization section divide gas including desulfurization section collection chamber, desulfurization zone and desulfurization section
Room, the denitration region are connected with the desulfurization zone by being arranged on two intersegmental blanking channels, and the denitration section sub-air chamber is with taking off
A flue gas ammonia mixing chamber is provided between sulphur section collection chamber, the desulfurization section sub-air chamber connects with a gas approach, and flue gas enters
Mouth is connected with fan outlet, and the denitration section collection chamber connects with an exhanst gas outlet, and the desulfurization section collection chamber passes through a flue gas
Ammonia mixing chamber connects with the denitration section sub-air chamber, and the flue gas ammonia mixing chamber connects with an ammonia imports, the desulfurization
Set an activated coke to be layered grid in area, the desulfurization is distinguished into preceding active focus layer and rear active focus layer, the preceding activated coke
Layer and rear active focus layer lower part are not correspondingly arranged preceding discharging opening and rear discharging opening, and the preceding discharging opening and rear discharging opening pass through valve
The different blanking flow of gate control activated coke, make preceding active focus layer and rear active focus layer of the activated coke particle in desulfurization zone downward
Mobile speed is different with the residence time, and preceding discharging opening connects mixing blanking bin with rear discharging opening, and the adsorptive reactor takes off
One is set to be used to clear up the desulfurization zone and the cleaning passage of the denitration region active coke, the absorption between nitre section and desulfurization section
Adsorptive reactor storage tank, the water-bath type ammonia gasifier, including cylinder, coiled heat exchanger tube, water are provided with above reactor
Bath ammonia gasifier feed tube and water-bath type ammonia gasifier escape pipe, bottom is provided with electric heater in cylinder, lower end on the left of cylinder
Provided with water-bath type ammonia gasifier feed tube, upper end is provided with water-bath type ammonia gasifier escape pipe, four groups of coiled heat exchange on the right side of cylinder
Pipe is uniformly arranged in cylinder, and upper cover is provided with the top of cylinder, and cylinder body bottom is provided with low head, and low head is flat underside,
Water-bath type ammonia gasifier escape pipe is connected with ammonia dashpot import, and the outlet of ammonia dashpot is connected with ammonia/air mixer,
Ammonia/air mixer be connected with dilution ammonia blower fan all the way, and another way is connected with ammonia imports, exhanst gas outlet by pipeline and
Desulfurizing tower air intake connects, and desulfurizing tower air intake lower sides are provided with pH detection controllers, and pH detection controllers pass through control
Cable is connected with desulfurization pump, and desulfurizing tower air intake bottom connects aeration displacement reaction tank by pipeline, and aeration displacement reaction tank connects
Sedimentation basin is connect, aeration displacement reaction tank side is provided with roots blower, and opposite side is provided with calcium hydroxide feed bin, calcium hydroxide material
Storehouse connects discharger, discharger connection electron helical scale, electron helical scale connection frequency conversion rotary feeder, frequency conversion rotary feeder
Connection aeration displacement reaction tank, aeration displacement reaction tank pool side are provided with aeration displacement reaction tank pH detection controllers, and aeration is put
Change reaction tank pH and detect controller by controlling cable to be connected with frequency conversion rotary feeder, sedimentation basin connection regulating reservoir, sedimentation basin
Bottom is provided with the outer discharge pipe of waste liquid, and regulating reservoir opposite side is provided with sodium hydroxide storage tank, and regulating reservoir pool side is provided with regulating reservoir
PH detects controller, and regulating reservoir pH detects controller by controlling cable to be connected with electric charging valve, desulfurizing tower air intake top
Nozzle is provided with, nozzle top is provided with demister, and demister top is provided with exhanst gas outlet, and exhanst gas outlet connection removes wet purification
Tower, damp proof air cleaner is provided with the purifying column that dehumidifies, dehumidifying purification tower bottom is provided with the outer comb of dehumidifying purifying column waste liquid
Road, nozzle are connected through desulfurization inner wall of tower with the hose adapter of desulfurizing tower outer wall, and hose adapter is connected with shower, using hose adapter mesh
Be easy for install, repair demolition is convenient, and shower is fixed on desulfurizing tower outer wall by support, and shower connects with feed tube
Connect, feed tube is connected with desulfurization pump, desulfurization pump connection regulating reservoir, the wet electrical dust precipitator, including high-tension electricity feedway, interior
Portion is the housing of cavity, is provided with air inlet, gas outlet, tank on housing, tank is located at housing bottom, collection is provided with housing
Dirt pole, discharge electrode, top cleaning device, bottom cleaning device, air inlet are located at lower housing portion, and dehumidifying purifying column exhanst gas outlet leads to
Piping is connected with air inlet, and gas outlet is located at case top, and top cleaning device is arranged on the top of dust collecting electrode, bottom cleaning
Device is arranged on the lower section of dust collecting electrode, top cleaning device, bottom cleaning device by pipeline connecting valve, water pump, by
The upper and lower of dust collecting electrode sets top cleaning device, bottom cleaning device respectively, can greatly improve removing for wet electrical dust precipitator
Dirt efficiency, the discharge electrode are suspended to the channel center of dust collecting electrode, and spray point, the discharge electrode two are provided with the discharge electrode
End is connected with discharge electrode support and discharge electrode fixed mount respectively, and the discharge electrode support is located at discharge electrode top, the discharge electrode
Fixed mount is located at discharge electrode bottom.
The beneficial effects of the invention are as follows：The present invention provides a kind of incinerator smoke desulfuring and denitrifying apparatus, passes through adsorption reaction
Device, flue gas are eliminated the part SO in flue gas in adsorptive reactor by activated coke absorption2, NOx, mercury, bioxin and flue dust etc.
Pollutant；Using spray wet desulphurization mode, non-blind area, desulphurization reaction is set constantly to be sufficiently carried out, desulfurization degree is high；NaOH is consumed
Fewer, what is actually mainly consumed after the circulation of system absorbing liquid is calcium hydroxide, and operating cost is low；Taken off provided with special efficient
Water demister, dehydration, defogging effect are good；Flue gas is 99 to fine particle and aerosol removal efficiency by wet electrical dust precipitator
~99.99%, realize fine dust in flue gas, SO3The efficient removal of the combined pollutants such as acid mist；The device has desulfurization effect
Rate is high, and denitration efficiency is high, and investment operating cost is low, and reliability is high, and energy consumption is low, and maintenance is easy, and floor space is small, system service life
The advantages that long；The noxious pollutant such as bioxin, heavy metal in flue gas can be adsorbed, makes flue gas qualified discharge, avoids to environment
Pollute.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is sectional view at A-A in Fig. 1.
Fig. 3 is sectional view at B-B in Fig. 1.
In Fig. 1, Fig. 2, Fig. 3,1. adsorptive reactors, 2. activated cokes layering grid, 3. blanking channels, 4. ammonia imports, 5.
Active focus layer afterwards, 6. wet electrical dust precipitators, active focus layer before 7., 8. water-bath type ammonia gasifiers, 9. desulfurization section sub-air chamber, 10. is de-
Sulphur section collection chamber, 11. denitration section collection chambers, 12. denitration section sub-air chamber, discharging opening before 13., discharging opening after 14., 15. denitration regions,
16. adsorptive reactor storage tank, 17. cleaning passages, 18. mixing blanking bins, 19. flue gas ammonia mixing chambers, 20. exhanst gas outlets,
21. gas approach, 22. desulfurization zones, 23. incinerators, 24. sack cleaners, 25. blower fans, 26. dilution ammonia blower fans, 27. ammonia
Gas/air mixer, 28. ammonia dashpots, 29. desulfurizing tower air intakes, 30. desulfurizing towers, 31. demisters, 32. exhanst gas outlets,
33. shower, 34. supports, 35. hose adapters, 36. nozzles, 37. feed tubes, 38.pH detection controllers, 39. desulfurization pumps, 40. is anti-
Humid air filter, 41. dehumidifying purifying columns, the 42. outer discharge pipes of dehumidifying purifying column waste liquid, 43. calcium hydroxide feed bins, 44. dischargings
Device, 45. electron helical scales, 46. frequency conversion rotary feeders, 47. aeration displacement reaction tanks, 48. aeration displacement reaction tank pH detections
Controller, 49. roots blowers, 50. sedimentation basins, the outer discharge pipe of 51. waste liquids, 52. electric charging valves, 53. sodium hydroxide storage tanks,
54. regulating reservoir pH detects controller, 55. regulating reservoirs, 61. high-tension electricity feedways, 62. discharge electrodes, 63. dust collecting electrodes, 64. bottoms
Cleaning device, 65. air inlets, 66. tanks, 67. gas outlets, 68. top cleaning devices, 69. valves, 610. discharge electrode supports,
611. discharge electrode fixed mounts, 612. water pumps, 613. housings, 614. spray points, 81. water-bath type ammonia gasifier feed tubes, 82. electricity add
Hot device, 83. coiled heat exchanger tubes, 84. cylinders, 85. water-bath type ammonia gasifier escape pipes, 86. upper covers, 87. low heads.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention is a kind of incinerator smoke desulfuring and denitrifying apparatus, including incinerator 23, cloth
Bag dust collector 24, blower fan 25, adsorptive reactor 1, water-bath type ammonia gasifier 8, desulfurizing tower 30, dehumidifying purifying column 41, wet type electricity remove
Dirt device 6, it is characterised in that：The incinerator 23 connects sack cleaner 24, blower fan 25, adsorptive reactor 1, water-bath by pipeline
Formula ammonia gasifier 8, desulfurizing tower 30, dehumidifying purifying column 41, wet electrical dust precipitator 6, the adsorptive reactor 1 are that the double sections of composite bed are wrong
Moving bed is flowed, the cross section of the adsorptive reactor 1 is rectangle, and generally approximate cuboid, the adsorptive reactor 1 is by denitration
Two sections of compositions of section and desulfurization section, the denitration section includes denitration section collection chamber 11, denitration region 15 and denitration section sub-air chamber 12, described
Desulfurization section includes desulfurization section collection chamber 10, desulfurization zone 22 and desulfurization section sub-air chamber 9, and the denitration region 15 is logical with the desulfurization zone 22
Cross and be arranged on two intersegmental blanking channels 3 and connect, one is provided between the denitration section sub-air chamber 12 and desulfurization section collection chamber 10
Flue gas ammonia mixing chamber 19, the desulfurization section sub-air chamber 9 connect with a gas approach 21, and gas approach 21 connects with fan outlet
Connect, the denitration section collection chamber 11 is connected with an exhanst gas outlet 20, and the desulfurization section collection chamber 10 is mixed by a flue gas ammonia
Room 19 connects with the denitration section sub-air chamber 12, and the flue gas ammonia mixing chamber 19 connects with an ammonia imports 4, the desulfurization zone
Set an activated coke to be layered grid 2 in 22, the desulfurization zone 22 is divided into preceding active focus layer 7 and rear active focus layer 5, it is living before described
Property focus layer 7 and the rear bottom of active focus layer 5 be correspondingly arranged preceding discharging opening 13 and rear discharging opening 14 respectively, the preceding discharging opening 13 and after
Discharging opening 14 makes preceding active focus layer 7 of the activated coke particle in desulfurization zone by the different blanking flow of Valve controlling activated coke
It is different with the residence time with rear active focus layer 5 speed moved down, preceding discharging opening 13 and rear discharging opening 14 connection mixing blanking
Storehouse 18, one is set to be used to clear up the desulfurization zone 22 and the denitration between the denitration section and desulfurization section of the adsorptive reactor 1
The cleaning passage 17 of the activated coke of area 15, the top of adsorptive reactor 1 are provided with adsorptive reactor storage tank 16, the water-bath type
Ammonia gasifier 8, including cylinder 84, coiled heat exchanger tube 83, water-bath type ammonia gasifier feed tube 81 and water-bath type ammonia gasifier go out
Tracheae 85, bottom is provided with electric heater 82 in cylinder 84, and the left side lower end of cylinder 84 is provided with water-bath type ammonia gasifier feed tube 81, cylinder
The right side upper end of body 84 is provided with water-bath type ammonia gasifier escape pipe 85, and four groups of coiled heat exchanger tubes 83 are uniformly arranged in cylinder 84,
The top of cylinder 84 is provided with upper cover 86, and the bottom of cylinder 84 is provided with low head 87, and low head 87 is flat underside, water-bath type ammonia
Change device escape pipe 85 to be connected with the import of ammonia dashpot 28, the outlet of ammonia dashpot 28 is connected with ammonia/air mixer 27, ammonia
The tunnel of gas/air mixer 27 1 is connected with dilution ammonia blower fan 26, and another way is connected with ammonia imports 4, and exhanst gas outlet 20 passes through
Pipeline is connected with desulfurizing tower air intake 29, and the lower sides of desulfurizing tower air intake 29 are provided with pH detection controllers 38, pH detection controls
For instrument 38 processed by controlling cable to be connected with desulfurization pump 39, the bottom of desulfurizing tower air intake 29 connects aeration displacement reaction tank by pipeline
47, aeration displacement reaction tank 47 connects sedimentation basin 50, and aeration displacement reaction tank 47 side is provided with roots blower 49, and opposite side is set
Calcium hydroxide feed bin 43 is equipped with, calcium hydroxide feed bin 43 connects discharger 44, and discharger 44 connects electron helical scale 45, electronics spiral shell
Revolve scale 45 and connect frequency conversion rotary feeder 46, the connection aeration displacement reaction tank 47 of frequency conversion rotary feeder 46, aeration displacement reaction
The pool side of pond 47 is provided with aeration displacement reaction tank pH detection controllers 48, and aeration displacement reaction tank pH detection controllers 48 pass through control
Cable processed is connected with frequency conversion rotary feeder 46, and sedimentation basin 50 connects regulating reservoir 55, and the bottom of sedimentation basin 50 is provided with outside waste liquid and arranged
Pipeline 51, the opposite side of regulating reservoir 55 are provided with sodium hydroxide storage tank 53, and the pool side of regulating reservoir 55 is provided with regulating reservoir pH detection controls
Instrument 54, regulating reservoir pH detect controller 54 by controlling cable to be connected with electric charging valve 52, and the top of desulfurizing tower air intake 29 is set
Nozzle 36 is equipped with, the top of nozzle 36 is provided with demister 31, and the top of demister 31 is provided with exhanst gas outlet 32, and exhanst gas outlet 32 connects
Dehumidifying purifying column 41 is connect, damp proof air cleaner 40 is provided with the purifying column 41 that dehumidifies, dehumidifying purifying column 41 bottom, which is provided with, removes
The outer discharge pipe 42 of wet purification tower waste liquid, nozzle 36 is connected through the inwall of desulfurizing tower 30 with the hose adapter 35 of the outer wall of desulfurizing tower 30, soft
Adapter 35 is connected with shower 33, is easy for installing using the purpose of hose adapter 35, and repair demolition is convenient, and shower 33 passes through support
34 are fixed on the outer wall of desulfurizing tower 30, and shower 33 is connected with feed tube 37, and feed tube 37 is connected with desulfurization pump 39, desulfurization pump 39
Connect regulating reservoir 55, the wet electrical dust precipitator 6, including high-tension electricity feedway 61, the internal housing 613 for cavity, housing
Air inlet 65, gas outlet 67, tank 66 are provided with 613, tank 66 is located at the bottom of housing 613, dust is provided with housing 613
Pole 63, discharge electrode 62, top cleaning device 68, bottom cleaning device 64, air inlet 65 is located at the bottom of housing 613, except wet purification
The exhanst gas outlet of tower 41 is connected by pipeline with air inlet 65, and gas outlet 67 is located at the top of housing 613, and top cleaning device 68 is set
In the top of dust collecting electrode 63, bottom cleaning device 64 is arranged on the lower section of dust collecting electrode 63, top cleaning device 68, bottom cleaning dress
64 are put by pipeline connecting valve 69, water pump 612, by the upper and lower of dust collecting electrode 63 set respectively top cleaning device 68,
Bottom cleaning device 64, can greatly improve the efficiency of dust collection of wet electrical dust precipitator 6, and the discharge electrode 62 is suspended to dust collecting electrode 63
Channel center, be provided with spray point 614 on the discharge electrode 62, the both ends of discharge electrode 62 respectively with discharge electrode support 610
Connected with discharge electrode fixed mount 611, the discharge electrode support 610 is located at the top of discharge electrode 62, the discharge electrode fixed mount 611
In the bottom of discharge electrode 62.
The course of work of the present invention：
500t/d domestic waste incinerations 23, exhaust gas volumn 14~15 × 104m3/ h, the temperature in the burner hearth of incinerator 23 are 850
DEG C~1100 DEG C, SO2800~1500mg/Nm of concentration3, HCL 800~1200mg/Nm of concentration3, NOx concentration 600~
900mg/Nm3, 20~30g/Nm of dust concentration3, the oxygen content 8%~12% of flue gas, the water capacity 15%~25% of flue gas；
The flue gas of incinerator 23 enters sack cleaner 24 by the suction function of blower fan 25, and the ash-laden gas of incinerator 23 is risen
To the effect of dedusting, prevent dust from entering adsorptive reactor 1 and producing blocking, by sack cleaner 24 the flue gas of incinerator 23 by
The effect of blower fan 25 enters adsorptive reactor 1；
Flue gas enters the desulfurization section of adsorptive reactor 1 from the gas approach 21 of adsorptive reactor 1, with falling from the top down
Activated coke cross-flow contact, the preliminary SO removed in flue gas2, bioxin and mercury, flue gas is by desulfurization section with leading to from ammonia imports 4
The ammonia entered mixes in flue gas ammonia mixing chamber 19, flows up and is horizontally through denitration section, denitrating flue gas is realized, after denitration
Flue gas is discharged from the exhanst gas outlet 20 of adsorptive reactor 1；
Liquefied ammonia is transported to liquid ammonia storage tank by tank car, and the liquefied ammonia of output becomes ammonia after water-bath type ammonia gasifier 8, sent
It is standby to ammonia dashpot 28；Ammonia in ammonia dashpot 28 is sent into ammonia/air mixer 27 after decompression, with from
After the air mixing for diluting ammonia blower fan 26, ammonia imports 4 are entered by pipeline, subsequently into adsorptive reactor 1, when flue gas stream
During through adsorptive reactor 1, chemically react, NOx is by the reduction of selectivity：
4NH3+4NO+O2→4N2+6H2O
8NH3+6NO2→7N2+12H2O
NOx is reduced to N in adsorptive reactor 12And water；
Desulfurizing tower 30, cigarette from bottom to top are entered by the effect of blower fan 25 by the flue gas of incinerator 23 of adsorptive reactor 1
Gas, in the nozzle 36 by being laid in the middle part of desulfurizing tower 30, due to gas-liquid counter current, make the doctor solution that nozzle 36 sprays in boiling
State, gas-liquid is set fully to contact, flue gas removes water smoke, the exiting flue gas of demister 31 after the spray of nozzle 36, by demister 31
The concentration of middle droplet is less than 75mg/m3, prevent water droplet from corroding, then through damp proof air cleaner 40 in the purifying column 41 that dehumidifies, collect
Fine solid particle in gas, air is purified, further removes water droplet, by flowing out dehumidifying purifying column 41 except the flue gas of wet purification,
Into wet electrical dust precipitator 6, finally it is discharged into air；
Using NaOH as desulfurization absorbent, desulfurizing agent is squeezed into desulfurizing tower 30 through desulfurization pump 39 and fully contacted with flue gas,
The sulfur dioxide in flue gas is set to carry out reaction generation Na with desulfurizing agent NaOH2SO3, from the Na of the discharge of desulfurizing tower 302SO3Solution passes through
Aerating oxidation is crossed, generates Na2SO4, by adding the precipitation of regeneration and solid by-product of the calcium hydroxide to absorbing liquid, through overexposure
Gas and sodium, the mixed liquor of calcium displacement flow into sedimentation basin 50, the supernatant after precipitating Ash Water Separator, are sent into regulating reservoir 55, are adjusting
Save in pond 55, when pH value reduces to a certain extent, the pH value in the measure regulating reservoir 55 of controller 54 is detected by regulating reservoir pH
Afterwards, control electric charging valve 52 that the sodium hydroxide in sodium hydroxide storage tank 53 is continuously replenished to add in regulating reservoir 55, in desulfurization
In tower 30, when pH value reduces to a certain extent, after the pH value that controller 38 is determined in desulfurizing tower 30 is detected by pH, pass through control
Desulfurization pump 39 processed adds desulfurizing agent into desulfurizing tower 30, so circulation, and the heavy ash in sedimentation basin 50 is periodically removed, and picks up outward transport；
Calcium hydroxide is formed by calcium hydroxide feed bin 43, discharger 44, electron helical scale 45, frequency conversion rotary feeder 46
Conveying device, in aeration displacement reaction tank 47, when pH value reduces to a certain extent, by being aerated the pH detections of displacement reaction tank
After pH value in the measure aeration displacement reaction tank 47 of controller 48, after the Weighing of electron helical scale 45, rotated by frequency conversion
Batcher 46, the pH value in reaction tank 47 is replaced according to aeration, the conveying capacity of calcium hydroxide, hydrogen are adjusted with the mode for changing rotating speed
Calcium oxide is sent into aeration displacement reaction tank 47.
Desulfurization chemical reaction formula：
SO is absorbed in absorption tower2：
2NaOH+SO2→Na2SO3+H2O
Na2SO3+SO2+H2O→2NaHSO3
SO will be absorbed2Absorbing liquid deliver to aeration displacement reaction tank 47, carry out the oxidation of inferior sulfate radical, absorbing liquid again
Raw and solid by-product precipitation.
Air is blasted by roots blower 49, oxidation reaction occurs in aeration replaces reaction tank 47.
Flue gas enters wet electrical dust precipitator 6 from the top down, and flue gas is molten to fine particle and gas by wet electrical dust precipitator 6
Glue removal efficiency is 99~99.99%, realizes the efficient removal of combined pollutant in flue gas, reduces environmental pollution, is met
The atmospheric emission standard improved constantly.
Claims (1)
1. a kind of incinerator smoke desulfuring and denitrifying apparatus, including incinerator, sack cleaner, blower fan, adsorptive reactor, water-bath type
Ammonia gasifier, desulfurizing tower, dehumidifying purifying column, wet electrical dust precipitator, it is characterised in that：The incinerator connects cloth bag by pipeline
Deduster, blower fan, adsorptive reactor, water-bath type ammonia gasifier, desulfurizing tower, dehumidifying purifying column, wet electrical dust precipitator, the absorption
Reactor is that the double sections of composite bed are cross-flow moving bed, and the cross section of the adsorptive reactor is rectangle, generally approximate cuboid, institute
State adsorptive reactor to be made up of for two sections with desulfurization section denitration section, the denitration section includes denitration section collection chamber, denitration region and denitration
Section sub-air chamber, the desulfurization section include desulfurization section collection chamber, desulfurization zone and desulfurization section sub-air chamber, the denitration region and the desulfurization
Area is connected by being arranged on two intersegmental blanking channels, and a cigarette is provided between the denitration section sub-air chamber and desulfurization section collection chamber
Gas ammonia gas mixing chamber, the desulfurization section sub-air chamber are connected with a gas approach, and gas approach is connected with fan outlet, the denitration
Section collection chamber connects with an exhanst gas outlet, and the desulfurization section collection chamber divides gas by a flue gas ammonia mixing chamber and the denitration section
Room connects, and the flue gas ammonia mixing chamber connects with an ammonia imports, sets an activated coke to be layered grid in the desulfurization zone, will
The desulfurization is distinguished into preceding active focus layer and rear active focus layer, and the preceding active focus layer and rear active focus layer lower part Dui Ying not set
Put preceding discharging opening and rear discharging opening, the preceding discharging opening and rear discharging opening by the different blanking flow of Valve controlling activated coke,
Make preceding active focus layer of the activated coke particle in desulfurization zone and the speed that rear active focus layer moves down different with the residence time, it is preceding
Discharging opening connects mixing blanking bin with rear discharging opening, sets one to be used for clearly between the denitration section and desulfurization section of the adsorptive reactor
The cleaning passage of the desulfurization zone and the denitration region active coke is managed, adsorptive reactor storage is provided with above the adsorptive reactor
Batch can, the water-bath type ammonia gasifier, including cylinder, coiled heat exchanger tube, water-bath type ammonia gasifier feed tube and water-bath type ammonia
Gasifier escape pipe, bottom is provided with electric heater in cylinder, and lower end is provided with water-bath type ammonia gasifier feed tube, cylinder on the left of cylinder
Right side upper end is provided with water-bath type ammonia gasifier escape pipe, and four groups of coiled heat exchanger tubes are uniformly arranged in cylinder, are pacified at the top of cylinder
Equipped with upper cover, cylinder body bottom is provided with low head, and low head is flat underside, and water-bath type ammonia gasifier escape pipe buffers with ammonia
Groove import is connected, and the outlet of ammonia dashpot is connected with ammonia/air mixer, and ammonia/air mixer is all the way with diluting ammonia
Blower fan is connected, and another way is connected with ammonia imports, and exhanst gas outlet is connected by pipeline with desulfurizing tower air intake, desulfurizing tower air intake
Lower sides are provided with pH detection controllers, and pH detects controller by controlling cable to be connected with desulfurization pump, desulfurizing tower air intake
Bottom connects aeration displacement reaction tank by pipeline, and aeration displacement reaction tank connection sedimentation basin, aeration displacement reaction tank side is set
Roots blower is equipped with, opposite side is provided with calcium hydroxide feed bin, calcium hydroxide feed bin connection discharger, discharger connection electronics spiral shell
Scale, electron helical scale connection frequency conversion rotary feeder are revolved, frequency conversion rotary feeder connection aeration replaces reaction tank, and aeration displacement is anti-
Pond pool side is answered to be provided with aeration displacement reaction tank pH detection controllers, aeration displacement reaction tank pH detection controllers are by controlling electricity
Cable is connected with frequency conversion rotary feeder, and sedimentation basin connection regulating reservoir, sedimentation basin bottom is provided with the outer discharge pipe of waste liquid, and regulating reservoir is another
Side is provided with sodium hydroxide storage tank, and regulating reservoir pool side is provided with regulating reservoir pH detection controllers, regulating reservoir pH detection controllers
By controlling cable to be connected with electric charging valve, desulfurizing tower air intake top is provided with nozzle, and nozzle top is provided with demister,
Demister top is provided with exhanst gas outlet, and exhanst gas outlet connects dehumidifying purifying column, and anti-humid air mistake is provided with the purifying column that dehumidifies
Filter, the purification tower bottom that dehumidifies are provided with the outer discharge pipe of dehumidifying purifying column waste liquid, and nozzle is passed through outside desulfurization inner wall of tower and desulfurizing tower
The hose adapter connection of wall, hose adapter are connected with shower, are easy for installing using hose adapter purpose, and repair demolition is convenient, spray
Pipe is fixed on desulfurizing tower outer wall by support, and shower is connected with feed tube, and feed tube is connected with desulfurization pump, the connection of desulfurization pump
Regulating reservoir, the wet electrical dust precipitator, including high-tension electricity feedway, it is internal be cavity housing, be provided with air inlet on housing
Mouth, gas outlet, tank, tank are located at housing bottom, and it is clear that dust collecting electrode, discharge electrode, top cleaning device, bottom are provided with housing
Cleaning device, air inlet are located at lower housing portion, and dehumidifying purifying column exhanst gas outlet is connected by pipeline with air inlet, and gas outlet is located at shell
At the top of body, top cleaning device is arranged on the top of dust collecting electrode, and bottom cleaning device is arranged on the lower section of dust collecting electrode, top cleaning
Device, bottom cleaning device set top to clean respectively by pipeline connecting valve, water pump by the upper and lower in dust collecting electrode
Device, bottom cleaning device, can greatly improve the efficiency of dust collection of wet electrical dust precipitator, and the discharge electrode is suspended to dust collecting electrode
Channel center, spray point is provided with the discharge electrode, the discharge electrode both ends are fixed with discharge electrode support and discharge electrode respectively
Frame connects, and the discharge electrode support is located at discharge electrode top, and the discharge electrode fixed mount is located at discharge electrode bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710747122.0A CN107569937A (en) | 2017-08-21 | 2017-08-21 | A kind of incinerator smoke desulfuring and denitrifying apparatus |
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| CN201710747122.0A CN107569937A (en) | 2017-08-21 | 2017-08-21 | A kind of incinerator smoke desulfuring and denitrifying apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464906A (en) * | 2018-12-07 | 2019-03-15 | 铜陵泰富特种材料有限公司 | The desulfurization denitration method of coke oven flue gas |
| CN110221016A (en) * | 2018-03-02 | 2019-09-10 | 南京理工大学 | Perfluorethyl isopropyl ketone extinguishing chemical extinguishing concentration test device and its test method |
-
2017
- 2017-08-21 CN CN201710747122.0A patent/CN107569937A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221016A (en) * | 2018-03-02 | 2019-09-10 | 南京理工大学 | Perfluorethyl isopropyl ketone extinguishing chemical extinguishing concentration test device and its test method |
| CN109464906A (en) * | 2018-12-07 | 2019-03-15 | 铜陵泰富特种材料有限公司 | The desulfurization denitration method of coke oven flue gas |
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