CN118904051A - Nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system for treating waste by waste - Google Patents
Nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system for treating waste by waste Download PDFInfo
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- CN118904051A CN118904051A CN202411033710.4A CN202411033710A CN118904051A CN 118904051 A CN118904051 A CN 118904051A CN 202411033710 A CN202411033710 A CN 202411033710A CN 118904051 A CN118904051 A CN 118904051A
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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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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/78—Liquid phase processes with gas-liquid contact
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- B01D—SEPARATION
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
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Abstract
The invention belongs to the technical field of industrial waste gas treatment and organic pollutant treatment, and particularly relates to a waste-treatment nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system, which comprises an enameled wire production system, wherein an exhaust pipeline of the enameled wire production system is provided with a tail gas drying and filtering mechanism and a nitric oxide oxidation assembly, wherein the tail gas drying and filtering mechanism is used for treating tail gas generated in the enameled wire production process; the concentration of NO in the tail gas is reduced in the tail gas emission process by arranging the catalytic oxidation box and the spray tower; by arranging an acid-base resistant pump, the dilute nitric acid aqueous solution obtained by the reaction of nitrogen dioxide oxidized by NO in the spray tower and spray water is recycled, so that the secondary recycling of resources is realized; by arranging the phenol absorption tower and the recovery tank, benzene pollutants in the tail gas generated in the production process of the enameled wire, such as phenol and recovered dilute nitric acid are further reacted (waste is treated by waste) to recover nitrophenol, and the pollution to phenol and NOx in the prior art is changed.
Description
Technical Field
The invention belongs to the technical field of industrial waste gas treatment and organic pollutant treatment, and particularly relates to a waste-treatment nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system.
Background
In the production process of the enamelled wire industry, a large amount of NOx and benzene VOCs (such as phenol) are generated, and the pollutants not only cause serious harm to the environment, but also have great threat to human health. In the prior art, the treatment method for NOx and phenol needs individual treatment, the effect is not ideal, and the cost is high. Therefore, development of an efficient, simple and low-cost comprehensive treatment process is urgent.
In view of this, we propose an absorption phase change treatment system for treating waste nitrogen oxides and benzene-based VOCs pollutants with waste.
Disclosure of Invention
The invention aims to provide a waste treatment nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system, and provides a high-efficiency, simple and low-cost waste treatment comprehensive treatment process, which can simultaneously treat NOx and phenol generated in the production process of enameled wires, achieve environmental protection emission standards and realize waste recycling.
In view of this, the invention provides a nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system for treating waste with waste, which is connected with an enameled wire production system, and further comprises:
a tail gas stoving filter mechanism and nitric oxide oxidation subassembly for handling the tail gas that produces among the enameled wire production process, the right side of nitric oxide oxidation subassembly is connected with the spray column that is used for reacting nitrogen dioxide and water, the right side of spray column is provided with the nitrogen dioxide absorption tower, the right side of nitrogen dioxide absorption tower is provided with the phenol absorption tower that is used for carrying out absorbing to benzene series VOCs, the right side of phenol absorption tower is provided with the recovery tank that is used for retrieving phenol.
In the above technical scheme, further, a recycle component for detecting that NO exceeding the set concentration in the spray tower is led into the nitric oxide oxidation component again is arranged between the spray tower (11) and the nitric oxide oxidation component.
In the above technical scheme, further, be provided with flue one between tail gas stoving filter mechanism and the nitric oxide oxidation subassembly, tail gas stoving filter mechanism's left side is provided with flue two, and flue two's the other end extends to enameled wire production system's inner chamber and is fixed with the gas collecting channel, tail gas stoving filter mechanism includes electrostatic precipitator, stoving case and electric heating pipe, stoving case fixed mounting is at electrostatic precipitator's left side air inlet end, stoving incasement fixed mounting has the electric heating pipe that is evenly distributed, flue two's one end is linked together with the stoving case, nitric oxide oxidation subassembly includes catalytic oxidation case, catalytic oxidation case is rectangular form structure, and catalytic oxidation case's lateral wall has seted up a plurality of slots that are evenly distributed, the catalyst filling layer is installed in the slot interpolation, electrostatic precipitator is linked together through flue one with catalytic oxidation case.
In the above technical scheme, further, the spray column is tower column structure, be provided with first spray assembly in the spray column, first spray assembly includes:
Limiting plate, limiting plate fixed mounting is at the inner chamber of spray column, and the lateral wall of limiting plate closely laminates with the inner wall of spray column, the lower surface of limiting plate is provided with and is annular shunt tubes, the last fixed surface of shunt tubes installs a plurality of spray pipes that are circumference equidistant distribution, and the top of spray pipe one runs through the lower surface of limiting plate and extends to the top, the equal fixed mounting has the inside hollow spiral pipe of both ends opening in week side of just being located a plurality of spray pipes one of limiting plate on the upper surface of limiting plate, and the play water end of shower head one is located the spiral pipe, the bottom of spiral pipe runs through the upper surface of limiting plate and extends to the inner chamber lower part of spray column, be provided with T shape pipe between spray column and the catalytic oxidation case, the week side of T shape pipe is provided with the oxygenerator, two air inlet ends of T shape pipe are linked together with the gas outlet end and oxygenerator's of catalytic oxidation case respectively, and the equal fixed mounting has on two air inlet ends of T shape pipe, the water outlet of T shape pipe and the inner chamber one end of spray column are connected with the inner chamber of water pump one end of spray column, the inner wall of spray column is connected with the inner chamber of water pump one end of two water pump, the inner wall of spray column is connected with the inner chamber of water pump one end of spray column is connected in proper order.
In the above technical scheme, further, the top of spray column is provided with flue three, and flue three's the other end runs through the outer wall of nitrogen dioxide absorption tower and extends to the inner chamber lower part of nitrogen dioxide absorption tower, install fan one on the flue three, the one end that the flue three is located the nitrogen dioxide absorption tower is fixed with the flow distribution plate one, the flow distribution plate one is inside hollow structure, a plurality of gas outlets that are evenly distributed have been seted up to the lower surface of flow distribution plate one, be provided with the second in the nitrogen dioxide absorption tower and spray the subassembly, the second sprays the subassembly and includes:
The second spraying pipe is arranged right above the first flow dividing plate, the second spraying pipe is of an annular structure, a plurality of spray heads II which are distributed at equal intervals circumferentially are arranged on the lower surface of the second spraying pipe, an alkali liquid storage tank is arranged on the periphery of the nitrogen dioxide absorption tower, an acid-base resistant pump I is arranged in the alkali liquid storage tank, an infusion pipe I is arranged at the output end of the acid-base resistant pump I, and the other end of the infusion pipe I sequentially penetrates through the inner wall of the alkali liquid storage tank and the outer wall of the nitrogen dioxide absorption tower and extends into the nitrogen dioxide absorption tower to be communicated with the two spraying pipes.
In the above technical scheme, further, the top of nitrogen dioxide absorption tower is provided with flue four, and flue four's the other end runs through the outer wall of phenol absorption tower and extends to phenol absorption tower's inner chamber lower part, install fan two on the flue four, flue four is located the one end of phenol absorption tower and is fixed with the flow distribution plate two, the flow distribution plate two is inside hollow structure, a plurality of gas outlets that are evenly distributed have been seted up to the lower surface of flow distribution plate two, be provided with the third in the phenol absorption tower and spray the subassembly, the third sprays the subassembly and includes:
The spray pipe III, the spray pipe III sets up directly over the flow distribution plate II, the spray pipe III is annular structure, the lower surface mounting of spray pipe III has a plurality of shower nozzles three that are circumference equidistant distribution, the week side of phenol absorption tower is provided with the acidizing fluid holding vessel, install acid and alkali resistant pump II in the acidizing fluid holding vessel, the transfer line II is installed to the output of acid and alkali resistant pump II, and the other end of acid and alkali resistant pump II runs through the inner wall of acidizing fluid holding vessel and the outer wall of phenol absorption tower in proper order and extends to in the phenol absorption tower with the spray pipe three-phase intercommunication, the gas vent is installed at the top of phenol absorption tower.
In the above technical scheme, further, be provided with acid and alkali-resistant pump three between spray column and the acidizing fluid holding vessel, acid and alkali-resistant pump three's input and output all are fixed with transfer line three, and the other end of two transfer lines three is linked together with spray column and acidizing fluid holding vessel respectively.
In the above technical scheme, further, the circulation subassembly still includes the top of spray column and be located the week side of flue three and be provided with the back flow that is the reverse L shape, back flow and flue three-phase intercommunication to form T word form structure with flue three, the NO concentration sensor is installed with the air inlet end of the T word pipe that the back flow formed to flue three, the check valve is all symmetrically installed with two gas outlet ends of the T word pipe that the back flow formed to flue three, the other end of back flow is linked together with flue one, and installs the air exhauster near flue one position department on the back flow.
In the above technical scheme, further, be provided with the pan feeding pipe between phenol absorption tower and the recovery pond, the both ends of pan feeding pipe are linked together with the inner chamber lower part of phenol absorption tower and the inner chamber of recovery pond respectively, install the peristaltic pump on the pan feeding pipe, the recovery pond is the inside hollow structure of open top, the recovery pond internal fixation has the baffle, and the baffle is with acidizing chamber and the finished product chamber that the inner chamber of recovery pond was cut apart into, the spout has been seted up to the lower surface of baffle, slidable mounting has the baffle in the spout, just be located the fixed mounting directly over the baffle and have electric putter, and electric putter's telescopic rod end is fixed mutually with the upper surface of baffle, the lower surface of baffle is provided with sealed the pad, the one end of pan feeding pipe is linked together with the acidizing chamber, the recovery pond is fixed with row material pipe in one side of finished product chamber, and installs the relief valve on the row material pipe.
In the above technical scheme, further, the acidizing intracavity of recovery pond is provided with stirring subassembly, stirring subassembly includes:
The automatic stirring device comprises a transverse plate, wherein the transverse plate is fixedly arranged on the upper part of an acidification cavity of a recovery pond, a first support is fixedly arranged at the center of the upper surface of the transverse plate, a second support is symmetrically fixed on the upper surface of the transverse plate and positioned on two sides of the first support, a motor is fixedly arranged on the upper surface of the first support, a driving shaft is rotatably arranged in the motor, an output shaft of the motor penetrates through the upper surface of the first support and extends into the first support to be coaxially connected with the driving shaft, two driving wheels which are vertically distributed are fixedly arranged on the driving shaft, a driven shaft is rotatably arranged in the second support, driven wheels are fixedly arranged on the driven shaft, a belt is arranged between the driving wheels and the driven wheels, the two driving wheels are respectively connected with the driven wheels which correspond to the two sides through belt transmission, a main stirring rod is rotatably arranged on the lower surface of the transverse plate, auxiliary stirring rods are symmetrically arranged on the two sides of the main stirring rod, spiral blades are fixedly arranged on the main stirring rod, the top ends of the two auxiliary stirring rods are respectively coaxially connected with the corresponding auxiliary stirring rods, and a plurality of blades are arranged on the auxiliary stirring rods.
In the above technical scheme, further, the outer surfaces of the main stirring rod, the helical blade, the auxiliary stirring rod and the stirring blade are all sprayed with a compact anti-corrosion layer.
The beneficial effects of the invention are as follows:
1. This with useless nitrogen oxide and benzene series VOCs pollutant absorption phase transition processing system who treats useless through setting up catalytic oxidation case and spray column, utilizes the catalyst filling layer to carry out twice oxidation to the NO in the tail gas that produces in the enameled wire production process, has reduced the tail gas emission in-process, and the concentration of NO in the tail gas has replaced the mode of reduction method in the conventional art through the mode of oxidation method, has utilized the secondary oxidation to solve the problem that prior art is insufficient to NO treatment, treatment effect is poor.
2. According to the nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system for treating waste with waste, NO in the spray tower and partial nitrogen dioxide react with water to obtain dilute nitric acid aqueous solution, and the dilute nitric acid aqueous solution is recycled by arranging the acid-base-resistant pump III, so that secondary recycling of resources is realized.
3. This with useless nitrogen oxide and benzene series VOCs pollutant absorption phase transition processing system who treats useless through setting up nitrogen dioxide absorption tower and phenol absorption tower, carries out abundant absorption and filtration to nitrogen dioxide and benzene series pollutant in the tail gas, has reduced peculiar smell and dust impurity etc. in the tail gas, has reduced the adverse effect of tail gas to the environment.
4. According to the waste-treatment nitrogen oxide and benzene-series VOCs pollutant absorption phase change treatment system, the phenol absorption tower and the recovery tank are arranged, so that benzene-series pollutants in tail gas generated in the production process of enameled wires, such as phenol and recovered dilute nitric acid, are further reacted (waste treatment is carried out) to recover nitrophenol, the mode that in the prior art, when aiming at phenol and NOx, individual treatment is needed is changed, the filtering and treatment effects are excellent, and the cost is low.
5. After nitrogen dioxide reacts with water in the spray tower for the first time, part of NO still exists, when the NO exceeds a certain concentration, the NO is introduced into the nitric oxide oxidation assembly again through the recycling assembly for oxidation reaction again, and the conversion rate is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a tail gas drying and filtering mechanism and a nitric oxide oxidizing assembly according to the present invention;
FIG. 3 is a schematic view of the structure of the oxygenerator and T-tube according to the present invention;
FIG. 4 is a schematic diagram of the structure of the inner chamber of the spray tower according to the present invention;
FIG. 5 is a schematic view of a first spray assembly according to the present invention;
FIG. 6 is a schematic diagram of the structure of the inner cavity of the nitrogen dioxide absorption tower according to the present invention;
FIG. 7 is a schematic view of the structure of the inner chamber of the phenol absorption tower according to the present invention;
FIG. 8 is a schematic view of the structure of the inner cavity of the recovery tank in the invention;
Fig. 9 is a schematic structural view of a stirring assembly in the present invention.
The label in the figure is:
1. An enameled wire production system; 2. electric dust remover; 3. a catalytic oxidation tank; 4. a first flue; 5. a drying box; 6. flue II; 7. a gas collecting hood; 8. a slot; 9. a catalyst filling layer; 10. an electric heating tube; 11. a spray tower; 12. a nitrogen dioxide absorption tower; 13. a phenol absorption column; 14. a recovery pool; 15. a T-shaped pipe; 16. an oxygenerator; 17. a check valve; 18. a first water pump; 19. a water pipe; 20. a flue III; 21. a first fan; 22. a first splitter plate; 23. a second spray pipe; 24. a second nozzle; 25. an alkali liquor storage tank; 26. acid and alkali resistant pump I; 27. a first infusion tube; 28. a flue four; 29. a second fan; 30. a second flow dividing plate; 31. a third spray pipe; 32. a third nozzle; 33. an acid liquid storage tank; 34. acid and alkali resistant pump II; 35. a second infusion tube; 36. acid and alkali resistant pump III; 37. a third infusion tube; 38. an exhaust port; 39. a feeding pipe; 40. a peristaltic pump; 41. a partition plate; 42. a chute; 43. a baffle; 44. an electric push rod; 45. a discharge pipe; 46. a discharge valve; 47. a cross plate; 48. a first bracket; 49. a second bracket; 50. a motor; 51. a driving shaft; 52. a driving wheel; 53. a driven shaft; 54. driven wheel; 55. a belt; 56. a main stirring rod; 57. a helical blade; 58. an auxiliary stirring rod; 59. stirring blades; 60. a limiting plate; 61. a shunt; 62. a first spray pipe; 63. a spiral tube; 64. a first spray head; 65. a water tank.
Detailed Description
The present application is described in further detail below with reference to fig. 1-9.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Example 1:
The embodiment provides a nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system who treats useless with useless, dock in enameled wire production system 1, still include:
A tail gas stoving filter mechanism and nitric oxide oxidation subassembly for handling the tail gas that produces in the enameled wire production process, the right side of nitric oxide oxidation subassembly is provided with and is used for carrying out the spray column 11 of reaction to nitrogen dioxide and water, and the right side of spray column 11 is provided with nitrogen dioxide absorption tower 12, and the right side of nitrogen dioxide absorption tower 12 is provided with and is used for carrying out absorbing phenol absorption tower 13 to benzene series VOCs, and the right side of phenol absorption tower 13 is provided with and is used for retrieving recovery pond 14 to phenol.
A recycle component for re-introducing NO exceeding the set concentration in the spray tower 11 into the nitric oxide oxidation component is also arranged between the spray tower 11 and the nitric oxide oxidation component.
The invention adopts the following steps to carry out comprehensive treatment on NOx and phenol:
Oxidation of no: filtering and collecting NO in the waste gas, oxidizing the NO by a catalyst, and oxidizing the NO into high-oxidation-state nitrogen oxides in sufficient oxygen by an oxygen supplementing and spraying mode so as to facilitate subsequent absorption treatment.
2. Absorption of nitrogen dioxide: nitrogen dioxide is absorbed by the alkaline solution and nitrate or nitrite is produced.
3. Absorption of phenol: the exhaust gas passes through a specially designed absorption tower, and phenol is absorbed by using a specific absorption liquid.
4. Acidification and de-acidification: acidizing and deacidifying the absorbed waste liquid to remove acidic substances generated by NOx, such as: organic acids formed from dilute nitric acid and phenol, such as: nitrophenols.
5. Recovery of nitrophenol: the nitrophenol in the treated mixed waste liquid is recovered through a liquid-liquid extraction process, so that the recycling of resources is realized;
As described above, the present invention provides the following devices for nitrogen oxides and benzene series VOCs contaminants generated in the production process of the enamel wire, respectively: the generated tail gas is collected, dried, filtered and oxidized for the first time by arranging the electric dust collector 2, the catalytic oxidation box 3 and the gas collecting hood 7, so that the NO content in the collected tail gas is reduced, and the subsequent absorption efficiency and effect on NO are improved; by arranging the spray tower 11 and arranging a first spray assembly in the spray tower 11, a small amount of NO still existing in the treated tail gas is subjected to secondary oxidation in an oxygenation and water supplementing mode, so that the conversion rate of the NO is improved; and the recycle component is used for leading the nitrogen dioxide and the water to react for the first time in the spray tower, and then the nitrogen dioxide and the water still have part of NO, when the NO exceeds a certain concentration, the nitrogen dioxide is led into the nitric oxide oxidation component again through the recycle component for oxidation reaction again, so that the conversion rate is improved;
By arranging the nitrogen dioxide absorption tower 12 and the second spraying assembly, the nitrogen dioxide in the gas in the nitrogen dioxide absorption tower 12 is absorbed by spraying alkali liquor by the second spraying assembly, so that the concentration of nitrogen oxides in the tail gas finally discharged is reduced; the phenol absorption tower 13 and the third spray assembly are arranged, the acid-base resistant pump III 36 is arranged between the third spray assembly and the spray tower 11, the dilute nitric acid aqueous solution generated by the reaction in the spray tower 11 is recycled by the acid-base resistant pump III 36, the benzene series VOCs in the gas are absorbed by the acid-base solution sprayed by the third spray assembly, and a small amount of alkaline water mist still existing is neutralized, so that the treatment effect on the benzene series VOCs in the tail gas is improved; by arranging the recovery tank 14 and utilizing a liquid-liquid extraction process, the nitrophenol solution is extracted and separated from the mixed solution, so that the recovery and the utilization of the p-nitrophenol are realized, and the influence of benzene pollutants on the environment is reduced.
Example 2:
The embodiment provides a waste nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system with useless, except including the technical scheme of above-mentioned embodiment, still have following technical characteristics, be provided with flue one 4 between tail gas stoving filter mechanism and the nitric oxide oxidation subassembly, the left side of tail gas stoving filter mechanism is provided with flue two 6, and the other end of flue two 6 extends to the inner chamber of enameled wire production system 1 and is fixed with gas collecting cover 7, tail gas stoving filter mechanism includes electrostatic precipitator 2, stoving case 5 and electric heating pipe 10, stoving case 5 fixed mounting is at the left side air inlet end of electrostatic precipitator 2, fixed mounting has electric heating pipe 10 that is evenly distributed in the stoving case 5, the one end and the stoving case 5 of flue two 6 are linked together, the nitric oxide oxidation subassembly includes catalytic oxidation case 3, catalytic oxidation case 3 is rectangular form structure, and the lateral wall of catalytic oxidation case 3 has offered a plurality of slots 8 that are evenly distributed, the catalyst filling layer 9 is installed in the slot 8 interpolation, electrostatic precipitator 2 is linked together through a 4 with catalytic oxidation case 3.
The exhaust gas is collected through the gas collecting hood 7, sequentially passes through the second flue 6, the drying box 5 and the electric dust collector 2, then enters the catalytic oxidation box 3 through the first flue 4, and is heated and dried by heat generated during the operation of the electric heating pipe 10 when entering the exhaust gas drying and filtering mechanism, so that the humidity in the exhaust gas is reduced, and nitrogen oxides in the exhaust gas are easier to perform oxidation reaction with the catalyst filling layer 9, wherein a plurality of layers of air flow uniformly-distributed plates are arranged in the electric dust collector 2, so that the exhaust gas can be uniformly distributed in the inner cavity of the electric dust collector 2 and is ionized and filtered, and in addition, an active carbon filling layer is further arranged in the electric dust collector 2 to further absorb and filter dust impurities and peculiar smell in the exhaust gas, so that the electric dust collector 2 is well known in the prior art, and the invention is not excessively repeated; the tail gas is filtered and then enters the catalytic oxidation box 3 through the first flue 4, and when the tail gas enters the catalytic oxidation box 3, the tail gas sequentially passes through the multiple layers of catalyst filling layers 9, and NO in the tail gas is oxidized through the catalyst filling layers 9, so that the NO is oxidized into nitrogen oxides in a high oxidation state.
Example 3:
The embodiment provides with useless nitrogen oxide and benzene series VOCs pollutant absorption phase transition processing system who treats useless of useless, except including the technical scheme of above-mentioned embodiment, still has following technical feature, and spray column 11 is tower column structure, is provided with first spray assembly in the spray column 11, and first spray assembly includes:
The limiting plate 60, the limiting plate 60 is fixedly arranged in the inner cavity of the spray tower 11, the side wall of the limiting plate 60 is closely attached to the inner wall of the spray tower 11, the annular shunt tubes 61 are arranged on the lower surface of the limiting plate 60, a plurality of spray pipes one 62 which are circumferentially and equidistantly distributed are fixedly arranged on the upper surface of the shunt tubes 61, the top ends of the spray pipes one 62 penetrate through the lower surface of the limiting plate 60 and extend to the upper side, hollow spiral pipes 63 with two open ends are fixedly arranged on the upper surface of the limiting plate 60 and on the peripheral side of the spray pipes one 62, a plurality of spray heads one 64 which are uniformly distributed are arranged on the spray pipes one 62, the water outlet ends of the spray heads one 64 are positioned in the spiral pipes 63, the bottom ends of the spiral pipes 63 penetrate through the upper surface of the limiting plate 60 and extend to the lower part of the inner cavity of the spray tower 11, A T-shaped pipe 15 is arranged between the spray tower 11 and the catalytic oxidation box 3, an oxygenerator 16 is arranged on the right side of the T-shaped pipe 15, two air inlet ends of the T-shaped pipe 15 are respectively communicated with an air outlet end of the catalytic oxidation box 3 and an output end of the oxygenerator 16, check valves 17 are fixedly arranged on the two air inlet ends of the T-shaped pipe 15, the air outlet end of the T-shaped pipe 15 is communicated with the lower portion of an inner cavity of the spray tower 11, a water tank 65 is arranged on the periphery of the spray tower 11, a water pump I18 is arranged in the water tank 65, a water pipe 19 is arranged at the output end of the water pump I18, and the other end of the water pipe 19 sequentially penetrates through the inner wall of a second infusion pipe 35 and the outer wall of the spray tower 11 and extends to the lower portion of the inner cavity of the spray tower 11, and one end of the water pipe 19 is communicated with the water inlet end of a shunt pipe 61.
The exhaust gas after preliminary oxidation enters the lower part of the inner cavity of the spray tower 11 through the check valve 17, in the process, the oxygenerator 16 works and generates oxygen, the oxygen can enter the inner cavity of the spray tower 11 through the other air inlet end of the T-shaped pipe 15, then the exhaust gas and the oxygen enter the inner cavity of the T-shaped pipe 15 along the openings at the bottom ends of the T-shaped pipes 15, and enter the upper part of the inner cavity of the spray tower 11 through the openings at the top ends of the T-shaped pipes 15, in the process, the first spray assembly works, at the moment, the water pump 18 pumps water in the water tank 65, then the water is conveyed into the shunt pipe 61 through the water pipe 19 and enters the spray pipes 62, then mist-shaped small water drops are formed through the spray nozzles 64 to be combined with the exhaust gas in the inner cavity of the spiral pipe 63, at the moment, the residual NO in the exhaust gas further generates oxidation reaction, and a dilute nitric acid aqueous solution enters the bottom of the inner cavity of the spray tower 11 under the action of gravity;
the chemical reaction equation of the process is as follows:
4NO+3O2+2H2O→4HNO3，
the remaining tail gas then enters the nitrogen dioxide absorber 12 through stack three 20.
Example 4:
the embodiment provides a nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system who treats useless with useless, except including the technical scheme of above-mentioned embodiment, still have following technical characteristics, the top of spray column 11 is provided with flue three 20, and the other end of flue three 20 runs through the outer wall of nitrogen dioxide absorption tower 12 and extends to the inner chamber lower part of nitrogen dioxide absorption tower 12, install fan one 21 on the flue three 20, the one end that flue three 20 is located nitrogen dioxide absorption tower 12 is fixed with division board one 22, division board one 22 is inside hollow structure, a plurality of gas outlets that are evenly distributed have been seted up to division board one 22's lower surface, be provided with the second in the nitrogen dioxide absorption tower 12 and spray the subassembly, the second sprays the subassembly and includes:
The second spraying pipe 23, the second spraying pipe 23 sets up directly over the splitter plate first 22, the second spraying pipe 23 is annular structure, a plurality of shower nozzles second 24 that are circumference equidistant distribution are installed to the lower surface mounting of second spraying pipe 23, the week side of nitrogen dioxide absorption tower 12 is provided with alkali lye holding vessel 25, install acid and alkali resistant pump first 26 in the alkali lye holding vessel 25, the transfer line first 27 is installed to the output of acid and alkali resistant pump first 26, and the other end of transfer line first 27 runs through the inner wall of alkali lye holding vessel 25 and the outer wall of nitrogen dioxide absorption tower 12 in proper order and extends to in the nitrogen dioxide absorption tower 12 and be linked together with the second spraying pipe 23.
When the tail gas enters the nitrogen dioxide absorption tower 12, a second spraying assembly is started, at the moment, an acid-base-resistant pump 26 conveys alkali liquor in an alkali liquor storage tank 25 to a spraying pipe II 23 through a liquid conveying pipe I27, atomized small water drops are formed through a plurality of spray heads II 24, the tail gas spreads upwards through a plurality of air outlets on the lower surface of a flow distribution plate I22 and contacts with the alkali liquor, and in the contact process, nitrogen dioxide in the tail gas reacts with the alkali liquor to generate inorganic nitrate;
in the present invention, the alkali solution in the alkali solution storage tank 25 is NaOH, and the chemical reaction equation of the above process is as follows:
2NO2+2NaOH→NaNO3+NaNO2+H2O，
The remaining tail gas then enters the interior of the phenol absorption column 13 through flue four 28.
Example 5:
The embodiment provides a nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system who treats useless with useless, except including the technical scheme of above-mentioned embodiment, still have following technical characteristics, the top of nitrogen dioxide absorption tower 12 is provided with flue four 28, and the other end of flue four 28 runs through the outer wall of phenol absorption tower 13 and extends to the inner chamber lower part of phenol absorption tower 13, install fan two 29 on the flue four 28, the one end that flue four 28 is located phenol absorption tower 13 is fixed with flow distribution plate two 30, flow distribution plate two 30 is inside hollow structure, a plurality of gas outlets that are evenly distributed have been seted up to flow distribution plate two 30's lower surface, be provided with the third in the phenol absorption tower 13 and spray the subassembly, the third includes:
The spray pipe III 31, the spray pipe III 31 sets up directly over the flow distribution plate II 30, the spray pipe III 31 is the annular structure, the lower surface mounting of spray pipe III 31 has a plurality of shower III 32 that are circumference equidistant distribution, the week side of phenol absorption tower 13 is provided with acidizing fluid holding vessel 33, install acid and alkali resistant pump II 34 in the acidizing fluid holding vessel 33, the transfer line II 35 is installed to the output of acid and alkali resistant pump II 34, and the other end of acid and alkali resistant pump II 34 runs through the inner wall of acidizing fluid holding vessel 33 and the outer wall of phenol absorption tower 13 in proper order and extends to in the phenol absorption tower 13 and be linked together with the spray pipe III 31, gas vent 38 is installed at the top of phenol absorption tower 13.
When the tail gas enters the phenol absorption tower 13, a third spray assembly is started, at the moment, an acid-base resistant pump II 34 conveys acid liquor in an acid liquor storage tank 33 to a spray pipe III 31 through a liquid conveying pipe II 35, atomized small water drops are formed through a plurality of spray heads III 32, the tail gas spreads upwards through a plurality of air outlets on the lower surface of a flow distribution plate II 30 and is contacted with the acid liquor, benzene pollutants in the tail gas react with dilute nitric acid liquor in the contact process to generate a nitrophenol solution, and in addition, a part of nitric acid and sodium hydroxide are neutralized to form sodium nitrate;
in the present invention, the acid in the acid storage tank 33 is a dilute nitric acid aqueous solution, and the chemical reaction equation in the above process is as follows:
C6H5OH+HNO3→C6H5NO3+H2O，
2HNO3+2NaOH→2NaNO3+2H2O，
the treated tail gas is then discharged through a vent 38 at the top of the phenol absorption tower 13.
Example 6:
The embodiment provides a waste treatment nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system, which comprises the technical scheme of the embodiment, and is characterized in that an acid-base resistant pump III 36 is arranged between the spray tower 11 and the acid liquid storage tank 33, the input end and the output end of the acid-base resistant pump III 36 are both fixed with a liquid conveying pipe III 37, and the other ends of the two liquid conveying pipes III 37 are respectively communicated with the spray tower 11 and the acid liquid storage tank 33.
The dilute nitric acid water solution generated by the reaction of NO and water in the spray tower 11 can enter the acid liquid storage tank 33 through the third infusion tube 37 under the action of the third acid and alkali resistant pump 36 and is recycled for the second time.
Example 7:
The embodiment provides a nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system who treats useless with useless, except including the technical scheme of above-mentioned embodiment, still have following technical characteristics, the circulation subassembly includes at the top of spray column 11 and be located the week side of flue three 20 and be provided with the back flow that is the reverse L shape, the back flow is linked together with flue three 20 to form T word column structure with flue three 20, the NO concentration sensor is installed with the air inlet end of the T word pipe that the back flow formed to flue three 20, the check valve is all symmetrically installed with two gas outlet ends of the T word pipe that the back flow formed to flue three 20, the other end and the flue one 4 of back flow are linked together, and be close to flue one 4 positions department installs the air exhauster on the back flow.
The technical scheme in the embodiment 4 is further supplemented:
When the concentration of NO in the mixed gas at the upper part of the inner cavity of the spray tower 11 is higher than 5% of that of the drying box, the NO concentration sensor receives signals and controls the two check valves to work, the check valve at one side close to the nitrogen dioxide absorption tower 12 is in a semi-closed state, the check valve at one side close to the first flue 4 is fully opened, then the air extractor works, the mixed gas discharged from the top of the spray tower 11 is pumped into the first flue 4 again through the return pipe and enters the inner cavity of the catalytic oxidation box 3 again through the first flue 4, so that the NO gas still remained in the mixed gas can be recycled and oxidized secondarily, the NO treatment effect and the conversion efficiency are further improved, and the check valve at one side close to the nitrogen dioxide absorption tower 12 is fully opened and the check valve at one side close to the first flue 4 is fully closed under the conventional state.
Example 8:
the embodiment provides a waste nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system, except for the technical scheme including the embodiment, the following technical characteristics are provided between the phenol absorption tower 13 and the recovery tank 14, the feeding pipe 39 is provided, two ends of the feeding pipe 39 are respectively communicated with the lower part of the inner cavity of the phenol absorption tower 13 and the inner cavity of the recovery tank 14, peristaltic pump 40 is installed on the feeding pipe 39, the recovery tank 14 is of a hollow structure with an opening at the top, a partition board 41 is fixed in the recovery tank 14, the partition board 41 divides the inner cavity of the recovery tank 14 into an acidification cavity and a finished product cavity, a chute 42 is formed in the lower surface of the partition board 41, a baffle 43 is slidably installed in the chute 42, an electric push rod 44 is fixedly installed right above the baffle 43, the telescopic rod end of the electric push rod 44 is fixedly connected with the upper surface of the baffle 43, one end of the feeding pipe 39 is communicated with the acidification cavity, a discharge pipe 45 is fixedly installed on one side of the finished product cavity, and a discharge valve 46 is installed on the discharge pipe 45.
Wherein, the mixed solution enters the acidification cavity in the recovery tank 14 along the feeding pipe 39 under the action of the peristaltic pump 40, and at this time, an acidic reagent is added into the acidification cavity of the recovery tank 14, for example: adjusting the pH value of the acidification cavity of the recovery pond 14 by an aqueous dilute nitric acid solution to precipitate nitrophenol, then performing deacidification treatment, adding an alkaline reagent such as sodium hydroxide solution into the acidification cavity of the recovery pond 14, adjusting the pH value of the waste liquid to be neutral, and removing excessive acidic substances;
the specific reaction conditions of the process are as follows:
Acidulation agent: 2-5wt% of aqueous dilute nitric acid solution;
Adjusting the pH value range: 2-3;
settling time: 30-60 minutes;
Deacidifying reagent: 10-15wt% of sodium hydroxide solution;
final pH range: 6.5-7.5;
Then, the liquid-liquid extraction process is carried out on the nitrophenol in the waste liquid, diethyl ether is added into the waste liquid, the extraction of the nitrophenol is completed through the diethyl ether, in the process, the nitrophenol is transferred from the water phase to the organic phase, so that the separation is realized, then, two electric push rods 44 are started, the telescopic rods of the two electric push rods 44 move upwards and drive a baffle plate 43 to move upwards, the nitrophenol and the diethyl ether which are positioned below can enter a finished cavity of a recovery tank 14, then, the nitrophenol solution is discharged through a discharge pipe 45, and it is worth supplementing that the subsequent process needs a back extraction process of the nitrophenol solution, and the nitrophenol is released from the diethyl ether and re-enters the water phase through adding a proper back extractant such as NH 3·H2O-NH4 Cl buffer, and then, the washing, drying and comparably equivalent processes are carried out, so that the pure nitrophenol can be obtained.
Example 9:
The embodiment provides a nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system who treats useless with useless, except including the technical scheme of above-mentioned embodiment, still has following technical characteristics, is provided with stirring subassembly in the acidizing chamber of recovery pond 14, and stirring subassembly includes:
The horizontal plate 47, the horizontal plate 47 fixed mounting is in the acidizing chamber upper portion of recovery pond 14, the upper surface center department of horizontal plate 47 is fixed with support one 48, the upper surface of horizontal plate 47 and be located the bilateral symmetry of support one 48 and be fixed with support two 49, the upper surface of support one 48 is fixed with motor 50, the driving shaft 51 is installed to the rotation of motor 50, the output shaft of motor 50 runs through the upper surface of support one 48 and extends to support one 48 and be connected with driving shaft 51 coaxial, fixedly mounting has two perpendicular action bars 52 on the driving shaft 51, support two 49 rotation are installed driven shaft 53, fixedly mounting has driven wheel 54 on the driven shaft 53, be provided with belt 55 between action bars 52 and the driven wheel 54, pass through belt 55 transmission connection between two action bars 52 and the corresponding driven wheel 54 of both sides respectively, the lower surface rotation of horizontal plate 47 is installed main puddler 56, and the top and the driving shaft 51 coaxial coupling of main puddler 56 are fixed with helical blade 57 on, the lower surface of horizontal plate 47 and be located the bilateral symmetry of main puddler 56 and be provided with vice puddler 58, the coaxial connection of two vice puddler 58, the top and a plurality of pairs of puddler 58 are installed on the coaxial blade 53 of pairs of corresponding to be connected with respectively on the driven shaft 53.
Wherein, in the acidizing and the in-process of deacidifying, in order to promote the mixing efficiency of acid-alkali lye and mixed solution, the accessible stirring subassembly accelerates, and specific process is as follows:
The motor 50 is started, the output shaft of the motor 50 rotates and drives the driving shaft 51 to rotate, at the moment, the two driving wheels 52 rotate and drive the corresponding driven wheels 54 to rotate through the belt 55, at the moment, the two driven shafts 53 synchronously rotate under the action of the respective driven wheels 54, and the main stirring rod 56 and the two auxiliary stirring rods 58 which are positioned below also respectively rotate along with the driving shaft 51 and the driven shafts 53, so that the mixed solution is stirred, and the pH value adjusting speed in the acidification cavity of the recovery tank 14 is accelerated.
Example 10:
the present embodiment provides a system for absorbing phase change treatment of nitrogen oxides and benzene-based VOCs pollutants by treating waste with waste, which has the following technical features in addition to the technical scheme of the above embodiment, and the outer surfaces of the main stirring rod 56, the helical blade 57, the auxiliary stirring rod 58 and the stirring blade 59 are all sprayed with a dense anti-corrosion layer.
Wherein, through setting up the anticorrosive coating, increased the life of this device stirring subassembly.
Working principle: the tail gas is collected through a gas collecting hood 7, and sequentially passes through a flue II 6, a drying box 5 and an electric dust collector 2, then enters a catalytic oxidation box 3 through a flue I4, in the process, the tail gas is dried, filtered and oxidized for the first time, then enters the lower part of the inner cavity of a spray tower 11 through a check valve 17, in the process, an oxygenerator 16 works and generates oxygen, the oxygen can follow the tail gas through the other gas inlet end of a T-shaped pipe 15 to enter the inner cavity of the spray tower 11, then the tail gas and the oxygen enter the inner cavity of the T-shaped pipe 15 through openings at the bottom ends of a plurality of T-shaped pipes 15, and enter the upper part of the inner cavity of the spray tower 11 through openings at the top ends of the T-shaped pipes 15, in the process, a first spray assembly works, at the moment, a water pump I18 pumps water in a water tank 65, then is conveyed into a shunt pipe 61 through a water pipe 19, and enters a plurality of spray pipes I62, then forms mist-shaped small water beads through a plurality of spray nozzles I64 to be combined with the tail gas in the inner cavity of the spray tower 63, the residual NO in the tail gas further carries out oxidation reaction, and generates nitric acid aqueous solution, and the nitric acid solution enters the inner cavity of the spray tower 11 under the action of gravity of the action of a dilute aqueous solution 12, and enters the bottom of the inner cavity of the spray tower 20;
When the tail gas enters the nitrogen dioxide absorption tower 12, a second spraying assembly is started, at the moment, an acid-base-resistant pump 26 conveys alkali liquor in an alkali liquor storage tank 25 to a spraying pipe II 23 through a liquid conveying pipe I27, atomized small water drops are formed through a plurality of spray heads II 24, the tail gas spreads upwards through a plurality of air outlets on the lower surface of a flow dividing plate I22 and contacts with the alkali liquor, in the contact process, nitrogen dioxide in the tail gas reacts with the nitrogen dioxide to generate inorganic nitrate, and then the rest of the tail gas enters an inner cavity of a phenol absorption tower 13 through a flue IV 28;
When the tail gas enters the phenol absorption tower 13, a third spray assembly is started, at the moment, an acid-base resistant pump II 34 conveys acid liquor in an acid liquor storage tank 33 to a spray pipe III 31 through a liquid conveying pipe II 35, atomized small water drops are formed through a plurality of spray heads III 32, the tail gas spreads upwards through a plurality of air outlets on the lower surface of a flow distribution plate II 30 and contacts with the acid liquor, benzene pollutants in the tail gas react with dilute nitric acid liquor in the contact process to generate nitrophenol solution, in addition, a part of nitric acid and sodium hydroxide are neutralized to form sodium nitrate, and then the treated tail gas is discharged through an air outlet 38 at the top of the phenol absorption tower 13;
in the process, dilute nitric acid aqueous solution generated by the reaction of NO and water in the spray tower 11 can enter the acid liquid storage tank 33 through the infusion tube III 37 under the action of the acid and alkali resistant pump III 36 and is recycled for the second time;
Further, the mixed solution enters the acidification cavity in the recovery tank 14 along the feeding pipe 39 under the action of the peristaltic pump 40, and at this time, an acidic reagent is added into the acidification cavity in the recovery tank 14, for example: adjusting the pH value in an acidification cavity of the recovery pond 14 to precipitate nitrophenol, then performing acidification treatment, adding an alkaline reagent such as sodium hydroxide solution into the acidification cavity of the recovery pond 14, adjusting the pH value of waste liquid to be neutral, removing excessive acidic substances, performing a liquid-liquid extraction process on the nitrophenol in the waste liquid, adding diethyl ether into the waste liquid, and extracting the p-nitrophenol by the diethyl ether, wherein in the process, the nitrophenol is transferred from an aqueous phase to an organic phase so as to realize separation, then starting two electric push rods 44, moving the telescopic rods of the two electric push rods 44 upwards, driving a baffle plate 43 to move upwards, enabling the nitrophenol and diethyl ether positioned below to enter a finished product cavity of the recovery pond 14, and then discharging the nitrophenol solution through a discharge pipe 45;
in the acidification and deacidification process, in order to improve the mixing efficiency of acid alkali liquor and mixed solution, the acceleration can be carried out through the stirring assembly, and the specific process is as follows:
The motor 50 is started, the output shaft of the motor 50 rotates and drives the driving shaft 51 to rotate, at the moment, the two driving wheels 52 rotate and drive the corresponding driven wheels 54 to rotate through the belt 55, at the moment, the two driven shafts 53 synchronously rotate under the action of the respective driven wheels 54, and the main stirring rod 56 and the two auxiliary stirring rods 58 which are positioned below also respectively rotate along with the driving shaft 51 and the driven shafts 53, so that the mixed solution is stirred, and the pH value adjusting speed in the acidification cavity of the recovery tank 14 is accelerated.
The embodiments of the present application have been described above with reference to the accompanying drawings, in which the embodiments of the present application and features of the embodiments may be combined with each other without conflict, the present application is not limited to the above-described embodiments, which are merely illustrative, not restrictive, of the present application, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are protected by the present application.
Claims (10)
1. The nitrogen oxide and benzene VOCs pollutant absorption phase change treatment system with useless control useless dock in enameled wire production system (1), its characterized in that still includes:
A tail gas stoving filter mechanism and nitric oxide oxidation subassembly for handling the tail gas that produces among the enameled wire production process, the right side of nitric oxide oxidation subassembly is connected with spray column (11) that are used for reacting nitrogen dioxide and water, the right side of spray column (11) is connected with nitrogen dioxide absorption tower (12), the right side of nitrogen dioxide absorption tower (12) is provided with phenol absorption tower (13) that are used for carrying out absorbing to benzene series VOCs, the right side of phenol absorption tower (13) is provided with recovery pond (14) that are used for retrieving phenol.
2. The system for absorbing and phase-changing nitrogen oxides and benzene series VOCs pollutants by using waste to treat waste according to claim 1, wherein a recycling component for detecting NO exceeding a set concentration in the spray tower to be led into the nitric oxide oxidation component again is arranged between the spray tower (11) and the nitric oxide oxidation component.
3. The phase change treatment system for absorbing nitrogen oxides and benzene series VOCs pollutants by waste treatment according to claim 1, wherein a flue I (4) is arranged between the tail gas drying and filtering mechanism and the nitric oxide oxidation component, a flue II (6) is arranged on the left side of the tail gas drying and filtering mechanism, the other end of the flue II (6) extends to the inner cavity of the enameled wire production system (1) and is fixedly provided with a gas collecting cover (7), the tail gas drying and filtering mechanism comprises an electric dust collector (2), a drying box (5) and an electric heating pipe (10), the drying box (5) is fixedly arranged at the left side air inlet end of the electric dust collector (2), the electric heating pipe (10) which is uniformly distributed is fixedly arranged in the drying box (5), one end of the flue II (6) is communicated with the drying box (5), the nitric oxide oxidation component comprises a catalytic oxidation box (3), the catalytic oxidation box (3) is in a rectangular structure, a plurality of slots (8) which are uniformly distributed are formed in the side wall of the catalytic oxidation box (3), a catalyst filling layer (9) is arranged in the slots (8), and the electric dust collector (2) is communicated with the catalytic oxidation box (4).
4. The system for absorbing and phase-changing treatment of nitrogen oxides and benzene series VOCs pollutants by using waste to treat waste according to claim 3, wherein the spray tower (11) is in a tower-shaped structure, a first spray assembly is arranged in the spray tower (11), and the first spray assembly comprises:
The limiting plate (60), limiting plate (60) fixed mounting is in the inner chamber of spray column (11), and the lateral wall of limiting plate (60) closely laminates with the inner wall of spray column (11), the lower surface of limiting plate (60) is provided with and is annular shunt tubes (61), the upper surface fixed mounting of shunt tubes (61) has a plurality of shower first (62) that are circumference equidistant distribution, and the top of shower first (62) runs through the lower surface of limiting plate (60) and extends to the top, the upper surface of limiting plate (60) just is located the week side of a plurality of shower first (62) and all is fixed with both ends open-ended inside hollow spiral pipe (63), install a plurality of shower first (64) that are evenly distributed on shower first (62), and the water outlet end of shower first (64) is located spiral pipe (63), the bottom of spiral pipe (63) runs through the upper surface of limiting plate (60) and extends to the inner chamber lower part of spray column (11), the top of shower first (62) runs through the lower surface of limiting plate (60) and extends to the top, the top of a plurality of oxygen-generating machine (15) and the oxidation case (3), the oxygen-generating machine (16) are provided with the air inlet (15) and oxygen-generating machine (16) are connected with the air inlet (15) respectively, and all fixed mounting has check valve (17) on two air inlet ends of T pipe (15), the gas outlet end of T pipe (15) is linked together with the inner chamber lower part of spray column (11), the week side of spray column (11) is provided with water tank (65), install water pump one (18) in water tank (65), raceway (19) are installed to the output of water pump one (18), and the other end of raceway (19) runs through the inner wall of transfer line two (35) and the outer wall of spray column (11) in proper order and extends to the inner chamber lower part of spray column (11), the one end of raceway (19) is linked together with the water inlet end of shunt tubes (61).
5. The system for absorbing phase change treatment of nitrogen oxides and benzene series VOCs pollutants by waste treatment according to claim 4, wherein a flue III (20) is arranged at the top end of the spray tower (11), the other end of the flue III (20) penetrates through the outer wall of the nitrogen dioxide absorption tower (12) and extends to the lower part of the inner cavity of the nitrogen dioxide absorption tower (12), a fan I (21) is arranged on the flue III (20), a splitter plate I (22) is fixed at one end of the flue III (20) positioned in the nitrogen dioxide absorption tower (12), the splitter plate I (22) is of an internal hollow structure, a plurality of air outlets which are uniformly distributed are formed in the lower surface of the splitter plate I (22), a second spray assembly is arranged in the nitrogen dioxide absorption tower (12), and the second spray assembly comprises:
The spray pipe II (23), spray pipe II (23) set up directly over the flow distribution plate I (22), spray pipe II (23) are annular structure, the lower surface mounting of spray pipe II (23) has a plurality of shower nozzles II (24) that are circumference equidistant distribution, the week side of nitrogen dioxide absorption tower (12) is provided with alkali lye holding vessel (25), install acid and alkali resistant pump I (26) in alkali lye holding vessel (25), transfer line I (27) are installed to the output of acid and alkali resistant pump I (26), and the other end of transfer line I (27) runs through the inner wall of alkali lye holding vessel (25) and the outer wall of nitrogen dioxide absorption tower (12) in proper order and extends to in the nitrogen dioxide absorption tower (12) and be linked together with spray pipe II (23).
6. The system for absorbing phase change treatment of nitrogen oxides and benzene series VOCs pollutants by waste treatment according to claim 5, wherein a flue four (28) is arranged at the top end of the nitrogen dioxide absorption tower (12), the other end of the flue four (28) penetrates through the outer wall of the phenol absorption tower (13) and extends to the lower part of an inner cavity of the phenol absorption tower (13), a fan two (29) is arranged on the flue four (28), one end of the flue four (28) positioned in the phenol absorption tower (13) is fixedly provided with a splitter plate two (30), the splitter plate two (30) is of an internal hollow structure, a plurality of air outlets which are uniformly distributed are formed in the lower surface of the splitter plate two (30), a third spraying assembly is arranged in the phenol absorption tower (13), and the third spraying assembly comprises:
The spray pipe III (31), spray pipe III (31) set up directly over the flow distribution board II (30), spray pipe III (31) are the annular structure, the lower surface mounting of spray pipe III (31) has a plurality of shower nozzles III (32) that are circumference equidistant distribution, the week side of phenol absorption tower (13) is provided with acidizing fluid holding vessel (33), install acid and alkali resistant pump II (34) in acidizing fluid holding vessel (33), transfer line II (35) are installed to the output of acid and alkali resistant pump II (34), and the other end of acid and alkali resistant pump II (34) runs through the inner wall of acidizing fluid holding vessel (33) and the outer wall of phenol absorption tower (13) in proper order and extends to in phenol absorption tower (13) and be linked together with spray pipe III (31), gas vent (38) are installed at the top of phenol absorption tower (13).
7. The system for absorbing and phase-changing nitrogen oxides and benzene series VOCs pollutants by using waste to treat waste according to claim 6, wherein an acid-base resistant pump III (36) is arranged between the spray tower (11) and the acid liquid storage tank (33), the input end and the output end of the acid-base resistant pump III (36) are both fixed with a perfusion tube III (37), and the other ends of the two perfusion tubes III (37) are respectively communicated with the spray tower (11) and the acid liquid storage tank (33).
8. The system for absorbing and phase-changing nitrogen oxides and benzene series VOCs pollutants by using waste to treat waste according to claim 5, wherein the recycling component further comprises a return pipe which is in an inverted L shape and is arranged at the top end of the spray tower (11) and positioned at the periphery of the flue III (20), the return pipe is communicated with the flue III (20) and forms a T-shaped structure with the flue III (20), NO concentration sensors are arranged at the air inlet end of a T-shaped pipe formed by the flue III (20) and the return pipe, one-way valves are symmetrically arranged at the two air outlet ends of the T-shaped pipe formed by the flue III (20) and the return pipe, the other end of the return pipe is communicated with the flue I (4), and an air extractor is arranged at the position, close to the flue I (4), on the return pipe.
9. The waste nitrogen oxide and benzene series VOCs pollutant absorption phase change treatment system with waste treatment according to claim 1, wherein a feeding pipe (39) is arranged between the phenol absorption tower (13) and the recovery tank (14), two ends of the feeding pipe (39) are respectively communicated with the lower part of the inner cavity of the phenol absorption tower (13) and the inner cavity of the recovery tank (14), a peristaltic pump (40) is arranged on the feeding pipe (39), the recovery tank (14) is of a hollow structure with an opening at the top, a partition plate (41) is fixed in the recovery tank (14), the partition plate (41) divides the inner cavity of the recovery tank (14) into an acidification cavity and a finished product cavity, a chute (42) is arranged on the lower surface of the partition plate (41), a baffle (43) is slidably arranged in the chute (42), an electric push rod (44) is fixedly arranged right above the baffle (43), the telescopic rod end of the electric push rod (44) is fixedly arranged on the upper surface of the baffle (43), a sealing cushion (45) is arranged on the lower surface of the baffle (43), and the discharge pipe (45) is fixedly arranged on one side of the discharge pipe (14).
10. The system for treating waste nitrogen oxides and benzene series VOCs pollutant absorbing phase change treatment according to claim 9, wherein a stirring component is disposed in the acidification cavity of the recovery tank (14), and the stirring component comprises:
The transverse plate (47), transverse plate (47) fixed mounting is in acidizing chamber upper portion of recovery pond (14), the upper surface center department of transverse plate (47) is fixed with support one (48), the upper surface of transverse plate (47) and be located the both sides symmetry of support one (48) and be fixed with support two (49), the upper surface fixed of support one (48) has motor (50), motor (50) rotation is installed driving shaft (51) are installed, the output shaft of motor (50) runs through the upper surface of support one (48) and extends to support one (48) in and driving shaft (51) coaxial coupling, fixed mounting has two perpendicular action wheel (52) that distribute on driving shaft (51), support two (49) rotation is installed driven shaft (53), fixed mounting has driven wheel (54) on (53), is provided with between action wheel (52) and driven wheel (54), is connected through belt (55) transmission between two action wheels (52) and the driven wheel (54) that correspond respectively with both sides, the lower surface of motor (50) runs through the upper surface of support one (48) and extends to in and driving shaft (51) coaxial coupling, driving shaft (56) are installed on driving shaft (56) and stirring rod (56), auxiliary stirring rods (58) are symmetrically arranged on the lower surface of the transverse plate (47) and positioned on two sides of the main stirring rod (56), the top ends of the two auxiliary stirring rods (58) are respectively and coaxially connected with a corresponding driven shaft (53), and a plurality of stirring blades (59) are arranged on the auxiliary stirring rods (58);
The outer surfaces of the main stirring rod (56), the helical blades (57), the auxiliary stirring rod (58) and the stirring blades (59) are all coated with a compact anti-corrosion layer.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502746A (en) * | 2009-04-09 | 2009-08-12 | 江苏扬农化工集团有限公司 | Method for processing nitrous oxides in chlorinated exhaust of nitroaromatic compounds |
| CN204973588U (en) * | 2015-09-25 | 2016-01-20 | 山东培华环保科技有限公司 | Electrostatic precipitator catalytic oxidation efficient handling of waste gas equipment |
| CN205832945U (en) * | 2016-07-08 | 2016-12-28 | 佛山西陇化工有限公司 | A kind of nitrous oxides exhaust gas that reclaims prepares the device of dust technology |
| CN106390706A (en) * | 2016-11-14 | 2017-02-15 | 大连碧蓝节能环保科技有限公司 | Rain curtain type desulfuration spraying tower |
| CN207137690U (en) * | 2017-07-18 | 2018-03-27 | 佛山市兰海环保设备科技有限公司 | A kind of industrial waste gas catalytic treatment equipment |
| CN213101505U (en) * | 2020-07-09 | 2021-05-04 | 王霁耀 | Ethylene oxide collection device for chemical safety production |
| CN113648812A (en) * | 2021-08-17 | 2021-11-16 | 西安交通大学 | Photoelectric synergistic catalytic oxidation and wet absorption mercury nitrate integrated removal system and method |
| CN215311772U (en) * | 2021-07-29 | 2021-12-28 | 兰州金盛隆石油化工有限公司 | Flocculating agent automatic material conveying stirring dissolves device |
| CN218307189U (en) * | 2022-08-10 | 2023-01-17 | 北京顺政排水有限公司 | A wet deacidification tower with a spiral channel inside |
-
2024
- 2024-07-30 CN CN202411033710.4A patent/CN118904051A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502746A (en) * | 2009-04-09 | 2009-08-12 | 江苏扬农化工集团有限公司 | Method for processing nitrous oxides in chlorinated exhaust of nitroaromatic compounds |
| CN204973588U (en) * | 2015-09-25 | 2016-01-20 | 山东培华环保科技有限公司 | Electrostatic precipitator catalytic oxidation efficient handling of waste gas equipment |
| CN205832945U (en) * | 2016-07-08 | 2016-12-28 | 佛山西陇化工有限公司 | A kind of nitrous oxides exhaust gas that reclaims prepares the device of dust technology |
| CN106390706A (en) * | 2016-11-14 | 2017-02-15 | 大连碧蓝节能环保科技有限公司 | Rain curtain type desulfuration spraying tower |
| CN207137690U (en) * | 2017-07-18 | 2018-03-27 | 佛山市兰海环保设备科技有限公司 | A kind of industrial waste gas catalytic treatment equipment |
| CN213101505U (en) * | 2020-07-09 | 2021-05-04 | 王霁耀 | Ethylene oxide collection device for chemical safety production |
| CN215311772U (en) * | 2021-07-29 | 2021-12-28 | 兰州金盛隆石油化工有限公司 | Flocculating agent automatic material conveying stirring dissolves device |
| CN113648812A (en) * | 2021-08-17 | 2021-11-16 | 西安交通大学 | Photoelectric synergistic catalytic oxidation and wet absorption mercury nitrate integrated removal system and method |
| CN218307189U (en) * | 2022-08-10 | 2023-01-17 | 北京顺政排水有限公司 | A wet deacidification tower with a spiral channel inside |
Non-Patent Citations (1)
| Title |
|---|
| 生态环境部: "《土壤环境监测分析方法》", 28 February 2019, 中国环境出版集团, pages: 404 - 405 * |
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