CN217613948U - Nitrogen oxide tail gas treatment system - Google Patents
Nitrogen oxide tail gas treatment system Download PDFInfo
- Publication number
- CN217613948U CN217613948U CN202122796501.3U CN202122796501U CN217613948U CN 217613948 U CN217613948 U CN 217613948U CN 202122796501 U CN202122796501 U CN 202122796501U CN 217613948 U CN217613948 U CN 217613948U
- Authority
- CN
- China
- Prior art keywords
- gas
- nitrogen oxide
- tank
- communicated
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the field of nitrogen oxide waste gas treatment, and discloses a nitrogen oxide tail gas treatment system, which comprises a gallium nitrate reaction kettle, a clear water bubbling absorption tank, a hydrogen peroxide bubbling absorption tank, a water jet vacuum unit, a spray packed tower, a flue gas adsorption tower, a centrifugal fan and a cooling assembly which are sequentially communicated by using air pipes, wherein the centrifugal fan is communicated with a chimney to discharge gas, a gas-liquid separator is arranged on a connecting air pipe of the gallium nitrate reaction kettle and the clear water bubbling absorption tank, and the cooling assembly is respectively connected with the gas-liquid separator and the water jet vacuum unit; the water injection vacuum unit, the spraying packed tower and the flue gas adsorption tower are all provided with pesticide boxes and are communicated with the pesticide boxes respectively through pipelines and spraying circulating pumps arranged on the pipelines. The system has the advantages of simple use process, flexible and convenient medicine dispensing and adding, reduction of labor intensity of personnel, reasonable energy utilization, high treatment efficiency, and reduction of operation cost and production energy consumption.
Description
Technical Field
The utility model belongs to nitrogen oxide exhaust-gas treatment field, more specifically relates to a nitrogen oxide tail gas processing system.
Background
The nitrogen oxide-containing tail gas contains nitrogen monoxide, nitrogen dioxide, laughing gas, dinitrogen pentoxide and the like which are common atmospheric pollutants, and the main components of the nitrogen oxide-containing tail gas are nitrogen monoxide and nitrogen dioxide.
The nitrogen oxides are treated by a reduction method, a plasma activation method, a biochemical method, an adsorption method, a liquid absorption method, or the like. The liquid absorption method is a method of purifying exhaust gas by absorbing nitrogen oxides in the exhaust gas with water or an aqueous solution of an acid, an alkali, or a salt. Most of the existing nitrogen oxide tail gas treatment devices are large-scale alkali spray washing tower devices for treatment, and have the problems of large equipment, high operation cost, poor mass transfer effect and the like. And due to the NO of NaOH 2 The reaction absorption of the nitrogen peroxide of NO is limited, and the treated waste gas still has nitrogen oxide and sour taste, so that the treatment effect cannot be achieved.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a nitrogen oxide tail gas treatment system; the system has the advantages of simple use process, flexible and convenient medicine dispensing and adding, reduction of the labor intensity of personnel, reasonable utilization of energy, high treatment efficiency, and reduction of the operation cost and the production energy consumption.
For realizing the purpose of the utility model, the concrete technical proposal is as follows:
a nitrogen oxide tail gas treatment system comprises a gallium nitrate reaction kettle, a clean water bubbling absorption tank, a hydrogen peroxide bubbling absorption tank, a water injection vacuum unit, a spray packed tower, a flue gas adsorption tower, a centrifugal fan and a cooling assembly which are sequentially communicated through air pipes, wherein the centrifugal fan is communicated with a chimney to discharge gas;
the water spraying vacuum unit, the spraying packed tower and the flue gas adsorption tower are respectively provided with a pesticide box, and are communicated with the pesticide boxes respectively through pipelines and spraying circulating pumps arranged on the pipelines.
Nitrogen oxide tail gas processing system uses centrifugal fan to extract the nitrogen oxide tail gas that gallium nitrate reation kettle produced, retrieves to smuggle liquid, clear water tympanic bulla adsorption tanks water mixing reaction and generates HNO through vapour and liquid separator in proper order 2 And HNO 3 Mixing with hydrogen peroxide in a bubbling absorption oxidation tank, and quickly oxidizing NO into NO 2 Reacting with urea in water injection vacuum unit to generate N 2 、CO 2 And H 2 And O is effectively absorbed and purified by alkali liquor in the spray packed tower, the flue gas adsorption tower further processes the flue gas in the workshop environment after final flue gas absorption, and the flue gas is uniformly discharged by a chimney after reaching the standard.
Furthermore, the nitrogen oxide tail gas treatment system also comprises a medicament stirring tank, wherein the medicament stirring tank is respectively connected with a water spraying vacuum unit, a spraying packed tower and a pesticide box of a flue gas adsorption tower through pipelines.
Furthermore, the clean water bubbling absorption tank is provided with a bottom discharge valve I, a top liquid inlet I, a gas outlet I, a gas inlet pipe I and an aeration disc, the gas inlet pipe I is communicated with the gallium nitrate reaction kettle, the gas inlet pipe I extends into the clean water bubbling absorption tank and is close to the bottom of the clean water bubbling absorption tank, the gas outlet I is arranged at the upper part of the pipe orifice of the gas inlet pipe I, the aeration disc is transversely arranged between the pipe orifice of the gas inlet pipe I and the gas outlet I, and the aeration disc is preferably a disc type diaphragm micropore aeration disc.
Further, the hydrogen peroxide bubbling absorption tank is provided with a bottom discharge valve II, a top liquid inlet II, an upper gas outlet II, a gas inlet pipe II and a pore plate, the gas inlet pipe II is communicated with the clear water bubbling absorption tank, the gas inlet pipe II extends into the hydrogen peroxide bubbling absorption tank and is close to the bottom, the pore plate is transversely arranged between the pipe orifice of the gas inlet pipe II and the upper gas outlet II, gas holes are uniformly formed in the pore plate, and the pore diameter of the gas holes is preferably 30-40 mm.
Further, the water jet vacuum unit comprises a vacuum transmitting assembly, an air inlet pipeline, a buffer box and a medicine box, wherein the medicine box is arranged below the buffer box and communicated with the bottom of the buffer box, the buffer box is provided with a first cooler, a second cooler is arranged in the medicine box, the first cooler and the second cooler are communicated with the cooling assembly, the vacuum generating assembly comprises a venturi ejector and an injection pipe connected with the venturi ejector, the air inlet pipeline penetrates through the buffer box and communicated with the venturi ejector, the injection pipe is arranged in the air inlet pipeline, the tail end of the injection pipe penetrates through the air inlet pipeline and the jet box and extends into the medicine box, a check valve is arranged on the air inlet pipeline, the medicine box is communicated with the venturi ejector through a pipeline provided with a jet circulating pump, an air outlet is arranged at the top of the buffer box, vacuum meters are respectively arranged on the pipeline connecting the medicine box and the venturi ejector, and the water jet vacuum meters are further preferably arranged on the pipeline connecting the medicine box and the venturi ejector, and the buffer box.
Furthermore, the spraying packed tower comprises a spraying tower air inlet at the lower part, a spraying tower air outlet at the upper part, a packing layer between the spraying tower air inlet and the air outlet, and a first liquid distributor between the packing layer and the air outlet, wherein the first liquid distributor is communicated with a medicine box of the spraying packed tower.
Further, the flue gas adsorption tower includes flue gas adsorption tower air inlet, the flue gas adsorption tower gas outlet, the multilayer packing layer between flue gas adsorption tower air inlet and the gas outlet on upper portion of lower part, flue gas adsorption tower gas outlet department is equipped with the demister, every layer all be equipped with liquid distributor two above the packing layer, liquid distributor two communicates with the medical kit of flue gas adsorption tower.
Furthermore, the lower part of the flue gas adsorption tower is also provided with a second air inlet communicated with the workshop environment.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) The utility model provides a nitrogen oxide containing tail gas processing system, adopt vapour and liquid separator to retrieve and smuggle liquid secretly, clear water tympanic bulla absorption tank carries out the clear water and absorbs, hydrogen peroxide solution tympanic bulla absorption tank carries out hydrogen peroxide solution oxidation absorption, water injection vacuum unit carries out gas-liquid urea compulsory mixing reaction, carry out alkali lye absorption purification in the spray packed tower, the flue gas adsorption tower carries out the adsorbed improvement scheme of flue gas, realize nitrogen oxide's processing up to standard in a system, thereby further save equipment investment, reach the effect of administering pollution, environmental protection well.
(2) The utility model discloses the normal water sprays vacuum unit is for forcing gas-liquid mixing device, makes nitrogen oxide gas and treatment medicament force the mixture and take place the reaction, and the medicament of adoption is urea, and urea is nitrogen gas, carbon dioxide and water with the result of nitrogen oxide reaction. The whole device has high treatment efficiency and good treatment effect, and the medicament can be repeatedly used, so that the consumed medicament is less. Meanwhile, the device adopts the processes of liquid phase closed cycle and gas phase gradual transition, and the treated liquid can be directly added with urea to prepare a medicament for reuse, so that no waste water is generated in the water injection vacuum unit.
(3) The nitrogen oxide-containing tail gas treatment system is simple in use process, is provided with a medicament stirring tank and a medicament feeding pump, dispenses and adds medicaments flexibly and conveniently, reduces the labor intensity of personnel, reasonably utilizes energy, and has high treatment efficiency.
(4) Nitrogen oxide containing tail gas treatment system reasonable in design, simple to operate, nimble.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is a schematic structural diagram of a nitrogen oxide tail gas treatment system according to embodiment 1 of the present invention.
Fig. 2 is a schematic view of a water jet vacuum unit in the nitrogen oxide tail gas treatment system according to embodiment 1 of the present invention.
Detailed Description
The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
Example 1
The embodiment discloses a nitrogen oxide tail gas treatment system, as shown in fig. 1-2, the treatment system includes: gallium nitrate reaction kettle 1, clear water bubbling absorption tank 2, hydrogen peroxide bubbling absorption tank 3, three-stage series water injection vacuum unit 4, spray packed tower 5, two series flue gas adsorption towers 6, centrifugal fan 7, medicament stirring tank 8 and cooling unit 9.
The nitric acid reaction kettle 1 is connected with the clean water bubbling absorption tank 2 through an air pipe; the clean water bubbling absorption tank 2 is connected with the hydrogen peroxide bubbling absorption tank 3 by an air pipe; the hydrogen peroxide bubbling absorption tank 3 is connected with the water injection vacuum unit 4 by an air pipe, the water injection vacuum unit 4 is connected with the spray packed tower 5 by the air pipe, the spray packed tower 5 is connected with the flue gas adsorption tower 6 by the air pipe, and the flue gas adsorption tower 6 is connected with the centrifugal fan 7 by the air pipe; the centrifugal fan 7 is connected with a chimney through an air pipe to discharge waste gas.
In the embodiment, two nitric acid reaction kettles 1 are arranged in parallel, after the gallium nitrate reaction kettle 1 is fed for reaction, the reaction temperature is high, the solution volatilization speed is high, and a large amount of precious liquid is lost along with flue gas in the reaction process, for the situation, in the embodiment, a gas-liquid separator 11 is arranged at an air outlet of the gallium nitrate reaction kettle 1, the gas-liquid separator 11 is connected with a cooling unit 9, and due to the complex pipeline in the figure, a communication pipeline between the cooling unit 9 and the gas-liquid separator 11 is not shown in the figure 1. The solution in the waste gas at the outlet of the gallium nitrate reaction kettle 1 is condensed and recovered, when the flue gas passes through the gas-liquid separator 11, the noble liquid and the acid liquid are condensed and refluxed, so that the loss of noble metals is reduced to the maximum extent, meanwhile, the utilization efficiency of the acid liquid can be improved, and the consumption of treatment agents is reduced. In this embodiment, preferably, the gas-liquid separator 11 at the gas outlet of the gallium nitrate reaction kettle 1 is made of quartz glass, the inner winding glass coil is connected with the inlet and the outlet of the cooling unit 9, and the flue gas can be cooled by circulating cooling water when the cooling unit 9 is operated.
Clear water tympanic bulla tourie 2 is equipped with bottom discharge valve one, top inlet one, upper portion gas outlet one, intake pipe one and aeration dish, intake pipe one with gallium nitrate reation kettle 1 intercommunication, intake pipe one stretches into in the clear water tympanic bulla tourie and is close to the bottom position, aeration dish is horizontal the mouth of pipe department and the upper portion gas outlet of intake pipe one between one, the nitrogen oxide tail gas that gallium nitrate reation kettle 1 reaction produced passes through upper portion air inlet one through the tuber pipe and gets into clear water tympanic bulla tourie 2 for nitrogen oxide gas fully absorbs with clear water tympanic bulla tourie 2 normal water mixing, and the reaction generates HNO 2 And HNO 3 The reaction equation is: 2NO 2 +H 2 O＝＝ HNO 2 +HNO 3 . Wherein, the bottom of the clean water bubbling absorption tank 2 is provided with a first discharge valve which can be used for recovering nitric acid. In the embodiment, the aeration disc is a disc type diaphragm microporous aeration disc, the aeration disc is fixed between the pipe orifice of the first air inlet pipe and the first upper air outlet, a self-stress expansion flexible connection mode is adopted, the flexible connection piece is made of EPDM (ethylene-propylene-diene monomer) which is the same as the diaphragm material, the good shock resistance and the good sealing performance are achieved, the phenomenon that the connection part is broken due to vibration generated by air impact can be effectively avoided, the aeration disc is small in aeration bubble diameter in the using process, large in gas-liquid interface area and even in bubble diffusion, the air distribution area is increased, the diffusion of bubbles and gas-liquid mixing are intensified, and the aeration reaction is facilitated.
In this embodiment, hydrogen peroxide solution tympanic bulla adsorption tank 3 is equipped with bottom discharge valve two, top inlet two, upper portion gas outlet two, two intake pipe and orifice plate, intake pipe two communicates with the upper portion gas outlet of clear water tympanic bulla adsorption tank 2, intake pipe two stretches into hydrogen peroxide solution tympanic bulla adsorption tank and is close to the bottom position, the orifice plate is horizontal between the mouth of pipe department and the upper portion gas outlet two of intake pipe two, in this embodiment, the aperture of hole is 40mm in the orifice plate, plays the effect of the equipartition bubble that blocks water. A conventional bubbling nozzle is arranged at the pipe orifice of the air inlet pipe II of the hydrogen peroxide bubbling absorption tank 3, and after the starting-up operation,when the air current was flowing, the liquid in hydrogen peroxide solution tympanic bulla adsorption tanks 3 was in "boiling" state, and the nitrogen oxide tail gas can rationally disperse nitrogen oxide through the inseparable gas pocket on tympanic bulla shower nozzle surface, passes through the liquid layer, and the tympanic bulla and play for nitrogen oxide is abundant and hydrogen peroxide solution is mixed, and nitric oxide can fast oxidation become nitrogen dioxide, and the main reaction formula is: 2NO +3H 2 O 2 ＝2HNO 3 +2H 2 O，H 2 O 2 +HNO 3 ＝＝2H 2 O+2NO 2 ↑+O 2 ×) in the present embodiment, the concentration of the hydrogen peroxide in the hydrogen peroxide bubbling absorption tank 3 is maintained at 30 to 35%.
In this embodiment, the water jet vacuum unit 4 is a forced gas-liquid mixing device, the water jet vacuum unit 4 includes a vacuum emitting assembly, an air inlet pipeline 43, a buffer tank and a medicine box 42, the medicine box 42 is disposed below the buffer tank and communicated with the bottom of the buffer tank, the buffer tank is provided with a first cooler 47, a second cooler 411 is disposed in the medicine box 42, the first cooler 47 and the second cooler 411 are both communicated with the cooling assembly 9, the vacuum generating assembly includes a venturi ejector 46 and an injection pipe 48 connected with the venturi ejector 46, the air inlet pipeline 43 passes through the buffer tank and is communicated with the venturi ejector 46, the injection pipe 48 is disposed in the air inlet pipeline 43, the tail end of the injection pipe 48 passes through the air inlet pipeline 43 and the buffer tank and extends into the medicine box 42, a check valve 45 is disposed on the air inlet pipeline 43, the medicine box 42 is communicated with the venturi ejector 46 through a pipeline provided with an injection circulating pump 41, an air outlet 43 is disposed at the top of the buffer tank, and a meter 49 is disposed on the vacuum pipeline connecting the medicine box 42 and the venturi ejector 46. The medicine chest 42 is further provided with a liquid supplementing port 410 communicated with the medicine stirring groove 8, the high-pressure circulating jet pump 1 jets out high-speed circulating medicine through the venturi jet device 45, vacuum is formed at the outlet of the nozzle of the venturi jet device 45, and the generated suction force pumps nitrogen oxide into the jet tower water injection vacuum unit 4, so that the nitrogen oxide gas and the medicine solution are forcibly mixed and fully react. The first cooler 47 and the second cooler411 is connected with the inlet and outlet of the cooling unit 9 through a pipeline, circulating cooling water can enter when the cooling unit 9 is operated, and tail gas and medicament in the water injection vacuum unit 4 can be cooled. The agent added into the water injection vacuum unit medicine box 42 is urea, the reaction products of the urea and the nitrogen oxide are nitrogen, carbon dioxide and water, and the reaction equation is as follows: 4CO (NH) 2 ) 2 +6NO 2 ＝4CO 2 +7N 2 +8H 2 And O. In the embodiment, the nitrogen oxide is treated into harmless nitrogen to the maximum extent by the treatment processes of 3-stage series treatment, liquid-phase closed cycle and gas-phase stepwise transition. The treatment effect is good, no secondary pollution is caused, the medicament can be repeatedly used, and the wastewater discharge is greatly reduced; in this embodiment, the concentration of the urea solution in the water jet vacuum unit 4 is kept at 10-15%.
In this embodiment, the spray packed tower 5 uses the packing in the tower as a mass transfer device for gas-liquid two-phase contact. The spray packed tower 5 comprises a spray tower air inlet at the lower part, a spray tower air outlet at the upper part, a packing layer between the spray tower air inlet and the air outlet, and a spray packed tower liquid distributor between the packing layer and the air outlet, wherein the spray packed tower liquid distributor is communicated with a liquid medicine inlet of the spray packed tower. The tower body of the spraying packed tower 5 is a vertical cylinder, the bottom of the tower body is provided with a packing supporting plate, and the packing layer is placed on the supporting plate in a random or regular mode. The liquid is sprayed on the packing from the top of the tower through a liquid distributor of the spray packed tower and flows down along the surface of the packing. The gas is fed from the bottom of the tower, distributed by the gas distribution device, and continuously passes through the gap of the packing layer in a countercurrent manner with the liquid, and the gas phase and the liquid phase are closely contacted on the surface of the packing for mass transfer. Spray packed tower 5 and select ceramic pall ring filler for use, in this embodiment 5 bottoms in the packed tower that sprays have the packed tower medical kit 51 that sprays and be equipped with spray circulating pump two 52, and the medicament that the packed tower medical kit 51 was prepared that sprays is sodium hydroxide and urea mixed solution, and its mass fraction is 5.7%, and the preparation method is 3.5m 3 Water, 200kg flake caustic soda and 200kg urea are uniformly mixed, and the mixture is pumped by a second spray circulating pump 52 and sprayed on the filler to effectively absorb the nitrogen oxide.
In this embodiment, the flue gas adsorption tower 6 includes a flue gas adsorption tower air inlet on the lower part, a flue gas adsorption tower air outlet on the upper part, a multilayer flue gas adsorption tower packing layer between the flue gas adsorption tower air inlet and the air outlet, the flue gas adsorption tower air outlet is provided with a demister, each layer the packing layer top all is provided with a flue gas adsorption tower liquid distributor, the flue gas adsorption tower liquid distributor is communicated with the liquid medicine inlet of the flue gas adsorption tower 6. The liquid distributor arranged at the top of the flue gas adsorption tower 6 has the functions of reducing the amplification effect caused by the liquid maldistribution, giving full play to the efficiency of the packing and uniformly distributing the liquid at the top of the packing layer. The quality of the initial distribution of liquid not only affects the mass transfer efficiency of the packing, but also affects the operational flexibility of the packing. Meanwhile, the liquid outlet of the liquid distributor of the flue gas adsorption tower adopts an atomizing nozzle, and the nozzle can adjust the balance of liquid and gas pressure to achieve a fine or coarse particle spraying effect. This embodiment 6 upper portions of flue gas adsorption tower are equipped with high-efficient combination formula demister, can block the steam in the fog, guarantee that gas flow is unobstructed, can detach the liquid droplet of being smugglied secretly again. Meanwhile, in this embodiment, the lower part of the flue gas adsorption tower 6 is further provided with a second air inlet communicated with the workshop environment, the second air inlet is provided with a second pipeline channel communicated with the workshop environment, and a small amount of nitrogen oxides generated by the workshop environment air draft or other equipment (except the reaction kettle) can enter the flue gas adsorption tower 6 through another second path of tail gas pipeline to perform alkali liquor absorption wet waste gas purification. In this embodiment, a flue gas adsorption tower medicine box is arranged at the bottom of the flue gas adsorption tower 6 and is equipped with a flue gas adsorption tower spray circulation pump, the medicine prepared by the flue gas adsorption tower medicine box is a mixed solution of sodium hydroxide and urea, the concentration of the mixed solution is 5.7%, and the preparation method is 3.5m 3 Water, 200kg caustic soda flakes and 200kg urea were mixed uniformly. The agent is pumped by a spray circulating pump of the flue gas adsorption tower and sprayed on the filler to effectively absorb the nitrogen oxide.
In this embodiment, the chemical stirring tank 8 is further provided. The medicament stirring tank 8 is provided with a stirring paddle 81 and a medicament feeding pump 82, the outlet of the medicament feeding pump 82 is provided with a pipeline which is connected with the medicament boxes of the hydrogen peroxide bubbling absorption tank 3, the water spraying vacuum unit 4, the spraying filler tower 5 and the flue gas adsorption tower 6, and the medicament stirring tank 8 and the hydrogen peroxide bubbling absorption tank 3 are not shown in the figure 1 due to the complex pipeline in the figure. The medicament after being uniformly stirred by the stirring paddle 81 can be pumped to the medicine boxes of various devices through the medicament feeding pump 82, the operation is more flexible and convenient, the labor intensity of personnel is reduced, and the treatment efficiency is high.
The treated waste gas meets the national emission standard and is pumped to a chimney by a centrifugal fan 7 to be discharged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A nitrogen oxide tail gas treatment system is characterized by comprising a gallium nitrate reaction kettle, a clean water bubbling absorption tank, a hydrogen peroxide bubbling absorption tank, a water jet vacuum unit, a spray packed tower, a flue gas adsorption tower, a centrifugal fan and a cooling assembly which are sequentially communicated through an air pipe, wherein the centrifugal fan is communicated with a chimney to discharge gas;
the water injection vacuum unit, the spraying packed tower and the flue gas adsorption tower are all provided with pesticide boxes and are communicated with the pesticide boxes respectively through pipelines and spraying circulating pumps arranged on the pipelines.
2. The nitrogen oxide tail gas treatment system of claim 1, further comprising a reagent stirring tank, wherein the reagent stirring tank is respectively connected with a water spraying vacuum unit, a spraying packed tower and a pesticide box of a flue gas adsorption tower through pipelines.
3. The nitrogen oxide tail gas treatment system as claimed in claim 1, wherein the clean water bubbling absorption tank is provided with a first bottom discharge valve, a first top liquid inlet, a first gas outlet, a first gas inlet pipe and an aeration disc, the first gas inlet pipe is communicated with the gallium nitrate reaction kettle, the first gas inlet pipe extends into the clean water bubbling absorption tank and is close to the bottom, the first gas outlet is arranged at the upper part of a pipe orifice of the first gas inlet pipe, and the aeration disc is transversely arranged between the pipe orifice of the first gas inlet pipe and the first gas outlet.
4. The nitrogen oxide tail gas treatment system of claim 3, wherein the aeration disc is a disc membrane microporous aeration disc.
5. The nitrogen oxide tail gas treatment system according to claim 1, wherein the hydrogen peroxide bubbling absorption tank is provided with a second bottom discharge valve, a second top liquid inlet, a second upper gas outlet, a second gas inlet pipe and a pore plate, the second gas inlet pipe is communicated with the clean water bubbling absorption tank, the second gas inlet pipe extends into the hydrogen peroxide bubbling absorption tank and is close to the bottom, the pore plate is transversely arranged between the pipe orifice of the second gas inlet pipe and the second upper gas outlet, and the pore plate is uniformly provided with gas holes.
6. The nitrogen oxide tail gas treatment system according to claim 1, wherein the water jet vacuum unit comprises a vacuum emission assembly, an air inlet pipeline, a buffer tank and a medicine tank, the medicine tank is arranged below the buffer tank and communicated with the bottom of the buffer tank, the buffer tank is provided with a first cooler, a second cooler is arranged in the medicine tank, the first cooler and the second cooler are both communicated with the cooling assembly, the vacuum generation assembly comprises a venturi ejector and an injection pipe connected with the venturi ejector, the air inlet pipeline penetrates through the buffer tank and is communicated with the venturi ejector, the injection pipe is arranged in the air inlet pipeline, the tail end of the injection pipe penetrates through the air inlet pipeline and the buffer tank and extends into the medicine tank, the air inlet pipeline is provided with a check valve, the medicine tank is communicated with the venturi ejector through a pipeline provided with a jet circulating pump, the top of the buffer tank is provided with an air outlet, and vacuum meters are respectively arranged on the pipeline connecting the medicine tank with the venturi ejector and in the buffer tank.
7. The nitrogen oxide tail gas treatment system of claim 6, wherein the water injection vacuum unit is a three-stage series water injection vacuum unit.
8. The nitrogen oxide tail gas treatment system of claim 1, wherein the spray packed tower comprises a lower spray tower gas inlet, an upper spray tower gas outlet, a packing layer between the spray tower gas inlet and gas outlet, and a first liquid distributor between the packing layer and gas outlet, wherein the first liquid distributor is communicated with a medicine box of the spray packed tower.
9. The nitrogen oxide tail gas treatment system of claim 1, wherein the flue gas adsorption tower comprises a lower flue gas adsorption tower gas inlet, an upper flue gas adsorption tower gas outlet, and a plurality of layers of packing layers between the flue gas adsorption tower gas inlet and the gas outlet, a demister is arranged at the flue gas adsorption tower gas outlet, a second liquid distributor is arranged above each layer of packing layer, and the second liquid distributors are communicated with a medicine box of the flue gas adsorption tower.
10. The nitrogen oxide tail gas treatment system of claim 9, wherein the lower portion of the flue gas adsorption tower is further provided with a second gas inlet in communication with a plant environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122796501.3U CN217613948U (en) | 2021-11-16 | 2021-11-16 | Nitrogen oxide tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122796501.3U CN217613948U (en) | 2021-11-16 | 2021-11-16 | Nitrogen oxide tail gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217613948U true CN217613948U (en) | 2022-10-21 |
Family
ID=83619645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122796501.3U Active CN217613948U (en) | 2021-11-16 | 2021-11-16 | Nitrogen oxide tail gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217613948U (en) |
-
2021
- 2021-11-16 CN CN202122796501.3U patent/CN217613948U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114225671B (en) | Nitrogen oxide tail gas treatment process | |
| CN103920384B (en) | A kind of non-pressure process absorbs the equipment of high concentration nitrogen oxide | |
| CN207042222U (en) | Chlorine dioxide gaseous oxidation denitration integrated device | |
| CN201410354Y (en) | Waste gas absorption device for nitrate production | |
| CN105536467A (en) | Flue gas purification device and method combining photo-catalytic oxidization and double cyclic absorption | |
| CN110898620B (en) | Spray type waste gas purifying device | |
| CN101879403B (en) | Multifunctional reaction tank and purification process thereof for flue gas desulfurization and denitrification | |
| CN108380018B (en) | Nitrogen oxide absorption device and method for realizing absorption product separation by using same | |
| WO2021243726A1 (en) | Purification method for flue gas desulfurization, denitrification, and mercury removal, and device | |
| CN206631419U (en) | A kind of desulfuring and denitrifying apparatus based on low temperature plasma and catalyzing cooperation | |
| CN210674791U (en) | Wet flue gas desulfurization denitration absorbing device | |
| CN104212497B (en) | Add alkali decompression type device and its application method for coke oven gas desulfurization | |
| CN208449039U (en) | Cokingization produces exhaust gas purification system | |
| CN217613948U (en) | Nitrogen oxide tail gas treatment system | |
| CN1177755C (en) | Preparation equipment of high-purity chlorinedioxide stable liquor and its preparation process | |
| CN210356635U (en) | Nitrogen oxide waste gas purification combination equipment containing acidic gas | |
| CN215208573U (en) | High ammonia wastewater blows system of taking off | |
| CN213314251U (en) | Nitrogen oxide containing production waste gas treatment system | |
| CN212348292U (en) | Denitration system for flue gas denitration by using ozone and packed tower | |
| CN212701281U (en) | Denitration system for flue gas denitration by utilizing ozone and turbulent ball tower | |
| CN212348293U (en) | Denitration system for flue gas denitration by using ozone and spray tower | |
| CN206746284U (en) | A kind of flue gas during smelting desulfuring and denitrifying apparatus | |
| CN202356010U (en) | Flue gas desulfurization and denitration integrated device | |
| CN112755745A (en) | VOCs administers and uses heterogeneous oxidation deodorization tower | |
| CN221015331U (en) | Hydrogen bromide tail gas absorbing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |