CN113856439B - Industrial flue gas desulfurization and denitrification dust remover - Google Patents
Industrial flue gas desulfurization and denitrification dust remover Download PDFInfo
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- CN113856439B CN113856439B CN202111131733.5A CN202111131733A CN113856439B CN 113856439 B CN113856439 B CN 113856439B CN 202111131733 A CN202111131733 A CN 202111131733A CN 113856439 B CN113856439 B CN 113856439B
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- magnet
- box
- desulfurization
- flue gas
- air bag
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 78
- 230000023556 desulfurization Effects 0.000 title claims abstract description 78
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000003546 flue gas Substances 0.000 title claims abstract description 67
- 239000000428 dust Substances 0.000 title claims abstract description 23
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000012670 alkaline solution Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002253 acid Substances 0.000 claims abstract description 33
- 239000000779 smoke Substances 0.000 claims abstract description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims 1
- 230000036541 health Effects 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 16
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/485—Sulfur compounds containing only one sulfur compound other than sulfur oxides or hydrogen sulfide
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/102—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention relates to the field of industrial flue gas dust removal, in particular to an industrial flue gas desulfurization and denitrification dust remover which comprises a denitrification box, a desulfurization box and a desulfurization acid box, wherein a flue gas inlet pipe and an ammonia gas discharge pipe are arranged at the upper end of the denitrification box, the denitrification box is communicated with the desulfurization box through an air pump, and a water inlet pipe and an oxygen gas discharge pipe are arranged at the upper end of the desulfurization box; the device comprises a desulphurizing acid box, a motor, a smoke outlet pipe, a connecting rod, a bar magnet, a spring, a magnet disc, a baffle plate and a baffle plate, wherein alkaline solution is arranged in the desulphurizing acid box; the invention can solve the problems that the existing industrial flue gas dust remover does not consider that the discharged flue gas can also carry tiny sulfuric acid droplets, which can cause the pollution of outside air and harm the physical health of personnel.
Description
Technical Field
The invention relates to the field of industrial flue gas dust removal, in particular to an industrial flue gas desulfurization and denitrification dust remover.
Background
The industrial flue gas is waste flue gas generated in industrial production, and the industrial flue gas contains a large amount of harmful substances such as sulfur dioxide and the like, so that the environment is easy to pollute, when the industrial flue gas is discharged, desulfurization and denitrification treatment is needed, the content of the harmful substances in the flue gas is reduced, and dust in the flue gas is needed to be treated, so that the environment protection is important, therefore, when the industrial flue gas is discharged, a desulfurization and denitrification dust remover is needed, and after the flue gas is filtered, and the emission standard is reached, the waste gas can be discharged into the atmosphere;
in the prior art, a China patent with the application number of 2020107735555 discloses an industrial flue gas desulfurization and denitrification deduster, which comprises a bedplate, wherein a desulfurization barrel is fixedly arranged at the top end of the bedplate, a built-in bracket is fixedly arranged in the desulfurization barrel, a built-in filter cylinder is clamped and arranged at the top end of the built-in bracket, an oxygen exhaust pipe is fixedly arranged at the top end of the desulfurization barrel, a water inlet pipe is inserted and arranged on the desulfurization barrel, a denitrification box is fixedly arranged at the top end of the bedplate, a filter screen cover is arranged on the lower surface of a top cover of the denitrification box in a threaded manner, a filter plate is clamped and arranged in the denitrification box, an air pump is fixedly arranged at the top end of the bedplate, a discharge pipeline is fixedly suspended at the bottom end of the bedplate, a first dust filtering mechanism and a second dust filtering mechanism are movably arranged on the discharge pipeline, a cylinder is fixedly arranged at the bottom end of the bedplate, and the first dust filtering mechanism and the second dust filtering mechanism are connected through the filter screen cover and an active carbon plate, and can treat dust in a mode of combination of interception and adsorption;
however, in the desulfurization process, firstly, sulfur dioxide is oxidized to form sulfur trioxide, then the sulfur trioxide reacts with water to form sulfuric acid, then flue gas and the sulfuric acid are introduced into a discharge pipeline together, the sulfuric acid forming liquid is filtered and collected, and the flue gas is discharged out of a dust remover; however, the method only collects the sulfuric acid forming the liquid, and does not consider that when the flue gas is continuously discharged, the sulfuric acid solution is supersaturated to form fuming sulfuric acid, the fuming sulfuric acid is volatile, the flue gas can take away the volatilized sulfuric acid liquid drops with lighter mass, the step of removing a small amount of sulfuric acid liquid drops carried by the flue gas is not carried out in the patent, and the flue gas and the sulfuric acid liquid drops are discharged out of the dust remover together, so that the external air pollution is caused and the physical health of personnel is endangered.
Disclosure of Invention
In order to overcome the defects of the prior art, the problems that when the existing industrial flue gas dust remover is used for desulfurizing, the problem that when the continuously discharged flue gas is volatile, the flue gas takes away the volatilized sulfuric acid liquid drops with lighter mass, a small amount of sulfuric acid liquid drops carried by the flue gas are removed, the flue gas and the sulfuric acid liquid drops are discharged out of the dust remover together, the outside air pollution is caused and the physical health of personnel is endangered are solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to an industrial flue gas desulfurization and denitrification dust remover, which is characterized in that: the flue gas desulfurization device comprises a denitration box, a desulfurization box and a desulfurization box, wherein the upper end of the denitration box is fixedly communicated with a flue gas inlet pipe and an ammonia gas discharge pipe, a filter plate is fixedly installed in the denitration box, a reducing agent is filled in the filter plate, the denitration box is fixedly communicated with the desulfurization box through an air pump, the air inlet end of the air pump is communicated with the lower right end of the denitration box, the air inlet end of the air pump is positioned below the filter plate, and the air outlet end of the air pump is communicated with the upper end of the desulfurization box;
the upper end of the desulfurization box is fixedly communicated with a water inlet pipe and an oxygen exhaust pipe, one end of the water inlet pipe penetrating through the desulfurization box is fixedly provided with a first spray head, an active carbon plate is fixedly arranged in the desulfurization box, the desulfurization box and the desulfurization acid box are fixedly communicated through a communicating pipe, the air inlet end of the communicating pipe is communicated with the lower end of the right side of the desulfurization box, the air inlet end of the communicating pipe is positioned below the active carbon plate, and the air outlet end of the communicating pipe is communicated with the upper end of the desulfurization acid box;
the alkaline solution is filled in the desulphurized acid box, one end of the communicating pipe penetrates through the desulphurized acid box and is inserted into the bottom of the alkaline solution, a bushing is fixedly arranged at the bottom end of the communicating pipe, a motor is fixedly arranged in the middle of the upper end surface of the desulphurized acid box, an output shaft of the motor penetrates into the desulphurized acid box, a vertical connecting rod is fixedly arranged on the output shaft, a horizontal bar magnet is fixedly arranged at the lower end of the connecting rod, the bar magnet is fixedly connected with each other by two magnets, the magnetic poles of the two magnets in the same direction are opposite, a smoke outlet pipe is fixedly communicated with the upper end surface of the desulphurized acid box, a spring is fixedly arranged at the bottom of the desulphurized acid box, a magnet disc is fixedly arranged at one end of the spring, which is far away from the bottom of the desulphurized acid box, the magnet disc is fixedly connected with each other by two semicircular discs, the magnetic poles of the two semicircular discs in the same direction are opposite, and the magnet disc is in sealing sliding connection with the inner wall of the desulphurized acid box; in the initial state, the left magnet of the bar magnet is magnetically repelled with the left half disk of the magnet disk, and the right magnet of the bar magnet is magnetically repelled with the right half disk of the magnet disk; the magnet disc is uniformly provided with a plurality of ventilation holes, a baffle plate is fixedly arranged in the ventilation holes, and the baffle plate is bilaterally symmetrical and vertically distributed along the central axis of the ventilation holes.
Preferably, the first air bag is fixedly installed on the bottom surface inside the desulfurated acid box, the first air bag is located below the magnet disc, the upper surface of the first air bag is fixedly connected with the magnet disc, the first air bag is fixedly communicated with a water injection pipe, the other end of the water injection pipe is located on the top surface inside the desulfurated acid box, a second spray head is fixedly installed at one end, far away from the first air bag, of the water injection pipe, and a first spray nozzle is fixedly installed on the first air bag.
Preferably, the bar magnet is towards the central point of the one side of magnet dish to put fixed mounting and is warp the pole, it is whole diamond structure to warp the pole, warp the pole and constitute by 4 branches head and tail mutual activity articulates that the size is the same, evenly offered a plurality of through-holes on the warp the pole, the up end central point fixed mounting of magnet dish has the bearing, the lower extreme rotation of warp the pole is installed on the bearing, warp the pole, the axis of rotation of bar magnet coincide each other.
Preferably, a second air bag is fixedly arranged on the inner side of the diamond surrounded by the deformation rod, the second air bag is positioned below the liquid level in the sulfuric acid removal box, and a second nozzle is fixedly arranged on the second air bag.
Preferably, a conical interception net is fixedly arranged on the inner wall of one end of the smoke outlet pipe conduction and sulfuric acid removal box, an interception net opening faces the bottom surface of the sulfuric acid removal box, a felt is fixedly arranged on the inner wall of the interception net opening, and the outer diameter of the interception net opening is equal to the inner diameter of the smoke outlet pipe.
Preferably, a plurality of axial vertical water permeable holes are uniformly formed in the baffle plate.
The beneficial effects of the invention are as follows:
1. according to the invention, when the bar magnet continuously rotates, the bar magnet can stir alkaline solution horizontally, and the magnet disc below moves up and down along the desulfurization box due to magnetic force, so that the magnet disc vertically stirs the alkaline solution, alkaline medium is more uniformly distributed in the alkaline solution, and sulfuric acid liquid drops in flue gas can fully react with the alkaline solution; the baffle plate arranged in the air holes can block the upward movement speed of the air bubbles, so that the time of the air bubbles in the alkaline solution is prolonged, and the air bubbles are fully mixed with the alkaline solution for reaction.
2. According to the invention, the alkaline solution in the first air bag is sprayed out from the second spray head through the water injection pipe, and the second spray head sprays the alkaline solution, so that sulfuric acid droplets which are not neutralized by the alkaline solution can be prevented from being discharged from the smoke outlet pipe, sulfuric acid droplets in the smoke are further removed, and the sulfuric acid removal effect of the desulfurization acid box is improved; when the second air bag is compressed, the alkaline solution in the second air bag is sprayed out towards the horizontal direction, so that the air bubbles floating upwards are subjected to force in the horizontal direction, and the air bubbles move horizontally and then float upwards, so that the residence time of the air bubbles in the alkaline solution is prolonged, and the air bubbles are fully mixed and reacted with the alkaline solution.
3. According to the invention, the interception net is arranged, so that the resistance of the smoke discharged from the smoke outlet pipe can be increased, and trace solution carried in the smoke can be absorbed by the felt in time; the felt adsorbs a trace amount of alkaline solution, so that the alkaline solution is prevented from being discharged along with smoke, and environmental pollution and even harm to the health of personnel are caused.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an internal construction view of the sulfuric acid removal tank of the present invention;
FIG. 3 is a cross-sectional view of a magnet disc of the present invention;
FIG. 4 is a partially enlarged cross-sectional view of FIG. 2 at A;
in the figure: the denitration device comprises a denitration box 1, a desulfurization box 2, a desulfurization acid box 3, a smoke inlet pipe 4, an ammonia gas discharge pipe 5, a filter plate 6, an air pump 7, a water inlet pipe 8, an oxygen gas discharge pipe 9, an activated carbon plate 10, a communication pipe 11, a bushing 12, a smoke outlet pipe 13, a motor 14, a connecting rod 15, a bar magnet 16, a spring 17, a magnet disc 18, an air vent 19, a baffle 20, a first air bag 21, a water injection pipe 22, a second spray head 23, a deformation rod 24, a through hole 25, a bearing 26, a second air bag 27, an interception net 28, a felt 29, a water permeable hole 30 and a first spray head 31.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-4, the industrial flue gas desulfurization and denitrification dust remover comprises a denitrification box 1, a desulfurization box 2 and a desulfurization box 3, wherein the upper end of the denitrification box 1 is fixedly communicated with a smoke inlet pipe 4 and an ammonia gas discharge pipe 5, a filter plate 6 is fixedly arranged in the denitrification box 1, a reducing agent is filled in the filter plate 6, the denitrification box 1 is fixedly communicated with the desulfurization box 2 through an air pump 7, the air inlet end of the air pump 7 is communicated with the lower right end of the denitrification box 1, the air inlet end of the air pump 7 is positioned below the filter plate 6, and the air outlet end of the air pump 7 is communicated with the upper end of the desulfurization box 2;
the upper end of the desulfurization box 2 is fixedly communicated with a water inlet pipe 8 and an oxygen exhaust pipe 9, one end of the water inlet pipe 8 penetrating through the desulfurization box 2 is fixedly provided with a first spray head 31, an active carbon plate 10 is fixedly arranged in the desulfurization box 2, the desulfurization box 2 and the desulfurization acid box 3 are fixedly communicated through a communicating pipe 11, the air inlet end of the communicating pipe 11 is communicated with the lower right end of the desulfurization box 2, the air inlet end of the communicating pipe 11 is positioned below the active carbon plate 10, and the air outlet end of the communicating pipe 11 is communicated with the upper end of the desulfurization box 3;
the alkaline solution is filled in the desulphurizing tank 3, one end of the communicating pipe 11 penetrates through the desulphurizing tank 3 and is inserted into the bottom of the alkaline solution, the bottom end of the communicating pipe 11 is fixedly provided with the bushing 12, the middle part of the upper end surface of the desulphurizing tank 3 is fixedly provided with the motor 14, the output shaft of the motor 14 penetrates into the desulphurizing tank 3, the output shaft is fixedly provided with the vertical connecting rod 15, the lower end of the connecting rod 15 is fixedly provided with the horizontal bar magnet 16, the bar magnet 16 is fixedly connected with each other by two magnets, the magnetic poles of the two magnets in the same direction are opposite, the upper end surface of the desulphurizing tank 3 is fixedly connected with the smoke outlet pipe 13, the bottom part of the desulphurizing tank 3 is fixedly provided with the spring 17, one end of the spring 17 far away from the bottom of the desulphurizing tank 3 is fixedly provided with the magnet disc 18, the magnet disc 18 is fixedly connected with each other, the two magnet disc 18 is fixedly connected with the magnetic poles in the same direction, and the magnet disc 18 is in a sealing sliding connection with the inner wall of the desulphurizing tank 3; in the initial state, the left magnet of the bar magnet 16 is magnetically repelled with the left half disk of the magnet disk 18, and the right magnet of the bar magnet 16 is magnetically repelled with the right half disk of the magnet disk 18; a plurality of ventilation holes 19 are uniformly formed in the magnet disc 18, a baffle 20 is fixedly arranged in the ventilation holes 19, and the baffle 20 is bilaterally symmetrical and vertically distributed along the central axis of the ventilation holes 19;
during operation, firstly, industrial flue gas is discharged into the denitration box 1 from the smoke inlet pipe 4, and meanwhile, ammonia gas is discharged into the denitration box 1 from the ammonia gas discharge pipe 5, and after the ammonia gas, the flue gas and the reducing agent on the filter plate 6 are contacted, denitration is performed to remove amine oxides in the flue gas; after denitration is finished, the flue gas after denitration is pumped into the desulfurization box 2 through the air pump 7, meanwhile, oxygen is discharged into the desulfurization box 2 from the oxygen discharge pipe 9, sulfur dioxide in the flue gas is mixed with the oxygen to form sulfur trioxide, the sulfur trioxide is adsorbed on the activated carbon plate 10, the water is fed into the water inlet pipe 8, water is sprayed by the first spray nozzle 31, the sulfur trioxide reacts with the water to generate sulfuric acid, the sulfuric acid forming liquid is collected in the desulfurization box 2, and the flue gas after denitration and desulfurization carries partial sulfuric acid small liquid beads and is led into the desulfurization acid box 3 from the communicating pipe 11;
because the bushing 12 is positioned below the liquid level, the bushing 12 sprays the flue gas downwards in the shape of bubbles, meanwhile, the motor 14 is started, the output shaft of the motor 14 drives the connecting rod 15 and the bar magnet 16 to rotate, the bar magnet 16 horizontally stirs the alkaline solution in the desulphurizing tank 3 to prevent the alkaline medium in the alkaline solution from accumulating at the bottom of the desulphurizing tank 3, the bar magnet 16 horizontally stirs to uniformly distribute the alkaline medium in the alkaline solution, sulfuric acid liquid drops in the flue gas can fully react with the alkaline solution, in the initial state, the left magnet of the bar magnet 16 repels the left half disc of the magnet disc 18, the right magnet of the bar magnet 16 repels the right half disc of the magnet disc 18, the magnet disc 18 integrally faces downwards, and when the bar magnet 16 rotates to the left magnet of the bar magnet 16 attracts the left half disc of the magnet disc 18, when the right magnet of the bar magnet 16 is magnetically attracted to the right half disc of the magnet disc 18, the magnet disc 18 is integrally upwards, so that when the bar magnet 16 continuously rotates, the magnet disc 18 below moves up and down along the desulfurization box 2 due to magnetic force, so that the magnet disc 18 vertically agitates alkaline solution, alkaline medium is more uniformly distributed in alkaline solution, sulfuric acid droplets in flue gas can fully react with alkaline solution, the magnet disc 18 is hermetically and slidingly arranged in the desulfurization box 3, a plurality of ventilation holes 19 are uniformly formed in the magnet disc 18, bubbles move upwards from the ventilation holes 19, the baffle plate 20 arranged in the ventilation holes 19 can block the upward movement speed of the bubbles, the time of the bubbles in alkaline solution is prolonged, the bubbles are more fully mixed with the alkaline solution for reaction, and finally the flue gas after sulfuric acid removal is discharged from the smoke outlet pipe 13.
As an embodiment of the present invention, a first air bag 21 is fixedly installed on the bottom surface inside the desulphurizing acid tank 3, the first air bag 21 is located below the magnet plate 18, the upper surface of the first air bag 21 is fixedly connected with the magnet plate 18, the first air bag 21 is fixedly communicated with a water injection pipe 22, the other end of the water injection pipe 22 is located on the top surface inside the desulphurizing acid tank 3, a second spray head 23 is fixedly installed at one end of the water injection pipe far away from the first air bag 21, and a first nozzle is fixedly installed on the first air bag 21;
when in operation, the magnet disc 18 expands or compresses the first air bag 21 below while the magnet disc 18 slides up and down along the desulfate box 3; because the one-way valve is arranged between the second nozzle and the first air bag 21, air or solution can only be sprayed out from the second nozzle and can not enter from the second nozzle, so that when the first air bag 21 expands, the first air bag 21 only sucks alkaline solution through the first nozzle; because the one-way valve is arranged between the first nozzle and the first air bag 21, alkaline solution can only enter from the first nozzle and cannot be sprayed from the first nozzle, so that when the first air bag 21 is compressed, the alkaline solution in the first air bag 21 is sprayed from the second spray head 23 through the water injection pipe 22, and the second spray head 23 sprays the alkaline solution, so that sulfuric acid droplets which are not neutralized by the alkaline solution can be prevented from being discharged from the smoke outlet pipe 13, sulfuric acid droplets in smoke are further removed, and the sulfuric acid removal effect of the desulfurization acid tank 3 is improved.
As an embodiment of the present invention, a deformation rod 24 is fixedly mounted at a central position of a surface of the bar magnet 16 facing the magnet disc 18, the deformation rod 24 is of a diamond structure as a whole, the deformation rod 24 is formed by movably hinging 4 struts with the same size from head to tail, a plurality of through holes 25 are uniformly formed in the deformation rod 24, a bearing 26 is fixedly mounted at a central position of an upper end surface of the magnet disc 18, a lower end of the deformation rod 24 is rotatably mounted on the bearing 26, and rotation axes of the bearing 26, the deformation rod 24 and the bar magnet 16 are mutually overlapped;
when the alkaline solution stirring device works, the whole deformation rod 24 is diamond-shaped, and when the deformation rod 24 rotates, the deformation rod 24 can stir the alkaline solution, so that the alkaline medium is more uniformly distributed in the alkaline solution, and bubbles can fully react with the alkaline medium; through holes 25 on the deforming rod 24 can break up large bubbles into small bubbles when rotating, so that the contact area between the bubbles and alkaline solution is increased, and sulfuric acid in the bubbles is enabled to react with alkaline medium more fully.
As an embodiment of the present invention, a second air bag 27 is fixedly installed on the inner side of the diamond shape surrounded by the deformation rod 24, the second air bag 27 is located below the liquid level in the desulfate tank 3, and a second nozzle is fixedly installed on the second air bag 27;
in operation, as the bar magnet 16 rotates, the magnet disc 18 will move closer to or further from the bar magnet 16, compressing or expanding the deforming rod 24 in the vertical direction; when the deforming rod 24 is unfolded in the vertical direction, the second air bag 27 in the deforming rod 24 expands, and the alkaline solution enters the second air bag 27 from the second nozzle; when the deformation rod 24 is compressed in the vertical direction, the second air bag 27 in the deformation rod 24 is also compressed, the alkaline solution in the second air bag 27 is sprayed out from the second nozzle in the horizontal direction, so that the bubbles floating upwards are subjected to the force in the horizontal direction, and the bubbles move horizontally and then float upwards, so that the residence time of the bubbles in the alkaline solution is prolonged, and the bubbles are more fully mixed and reacted with the alkaline solution.
As an implementation mode of the invention, a conical interception net 28 is fixedly arranged on the inner wall of one end of the smoke outlet pipe 13, which is communicated with the sulfuric acid removal box 3, an opening of the interception net 28 faces to the bottom surface of the sulfuric acid removal box 3, a felt 29 is fixedly arranged on the inner wall of the opening of the interception net 28, and the outer diameter of the opening of the interception net 28 is equal to the inner diameter of the smoke outlet pipe 13;
through setting up interception net 28, can increase the flue gas from the exhaust resistance of play tobacco pipe 13 for the trace solution that carries in the flue gas can in time be adsorbed by felt 29, and felt 29 adsorbs trace alkaline solution, prevents that alkaline solution from following the flue gas discharge, causes the pollution of environment and even endangers personnel's health.
As an embodiment of the present invention, the baffle 20 is uniformly provided with a plurality of axial vertical water permeable holes 30;
when the magnet disc 18 moves up and down, the alkaline solution continuously impacts the baffle 20, the baffle 20 can be continuously stressed by force in the vertical direction of the solution, as only one end of the baffle 20 is fixed in the air holes 19, the baffle 20 can possibly fall off from the air holes 19, water can flow out of the water holes 30 through arranging the vertical water holes 30 on the baffle 20, the damage of the baffle 20 caused by water impact is prevented, and when air bubbles are discharged from the water holes 30, the water holes 30 can extrude large air bubbles into a plurality of air bubbles with smaller diameters, so that the contact area between the air bubbles and the alkaline solution is increased, and sulfuric acid in the air bubbles can react with alkaline medium more fully.
The specific working procedure is as follows:
during operation, firstly, industrial flue gas is discharged into the denitration box 1 from the smoke inlet pipe 4, and meanwhile, ammonia gas is discharged into the denitration box 1 from the ammonia gas discharge pipe 5, and after the ammonia gas, the flue gas and the reducing agent on the filter plate 6 are contacted, denitration is performed to remove amine oxides in the flue gas; after denitration is finished, the flue gas after denitration is pumped into the desulfurization box 2 through the air pump 7, meanwhile, oxygen is discharged into the desulfurization box 2 from the oxygen discharge pipe 9, sulfur dioxide in the flue gas is mixed with the oxygen to form sulfur trioxide, the sulfur trioxide is adsorbed on the activated carbon plate 10, the water is fed into the water inlet pipe 8, water is sprayed by the first spray nozzle 31, the sulfur trioxide reacts with the water to generate sulfuric acid, the sulfuric acid forming liquid is collected in the desulfurization box 2, and the flue gas after denitration and desulfurization carries partial sulfuric acid small liquid beads and is led into the desulfurization acid box 3 from the communicating pipe 11;
the bushing 12 sprays the flue gas downwards in the shape of bubbles, simultaneously, motor 14 starts, motor 14's output shaft drives connecting rod 15 and bar magnet 16, warp pole 24 rotation, bar magnet 16 and warp pole 24 stirring take off the alkaline solution in the sulfuric acid tank 3, under the initial state, the magnet on the left side of bar magnet 16 is mutually exclusive with magnet disk 18 left half disc magnetism, magnet on the right side of bar magnet 16 is mutually exclusive with magnet disk 18 right half disc magnetism, magnet disk 18 whole is downward, magnet disk 18 can compress first gasbag 21 below, alkaline solution in the first gasbag 21 is through water injection pipe 22 blowout from second shower nozzle 23, when bar magnet 16 rotates to the magnet on the left side of bar magnet 16 and magnet disk 18 left half disc magnetism looks attraction, magnet disk 18 whole upwards, the magnet on the right side of bar magnet 16 is compressed with magnet disk 18 right half disc magnetism, the alkaline solution in the second gasbag 27 is to horizontal direction blowout, make the horizontal direction upward air bubble that goes out of the horizontal direction of pressure of force, the alkaline solution that makes progress in the second gasbag 27 receive, the horizontal direction of motion of the horizontal direction of lift the bubble in the bar magnet 16 is carried out of the ammonia gas 13, the alkaline solution is discharged from the flue gas pipe 13 through the suction net of the exhaust flue gas that is carried out, the alkaline solution is discharged from the flue gas of the stack 13 through the exhaust gas of the net that is finally.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An industrial flue gas desulfurization and denitrification dust remover is characterized in that: the flue gas desulfurization device comprises a denitration box (1), a desulfurization box (2) and a desulfurization acid box (3), wherein a flue gas inlet pipe (4) and an ammonia gas discharge pipe (5) are fixedly communicated with the upper end of the denitration box (1), a filter plate (6) is fixedly installed in the denitration box (1), a reducing agent is filled in the filter plate (6), the denitration box (1) is fixedly communicated with the desulfurization box (2) through an air pump (7), the air inlet end of the air pump (7) is communicated with the lower right end of the denitration box (1), the air inlet end of the air pump (7) is located below the filter plate (6), and the air outlet end of the air pump (7) is communicated with the upper end of the desulfurization box (2);
the desulfurization device comprises a desulfurization box (2), wherein the upper end of the desulfurization box (2) is fixedly communicated with a water inlet pipe (8) and an oxygen exhaust pipe (9), the water inlet pipe (8) penetrates through one end of the desulfurization box (2) and is fixedly provided with a first spray head (31), an active carbon plate (10) is fixedly arranged in the desulfurization box (2), the desulfurization box (2) and the desulfurization acid box (3) are fixedly communicated through a communicating pipe (11), the air inlet end of the communicating pipe (11) is communicated with the lower right end of the desulfurization box (2), the air inlet end of the communicating pipe (11) is positioned below the active carbon plate (10), and the air outlet end of the communicating pipe (11) is communicated with the upper end of the desulfurization acid box (3);
the alkaline solution is filled in the desulphurizing acid box (3), one end of the communicating pipe (11) penetrates through the desulphurizing acid box (3) to be inserted into the bottom of the alkaline solution, a bushing plate (12) is fixedly arranged at the bottom end of the communicating pipe (11), a motor (14) is fixedly arranged at the middle position of the upper end surface of the desulphurizing acid box (3), an output shaft of the motor (14) penetrates into the desulphurizing acid box (3), a vertical connecting rod (15) is fixedly arranged on the output shaft, horizontal bar magnets (16) are fixedly arranged at the lower ends of the connecting rod (15), the bar magnets (16) are fixedly connected with each other by two magnets, the magnetic poles of the two magnets in the same direction are opposite, a smoke outlet pipe (13) is fixedly connected with the upper end surface of the desulphurizing acid box (3), a magnet disc (18) is fixedly arranged at one end of the spring (17) far away from the bottom of the desulphurizing acid box (3), the magnet disc (18) is fixedly connected with the two magnet discs in each other, and the two magnet discs (18) in the same direction are opposite to the inner wall of the desulphurizing acid box (3) in a sliding manner; in an initial state, the left magnet of the bar magnet (16) magnetically repels the left half disk of the magnet disk (18), and the right magnet of the bar magnet (16) magnetically repels the right half disk of the magnet disk (18); a plurality of ventilation holes (19) are uniformly formed in the magnet disc (18), a baffle plate (20) is fixedly arranged in the ventilation holes (19), and the baffle plate (20) is bilaterally symmetrical and vertically distributed along the central axis of the ventilation holes (19);
the desulfurization device is characterized in that a first air bag (21) is fixedly arranged on the bottom surface inside the desulfurization box (3), the first air bag (21) is positioned below the magnet disc (18), the upper surface of the first air bag (21) is fixedly connected with the magnet disc (18), the first air bag (21) is fixedly communicated with a water injection pipe (22), the other end of the water injection pipe (22) is positioned on the top surface inside the desulfurization box (3), a second spray head (23) is fixedly arranged at one end, far away from the first air bag (21), of the water injection pipe, and a first spray nozzle is fixedly arranged on the first air bag (21);
the strip-shaped magnet (16) is fixedly provided with a deformation rod (24) towards the center of one surface of the magnet disc (18), the deformation rod (24) is of a diamond structure as a whole, the deformation rod (24) is formed by hinging 4 support rods with the same size in a head-tail movable mode, a plurality of through holes (25) are uniformly formed in the deformation rod (24), the center of the upper end surface of the magnet disc (18) is fixedly provided with a bearing (26), the lower end of the deformation rod (24) is rotatably arranged on the bearing (26), and rotation shafts of the bearing (26), the deformation rod (24) and the strip-shaped magnet (16) are mutually overlapped;
a second air bag (27) is fixedly arranged on the inner side of the diamond surrounded by the deformation rod (24), the second air bag (27) is positioned below the liquid level in the desulfate box (3), and a second nozzle is fixedly arranged on the second air bag (27);
the bushing plate (12) sprays the fume downwards in the shape of bubbles, meanwhile, the motor (14) is started, the output shaft of the motor (14) drives the connecting rod (15) and the bar magnet (16) and the deformation rod (24) to rotate, the bar magnet (16) and the deformation rod (24) stir and remove alkaline solution in the sulfuric acid tank (3), in an initial state, the magnet on the left side of the bar magnet (16) is repulsed with the left half disk of the magnet disk (18), the magnet on the right side of the bar magnet (16) is repulsed with the right half disk of the magnet disk (18) in a magnetic way, the magnet disk (18) is wholly downwards, the magnet disk (18) compresses a first air bag (21) below, alkaline solution in the first air bag (21) is sprayed out from a second spray head (23) through a water injection pipe (22), when the magnet on the left side of the bar magnet (16) rotates to attract the magnet on the left side of the bar magnet (16) to the left half disk of the magnet disk (18), when the magnet on the right side of the bar magnet (16) is attracted with the right half disk of the magnet disk (18), the magnet disk (18) is wholly attracted with the right half disk of the magnet disk, the magnet (24) is wholly attracted, the second air bag (24) is compressed upwards, the alkaline solution is blown out of the air bag horizontally upwards, and the air bag is horizontally compressed upwards, and the air bubble is horizontally upwards sprayed out, and the air bubble is horizontally compressed upwards, and the air bag is sprayed upwards, and the air bubble is horizontally upwards sprayed out, the flue gas from which the sulfuric acid is removed is adsorbed to alkaline solution in the flue gas through an interception net (28) in the flue gas outlet pipe (13), and finally the flue gas is discharged from the flue gas outlet pipe (13).
2. The industrial flue gas desulfurization and denitrification dust remover according to claim 1, wherein: the inner wall of one end of the smoke outlet pipe (13) communicated with the desulfate box (3) is fixedly provided with a conical interception net (28), an opening of the interception net (28) faces the bottom surface of the desulfate box (3), a felt (29) is fixedly arranged on the inner wall of the opening of the interception net (28), and the outer diameter of the opening of the interception net (28) is equal to the inner diameter of the smoke outlet pipe (13).
3. The industrial flue gas desulfurization and denitrification dust remover according to claim 1, wherein: a plurality of axial vertical water permeable holes (30) are uniformly formed in the baffle plate (20).
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| CN114653152B (en) * | 2022-03-23 | 2023-03-31 | 南通宏久金属制品有限公司 | Fume extractor for metal casting processing desulfurization |
| CN114797408B (en) * | 2022-04-08 | 2024-01-12 | 重庆金凯特殊钢制品有限公司 | Steelmaking furnace is handled to waste gas high efficiency |
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