CN106890561A - A kind of nitrogen oxides trap setting and method - Google Patents
A kind of nitrogen oxides trap setting and method Download PDFInfo
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- CN106890561A CN106890561A CN201710291082.3A CN201710291082A CN106890561A CN 106890561 A CN106890561 A CN 106890561A CN 201710291082 A CN201710291082 A CN 201710291082A CN 106890561 A CN106890561 A CN 106890561A
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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Abstract
The invention discloses a kind of nitrogen oxides trap setting, including reactor body, the side of the outside of the reactor body bottom is provided with air blower, air compressor, liquid storage cylinder is provided with the outside of the reactor body upper end, the liquid storage cylinder includes top layer liquid storage cylinder, and the liquid storage cylinder interlocks to reactor body interior and extends laterally to form lower floor's liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder；The reactor body interior is separated into the first reative cell, the second reative cell, the 3rd reative cell and the 4th reative cell by lower floor's liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder successively from bottom to up.A kind of nitrogen oxides trap setting small volume of the invention, high working efficiency, can effectively remove the nitrogen oxides in waste gas, enterprise is reached the target for realizing energy-saving and emission-reduction.
Description
Technical field
The present invention relates to heating energy-saving technical field, more particularly to a kind of nitrogen oxides trap setting and method.
Background technology
With industrialized development, problem of environmental pollution is increasingly serious, and nitrogen oxides is as pollutant main in air.
Nitrogen oxides is originated widely, mainly includes that steam power plant generates electricity and the coal fire discharged of Industrial Boiler, motor vehicle exhaust emission, solid
Castoff burning and civilian burning etc., according to statistics, 67% nitrogen oxide emission carrys out spontaneous combustion coal.Nitrogen oxides mainly includes
NO、NO2、N2O3、N2O4、N2O5Deng NO and NO2It is wherein topmost atmosphere pollution, to ecological environment, soil, air and people
Class health has huge harm, therefore controls the discharge of nitrogen oxides and improvement denitration problem to endeavour to solve as researcher
Important topic.
At present, the technique of the discharge of control nitrogen oxides includes wet method and dry method, and dry method mainly includes solid absorption, selection
Property catalytic reduction method (SCR), SNCR (SNCR), electron beam irradiation method (EB) etc.；Wet denitration one at this stage
As be the method that the nitrogen oxides in flue gas is absorbed with absorbent, conventional absorbent includes the aqueous solution of water or alkali, in view of NO
Solubility in water is very low, general to add oxidant such as ozone or hydrogen peroxide to be ejected into flue gas, and NO is oxidized into NO2,
Pass through alkali liquor absorption NO again through the flue gas after peroxidating2, generate the waste water containing nitrite.Traditional oxynitride denitration device
Using spraying technique, volume is big, and cost is high, and efficiency is low, has had a strong impact on target for energy-saving and emission-reduction realization, meanwhile, to enterprise operation
Bring heavy losses, profit reduction.
The content of the invention
Based on the technical problem that background technology is present, the present invention proposes a kind of nitrogen oxides trap setting, the apparatus body
The small, high working efficiency of product, can effectively remove the nitrogen oxides in waste gas.
A kind of nitrogen oxides trap setting, including reactor body, the side of the outside of the reactor body bottom
Air blower is provided with, the air blower connects the inlet end of air compressor by pipeline, and the outlet side of the air compressor connects
Reactor air inlet is connect, the reactor air inlet is provided with air inlet check valve；
Liquid storage cylinder is provided with the outside of the reactor body upper end, the liquid storage cylinder includes top layer liquid storage cylinder, the storage
Sap cavity interlocks to reactor body interior and extends laterally to form lower floor's liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder, it is described under
Lower metafiltration is respectively equipped between the end of layer liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder and the reactor inner body wall
Net, middle level filter screen and upper screen；Lower floor's liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder are by the reactor body
Portion is separated into the first reative cell, the second reative cell, the 3rd reative cell and the 4th reative cell successively from bottom to up；
If the lower surface of lower floor's liquid storage cylinder, middle level liquid storage cylinder, upper strata liquid storage cylinder and top layer liquid storage cylinder is equipped with dry fog
Change nozzle；Lower floor's liquid storage cylinder, middle level liquid storage cylinder, the lower surface of upper strata liquid storage cylinder are equipped with oxygen-enriched generator；The reaction
Gas is equipped with the inwall of kettle body and above reactor air inlet, lower screen, middle level filter screen and upper screen
Sensor；
The one end of the reactor bodies top is provided with feed tube, one end connection liquid storage cylinder of the feed tube, another
End connection reservoir, the feed tube is provided with water pump；The other end of the reactor bodies top is provided with gas outlet；It is described
The bottom of reactor body interior is provided with liquid storage pool, and dividing plate is provided between the poultry liquid pool and first reative cell, described
The lower surface at dividing plate center is provided with liquid sensor, side of the liquid storage pool bottom apart from the reactor air inlet distal end
Waste liquid tank is connected by pipeline, useless hydraulic control valve is provided between the waste liquid tank and liquid storage pool, the reactor body exterior
Bottom is provided with support；
The side of the reactor body is provided with controller, the air blower, air compressor, gas sensor, liquid
Sensor, oxygen-enriched generator, atomizer, air inlet check valve, useless hydraulic control valve, water pump are electrically connected by conduction with controller
Connect.
Preferably, the following table of lower floor's liquid storage cylinder, middle level liquid storage cylinder, upper strata liquid storage cylinder and top layer liquid storage cylinder is convex downwards
Go out curved.
Preferably, the atomizing particle that the atomizer sprays is 50-200um.
Preferably, the dividing plate is loose structure.
Preferably, the thickness of the lower screen, middle level filter screen and upper screen is 100-300mm, the lower metafiltration
Sorbing material is scribbled in net, middle level filter screen and upper screen.
Preferably, the sorbing material is zeolite, silica gel or macroreticular resin.
A kind of nitrogen oxides method for catching, specific method step is as follows：
S1：Ammoniacal liquor in reservoir is poured into liquid storage cylinder by water pump；
S2：Start controller, waste gas is entered the first reative cell, gas sensor detection by air blower by air compressor
To after waste gas, starting oxygen-enriched generator is used to aoxidize generation nitrogen dioxide, starts atomizer by the alkali lye in lower floor's liquid storage cylinder
Spray and gas reaction；
S3：Waste gas enters the second reative cell by lower screen, after gas sensor detects waste gas, starts oxygen-enriched generation
Device is used to aoxidize generation nitrogen dioxide, starts atomizer and sprays and gas reaction the alkali lye in the liquid storage cylinder of middle level；
S4：Waste gas enters the 3rd reative cell by middle level filter screen, after gas sensor detects waste gas, starts oxygen-enriched generation
Device is used to aoxidize generation nitrogen dioxide, starts atomizer and sprays and gas reaction the alkali lye in the liquid storage cylinder of upper strata；
S5：Waste gas enters the 4th reative cell by upper screen, after gas sensor detects waste gas, starts oxygen-enriched generation
Device is used to aoxidize generation nitrogen dioxide, starts atomizer and sprays and gas reaction the alkali lye in top layer liquid storage cylinder；
S6：Reacting the waste liquid for producing will fall into poultry liquid pool, when the waste liquid horizontal plane in liquid storage pool touches liquid sensing
During device, controller opens useless hydraulic control valve, and waste liquid flows into waste liquid tank.
Further, the concentration of ammoniacal liquor is 15-30% in the S1.
Beneficial effect in the present invention：
A kind of nitrogen oxides trap setting of the invention, is input into reactor body by air compressor by waste gas first
It is interior, increased the concentration of nitrogen oxides of exhaust gas；Secondly, layering is set in the present invention and is provided with oxygen-enriched generator, preferably promote
The production of nitrogen dioxide, improves reaction efficiency in waste gas；Liquid storage cylinder storage alkali lye is provided with the present invention again, and utilizes mist
Changing nozzle makes alkali mist form 50-200um very minute bubbles, with nitrogen oxides frequent impact, accelerates the speed and efficiency of reaction；
In addition it is provided with device of the invention and reactor is separated into four reative cells, reaction of high order causes the reaction of nitrogen oxides more
Fully.A kind of nitrogen oxides trap setting small volume of the invention, high working efficiency, can effectively remove the nitrogen oxygen in waste gas
Compound, makes enterprise reach the target for realizing energy-saving and emission-reduction.After device of the invention treatment waste gas, amount of nitrogen oxides≤
1.50mg/m3, 100 times are reduced again than national minimum discharge standard.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with reality of the invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of structural representation of nitrogen oxides trap setting proposed by the present invention.
In figure：1- reactors body, 2- air blowers, 3- air compressors, 4- reactors air inlet, 41- air inlets are unidirectional
Valve, 5- liquid storage cylinders, 51- lower floors liquid storage cylinder, 501- lower screens, 52- middle levels liquid storage cylinder, 502- middle levels filter screen, 53- upper stratas liquid storage
Chamber, 503- upper screens, 54- top layers liquid storage cylinder, 6- controllers, 7- gas sensors, 8- dividing plates, 9- liquid sensors, 10- store
Liquid pool, 11- oxygen-enriched generators, 12- atomizers, the reative cells of 13- first, the reative cells of 14- second, the reative cells of 15- the 3rd, 16-
4th reative cell, 17- waste liquid tanks, 1701- give up hydraulic control valve, 18- supports, 19- feed tubes, 20- reservoirs, 21- water pumps, 22-
Gas outlet.
Specific embodiment
The present invention is made with reference to specific embodiment further explain.
A kind of nitrogen oxides trap setting, including reactor body 1, the side of the outside of the bottom of reactor body 1 set
There is air blower 2, air blower 2 connects the inlet end of air compressor 3, the outlet side coupled reaction of air compressor 3 by pipeline
Kettle air inlet 4, reactor air inlet 4 is provided with air inlet check valve 41.
Be provided with liquid storage cylinder 5 on the outside of the upper end of reactor body 1, liquid storage cylinder 5 includes top layer liquid storage cylinder 54, liquid storage cylinder 5 to
The alternate internal of reactor body 1 extends laterally to form lower floor's liquid storage cylinder 51, middle level liquid storage cylinder 52 and upper strata liquid storage cylinder 53, lower floor's storage
The lower surface of sap cavity 51, middle level liquid storage cylinder 52, upper strata liquid storage cylinder 53 and top layer liquid storage cylinder 54 is downwardly projecting curved, and the design can
So that liquid in liquid storage cylinder 5 preferably reach under, in, inside upper, top layer liquid storage cylinder.
Between lower floor's liquid storage cylinder 51, the end of middle level liquid storage cylinder 52 and upper strata liquid storage cylinder 53 and reactor inner body wall respectively
It is provided with lower screen 501, middle level filter screen 502 and upper screen 503；Lower screen 501, middle level filter screen 5022 and upper screen
503 thickness is 150mm (thickness can be adjusted in the range of 100-300mm), lower screen 501, middle level filter screen 502 and upper strata
Sorbing material is scribbled on filter screen 503, sorbing material is zeolite (sorbing material can also select silica gel or macroreticular resin), lower floor
Liquid storage cylinder 51, middle level liquid storage cylinder 52 and upper strata liquid storage cylinder 53 will successively be separated into first from bottom to up inside reactor body 1 anti-
Answer room 13, the second reative cell 14, the 3rd reative cell 15 and the 4th reative cell 16；
If the lower surface of lower floor's liquid storage cylinder 51, middle level liquid storage cylinder 52, upper strata liquid storage cylinder 53 and top layer liquid storage cylinder 54 is equipped with
Dry nebulization nozzle 12, the atomizing particle that atomizer 12 sprays is 50-200um；Lower floor's liquid storage cylinder 51, middle level liquid storage cylinder 52, on
The lower surface of layer liquid storage cylinder 53 is equipped with oxygen-enriched generator 11；On the inwall of reactor body 1 and positioned at reactor air inlet 4,
The top of lower screen 501, middle level filter screen 502 and upper screen 503 is equipped with gas sensor 7；
The one end at the top of reactor body 1 is provided with feed tube 19, one end connection liquid storage cylinder 5, other end of feed tube 19
Connection reservoir 20, feed tube 19 is provided with water pump 21；The other end at the top of reactor body 1 is provided with gas outlet 22；Reaction
Bottom inside kettle body 1 is provided with liquid storage pool 10, dividing plate 8 is provided between the poultry reative cell 13 of liquid pool 10 and first, every 8 is many
Pore structure, the lower surface at the center of dividing plate 8 is provided with liquid sensor 9, and the bottom of liquid storage pool 10 is apart from the distal end of reactor air inlet 4
Side connects waste liquid tank 17 by pipeline, and useless hydraulic control valve 1701, reactor body 1 are provided between waste liquid tank 17 and liquid storage pool 10
Outside bottom is provided with support 18；
The side of reactor body 1 is provided with controller 6, air blower 2, air compressor 3, gas sensor 7, liquid sensing
Device 9, oxygen-enriched generator 11, atomizer 12, air inlet check valve 41, useless hydraulic control valve 1701, water pump 21 by it is conductive with
Controller 6 is electrically connected.
A kind of operating method of nitrogen oxides trap setting, method and step is as follows：
S1：Ammoniacal liquor in reservoir 20 is poured into 5 in liquid storage cylinder by water pump 21, ammoniacal liquor concentration is that 20% (its concentration can
Selected in the range of 15-30%)；
S2：Start controller 6, waste gas is entered the first reative cell 13, gas sensing by air blower 2 by air compressor 3
After device 7 detects waste gas, starting oxygen-enriched generator 11 is used to aoxidize generation nitrogen dioxide, starts atomizer 12 by lower floor's liquid storage
Ammoniacal liquor in chamber 51 sprays and gas reaction；
S3：Waste gas enters the second reative cell 14 by lower screen 501, after gas sensor 7 detects waste gas, starts rich
Oxygen Generator 11 is used to aoxidize generation nitrogen dioxide, starts atomizer 12 and sprays and gas the ammoniacal liquor in middle level liquid storage cylinder 52
Reaction；
S4：Waste gas enters the 3rd reative cell 15 by middle level filter screen 502, after gas sensor 7 detects waste gas, starts rich
Oxygen Generator 11 is used to aoxidize generation nitrogen dioxide, starts atomizer 12 and sprays and gas the ammoniacal liquor in upper strata liquid storage cylinder 53
Reaction；
S5：Waste gas enters the 4th reative cell 16 by upper screen 503, after gas sensor 7 detects waste gas, starts rich
Oxygen Generator 11 is used to aoxidize generation nitrogen dioxide, starts atomizer 12 and sprays and gas the ammoniacal liquor in top layer liquid storage cylinder 54
Reaction；
S6：Reacting the waste liquid for producing will fall into poultry liquid pool 10, when the waste liquid horizontal plane in liquid storage pool 10 touches liquid
During sensor 9, controller 6 opens useless hydraulic control valve 1701, and waste liquid flows into waste liquid tank 17.
After through device of the invention treatment waste gas, amount of nitrogen oxides is 1.47mg/m3, a kind of nitrogen oxides of the invention
Trap setting small volume, high working efficiency, can effectively remove the nitrogen oxides in waste gas, waste gas in four reative cells,
Reaction of high order is carried out by serpentine route so that the neutralization reaction of nitrogen oxides is more abundant, reach enterprise and realize that energy-conservation subtracts
The target of row.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of nitrogen oxides trap setting, including reactor body, it is characterised in that：Outside the reactor body bottom
The side in portion is provided with air blower, and the air blower connects the inlet end of air compressor by pipeline, the air compressor
Outlet side coupled reaction kettle air inlet, the reactor air inlet is provided with air inlet check valve；
Liquid storage cylinder is provided with the outside of the reactor body upper end, the liquid storage cylinder includes top layer liquid storage cylinder, the liquid storage cylinder
Interlock to reactor body interior and extend laterally to form lower floor's liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder, lower floor's storage
Be respectively equipped between sap cavity, the end of middle level liquid storage cylinder and upper strata liquid storage cylinder and the reactor inner body wall lower screen, in
Metafiltration net and upper screen；Lower floor's liquid storage cylinder, middle level liquid storage cylinder and upper strata liquid storage cylinder by the reactor body interior from
Under supreme be separated into the first reative cell, the second reative cell, the 3rd reative cell and the 4th reative cell successively；
If the lower surface of lower floor's liquid storage cylinder, middle level liquid storage cylinder, upper strata liquid storage cylinder and top layer liquid storage cylinder is equipped with dry nebulization spray
Mouth；Lower floor's liquid storage cylinder, middle level liquid storage cylinder, the lower surface of upper strata liquid storage cylinder are equipped with oxygen-enriched generator；The reactor sheet
Gas sensing is equipped with the inwall of body and above reactor air inlet, lower screen, middle level filter screen and upper screen
Device；
The one end of the reactor bodies top is provided with feed tube, and one end connection liquid storage cylinder of the feed tube, the other end connect
Reservoir is connect, the feed tube is provided with water pump；The other end of the reactor bodies top is provided with gas outlet；The reaction
The bottom of kettle body interior is provided with liquid storage pool, and dividing plate, the dividing plate are provided between the poultry liquid pool and first reative cell
The lower surface at center is provided with liquid sensor, and the liquid storage pool bottom passes through apart from the side of the reactor air inlet distal end
Pipeline connects waste liquid tank, and useless hydraulic control valve, the bottom of the reactor body exterior are provided between the waste liquid tank and liquid storage pool
It is provided with support；
The side of the reactor body is provided with controller, the air blower, air compressor, gas sensor, liquid sensing
Device, oxygen-enriched generator, atomizer, air inlet check valve, useless hydraulic control valve, water pump are electrically connected with the controller by conduction.
2. a kind of nitrogen oxides trap setting according to claim 1, it is characterised in that lower floor's liquid storage cylinder, middle level
The lower surface of liquid storage cylinder, upper strata liquid storage cylinder and top layer liquid storage cylinder is downwardly projecting curved.
3. a kind of nitrogen oxides trap setting according to claim 1, it is characterised in that the mist that the atomizer sprays
Change particle is 50-200um.
4. a kind of nitrogen oxides trap setting according to claim 1, it is characterised in that the dividing plate is loose structure.
5. a kind of nitrogen oxides trap setting according to claim 1, it is characterised in that the lower screen, middle metafiltration
The thickness of net and upper screen is 100-300mm, and adsorption material is scribbled in the lower screen, middle level filter screen and upper screen
Material.
6. a kind of sulfur dioxide trap setting according to claim 5, it is characterised in that the sorbing material be zeolite,
Silica gel or macroreticular resin.
7. a kind of nitrogen oxides method for catching according to claim 1, it is characterised in that specific method step is as follows：
S1：Ammoniacal liquor in reservoir is poured into liquid storage cylinder by water pump；
S2：Start controller, waste gas is entered the first reative cell by air blower by air compressor, and gas sensor detects useless
After gas, starting oxygen-enriched generator is used to aoxidize generation nitrogen dioxide, starts atomizer and sprays the alkali lye in lower floor's liquid storage cylinder
With gas reaction；
S3：Waste gas enters the second reative cell by lower screen, after gas sensor detects waste gas, starts oxygen-enriched generator and uses
In oxidation generation nitrogen dioxide, start atomizer and spray and gas reaction the alkali lye in the liquid storage cylinder of middle level；
S4：Waste gas enters the 3rd reative cell by middle level filter screen, after gas sensor detects waste gas, starts oxygen-enriched generator and uses
In oxidation generation nitrogen dioxide, start atomizer and spray and gas reaction the alkali lye in the liquid storage cylinder of upper strata；
S5：Waste gas enters the 4th reative cell by upper screen, after gas sensor detects waste gas, starts oxygen-enriched generator and uses
In oxidation generation nitrogen dioxide, start atomizer and spray and gas reaction the alkali lye in top layer liquid storage cylinder；
S6：Reacting the waste liquid for producing will fall into poultry liquid pool, when the waste liquid horizontal plane in liquid storage pool touches liquid sensor,
Controller opens useless hydraulic control valve, and waste liquid flows into waste liquid tank.
8. a kind of nitrogen oxides method for catching according to claim 7, it is characterised in that the concentration of ammoniacal liquor is in the S1
15-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710291082.3A CN106890561A (en) | 2017-04-28 | 2017-04-28 | A kind of nitrogen oxides trap setting and method |
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| CN201710291082.3A CN106890561A (en) | 2017-04-28 | 2017-04-28 | A kind of nitrogen oxides trap setting and method |
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Family
ID=59196688
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| CN108355483A (en) * | 2018-02-02 | 2018-08-03 | 东华大学 | A kind of wet denitration system and method absorbing flue gas based on catalytic ozonation |
| CN112982401A (en) * | 2019-12-17 | 2021-06-18 | 上海三航奔腾海洋工程有限公司 | Pile hammer and pile driving device with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108355483A (en) * | 2018-02-02 | 2018-08-03 | 东华大学 | A kind of wet denitration system and method absorbing flue gas based on catalytic ozonation |
| CN108355483B (en) * | 2018-02-02 | 2021-01-15 | 东华大学 | Wet denitration system and method based on ozone catalytic oxidation absorption of flue gas |
| CN112982401A (en) * | 2019-12-17 | 2021-06-18 | 上海三航奔腾海洋工程有限公司 | Pile hammer and pile driving device with same |
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