CN210410149U - High-efficient desorption equipment of nitrogen oxide that gaseous phase oxidation liquid phase reduction allies oneself with usefulness - Google Patents
High-efficient desorption equipment of nitrogen oxide that gaseous phase oxidation liquid phase reduction allies oneself with usefulness Download PDFInfo
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- CN210410149U CN210410149U CN201921004230.XU CN201921004230U CN210410149U CN 210410149 U CN210410149 U CN 210410149U CN 201921004230 U CN201921004230 U CN 201921004230U CN 210410149 U CN210410149 U CN 210410149U
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Abstract
The utility model relates to a gas phase oxidation liquid phase reduction combined nitrogen oxide high-efficiency removal device, which comprises an oxidation part and a reduction part; the oxidation part comprises an oxidation tower, a chlorine-containing oxidation liquid medicine storage tank and an acid liquid medicine storage tank; the chlorine-containing oxidizing liquid medicine storage tank and the acid liquid medicine storage tank are communicated with a first bottom liquid storage tank of the oxidation tower; the reduction part comprises a reduction tower,A reducing liquid medicine storage tank and an alkali liquor medicine storage tank; the utility model has simple structure, can efficiently purify the waste gas containing nitrogen oxide, NOXThe total removal rate reaches 95 percent. Compared with the conventional design, the equipment is simultaneously provided with the chlorine-containing oxidizing solution storage tank and the acid solution storage tank and is provided with the oxidation reactor, and the device can generate enough amount of ClO2Gas, make ClO2The gas is subjected to gas phase oxidation with NO in the gas phase in the presence of water, thereby more fully oxidizing NO to NO2The NO removal efficiency and effect are improved, and NO is removed more efficiently and thoroughly.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, especially, relate to a high-efficient desorption equipment of nitrogen oxide of gas phase oxidation liquid phase reduction antithetical couplet usefulness.
Background
The industries of semiconductors, photovoltaics and the like can generate a large amount of waste gas containing nitrogen oxides in production; if the waste gas is directly discharged without being treated, the waste gas can cause harm to the environment and is not beneficial to human health; the prior treatment process mainly comprises the step of oxidizing NO in the waste gas into NO by using an oxidant or an acid solution2(ii) a Then using alkali liquor and reducing agent to make NO2Reduction to N2Discharging; however, NO is hardly dissolved in water, so that the reaction efficiency of NO with an oxidant solution or an acid solution is low, and a large amount of NO which cannot be removed by oxidation is discharged, thereby affecting the effect of waste gas treatment. Therefore, the utility model aims to solve the problem of providing a nitrogen oxide removing device which can effectively oxidize and remove nitric oxide and has good waste gas purification effect.
Disclosure of Invention
The utility model aims to overcome the weak point of prior art, provide a nitrogen oxide desorption equipment that can effective oxidation get rid of nitric oxide, exhaust purification is effectual.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a high-efficient desorption equipment of nitrogen oxide that gas phase oxidation liquid phase reduction allies oneself with uses which characterized in that: comprises an oxidation part and a reduction part; the oxidation part comprises an oxidation tower, a chlorine-containing oxidation liquid medicine storage tank and an acid liquid medicine storage tank; a first bottom liquid storage tank, a first air inlet, a first filler layer, a first spraying system and a first air outlet are arranged in the oxidation tower from bottom to top; the chlorine-containing oxidizing solution medicine storage tank and the acid solution medicine storage tank are communicated with the first bottom liquid storage tank through pipelines; the first bottom liquid storage tank is also communicated with the first spraying system through a pipeline; the reduction part comprises a reduction tower, a reduction liquid medicine storage tank and an alkali liquor medicine storage tank; a second bottom liquid storage tank, a second air inlet, a second filler layer, a second spraying system and a second air outlet are arranged in the reduction tower from bottom to top; the reducing liquid medicine storage tank and the alkali liquor medicine storage tank are communicated with a second bottom liquid storage tank through pipelines; the second bottom liquid storage tank is also communicated with a second spraying system through a pipeline; the first air outlet is communicated with the second air inlet through a pipeline.
Preferably, the oxidation part further comprises an oxidation reactor; the chlorine-containing oxidation liquid medicine storage tank and the acid liquid medicine storage tank are communicated with the liquid inlet end of the oxidation reactor through pipelines, and the first bottom liquid storage tank is communicated with the liquid outlet end of the oxidation reactor through a pipeline.
As a more preferable scheme, a venturi negative pressure mixer is arranged on a pipeline between the first bottom liquid storage tank and the first spraying system; the venturi negative pressure mixer is provided with a nozzle, a diffusion pipe and an air guide pipe; the nozzle is communicated with a first bottom liquid storage tank through a pipeline, the gas guide pipe is communicated with a gas outlet at the top of the oxidation reactor through a gas negative pressure conveying pipe, and the diffusion pipe is communicated with a first spraying system through a pipeline.
In a more preferred embodiment, the oxidation reactor is provided with a first pH meter and a first ORP meter.
As a more preferred solution, the oxidation reactor is provided with a mixing device.
As a more preferred aspect, the mixing device is a stirrer.
As a preferable scheme, a first demisting layer is arranged between the first spraying system and the first air outlet in the oxidation tower; and a second demisting layer is arranged between the second spraying system and the second air outlet in the reduction tower.
As a preferable scheme, the first packing layer and the second packing layer are both composed of a plurality of packing units, and the packing units are provided with a plurality of conical thin columns extending towards the interior of the packing units.
As a preferable scheme, the first spraying system and the second spraying system are both provided with a single wide-angle high-flow solid spraying spray header.
Preferably, a second pH meter and a second ORP meter are disposed on the second bottom liquid storage tank.
In the existing design, the unnecessary loss of the oxidizing agent and the acid liquor caused by the reaction of the chlorine-containing oxidizing agent and the acid liquor is worried about, so that the NO oxidation effect is deteriorated; therefore, the conventional equipment is not provided with the chlorine-containing oxidizing solution storage tank and the acid solution storage tank at the same time, and the chlorine-containing oxidizing agent is prevented from contacting the acid solution in the structural arrangement; however, in fact, NO reacts only with chlorine-containing oxidizing agent solutions and acid solutions with low efficiency, since NO is practically insoluble in water; the chlorine-containing oxidizing agent reacts with the acid solution to produce gaseous oxychloride, such as ClO2A gas; ClO2The generation of such gases may be by gas phase oxidation with gaseous NO in the presence of water, in which the NO gas is oxidized to NO as compared to oxidation by a liquid phase chlorine-containing oxidant solution or acid solution2The efficiency is higher, and the oxidation is more sufficient; the gas phase oxidation reaction mechanism is as follows:
2NO（gas)+ClO2（gas)+H2O→NO2+HCl+HNO3。
the utility model has the advantages of: provides a nitrogen oxide removing device which can effectively remove nitric oxide through oxidation and has good waste gas purification effect.
(1) The equipment has simple structure, and can efficiently purify the waste gas containing nitrogen oxide, NOXThe total removal rate reaches 95 percent.
(2) Compared with the conventional design that the chlorine-containing oxidizing solution medicine storage tank and the acid solution medicine storage tank are not arranged at the same time and the contact between the chlorine-containing oxidizing agent and the acid solution is avoided, the equipment is simultaneously provided with the chlorine-containing oxidizing agentThe chlorine oxidation liquid storage tank and the acid liquid storage tank are arranged in combination with an oxidation reactor for the reaction of chlorine-containing oxidizing agent and acid liquid, and the arrangement can generate enough ClO2Gas, make ClO2The gas is subjected to gas phase oxidation with NO in the gas phase in the presence of water, thereby more fully oxidizing NO to NO2The method improves the NO removal efficiency and effect, enables NO to be removed more efficiently and thoroughly, and further improves the purification rate of the waste gas.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Fig. 2 is the schematic structural diagram of the venturi negative pressure mixer of the present invention.
Fig. 3 is a schematic structural diagram of the packing unit of the present invention.
Fig. 4 is a schematic top view of the packing unit of the present invention.
FIG. 5 is a schematic structural view of the first defogging layer of the present invention
In the figure: 1 is an oxidation part, 10 is an oxidation tower, 101 is a first bottom liquid storage tank, 102 is a first gas inlet, 103 is a first filler layer, 104 is a first spraying system, 105 is a first defogging layer, 106 is a first gas outlet, 107 is a first circulating pump, 11 is a chlorine-containing oxidation liquid medicine storage tank, 111 is a first liquid adding pump, 12 is an acid liquid medicine storage tank, 121 is a second liquid adding pump, 13 is an oxidation reactor, 131 is an oxidation reactor liquid inlet end, 132 is an oxidation reactor liquid outlet end, 133 is an oxidation reactor gas outlet, 134 is a gas negative pressure conveying pipe, 135 is a first pH detection meter, 136 is a first ORP detection meter, 137 is a stirrer, 14 is a Venturi negative pressure mixer, 141 is a nozzle, 142 is a diffusion pipe, 143 is a gas guide pipe, 2 is a reduction part, 20 is a reduction tower, 201 is a second bottom liquid storage tank, 202 is a second filler layer, 203 is a second spraying system, 204 is a second spraying system, 205 is a second defogging layer, 206 is a second air outlet, 207 is a second circulating pump, 208 is a second pH detector, 209 is a second ORP detector, 21 is a reducing liquid storage tank, 211 is a third charging pump, 22 is an alkali liquid storage tank, 221 is a fourth charging pump, 30 is a packing unit, 301 is a grid sheet layer, and 302 is a tapered thin column.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings and examples, which are given by way of illustration only, not limitation, and are not intended to limit the scope of the invention. The structures, connections and methods not described in detail in the present application are all understood to be common general knowledge in the art. It should also be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1-5, a high-efficiency nitrogen oxide removal device combining gas phase oxidation and liquid phase reduction comprises an oxidation part 1 and a reduction part 2.
The oxidation part 1 comprises an oxidation tower 10, a chlorine-containing oxidation liquid medicine storage tank 11, an acid liquid medicine storage tank 12, an oxidation reactor 13 and a Venturi negative pressure mixer 14; a first bottom liquid storage tank 101, a first air inlet 102, a first filler layer 103, a first spraying system 104, a first demisting layer 105 and a first air outlet 106 are arranged in the oxidation tower 10 from bottom to top; the venturi negative pressure mixer 14 is an ejector and is provided with a nozzle 141, a diffusion pipe 142 and an air duct 143; the nozzle 141 of the venturi negative pressure mixer 14 is communicated with the first bottom liquid storage tank 101 through a pipeline, and the diffusion pipe 142 of the venturi negative pressure mixer is communicated with the first spraying system 104 through a pipeline; the chlorine-containing oxidizing solution storage tank 11 and the acid solution storage tank 12 are respectively communicated with a liquid inlet end 131 of the oxidation reactor 13 through pipelines (the pipelines are both introduced into the oxidation reactor 13), and meanwhile, the oxidation reactor 13 is also provided with a liquid outlet end 132 and is communicated with the first bottom liquid storage tank 101 through a pipeline; the top of the oxidation reactor 13 is provided with an air outlet 133 which is communicated with an air duct 143 through an air negative pressure conveying pipe 134.
The oxidation reactor 13 is further provided with a first pH meter 135, a first ORP meter 136, and a stirrer 137; the first pH meter 134 and the first ORP meter 135 are used for monitoring the pH value and the ORP value of the liquid inside the oxidation reactor 13, and the agitator 136 is used for mixing the liquid inside the oxidation reactor 13.
The reduction part 2 comprises a reduction tower 20, a reduction solution medicine storage tank 21 and an alkali liquor medicine storage tank 22; a second bottom liquid storage tank 201, a second air inlet 202, a second filler layer 203, a second spraying system 204, a second demisting layer 205 and a second air outlet 206 are arranged in the reduction tower 20 from bottom to top; the reducing liquid medicine storage tank 21 and the alkali liquor medicine storage tank 22 are respectively communicated with the second bottom liquid storage tank 201 through pipelines; the second bottom liquid storage tank 201 is also communicated with a second spraying system 204 through a pipeline; meanwhile, a second pH detector 208 and a second ORP detector 209 are arranged on the second bottom liquid storage tank 201; in addition, the first air outlet 106 and the second air inlet 202 are communicated through a pipeline.
The tower bodies of the oxidation tower 10 and the reduction tower 20 are made of glass fiber reinforced plastic materials, and the materials are light in weight, high in specific strength and good in corrosion resistance.
The first packing layer 103 and the second packing layer 203 are both composed of a plurality of hexagonal column-shaped packing units 30, and a plurality of grid sheet layers 301 parallel to the cross section are arranged in each packing unit 30; the grid sheets 301 are provided with a plurality of tapered pillars 302 extending vertically towards the interior of the packing unit 30 (i.e. the tapered pillars 302 on the top grid sheet 301 extend vertically downwards; the tapered pillars 302 on the bottom grid sheet 301 extend vertically upwards; the tapered pillars 302 on the middle grid sheet 301 extend vertically upwards and downwards at the same time); the arrangement can improve the effective mass transfer specific surface of the filler (up to 170M)3/M2) The probability of gas-liquid contact is greatly enhanced, the turbulence degree is increased, and the reaction is completely carried out.
The first spraying system 104 and the second spraying system 204 are both provided with a single wide-angle large-flow solid spraying spray header; the spraying liquid can be uniformly and rightly covered on the upper surface of the packing layer (103, 203), and the ineffective wall flow sprayed on the tower wall is not generated; not only can save the water pump water yield, and can promote effective spraying rate thereby ensured to spray liquid and nitrogen oxide high efficiency contact reaction.
The first demisting layer 105 and the second demisting layer 205 are both provided with wire mesh demisters for capturing mist drops with the particle size of more than or equal to 1 mu m and returning the mist drops to the tower, so that the entrainment of water mist and acid mist at the air outlets (106, 206) is greatly reduced. Meanwhile, the first demisting layer 105 and the second demisting layer 205 both have a reducing structure design (namely a concentric reducer structure), which is beneficial to improving the gas flow speed.
In addition, a chlorine-containing oxidizing solution medicine storage tank 11, an acid solution medicine storage tank 12, a reducing solution medicine storage tank 21 and an alkali solution medicine storage tank 22 are respectively provided with a first liquid adding pump 111, a second liquid adding pump 121, a third liquid adding pump 211 and a fourth liquid adding pump 221; a first circulating pump 107 and a second circulating pump 207 are respectively arranged on a pipeline between the venturi negative pressure mixer 14 and the first bottom liquid storage tank 101 and a pipeline between the second spraying system 204 and the second bottom liquid storage tank 201.
The working principle of the device is as follows:
(1) chlorine-containing oxidizing liquid (such as NaClO, NaClO)2、NaClO3、NaClO4Aqueous solution of (c)) and acid solutions (e.g.: h2SO4、HCl、HNO3) Respectively enters the oxidation reactor 13 through a pipeline under the action of the first liquid adding pump 111 and the second liquid adding pump 121, and is mixed and reacted to generate ClO2A gas; reaction mechanism (with NaClO)2And H2SO4For example) as follows:
4NaClO2+2H2SO4→HCl+2ClO2（gas)+2Na2SO4+HClO3+2H2O；
meanwhile, the first pH detector 135 and the first ORP detector 136 can accurately control the pH value in the oxidation reactor 13 to be less than or equal to 5 and the ORP to be more than or equal to 600; thereby being more beneficial to gas ClO2Generating;
generated ClO2The gas enters the venturi negative pressure mixer 14 through the gas negative pressure delivery pipe 134; the generated hydrochloric acid solution, chlorine-containing oxidation solution which is not completely reacted, and acid solution enter the first bottom reservoir 101 through the pipeline to become a part of the circulating washing solution.
(2) The circulating wash liquor is first conveyed into the venturi negative pressure mixer 14 by the action of the first circulation pump 107 at a liquid flow rate of 30m square metre/h; circulating the scrubbing liquid and ClO in the Venturi negative pressure mixer 142Gas phaseMixing, wherein the two are mixed vigorously and discharged at a pressure higher than atmospheric pressure; this arrangement is not only advantageous for improving ClO2The mobility of the molecule also promotes the ClO2A large amount of atomization, thereby improving ClO2The contact probability of the NO after entering the oxidation tower 10 promotes the ClO2The reaction of the gas with NO; simultaneously promotes the chlorine-containing oxidizing agent and the acid liquor which are not completely reacted to further react to generate more ClO2A gas; the mixed gas and liquid stream is sprayed out through a first spraying system 104;
meanwhile, the waste gas containing the nitrogen-oxygen compound enters the oxidation tower 10 from the first gas inlet 102 and moves upwards, and the gas flow speed is 1.5 m/s; the waste gas contacts with the sprayed gas-liquid mixed fluid in the reverse direction at the first filler layer 103 to generate gas phase oxidation reaction, and the reaction equation is as follows:
2NO（gas)+ClO2（gas)+H2O→NO2+HCl+HNO3；
exhaust gases after reaction (in this case substantially NO)2) Continuing to move upwards; when the gas passes through the first demisting layer 105, the gas flow rate is increased to 2.5-3m/s due to the diameter reduction of the demisting layer; the demisting efficiency is highest at the flow speed, so that the removal of the fog drops in the waste gas is facilitated; and the circulating liquid carries the generated acid liquid back to the first bottom reservoir 101.
(3) The waste gas enters the reduction tower 20 from the oxidation tower 10 through a pipeline (the gas flow rate is 1.5 m/s) and moves upwards; simultaneously reducing liquid (such as aqueous solutions of sulfite, thiosulfate, sulfide and hydrosulfide, wherein the sulfite comprises sodium sulfite, potassium sulfite and ammonium sulfite, the thiosulfide comprises sodium thiosulfate, potassium thiosulfate and ammonium thiosulfate, the sulfide comprises sodium sulfide, potassium sulfide and ammonium sulfide, the hydrosulfide comprises sodium hydrosulfide, potassium hydrosulfide and ammonium hydrosulfide) and alkali liquor (such as NaOH, KOH and CaOH) respectively enter the second bottom liquid storage tank 201 under the action of the third liquid adding pump 211 and the fourth liquid adding pump 221 to become a part of the circulating washing liquid; and the second spraying system 204 is driven by a second circulating pump 207 to spray the liquid, wherein the liquid flow rate is 30m square meter per square meter;
the waste gas and the circulating liquid reversely contact at the second packing layer 203 to generate liquid phase reduction reaction, and the reaction equation is as follows (taking NaOH and NaHS as examples):
2NO2+NaHS+NaOH→Na2SO4+H2O+N2；
the waste gas after reaction is mainly gas N2Substantially removing the nitrogen oxides; the waste gas passes through the second demisting layer 205, and demisting is carried out after the flow rate is increased to 2.5-3 m/s; discharging the demisted waste gas; meanwhile, the circulating liquid together with the generated salt falls back to the second bottom liquid storage tank 201;
a second pH detector 208 and a second ORP detector 209 are arranged on the second bottom liquid storage tank 201 and used for monitoring the pH value and the ORP value in the second bottom liquid storage tank 201, so that the effect of treating nitrogen oxides by circulating the washing liquid every time is ensured; in order to ensure that the liquid phase reduction reaction can be carried out efficiently, the pH value is controlled to be more than or equal to 12, and the ORP is controlled to be less than or equal to-500.
The application example of the device is as follows:
example 1
NO generated by nitric acid wet etching of silicon wafer and nitric acid wet etching of glass substrate in certain electronic industryXAn exhaust gas; the equipment is adopted for processing: wherein the air volume of the waste gas is 22000 CMH.
And (3) first detection:
NO inlet gas concentration 246.4mg/m3，NO2The inlet gas concentration is 39.8mg/m3Total NOXIntake air concentration 417.7mg/m3(ii) a After being processed by the equipment, the NO outlet concentration is 0.0mg/m3，NO2Outlet concentration 1.2mg/m3，NOXOutlet concentration 1.2mg/m3；NOXThe total removal rate reaches 99.7 percent.
And (3) second detection:
NO intake concentration 326.8mg/m3，NO2The intake air concentration is 54.4mg/m3Total NOXThe intake air concentration is 555.5mg/m3(ii) a After being processed by the equipment, the NO outlet concentration is 5.4mg/m3，NO2Outlet concentration 20.1mg/m3，NOXOutlet concentration 28.3mg/m3；NOXThe total removal rate reaches 94.9 percent.
And (3) third detection:
NO inlet gas concentration 246.4mg/m3，NO2The inlet air concentration is 54.8mg/m3Total NOXThe intake air concentration is 432.7mg/m3(ii) a After the treatment of the equipment, the NO outlet concentration is 6.7mg/m3，NO2Outlet concentration 8.8mg/m3，NOXOutlet concentration 19.1mg/m3；NOXThe total removal rate reaches 95.6 percent.
And (4) fourth detection:
NO intake concentration 358.9mg/m3，NO2The intake air concentration is 72.5mg/m3Total NOXIntake air concentration 622.8mg/m3(ii) a After being processed by the equipment, the NO outlet concentration is 9.4mg/m3，NO2Outlet concentration 0.0mg/m3，NOXOutlet concentration 14.4mg/m3；NOXThe total removal rate reaches 97.7 percent.
Example 2
NO produced in a noble metal smelting processXAn exhaust gas; the equipment is adopted for processing: wherein the air volume of the waste gas is 6000 NCMH.
NO intake concentration 1619mg/m3，NO2Intake air concentration 266mg/m3(ii) a After being processed by the equipment, the NO outlet concentration is 3.0mg/m3，NO2Outlet concentration 0.0mg/m3(ii) a The NO removal rate reaches 99.8 percent, and NO2The removal rate reaches 100 percent.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a high-efficient desorption equipment of nitrogen oxide of gas phase oxidation liquid phase reduction antithetical couplet usefulness which characterized in that: comprises an oxidation part and a reduction part; the oxidation part comprises an oxidation tower, a chlorine-containing oxidation liquid medicine storage tank and an acid liquid medicine storage tank; a first bottom liquid storage tank, a first air inlet, a first filler layer, a first spraying system and a first air outlet are arranged in the oxidation tower from bottom to top; the chlorine-containing oxidizing solution medicine storage tank and the acid solution medicine storage tank are communicated with the first bottom liquid storage tank through pipelines; the first bottom liquid storage tank is also communicated with the first spraying system through a pipeline; the reduction part comprises a reduction tower, a reduction liquid medicine storage tank and an alkali liquor medicine storage tank; a second bottom liquid storage tank, a second air inlet, a second filler layer, a second spraying system and a second air outlet are arranged in the reduction tower from bottom to top; the reducing liquid medicine storage tank and the alkali liquor medicine storage tank are communicated with a second bottom liquid storage tank through pipelines; the second bottom liquid storage tank is also communicated with a second spraying system through a pipeline; the first air outlet is communicated with the second air inlet through a pipeline.
2. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 1, characterized in that: the oxidation section further comprises an oxidation reactor; the chlorine-containing oxidation liquid medicine storage tank and the acid liquid medicine storage tank are communicated with the liquid inlet end of the oxidation reactor through pipelines, and the first bottom liquid storage tank is communicated with the liquid outlet end of the oxidation reactor through a pipeline.
3. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 2, characterized in that: a venturi negative pressure mixer is arranged on a pipeline between the first bottom liquid storage tank and the first spraying system; the venturi negative pressure mixer is provided with a nozzle, a diffusion pipe and an air guide pipe; the nozzle is communicated with a first bottom liquid storage tank through a pipeline, the gas guide pipe is communicated with a gas outlet at the top of the oxidation reactor through a gas negative pressure conveying pipe, and the diffusion pipe is communicated with a first spraying system through a pipeline.
4. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 2, characterized in that: the oxidation reactor is provided with a first pH detector and a first ORP detector.
5. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 2, characterized in that: the oxidation reactor is provided with a mixing device.
6. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 5, characterized in that: the mixing device is a stirrer.
7. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 1, characterized in that: a first demisting layer is arranged between the first spraying system and the first air outlet in the oxidation tower; and a second demisting layer is arranged between the second spraying system and the second air outlet in the reduction tower.
8. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 1, characterized in that: the first packing layer and the second packing layer are both composed of a plurality of packing units, and the packing units are provided with a plurality of conical thin columns extending towards the interior of the packing units.
9. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 1, characterized in that: the first spraying system and the second spraying system are both provided with a single wide-angle large-flow solid spraying spray head.
10. The gas phase oxidation-liquid phase reduction combined nitrogen oxide high-efficiency removal equipment according to claim 1, characterized in that: and a second pH detector and a second ORP detector are arranged on the second bottom liquid storage tank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117000026A (en) * | 2023-08-28 | 2023-11-07 | 江苏源一工程科技有限公司 | Nitrogen-containing waste gas treatment system |
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| CN117000026A (en) * | 2023-08-28 | 2023-11-07 | 江苏源一工程科技有限公司 | Nitrogen-containing waste gas treatment system |
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