CN206334518U - A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas - Google Patents
A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas Download PDFInfo
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- CN206334518U CN206334518U CN201621426188.7U CN201621426188U CN206334518U CN 206334518 U CN206334518 U CN 206334518U CN 201621426188 U CN201621426188 U CN 201621426188U CN 206334518 U CN206334518 U CN 206334518U
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- roasting
- flue gas
- stove
- reactor
- aluminium oxide
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 51
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000003546 flue gas Substances 0.000 title claims abstract description 47
- 239000000725 suspension Substances 0.000 title claims abstract description 19
- 239000003814 drug Substances 0.000 claims abstract description 34
- 229940079593 drug Drugs 0.000 claims abstract description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 30
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 47
- 238000001914 filtration Methods 0.000 claims description 18
- 239000004202 carbamide Substances 0.000 claims description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 15
- 239000004071 soot Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000005243 fluidization Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000003186 pharmaceutical solution Substances 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 12
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 27
- 229910002089 NOx Inorganic materials 0.000 description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000004176 ammonification Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical group S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000012089 stop solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas, including being calcined main stove, the side for being calcined main stove is connected to cooling cyclone separator, opposite side is connected to the secondary stove of roasting, the hot-air of cooling cyclone separator discharge respectively enters tie point pipe and the second bypass duct, tie point pipe is connected to the bottom for being calcined main stove, second branch road pipe end is connected with tuyere, tuyere is arranged at the middle part for being calcined main stove, second bypass duct is provided with shutter motor-driven valve, atomizer is additionally provided with above tuyere, atomizer is connected to compressed air hose and liquid-feeding tube, for adding the main reaction in furnace of roasting for drug solns, the secondary stove rear end of roasting is connected with pre- hot cyclone separator, its discharge pipe is connected to reactor, reactor is built with catalyst, for supplying the high-temperature flue gas containing ammonia in denitration in reactor.Above-mentioned denitrification apparatus denitration rate is high, and NOx content in the flue gas for be discharged into air can be greatly lowered, and reduces aluminum oxide heat dissipation, reduces cost.
Description
Technical field
The utility model belongs to aluminum oxide industry technology and field of environment engineering, more particularly to a kind of aluminum oxide suspension roasting
Kiln gas denitrification apparatus.
Background technology
Industry is prepared in aluminum oxide, aluminium hydroxide is provided in the thermal source needed for roasting process by fuel combustion, fuel combustion
During burning, the N in fuel2With the N in air2Oxidation produces NOx at high temperature, and NOx is primarily referred to as NO, NO2And N2O3Etc. nitrogen oxidation
Thing.NOx harmfulness is not only in that it is sour gas, and NO can significantly damage the ozone layer, NO and NO2It is also simultaneously greenhouse
Gas, NO and hydrocarbon react under effect of sunlight causes photochemical pollution, to the toxic effect of human body.
300~400mg/Nm of NOx content in the flue gas that current roaster is produced3, as Environmental administers more next
More strictly it is necessary to being removed to the NOx in flue gas.Therefore, it is necessary to develop a kind of denitrification apparatus, aluminum oxide is not being influenceed
On the premise of amount, effective improvement is carried out to NOx.
Utility model content
The problem of existing for prior art, the utility model, which provides one kind, to carry out denitration process to flue gas, reduce cigarette
The Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas for the amount of nitrogen oxides that gas is discharged into air.
To achieve these goals, the utility model is adopted the following technical scheme that：
A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas, including it is calcined main stove, the side connection of the main stove of roasting
In cooling cyclone separator, opposite side is connected to the secondary stove of roasting, the hot-air shunting difference of the cooling cyclone separator discharge
Into tie point pipe and the second bypass duct, the tie point pipe is connected to the bottom of the main stove of roasting, described second
Road pipe end is connected with tuyere, and the tuyere is arranged at the middle part of the main stove of roasting, and second bypass duct is provided with blinds
Window motor-driven valve, the main stove of roasting is additionally provided with atomizer above the tuyere, and it is empty that the atomizer is connected to compression
Tracheae and liquid-feeding tube, for adding the main reaction in furnace of roasting for drug solns, the secondary stove rear end of the roasting is connected with preheating rotation
Wind separator, the discharge pipe of the pre- hot cyclone separator is connected to reactor, and the reactor is built with catalyst, for supplying
High-temperature flue gas containing ammonia is connected to drier in denitration in the reactor, the bottom of the reactor.
Further, the tuyere or/and the atomizer are provided with multiple, and circular is arranged at the roasting main stove week
Enclose, and be communicated in the main furnace interior of roasting.
Further, the liquid-feeding tube is connected to measuring pump, and the measuring pump is connected to solution reservoir, and the solution reservoir connects
Filtering tank is connected to, the filtering tank is connected to solution pump, and the solution pump is connected to molten drug slot, and the molten drug slot is used to prepare
Drug solns simultaneously supply the liquid-feeding tube.
Further, the first valve group, the solution reservoir and the metering are provided between the measuring pump and the liquid-feeding tube
Between pump be provided with the second valve group, between the filtering tank and the solution pump be provided with the 3rd valve group, the solution pump with it is described molten
The 4th valve group is provided between drug slot.
Further, agitator is provided with the molten drug slot.
Further, the molten thing of institute is urea in the molten drug slot.
Further, dashpot is connected with below the secondary stove of the roasting, for entering for the aluminum oxide in the secondary stove of the roasting
Enter to extend the reaction time, the dashpot is connected to fluidisation airduct.
Further, the reactor is connected with multiple acoustic wave soot blowers, and the acoustic wave soot blower is connected to air reservoir.
Further, differential manometer is provided between the import and export of the reactor.
Further, the reactor outlet is connected with monitoring nitrogen oxide instrument and ammonia monitor.
The beneficial effects of the utility model：
Part hot-air is shunted by adjusting the aperture of shutter motor-driven valve, tie point pipe can be reduced and enter roasting master
The air capacity of furnace bottom, reaches few oxygen burning, reduces the NOx that the main furnace bottom burning of roasting is produced, the flue gas containing NOx is with oxygen
Change aluminium powder in the main stove of roasting to rise, the high-temperature flue gas of rising will come from the drug solns decomposition ammonification of liquid-feeding tube, high-temperature flue gas
In the reaction of NOx and ammonia produce nitrogen and vapor, denitration can be carried out.And the high-temperature flue gas containing surplus ammonia enters reaction
During device, react generation nitrogen and vapor, further denitration in the presence of catalyst in reactor.Above-mentioned denitrification apparatus
Denitration rate is high, and NOx content in the flue gas for be discharged into air can be greatly lowered in denitration twice, and reduces aluminum oxide heat dissipation, drop
Low cost.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas；
In figure, 1-cooling cyclone separator, 2-tie point pipe, the 3-the second bypass duct, 4-shutter motor-driven valve,
5-tuyere, the main stove of 6-roasting, 7-liquid-feeding tube, 8-atomizer, 9-compressed air hose, the 10-the first valve group, 11-metering
Pump, the 12-the second valve group, 13-solution reservoir, 14-filtering tank, the 15-the three valve group, 16-solution pump, the 17-the four valve group,
18-molten drug slot, 19-fluidisation airduct, 20-dashpot, 21-secondary stoves of roasting, 22-pre- hot cyclone separator, 23-air-out
Pipe, 24-reactor, 25-acoustic wave soot blower, 26-air reservoir, 27-catalyst, 28-drier, 29-differential pressure liquid level
Meter, 30-differential manometer, 31-monitoring nitrogen oxide instrument, 32-ammonia monitor.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
Such as Fig. 1, the utility model provides a kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas, including is calcined main stove 6, roasting
The side for burning main stove 6 is connected to cooling cyclone separator 1, and opposite side is connected to the secondary stove 21 of roasting, and cooling cyclone separator 1 is discharged
Hot-air respectively enter the bypass duct 3 of tie point pipe 2 and second, tie point pipe 2 is connected to the bottom for being calcined main stove 6
Portion so that hot-air enters to be calcined at the combustion chamber V19 of the main bottom of stove 6 provides air for the roasting of aluminium hydroxide.Second branch road
Pipe 3 is arranged at the top of tie point pipe 2, is connected to the middle part for being calcined main stove 6, the end of the second bypass duct 3 is connected with tuyere 5,
Tuyere 5 is communicated in inside the main stove 6 of roasting, and hot-air is provided to be calcined the main middle part of stove 6.Tuyere 5 is provided with multiple, and circular is arranged on
It is calcined around main stove 6, in the present embodiment, tuyere 5 is provided with three.Second bypass duct 3 is provided with shutter motor-driven valve 4, passes through
Adjust the aperture of shutter motor-driven valve 4 to adjust the quantity of hot air in the second bypass duct 3, so that adjusting bottom enters tie point
Air capacity in the supply lower combustion chamber of pipe 2 V19, reaches few oxygen burning, reduces NOx in the flue gas of roasting generation, from source
Upper reduction NOx generation.
It is calcined main stove 6 and is additionally provided with atomizer 8 in the top of tuyere 5, atomizer 8 is connected to compressed air hose 9 simultaneously
With liquid-feeding tube 7, compressed air hose 9 is that atomizer 8 provides compressed air, and liquid-feeding tube 7 is used to add the main stove 6 of roasting for drug solns
It is interior to be reacted with combustion product gases therein.Atomizer 8 is provided with multiple, and circular is arranged at around the main stove 6 of roasting, and is communicated in roasting
Burn inside main stove 6, the drug solns for being added liquid-feeding tube 7 by atomizer 8 are atomized.Liquid-feeding tube 7 is connected to measuring pump 11, metering
The first valve group 10 is provided between pump 11 and the liquid-feeding tube 7, measuring pump 11 is connected to solution reservoir 13, solution reservoir 13 and metering
The second valve group 12 is provided between pump 11, solution reservoir 13 is connected to filtering tank 14, and filtering tank 14 is connected to solution pump 16, solution pump
The 3rd valve group 15 is provided between 16 and filtering tank 14, solution pump 16 is connected to molten drug slot 18, between molten drug slot 18 and solution pump 16
Provided with the 4th valve group 17, molten drug slot 18 is used for Pharmaceutical solutions and supplies liquid-feeding tube 7.By controlling above-mentioned first valve group 10,
The path of supply liquid-feeding tube 7 can be cut off or be opened to two valve groups 12, the 3rd valve group 15 or the 4th valve group 17.In wherein molten drug slot 18
Provided with agitator, in the present embodiment, the molten thing of institute is urea in molten drug slot 18, and urea is configured to concentration in molten drug slot 18 and is
15%-20% drug solns, in other embodiments or ammoniacal liquor or other solution, can decompose ammonification by high-temperature flue gas
.Drug solns are pumped into filtering in filtering tank 14 by solution pump 16, and filtering tank 14 filters the water-insoluble in drug solns, filtering tank
Provided with automatic anti-washer in 14, the impurity accumulated in periodic cleaning filter core.Drug solns after filtering enter in solution reservoir 13,
Solution reservoir 13 is provided with pressure difference liquid level gauge 29, stops after liquid level reach a certain height the high limit signal for obtaining pressure difference liquid level gauge 29
Only solution pump 16.Reached by the regulating liquid inventory of measuring pump 11 and enter atomizer 8 after certain value, by the mist of atomizer 8
Enter to be calcined in the main furnace chamber of stove 6 after change and participate in the purpose that series of chemical reaches removing NOx.When liquid in solution reservoir 13
When position is less than certain value, lower bound signal is sent to solution pump 16 by pressure difference liquid level gauge 29, solution pump 16 continues to solution reservoir 13
Drug solns are inside pumped into, solution pump 16 stops when liquid level reaches maximum limit in solution reservoir 13, repeat this step, can be molten
The sustainable supply drug solns of liquid storage tank 13.The urea liquid of atomization is being calcined the flue gas decomposition ammonification that chance temperature in main stove 6 is 980 DEG C
Gas, ammonia and the NOx reactions generation nitrogen and vapor in flue gas, so that denitration.
The rear end for being calcined main stove 6 is connected to the secondary stove 21 of roasting, and the secondary lower section of stove 21 of roasting is connected with dashpot 20, dashpot 20
It is connected to fluidisation airduct 19, the outlet of dashpot 20 connection cooling system.It is calcined in main stove 6 and forms oxidation after aluminium hydroxide burning
Aluminium, aluminum oxide is calcined as air-flow enters in the secondary stove 21 of roasting, and being calcined sintering temperature in main stove 6 can reduce, and aluminum oxide is in roasting
Enter after being calcined in secondary stove 21 in dashpot 20 and continue to react, extend the reaction time of aluminum oxide by dashpot 20, can either
Reach original roasting effect, additionally it is possible to reduce sintering temperature, aluminum oxide heat dissipation is reduced, needed for the heat dissipation deduction denitration of saving
Cost after also have and save, aluminum oxide per ton saves 6 yuan, therefore reduces cost.
The secondary rear end of stove 21 of roasting is connected with pre- hot cyclone separator 22, and the discharge pipe 23 of pre- hot cyclone separator 22 is connected to
Reactor 24, reactor 24 is built with catalyst 27, for supplying the high-temperature flue gas containing ammonia in denitration in reactor 24.Reaction
The bottom of device 24 is connected to drier 28, in the present embodiment, and drier 28 is venturi drier.It is calcined main stove 6, roasting pair
The high-temperature flue gas containing surplus ammonia, NOx that stove 21 and pre- hot cyclone separator 22 are excluded enters reactor 24, in catalyst 27
Effect is lower to react with air：
4NO+4NH3+O2→4N2+6H2O
4NO2+2NH3+O2→3N2+6H2O
Generate nitrogen and vapor, further denitration.By above-mentioned denitration twice, total denitration rate reaches 75%-90%, row
Enter NOx content in the flue gas of air and be reduced to 50-100mg/Nm3.Multiple acoustic wave soot blowers 25, sound are also associated with reactor 24
Ripple dust remover 25 is connected to air reservoir 26, and due to containing aluminum oxide dust in flue gas, long time integration can blocking catalyst 27
Gap passage, the aluminum oxide dust in the gap of catalyst 27 is accumulated in using the periodic cleaning of acoustic wave soot blower 25, in case influence is urged
The activity of agent 27 and increase SR.Differential manometer 30 is provided between the import and export of reactor 24, is monitored instead by the differential manometer 30
The laying dust situation in device 24 is answered, when the inlet outlet pressure differential of reactor 24 increases to certain value, it is clear that differential manometer 30 issues instructions to sound wave
Grey device 25 carries out deashing, and pressure difference stops deashing when being reduced to initial value, repeat this step, the laying dust in reactor 24 is carried out clear
Remove.The outlet of reactor 24 is connected with monitoring nitrogen oxide instrument 31 and ammonia monitor 32, and the ammonia in flue gas nitrogen after monitoring denitration contains
Amount, by monitoring numerical value herein, to adjust the drug solns addition for being calcined liquid-feeding tube 7 in main stove 6, and adds the main stove of roasting
The hot-air content of 6 bottoms so that denitration effect reaches best.
Early-stage preparations are first carried out when using：Added into molten drug slot 18 after quantitative hot water, start the stirring of molten drug slot 18
Device, urea is added into molten drug slot 18, and solution is configured into the urea liquid that concentration is 15%-20%, and the urea prepared is molten
Liquid enters filtering tank 14 after the 4th valve group 17, the valve group 15 of solution pump 16 and the 3rd, and filtering tank 14 is filtered in urea liquid
Water-insoluble, the urea liquid after filtering is sent to solution reservoir 13, detects molten by the pressure difference liquid level gauge 29 on solution reservoir 13
Urea capacity in liquid storage tank 13.When liquid level reach a certain height and obtains the high limit signal of pressure difference liquid level gauge 29 in solution reservoir 13
Stop solution pump 16 afterwards, when liquid level is less than certain value in solution reservoir 13, lower bound signal is sent to molten by pressure difference liquid level gauge 29
Liquid pump 16, solution pump 16 continues to be pumped into urea liquid into solution reservoir 13, when liquid level reaches maximum limit in solution filling 13
Solution pump 16 stops, and repeats this step, can persistently provide urea liquid for liquid-feeding tube 7.
During production, the normally-open main stove 6 of roasting and the secondary stove 21 of roasting be necessarily calcined backward throwing in main stove 6 when temperature reach
Aluminum oxide is hydrogenated with, aluminium hydroxide is after the interior roasting of the main stove 6 of roasting forms aluminum oxide, as flue gas enters gas-solid in roasting pair stove 21
Separation, the fluidisation airduct 19 of the bottom of dashpot 20 is opened when aluminum oxide 21 bottom of stove secondary via roasting.When yield reaches stabilization
Afterwards, the aperture of regulation shutter motor-driven valve 4, the hot-air shunting part discharged by cooling cyclone separator 1, which enters, is calcined main stove 6
Middle part, control enters the air capacity being calcined in the main bottom combustion chamber V19 of stove 6, reaches few oxygen burning, makes NOx in baking flue gas
Content is reduced.
When aluminum oxide suspension roasting yield normally after start the first valve group 10, the second valve group 12 and measuring pump 11, regulation stream
Amount reaches and the urea liquid in solution reservoir 13 is added into liquid-feeding tube 7 after certain value, and enters atomizer 8, urea liquid and pressure
Contracting air is atomization in atomizer 8, and the urea liquid of atomization enters chance temperature in the main stove 6 of roasting and decomposed for 980 DEG C of flue gas
Into ammonia, ammonia and NOx reactions generation nitrogen and vapor in flue gas reach the purpose of denitration.
Enter after the reacted fired main stove 6 of flue gas, the secondary stove 21 of roasting and separated in preheating cyclone separator 22, after separation
High-temperature flue gas containing ammonia enters in reactor 24 through discharge pipe 23, and react generation nitrogen in the presence of catalyst 27
And vapor, further denitration, flue gas after denitration enters drier 28.It is logical in the gap of catalyst 27 through after a period of time
A certain amount of aluminum oxide dust is have accumulated in road, differential manometer 30 monitors that the pressure difference that reactor 24 is imported and exported is reached after certain value,
Send instruction and open the progress deashing of acoustic wave soot blower 25, so that the aluminum oxide dust being accumulated in the gap of catalyst 27 is cleaned out,
In order to avoid the activity of influence catalyst 27 and increase SR.
The utility model reaches 75%-90%, is discharged into NOx content in the flue gas of air by denitration twice, total denitration rate
It is reduced to 50-100mg/Nm3, NOx content in the flue gas for be discharged into air is considerably reduced, and due to reducing sintering temperature,
Aluminum oxide heat consumption is reduced, so as to reduce cost.
Above example is only unrestricted to illustrate the technical solution of the utility model, although with reference to preferred embodiment pair
The utility model is described in detail, it will be appreciated by those skilled in the art that can enter to the technical solution of the utility model
Row modification or equivalent, without departing from the objective and scope of the technical program, it all should cover in power of the present utility model
In sharp claimed range.
Claims (10)
1. a kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas, it is characterised in that including：It is calcined main stove, the main stove of roasting
Side be connected to cooling cyclone separator, opposite side is connected to the secondary stove of roasting, and the heat of the cooling cyclone separator discharge is empty
Qi leel stream respectively enters tie point pipe and the second bypass duct, and the tie point pipe is connected to the bottom of the main stove of roasting,
The second branch road pipe end is connected with tuyere, and the tuyere is arranged at the middle part of the main stove of roasting, second bypass duct
Shutter motor-driven valve is provided with, the main stove of roasting is additionally provided with atomizer above the tuyere, and the atomizer connects
Compressed air hose and liquid-feeding tube are connected to, for adding the main reaction in furnace of roasting for drug solns, the secondary stove rear end of the roasting connects
It is connected to pre- hot cyclone separator, the discharge pipe of the pre- hot cyclone separator is connected to reactor, the reactor is built with urging
Agent, for, in denitration in the reactor, the bottom of the reactor to be connected to drier for the high-temperature flue gas containing ammonia.
2. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 1, it is characterised in that：The tuyere or/
It is provided with multiple with the atomizer, circular is arranged at around the main stove of roasting, and is communicated in the main furnace interior of roasting.
3. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 1, it is characterised in that：The liquid-feeding tube connects
Measuring pump is connected to, the measuring pump is connected to solution reservoir, and the solution reservoir is connected to filtering tank, and the filtering tank is connected to
Solution pump, the solution pump is connected to molten drug slot, and the molten drug slot is used for Pharmaceutical solutions and supplies the liquid-feeding tube.
4. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 3, it is characterised in that：The measuring pump with
The first valve group is provided between the liquid-feeding tube, the second valve group, the filtering are provided between the solution reservoir and the measuring pump
The 3rd valve group is provided between tank and the solution pump, the 4th valve group is provided between the solution pump and the molten drug slot.
5. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 3, it is characterised in that：In the molten drug slot
Provided with agitator.
6. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 3, it is characterised in that：In the molten drug slot
The molten thing of institute is urea.
7. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 1, it is characterised in that：The secondary stove of roasting
Lower section be connected with dashpot, for entering for the aluminum oxide in the secondary stove of roasting to extend the reaction time, the dashpot
It is connected to fluidisation airduct.
8. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 1, it is characterised in that：The reactor connects
Multiple acoustic wave soot blowers are connected to, the acoustic wave soot blower is connected to air reservoir.
9. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 1, it is characterised in that：The reactor
Differential manometer is provided between import and export.
10. Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas according to claim 1, it is characterised in that：The reactor
Outlet is connected with monitoring nitrogen oxide instrument and ammonia monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426188.7U CN206334518U (en) | 2016-12-23 | 2016-12-23 | A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426188.7U CN206334518U (en) | 2016-12-23 | 2016-12-23 | A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206334518U true CN206334518U (en) | 2017-07-18 |
Family
ID=59301588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621426188.7U Withdrawn - After Issue CN206334518U (en) | 2016-12-23 | 2016-12-23 | A kind of Suspension Roaster for Aluminium Oxide equipment for denitrifying flue gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN206334518U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621752A (en) * | 2016-12-23 | 2017-05-10 | 沈阳鑫博工业技术股份有限公司 | Fume denitration device for aluminum oxide suspension calcinator and use method thereof |
| CN108178173A (en) * | 2018-01-04 | 2018-06-19 | 清华大学 | The roasting system and method for a kind of aluminium hydroxide |
| CN108325357A (en) * | 2018-03-02 | 2018-07-27 | 国电环境保护研究院有限公司 | A kind of the supply adjusting method and SCR system of reducing agent |
-
2016
- 2016-12-23 CN CN201621426188.7U patent/CN206334518U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621752A (en) * | 2016-12-23 | 2017-05-10 | 沈阳鑫博工业技术股份有限公司 | Fume denitration device for aluminum oxide suspension calcinator and use method thereof |
| CN106621752B (en) * | 2016-12-23 | 2024-03-08 | 沈阳鑫博工业技术股份有限公司 | Flue gas denitration device of alumina suspension roasting furnace and use method of flue gas denitration device |
| CN108178173A (en) * | 2018-01-04 | 2018-06-19 | 清华大学 | The roasting system and method for a kind of aluminium hydroxide |
| CN108178173B (en) * | 2018-01-04 | 2019-11-22 | 清华大学 | A kind of roasting system and method for aluminium hydroxide |
| CN108325357A (en) * | 2018-03-02 | 2018-07-27 | 国电环境保护研究院有限公司 | A kind of the supply adjusting method and SCR system of reducing agent |
| CN108325357B (en) * | 2018-03-02 | 2023-10-24 | 国电环境保护研究院有限公司 | SCR system of power plant boiler and reducing agent supply adjusting method thereof |
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