CN217220883U

CN217220883U - Special denitration reactor for industrial waste gas

Info

Publication number: CN217220883U
Application number: CN202220286668.7U
Authority: CN
Inventors: 铁良; 韩奇颖; 王呈伟
Original assignee: Shandong Lvligan Environmental Protection Technology Co ltd
Current assignee: Shandong Lvligan Environmental Protection Technology Co ltd
Priority date: 2022-02-12
Filing date: 2022-02-12
Publication date: 2022-08-19
Anticipated expiration: 2032-02-12

Abstract

The utility model discloses a special denitration reactor of industrial waste gas, including box, intake pipe, tensioning sprocket, motor I, sealing door, slide, feed liquor pipe, drain pipe, (mixing) shaft, cut apart the board, circulation channel, slope baffle, fixed dog, limiting plate, horizontal baffle, adjusting screw, fixed plate, air pump, stirring vane, box one side intercommunication feed liquor pipe, feed liquor pipe below box intercommunication drain pipe, the bottom half is equipped with the intake pipe, the intake pipe top is equipped with cuts apart the board, cut apart and be equipped with a plurality of through-holes on the board, cut apart the board top and be equipped with three (mixing) shafts of group. The utility model discloses a cut apart the board in air inlet department setting, cut apart into the microbubble with big bubble, after special stirring vane, further break up the bubble, increase the area of contact of gas and deNOx liquid, improve the denitration effect to at the inside different baffles that set up of box, (mixing) shaft and circulation channel mutually support, accomplish the regulation of deNOx liquid, make concentration unanimous everywhere.

Description

Special denitration reactor for industrial waste gas

Technical Field

The utility model belongs to the technical field of the waste gas denitration, in particular to special denitration reactor of industrial waste gas.

Background

Since the seventies, the problem of air pollution caused by nitrogen oxides has been emphasized by people, and it has been found that nitrogen oxides cause photochemical reaction under the action of sunlight, so that high-content nitric acid rain, photochemical smog, ozone reduction and other problems are related to low-concentration nitrogen oxides, and the hazard of nitrogen oxides is much greater than that originally conceived by people.

The wet denitration method has the advantages of no occupation of a large amount of sites, small occupied area, low denitration cost, simple facilities and the like, and is widely applied, and denitration treatment is carried out by introducing the waste gas containing the nitrate into the denitration liquid formed by one or more alkaline solutions such as NaOH, KOH, Na2CO3, NH 3. H2O and the like as an absorbent after being oxidized by an oxidizer.

However, the conventional exhaust gas denitration device has the following problems in the use process: 1) the oxidized waste gas containing the nitrate is introduced into the denitration liquid to react, but usually, a single stirring device is arranged in the reaction container, so that the denitration efficiency is improved, the single stirring device cannot balance the concentration of the denitration liquid in the reaction container, so that the denitration liquid reacts with the waste gas containing the nitrate more at the stirring position and the air inlet position due to the flowability and uncertainty of the liquid, and the concentration of the denitration liquid in the container is uneven at the edge due to the fact that the stirring rod cannot stir at the inner corner of the container; 2) present denitration equipment promotes stirring efficiency through carrying out certain reciprocating motion with agitating unit in that the container is inside, but this kind of method is because can't make liquid solution carry out mixing on a large scale, and the denitration effect is not good to equipment is complicated, is unfavorable for overhauing.

Disclosure of Invention

The utility model aims at overcoming not enough among the prior art, provide a special denitration reactor of industrial waste gas, through cutting apart the board in air inlet department setting up, split into the bobble with big bubble, after special stirring vane, further break up the bubble, increase the area of contact of gas and denitration liquid, improve the denitration effect to set up different baffles inside the box, (mixing) shaft and circulation channel mutually support, accomplish the regulation of denitration liquid, make concentration unanimous everywhere.

In order to realize the purpose, the utility model discloses a technical scheme be:

a special denitration reactor for industrial waste gas comprises a box body, an air inlet pipe, a tensioning chain wheel, a motor I, a sealing door, a slide way, a liquid inlet pipe, a liquid outlet pipe, a stirring shaft, a partition plate, a circulating channel, an inclined baffle plate, a fixed stop block, a limiting plate, a horizontal baffle plate, an adjusting screw, a fixed plate, an air pump and stirring blades, wherein the liquid inlet pipe is communicated with the box body on one side of the box body, the liquid outlet pipe is communicated with the box body below the liquid inlet pipe, the air inlet pipe is arranged at the bottom of the box body, the partition plate is arranged above the air inlet pipe and is provided with a plurality of through holes, three groups of stirring shafts are arranged above the partition plate, the chain wheel arranged on one side of the stirring shaft is meshed with the chain wheel arranged on the output shaft of the motor I and the tensioning chain wheel through a chain, the motor I is fixedly arranged on one side of the box body, the stirring shaft is provided with a plurality of stirring blades, the horizontal baffle plate is arranged above the stirring shaft, the inclined baffle plate is arranged on two sides of the stirring shaft, and a plurality of fixed stop blocks are arranged between the inclined baffle plate and the box body, be equipped with the limiting plate on the fixed dog, movable mounting has the circulation passage between the limiting plate, and the box top corresponds the circulation passage position and is equipped with the opening, and the opening outside is equipped with sealing door, and sealing door movable mounting is inside the slide, and slide fixed mounting is on the box, the fixed intercommunication detection room in box top.

The tensioning chain wheel is movably mounted at one end of the adjusting screw rod, the other end of the adjusting screw rod is movably mounted on the fixing plate, nuts are movably mounted on the adjusting screw rods on two sides of the fixing plate, and the fixing plate is fixedly mounted on one side of the box body.

The nitrogen oxide detector is arranged in the detection chamber, the type of the nitrogen oxide detector is GF-201-H2S, the nitrogen oxide detector is manufactured through private customization or purchase, a three-way connector with an electromagnetic valve is fixedly communicated with the upper portion of the detection chamber, an air outlet pipe is connected with the upper portion of the three-way connector with the electromagnetic valve, one side of the three-way connector is communicated with an air return pipe, an air pump is arranged on the air return pipe, and the other end of the air return pipe is communicated with one side of the box body.

The circulating channel comprises a spiral blade, a protective cover, a rack, a driving lever, a gear I and a gear II, the spiral blade is movably mounted inside the circulating channel, a bevel gear arranged at the bottom of the spiral blade is meshed with a bevel gear arranged at the output end of a motor II, the motor II is fixedly mounted on one side of the box body, the rack is fixedly mounted on one side of the circulating channel and is meshed with the gear II, the gear II is movably mounted on the side wall of the box body and is meshed with the gear I, the gear I is movably mounted on the protective cover, the protective cover is fixedly mounted on the box body, and the driving lever is arranged on one side of the gear I.

Preferably, the stirring blade is of a sawtooth structure, and can further divide bubbles, so that the contact area between the bubbles and the denitration liquid is increased, and the denitration effect is enhanced.

Compared with the prior art, the utility model beneficial effect shows:

1) the dividing plate is additionally arranged above the gas inlet pipe, so that large bubbles formed during gas inlet can be divided into a plurality of small bubbles, and then the stirring shaft drives the stirring blades to rotate to continuously break up the small bubbles, so that the contact area of the gas and the denitration liquid is increased, and the periphery of the stirring shaft is additionally provided with the inclined baffle and the horizontal baffle, so that the contact time of the gas and the denitration liquid is further increased, and the denitration efficiency is improved;

2) by additionally arranging the tension chain wheel, the chain can be conveniently replaced and maintained, and the rotating directions of the two stirring shafts below the box body are opposite, so that the stirring effect is enhanced;

3) through add the circulation channel in box both sides, circulation channel inside is equipped with helical blade, through helical blade's rotation, can drive the box below with box top solution, can realize the holistic removal of liquid by gaseous drive denitration liquid upward movement afterwards, avoids the uneven problem of concentration that local stirring brought to simple structure sets up in the box top and can open the sealing door, is convenient for to circulation channel's maintenance and change.

Drawings

FIG. 1 is a schematic structural view of a special denitration reactor for industrial waste gas of the utility model;

FIG. 2 is a schematic side view of the special denitration reactor for industrial waste gas of the present invention;

FIG. 3 is a schematic view of the internal structure of the case;

FIG. 4 is a schematic view of a horizontal baffle arrangement;

FIG. 5 is a schematic view showing the internal structure of the circulation path;

FIG. 6 is a schematic view of the inside of the detection chamber;

FIG. 7 is an enlarged fragmentary view taken at A in FIG. 4;

FIG. 8 is an enlarged fragmentary view at B of FIG. 4;

in the figure: 10. a box body; 11. an air inlet pipe; 12. a tension sprocket; 13. a motor I; 14. a sealing door; 15. a slideway; 16. a detection chamber; 17. an air return pipe; 18. an air outlet pipe; 19. an electromagnetic valve; 20. a nitrogen oxide detector; 21. a liquid inlet pipe; 22. a liquid outlet pipe; 23. a motor II; 24. a stirring shaft; 25. dividing the plate; 26. a circulation channel; 101. an inclined baffle plate; 102. fixing a stop block; 103. a limiting plate; 104. a horizontal baffle; 121. adjusting the screw rod; 122. a fixing plate; 171. an air pump; 241. a stirring blade; 261. a helical blade; 262. a protective cover; 263. a rack; 264. a deflector rod; 265. a gear I; 266. and a gear II.

Detailed Description

For the convenience of understanding of those skilled in the art, the technical solution of the present invention will be further specifically described with reference to fig. 1 to 8.

A special denitration reactor for industrial waste gas comprises a box body 10, an air inlet pipe 11, a tensioning chain wheel 12, a motor I13, a sealing door 14, a slide way 15, a detection chamber 16, a liquid inlet pipe 21, a liquid outlet pipe 22, a stirring shaft 24, a partition plate 25, a circulating channel 26, an inclined baffle 101, a fixed stop block 102, a limiting plate 103, a horizontal baffle 104, an adjusting screw 121, a fixing plate 122, an air pump 171 and stirring blades 241, wherein the liquid inlet pipe 21 is communicated with one side of the box body 10, the box body below the liquid inlet pipe 21 is communicated with the liquid outlet pipe 22, the air inlet pipe 11 is arranged at the bottom of the box body 10, the partition plate 25 is arranged above the air inlet pipe 11, a plurality of through holes are formed in the partition plate 25, three groups of stirring shafts 24 are arranged above the partition plate 25, a chain wheel arranged at one side of the stirring shafts 24 is meshed with a chain wheel arranged at an output shaft of the motor I13 and the tensioning chain wheel 12 through a chain, the motor I13 is fixedly arranged at one side of the box body 10, the stirring shafts 24 are provided with a plurality of stirring blades 241, the stirring shaft 24 top is equipped with horizontal baffle 104, the (mixing) shaft 24 both sides are equipped with slope baffle 101, be equipped with a plurality of fixed dog 102 between slope baffle 101 and the box 10, be equipped with limiting plate 103 on the fixed dog 102, movable mounting has circulation channel 26 between the limiting plate 103, the box 10 top corresponds circulation channel 26 position and is equipped with the opening, the opening outside is equipped with sealing door 14, sealing door 14 movable mounting is inside slide 15, slide 15 fixed mounting is on the box 10, the fixed intercommunication detection room 16 in box 10 top.

The tensioning chain wheel 12 is movably mounted at one end of the adjusting screw 121, the other end of the adjusting screw 121 is movably mounted on the fixing plate 122, nuts are movably mounted on the adjusting screw 121 at two sides of the fixing plate 122, and the fixing plate 122 is fixedly mounted at one side of the box body 10.

A nitrogen oxide detector 20 is arranged in the detection chamber 16, the type of the nitrogen oxide detector is GF-201-H2S, the nitrogen oxide detector is obtained through private customization or purchase, a three-way joint controlled by an electromagnetic valve 19 is fixedly communicated above the detection chamber 16, an air outlet pipe 18 is connected above the three-way joint controlled by the electromagnetic valve, one side of the three-way joint is communicated with an air return pipe 17, an air pump 171 is arranged on the air return pipe 17, and the other end of the air return pipe 17 is communicated with one side of the box body 10; nitrogen oxide detector 20 detects nitrogen oxide and whether exceeds standard, if exceed standard then seal outlet duct 18 and get into the muffler 17 in by air pump 171 with waste gas pump again go into box 10 below and carry out denitration treatment through the three way connection of 19 controls of solenoid valve, if reach emission standard then get into outlet duct 18 and seal muffler 17 and discharge, the signal transmission of nitrogen oxide detector and the control of solenoid valve are electric connection among the prior art, the utility model relates to a circuit components and parts such as nitrogen oxide detector, solenoid valve are the components and parts among the prior art, and electric connection between the circuit components and parts is conventional circuit connection among the prior art, not the utility model discloses a protection scope.

The circulating channel 26 comprises a spiral blade 261, a protective cover 262, a rack 263, a shifting rod 264, a gear I265 and a gear II 266, the spiral blade 261 is movably installed inside the circulating channel 26, a bevel gear arranged at the bottom of the spiral blade 261 is meshed with a bevel gear arranged at the output end of a motor II 23, the motor II 23 is fixedly installed on one side of the box body 10, the rack 263 is fixedly installed on one side of the circulating channel 26, the rack 263 is meshed with the gear II 266, the gear II 266 is movably installed on the side wall of the box body 10, the gear II 266 is meshed with the gear I265, the gear I265 is movably installed on the protective cover 262, the protective cover 262 is fixedly installed on the box body 10, and the shifting rod 264 is arranged on one side of the gear I265.

The stirring blades 241 have a zigzag structure, and can further divide the bubbles, thereby increasing the contact area between the bubbles and the denitration liquid and enhancing the denitration effect.

A special denitration reactor for industrial waste gas comprises the following working processes: the denitration solution is poured into the box body 10 through the liquid inlet pipe 21, the position of the solution can be observed by opening the sealing door 14 above the box body 10, and the liquid inlet pipe 21 is closed when the solution overflows the horizontal baffle 104;

washing flue gas sent by a blower in a washing tower by water, cooling to 55-60 ℃, mixing with air containing oxidant from an oxidation generator to oxidize nitrogen oxides in the exhaust gas, introducing the oxidized nitrogen oxides into the box body 10 through an air inlet pipe 11, starting a motor I13 and a motor II 23, driving a stirring shaft 24 to rotate by meshing a chain wheel and a chain by the motor I13, enabling the nitrate-containing waste gas to pass through a partition plate 25, then rotationally stirring through the stirring shaft 24, fully reacting with a denitration solution, enabling the denitrated waste gas to reach a detection chamber 16 above the box body 10, detecting whether the nitrogen oxides exceed the standard by a GF-201-H2S nitrogen oxide detector 20, enabling the denitrated waste gas to enter an air return pipe 17 through a three-way joint closed air outlet pipe 18 controlled by an electromagnetic valve 19 if the waste gas exceeds the standard, pumping the waste gas into the lower part of the box body 10 again by an air pump 171 for carrying out denitration treatment, enabling the denitrated gas to enter the air return pipe 18 closed air return pipe 17 through the three-way joint controlled by the electromagnetic valve 19 to be discharged out if the waste gas reaches the standard, solution can be in the middle of in the box 10 upwards remove under gaseous drive, both sides solution can drive helical blade 261 rotation at motor II 23 in the box 10 thereby make solution move down under helical blade 261's drive, accomplish denitration solution's whole circulation operation, with the inside each department solution of this balanced box 10, if need overhaul helical blade 261 when changing, then the accessible rotates driving lever 264, make I265 of gear and II 266 of gear drive rack 263 along limiting plate 103 drive circulation channel 26 rebound, through I265 of two sets of intermeshing's gear and II 266 of gear about setting up, the completion is to circulation channel 26's removal, open sealing door 14 and take out and maintain or change.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. A special denitration reactor for industrial waste gas comprises a box body, an air inlet pipe, a tensioning chain wheel, a motor I, a sealing door, a slide way, a liquid inlet pipe, a liquid outlet pipe, a stirring shaft, a partition plate, a circulating channel, an inclined baffle, a fixed stop block, a limiting plate, a horizontal baffle, an adjusting screw, a fixed plate, an air pump and stirring blades, and is characterized in that one side of the box body is communicated with the liquid inlet pipe, the box body below the liquid inlet pipe is communicated with the liquid outlet pipe, the bottom of the box body is provided with the air inlet pipe, the partition plate is arranged above the air inlet pipe, a plurality of through holes are arranged on the partition plate, three groups of stirring shafts are arranged above the partition plate, a chain wheel arranged on one side of the stirring shaft is meshed with a chain wheel arranged on an output shaft of the motor I and the tensioning chain wheel, the motor I is fixedly arranged on one side of the box body, the stirring shaft is provided with a plurality of stirring blades, the horizontal baffle is arranged above the stirring shaft, the inclined baffle is arranged on two sides of the stirring shaft, be equipped with a plurality of fixed dogs between slope baffle and the box, be equipped with the limiting plate on the fixed dog, movable mounting has the circulation passage between the limiting plate, and the box top corresponds the circulation passage position and is equipped with the opening, and the opening outside is equipped with the sealing door, and sealing door movable mounting is inside the slide, and slide fixed mounting is on the box, the fixed intercommunication detection room in box top.

2. The special denitration reactor for industrial waste gas according to claim 1, wherein the tension sprocket is movably mounted at one end of the adjusting screw, the other end of the adjusting screw is movably mounted on the fixing plate, nuts are movably mounted on the adjusting screws at two sides of the fixing plate, and the fixing plate is fixedly mounted at one side of the box body.

3. The special denitration reactor for industrial waste gas according to claim 1, characterized in that a nitrogen oxide detector is arranged in the detection chamber, a three-way joint with an electromagnetic valve control is fixedly communicated with the upper part of the detection chamber, an air outlet pipe is connected with the upper part of the three-way joint with the electromagnetic valve control, one side of the three-way joint is communicated with an air return pipe, an air pump is arranged on the air return pipe, and the other end of the air return pipe is communicated with one side of the box body.

4. The special denitration reactor for industrial waste gas as claimed in claim 1, wherein the circulation channel comprises a helical blade, a protective cover, a rack, a shifting rod, a gear I and a gear II, the helical blade is movably mounted inside the circulation channel, the bevel gear arranged at the bottom of the helical blade is meshed with the bevel gear arranged at the output end of the motor II, the motor II is fixedly mounted at one side of the box body, the rack is fixedly mounted at one side of the circulation channel, the rack is meshed with the gear II, the gear II is movably mounted on the side wall of the box body, the gear II is meshed with the gear I, the gear I is movably mounted on the protective cover, the protective cover is fixedly mounted on the box body, and the shifting rod is arranged at one side of the gear I.

5. The special denitration reactor for industrial waste gas as claimed in claim 1, wherein the stirring blade is of a saw-tooth structure.