CN116474539A - Boiler dust removal desulfurization denitrification facility - Google Patents

Boiler dust removal desulfurization denitrification facility Download PDF

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Publication number
CN116474539A
CN116474539A CN202310459532.0A CN202310459532A CN116474539A CN 116474539 A CN116474539 A CN 116474539A CN 202310459532 A CN202310459532 A CN 202310459532A CN 116474539 A CN116474539 A CN 116474539A
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China
Prior art keywords
box
wall
pipe
dust removal
dust
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Pending
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CN202310459532.0A
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Chinese (zh)
Inventor
谭卫成
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Individual
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Individual
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Priority to CN202310459532.0A priority Critical patent/CN116474539A/en
Publication of CN116474539A publication Critical patent/CN116474539A/en
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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
    • B01D53/74—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
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
    • 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
    • B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a dust removal, desulfurization and denitrification device for a boiler, which comprises a spray box, wherein the bottom of the spray box is communicated with a washing box, the top of the spray box is communicated with an exhaust pipe, and purification mechanisms are arranged inside and outside the washing box and the spray box; the purification mechanism comprises a dust removal box and a rotating shaft, wherein a dust-proof net group is fixedly arranged on the inner wall of the dust removal box, a heat exchange box is arranged on the right inner wall of the dust removal box through pipeline communication, a communicating pipe is arranged on the right inner wall of the heat exchange box, dust in smoke is filtered out through the dust removal box and the dust-proof net group, the filtered dust is left in the dust removal box, the cleaned dust is not required to be left in a hydrogen oxide solution, a communicating pipe and an electromagnetic valve are arranged to control the time of the smoke entering a washing box from the heat exchange box, a bending air pipe and an air hole are arranged to increase the channel of the smoke entering the washing box, and the smoke is distributed more uniformly in the washing box.

Description

Boiler dust removal desulfurization denitrification facility
Technical Field
The invention relates to the technical field of boiler dust removal desulfurization and denitrification devices, in particular to a boiler dust removal desulfurization and denitrification device.
Background
The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy. The boiler generally adopts raw coal as fuel, the discharged flue gas contains atmospheric pollutants such as SO2, NO and particulate matters, SO that serious pollution is caused to the atmospheric environment of China, when the device for dedusting, desulfurizing and denitrating the flue gas is actually used, the contact area of desulfurization and denitrating solution and the flue gas is not complete enough, the flue gas can not be completely absorbed, and the effects of dedusting, desulfurizing and denitrating are reduced;
the prior Chinese patent CN 211837170U discloses a high-efficiency boiler dust removal desulfurization denitration device, which rotates through a first scraping plate and a second scraping plate to crush bubbles formed by smoke and hydrogen oxide solution, SO that large bubbles are crushed into small bubbles, the contact area of the smoke and the hydrogen oxide solution is effectively increased, the hydrogen oxide solution is beneficial to oxidizing and absorbing SO2 and NO in smoke dust, and meanwhile, both sides of a dust screen group can be cleaned through the first scraping plate and the second scraping plate, the dust screen group is prevented from being blocked by dust, and the filtering effect of dust in the smoke is effectively improved;
however, the dust in the flue gas is cleaned in the spray box by the high-efficiency boiler dust removal desulfurization denitration device, SO that the dust cleaned by the dust screen group is easily dissolved into the hydrogen oxide solution in the spray box, the subsequent filtering difficulty of the hydrogen oxide solution is increased, and after a large amount of dust is accumulated in the hydrogen oxide solution, the contact area between the hydrogen oxide solution and SO2 and NO in the flue gas is reduced, SO that the SO2 and NO are less easily oxidized and absorbed.
Disclosure of Invention
The invention aims to provide a dedusting, desulfurizing and denitrating device for a boiler, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the dust removal, desulfurization and denitrification device for the boiler comprises a spray box, wherein the bottom of the spray box is communicated with a washing box, the top of the spray box is communicated with an exhaust pipe, and a purification mechanism is arranged inside and outside the washing box and the spray box;
the purifying mechanism comprises a dust removing box and a rotating shaft, wherein a rear dust screen group is fixedly arranged on the inner wall of the dust removing box, a heat exchange box is arranged on the right inner wall of the dust removing box through pipeline communication, a communicating pipe is arranged on the right inner wall of the heat exchange box through pipeline communication, an electromagnetic valve is fixedly arranged at the right end of the communicating pipe, a bent air pipe is arranged at the right end of the electromagnetic valve through pipeline communication, the bent air pipe is positioned in the washing box, an air hole is formed in the outer wall of the bent air pipe, the rotating shaft penetrates through the top of the spraying box through a bearing, a rotary joint is fixedly arranged at the bottom of the rotating shaft, a hollow pipe is fixedly arranged at the bottom of the rotary joint, and a nozzle is arranged on the outer wall of the hollow pipe through communication;
the inside fixed mounting of dust removal case has clearance mechanism, the outer wall fixed mounting of heat transfer case has pretreatment mechanism, the inside of spray box is provided with buffer gear.
According to the technical scheme, pretreatment mechanism includes heat exchange sleeve, heater, the inner wall of heat exchange sleeve and the outer wall fixed connection of blast pipe, the inner wall intercommunication of heat exchange sleeve is provided with the inlet tube, the bottom intercommunication of inlet tube is provided with circulating water pump, circulating water pump's water inlet end is provided with the water tank through the pipeline intercommunication, the inner wall of water tank is provided with the water pipe of buckling through the pipeline intercommunication, the water pipe of buckling is located the heat exchange incasement, the one end port intercommunication of keeping away from the water tank of water pipe of buckling is provided with the outlet pipe, the top and the inner wall intercommunication of heat exchange sleeve of outlet pipe, the outer wall of heater and the back fixed connection of heat exchange case, the heating end fixed mounting of heater has the hot plate, the hot plate is located the heat exchange incasement.
According to the technical scheme, buffer gear includes buffer tank, slip ring, U type pipe, the bottom of buffer tank and the top fixed connection of heat transfer case, and the inside of buffer tank and the inside intercommunication of heat transfer case, the inner wall slip of buffer tank is provided with a piston, the top fixed mounting of a piston has the gag lever post, the gag lever post activity runs through the top of buffer tank, the top fixed mounting of a piston has the spring, the top of spring and the inner wall fixed connection of buffer tank top, slip ring slip cap is established on the hollow tube, the outer wall fixed mounting of slip ring has No. two pistons, the edge outer wall of No. two pistons and the laminating of the inner wall of spray tank, two upper and lower ports of U type pipe all stretch into the spray tank in, the outer wall of U type pipe and the inner wall fixed connection of spray tank.
According to the technical scheme, cleaning mechanism includes dust collection box, cleaning brush, division board fixed mounting is in the dust removal case, and the top of division board and the bottom fixed connection of dust screen group, dust collection box joint is in the dust removal case, and the dust collection box is located the below of division board, the dust collection box passes through the outer wall fixed connection of fixed screw and dust removal case, the inner wall fixed mounting of dust collection box has the baffle, ash leakage groove has been seted up at the top of division board, and this ash leakage groove is located the baffle directly over, the top fixed mounting of cleaning brush has the pull rod, the pull rod activity runs through the top of dust removal case.
According to the technical scheme, the inner wall of rotary joint communicates and is provided with the water conservancy diversion pipeline, the bottom intercommunication of water conservancy diversion pipeline is provided with the drawing liquid pump, the feed liquor end of drawing liquid pump is provided with the purifying liquid through pipeline intercommunication and deposits the case.
According to the technical scheme, the motor is fixedly arranged at the top of the rotating shaft, the fixing plate is fixedly arranged on the outer wall of the motor, the bottom of the fixing plate is fixedly connected with the top of the spray box, and the stirring blade is fixedly arranged on the outer wall of the hollow pipe.
According to the technical scheme, the front side of the washing box is communicated with the liquid inlet pipe, the front side of the washing box is communicated with the liquid outlet pipe, and the inner walls of the liquid inlet pipe and the liquid outlet pipe are both provided with the manual valve.
According to the technical scheme, the outside of inlet tube and outlet pipe is all fixed mounting has thermal-insulated cotton, leave the clearance between buckling water pipe and the hot plate, the hot plate is provided with two, and upper and lower symmetric distribution is in the heat transfer box.
According to the technical scheme, the vent holes are formed in the top of the buffer box, the U-shaped pipes are arranged in the latter four modes, and the circumferential arrays are distributed on the spray box.
According to the technical scheme, the pull rod is fixedly arranged at the top of the pull rod, and the outer wall of the cleaning brush is attached to the outer wall of the dust-proof net group.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, dust in the flue gas is filtered out by arranging the dust removing box and the dust screen group, so that the filtered dust is left in the dust removing box, the cleaned dust is not required to be left in the hydrogen oxide solution, the time for the flue gas to enter the washing box from the heat exchange box is controlled by arranging the communicating pipe and the electromagnetic valve, and the channels for the flue gas to enter the washing box are increased by arranging the bent air pipe and the air holes, so that the flue gas is distributed more uniformly in the washing box;
2. according to the invention, the heating plate is heated by the heater, so that the heating plate heats the flue gas in the heat exchange box, the reverse speed of the flue gas and the hydrogen oxide solution is accelerated after the temperature of the flue gas rises, the water in the water tank is pumped into the heat exchange sleeve by the circulating water pump, so that cold water in the heat exchange sleeve absorbs the heat of the flue gas in the exhaust pipe, and then the cold water is introduced into the bent water pipe, so that the flue gas in the heat exchange box is continuously heated, and the benefit efficiency of the heat is improved;
3. when the electromagnetic valve is closed, a large amount of flue gas is reserved in the heat exchange box, the flue gas pushes the first piston to move upwards, when the part of flue gas is heated, the electromagnetic valve is opened, the flue gas enters the bent air pipe from the communicating pipe, then enters the washing box from the air hole on the bent air pipe, and the second piston is pushed to move up and down along with the flue gas entering the washing box, but the spray box is divided into an upper part and a lower part by the second piston at the moment, SO that the flue gas cannot pass through the spray box and then is discharged from the exhaust pipe, the residence time of the flue gas in the spray box and the washing box is prolonged, SO that SO2 and NO in the flue gas are fully absorbed by the hydrogen oxide solution, when the position of the second piston is higher than the lower end opening of the U-shaped pipe, the upper space and the lower space of the spray box are communicated, and the flue gas is discharged from the exhaust pipe after entering the upper part;
4. when the dust screen group is required to be cleaned, the smoke is stopped from being introduced into the dust box, then the tool is used for taking out the fixing screw, the dust box is pulled leftwards, the baffle is driven to move, the baffle is enabled to no longer block the ash leakage groove, the pull rod is pulled up and down to drive the cleaning brush to clean the dust screen group, cleaned dust falls into the dust box from the ash leakage groove, and cleaning of the dust screen group is completed.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the back side view of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the front cross-section of the dust removing box of the present invention;
FIG. 4 is an exploded view and schematic view of the internal structure of the dust removing box of the present invention;
FIG. 5 is a schematic illustration of the heat exchange and buffer tanks of the present invention in front cross-section;
FIG. 6 is a schematic illustration of the front cross-sectional structure of the spray tank and the wash tank of the present invention;
fig. 7 is a schematic view of the hollow tube and the second piston structure of the present invention.
In the figure: 1. a fixing plate; 2. a motor; 3. a spray box; 4. a washing box; 5. a pretreatment mechanism; 501. a heat exchange sleeve; 502. a circulating water pump; 503. a water tank; 504. a water inlet pipe; 505. a water outlet pipe; 506. bending the water pipe; 507. a heating plate; 508. a heater; 6. a purifying mechanism; 601. a dust removal box; 602. a heat exchange box; 603. an electromagnetic valve; 604. a communicating pipe; 605. a rotating shaft; 606. a rotary joint; 607. a hollow tube; 608. a nozzle; 609. a dust-proof net group; 6010. bending the air pipe; 7. a cleaning mechanism; 701. a dust collection box; 702. a set screw; 703. a baffle; 704. cleaning brushes; 705. a pull rod; 706. a partition plate; 707. an ash leakage groove; 8. a buffer mechanism; 801. a buffer tank; 802. a limit rod; 803. a spring; 804. a first piston; 805. a slip ring; 806. a second piston; 807. a U-shaped tube; 9. a liquid inlet pipe; 10. a liquid outlet pipe; 11. a purifying liquid storage tank; 12. a liquid pump; 13. a diversion pipeline; 14. stirring blades; 15. and an exhaust pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preferred embodiments of the dust removal, desulfurization and denitrification device for a boiler provided by the invention are shown in fig. 1 to 7: the dust removal, desulfurization and denitrification device for the boiler comprises a spray box 3, wherein the bottom of the spray box 3 is communicated with a washing box 4, the top of the spray box 3 is communicated with an exhaust pipe 15, and a purification mechanism 6 is arranged inside and outside the washing box 4 and the spray box 3;
the purification mechanism 6 comprises a dust removal box 601 and a rotating shaft 605, wherein a dust screen group 609 is fixedly arranged on the inner wall of the dust removal box 601, dust in the flue gas is filtered by the dust removal box 601 and the dust screen group 609, the filtered dust is left in the dust removal box 601, the inner wall on the right side of the dust removal box 601 is communicated with a heat exchange box 602 through a pipeline, the inner wall on the right side of the heat exchange box 602 is communicated with a communicating pipe 604, the right end of the communicating pipe 604 is fixedly provided with an electromagnetic valve 603, the right end of the electromagnetic valve 603 is communicated with a bending air pipe 6010 through the pipeline, the communicating pipe 604 and the electromagnetic valve 603 are arranged to control the time of the flue gas entering the washing box 4 from the heat exchange box 602, the bending air pipe 6010 is positioned in the washing box 4, and the outer wall of the bending air pipe 6010 is provided with air holes, the bending air pipe 6010 and the air holes are arranged to increase the passage of the flue gas entering the washing box 4, so that the flue gas is distributed more uniformly in the washing box 4, the rotating shaft 605 penetrates through the top of the spraying box 3, the bottom of the rotating shaft 605 is fixedly provided with a rotating joint 606, the bottom of the rotating joint 606 is fixedly arranged with a hollow pipe 607, the outer wall 607 of the hollow pipe 607 is communicated with the electromagnetic valve, the nozzle 607 is arranged on the right end of the rotating pipe, the electromagnetic valve 607 is communicated with the time of the rotating pipe and the electromagnetic valve 60607, the time is arranged in the rotating pipe and the rotating joint 60607, the time of the rotating joint 605 can drive the rotating shaft 606 to rotate the rotating and the rotating shaft 606 to rotate in the rotating and the rotating shaft 3 through the rotating and the rotating joint 606, and the spraying 3;
the cleaning mechanism 7 is fixedly arranged in the dust removal box 601, the pretreatment mechanism 5 is fixedly arranged on the outer wall of the heat exchange box 602, and the buffer mechanism 8 is arranged in the spray box 3;
the flue gas is introduced into the dust removal box 601, dust in the flue gas is filtered by the dust-proof net group 609 and then enters the heat exchange box 602, after the flue gas is pretreated by the heat exchange box 602, the electromagnetic valve 603 is opened to enable the pretreated flue gas to enter the bent air pipe 6010 from the communicating pipe 604, then enter the washing box 4 from the air holes on the bent air pipe 6010, contact with the hydrogen oxide solution in the washing box 4 to be absorbed with SO2 and NO therein, then rise into the spray box 3, the hydrogen oxide solution is sprayed by the nozzle 608 in the spray box 3 to be secondarily purified, and finally the flue gas is discharged from the exhaust pipe 15.
In this embodiment, the inner wall intercommunication of rotary joint 606 is provided with water conservancy diversion pipeline 13, the bottom intercommunication of water conservancy diversion pipeline 13 is provided with drawing liquid pump 12, the feed liquor end of drawing liquid pump 12 is provided with purifying liquid through the pipeline intercommunication and deposits case 11, do benefit to drawing liquid pump 12 and deposit the hydrogen oxide solution in the case 11 and go into in the water conservancy diversion pipeline 13, then enter into rotary joint 606, add hydrogen oxide solution in lasting hollow tube 607, the top fixed mounting of pivot 605 has motor 2, the fixed plate 1 is installed to the outer wall fixed mounting of motor 2, the bottom of fixed plate 1 and the top fixed connection of spray case 3, the outer wall fixed mounting of hollow tube 607 has stirring vane 14, set up fixed plate 1 and fix motor 2, it rotates to drive the pivot 605 through rotary joint 606, and then drive nozzle 608 rotates, make nozzle 608 evenly spray hydrogen oxide solution to spray in the spray case 3, hollow tube 607 rotates and drives stirring vane 14, stir hydrogen oxide solution in the scrubbing case 4, make hydrogen oxide solution and contact more even, the front intercommunication of scrubbing case 4 is provided with stirring vane 14, the feed liquor 9 is provided with in the front of scrubbing case 4 and the inner wall 10 is provided with the drain valve 10 for the liquid is connected to the inner wall of scrubbing case 4, the front is provided with the drain 10.
Example 2
On the basis of embodiment 1, the preferred embodiment of the dust removal, desulfurization and denitrification device for a boiler provided by the invention is shown in fig. 1 to 7: the pretreatment mechanism 5 comprises a heat exchange sleeve 501 and a heater 508, wherein the inner wall of the heat exchange sleeve 501 is fixedly connected with the outer wall of the exhaust pipe 15, the inner wall of the heat exchange sleeve 501 is communicated with a water inlet pipe 504, the bottom of the water inlet pipe 504 is communicated with a circulating water pump 502, the water inlet end of the circulating water pump 502 is communicated with a water tank 503 through a pipeline, the inner wall of the water tank 503 is communicated with a bending water pipe 506, the bending water pipe 506 is positioned in a heat exchange box 602, one end port of the bending water pipe 506 far away from the water tank 503 is communicated with a water outlet pipe 505, the top end of the water outlet pipe 505 is communicated with the inner wall of the heat exchange sleeve 501, the outer wall of the heater 508 is fixedly connected with the back of the heat exchange box 602, the heating end of the heater 508 is fixedly provided with a heating plate 507, the heating plate 507 is positioned in the heat exchange box 602, the heater 508 is arranged to heat the heating plate 507, and then the flue gas entering the heat exchange box 602 is heated, in the embodiment, the heater 508 selects a semiconductor refrigerating sheet, the heating end of the semiconductor refrigerating sheet is a heat release surface, the heating plate 507 selects a heat conducting aluminum plate, the circulating water pump 502 is arranged to pump the water in the water tank 503 into the heat exchange sleeve 501, so that cold water in the heat exchange sleeve 501 absorbs heat of flue gas in the exhaust pipe 15 and then is led into the bending water pipe 506 to continuously heat the flue gas in the heat exchange box 602, the benefit efficiency of heat is improved, the heat insulation cotton is fixedly arranged outside the water inlet pipe 504 and the water outlet pipe 505, the heat exchange between the water inlet pipe 504 and the water outlet pipe 505 and the outside air is avoided, a gap is reserved between the bending water pipe 506 and the heating plate 507, the high-temperature heating plate 507 is prevented from damaging the bending water pipe 506, and enough flue gas flowing space is ensured to be reserved in the heat exchange box 602, the two heating plates 507 are arranged and are distributed in the heat exchange box 602 up and down symmetrically, the contact area between the heating plate 507 and the flue gas is increased, the heating efficiency to the flue gas is improved, the heater 508 is started to heat the heating plate 507, the heating plate 507 heats the flue gas in the heat exchange box 602, the reverse speed of the flue gas and the hydrogen oxide solution is accelerated after the temperature of the flue gas rises, the circulating water pump 502 is started to pump the water in the water tank 503 into the heat exchange sleeve 501, cold water in the heat exchange sleeve 501 absorbs the heat of the flue gas in the exhaust pipe 15, and then the cold water is introduced into the bending water pipe 506, so that the flue gas in the heat exchange box 602 is continuously heated, and the benefit efficiency of the heat is improved.
Example 3
On the basis of embodiments 1 and 2, a preferred embodiment of the dust removal, desulfurization and denitrification device for a boiler provided by the invention is shown in fig. 1 to 7: the buffer mechanism 8 comprises a buffer box 801, a sliding ring 805 and a U-shaped tube 807, wherein the bottom of the buffer box 801 is fixedly connected with the top of the heat exchange box 602, the inside of the buffer box 801 is communicated with the inside of the heat exchange box 602, a first piston 804 is slidably arranged on the inner wall of the buffer box 801, a limit rod 802 is fixedly arranged on the top of the first piston 804, the limit rod 802 movably penetrates through the top of the buffer box 801, a spring 803 is fixedly arranged on the top of the first piston 804, the top of the spring 803 is fixedly connected with the inner wall of the top of the buffer box 801, the limit rod 802 is arranged to limit the spring 803, the spring 803 can only stretch and compress in the vertical direction, the first piston 804 is arranged by utilizing the height of the first piston 804 in the buffer box 801, the smoke can be reserved in the buffer box 801, the first piston 804 is pushed downwards by the spring 803, the smoke in the buffer box 801 is extruded, the sliding ring 805 is slidably sleeved on the hollow tube 607, the outer wall of the sliding ring 805 is fixedly provided with a second piston 806, the sliding ring 805 is arranged to enable the second piston 806 to move up and down relative to the hollow pipe 607, the outer wall of the edge of the second piston 806 is attached to the inner wall of the spray box 3, the second piston 806 can divide the spray box 3 into an upper space and a lower space which are not communicated with each other, the upper port and the lower port of the U-shaped pipe 807 extend into the spray box 3, the outer wall of the U-shaped pipe 807 is fixedly connected with the inner wall of the spray box 3, the U-shaped pipe 807 can be communicated with the upper layer and the lower layer, the top of the buffer box 801 is provided with vent holes, when the first piston 804 moves upwards, air in the buffer box 801 can be smoothly discharged, the U-shaped pipe 807 is arranged to be four later, and the circumferential array is distributed on the spray box 3, ventilation channels of the U-shaped pipe 807 are increased, when the flue gas is preprocessed, the electromagnetic valve 603 is closed, a large amount of flue gas remains in the heat exchange box 602, as the flue gas gets more, the flue gas upwards pushes the first piston 804 to move upwards, after the heating of the part of flue gas is finished, the electromagnetic valve 603 is opened, the flue gas enters the bent gas pipe 6010 from the communicating pipe 604, then enters the washing tank 4 from the upper gas hole of the bent gas pipe 6010, the second piston 806 is pushed to move up and down along with the flue gas entering the washing tank 4, but at the moment, the spraying tank 3 is divided into an upper part and a lower part by the second piston 806, SO the flue gas can not pass through the spraying tank 3 and then is discharged from the exhaust pipe 15, the residence time of the flue gas in the spraying tank 3 and the washing tank 4 is prolonged, SO that the SO2 and NO in the flue gas are fully absorbed by the hydrogen oxide solution, when the position of the second piston 806 is higher than the lower port of the U-shaped pipe 807, the upper space and the lower space of the spraying tank 3 are communicated, and the flue gas is discharged from the exhaust pipe 15 after entering the upper part.
Example 4
On the basis of embodiment 1, the preferred embodiment of the dust removal, desulfurization and denitrification device for a boiler provided by the invention is shown in fig. 1 to 7: the cleaning mechanism 7 comprises a dust box 701, a cleaning brush 704 and a separation plate 706, wherein the separation plate 706 is fixedly arranged in the dust box 601, the top of the separation plate 706 is fixedly connected with the bottom of the dust screen group 609, the separation plate 706 is arranged to divide the dust box 601 into an upper part and a lower part, the dust box 701 is clamped in the dust box 601, the dust box 701 is positioned below the separation plate 706, the dust box 701 is fixedly connected with the outer wall of the dust box 601 through a fixing screw 702, the dust box 701 is arranged to collect dust intercepted by the dust screen group 609, a baffle 703 is fixedly arranged on the inner wall of the dust box 701, a dust leakage groove 707 is formed in the top of the separation plate 706, the dust leakage groove 707 is positioned right above the baffle 703, the dust above the separation plate 706 can fall below, the baffle 703 is arranged to shield the dust leakage groove 707, the flue gas is prevented from leaking from the ash leakage groove 707, the pull rod 705 is fixedly arranged at the top of the cleaning brush 704, the pull rod 705 movably penetrates through the top of the dust removal box 601, the outer wall of the cleaning brush 704 is attached to the outer wall of the dust screen group 609, the cleaning brush 704 is arranged for cleaning the dust screen group 609, the pull rod 705 is arranged for pulling the cleaning brush 704 up and down, a pull plate is fixedly arranged at the top of the pull rod 705, the pull rod 705 is convenient to pull, when the dust screen group 609 needs to be cleaned, the flue gas is stopped from being introduced into the dust removal box 601, then the fixing screw 702 is taken out by using a tool, the dust box 701 is pulled leftwards, the baffle 703 is further driven to move, the baffle 703 does not block the ash leakage groove 707, the cleaning brush 704 is driven by pulling the pull rod 705 up and down to clean the dust screen group 609, and cleaned dust falls into the dust box 701 from the ash leakage groove 707, and the dust screen group 609 is cleaned after the dust is completed.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a boiler dust removal SOx/NOx control device, includes spray box (3), its characterized in that: the bottom of the spray box (3) is communicated with a washing box (4), the top of the spray box (3) is communicated with an exhaust pipe (15), and a purifying mechanism (6) is arranged inside and outside the washing box (4) and the spray box (3);
the purification mechanism (6) comprises a dust removal box (601) and a rotating shaft (605), wherein a dust screen group (609) is fixedly arranged on the inner wall of the dust removal box (601), a heat exchange box (602) is arranged on the right inner wall of the dust removal box (601) through pipeline communication, a communicating pipe (604) is arranged on the right inner wall of the heat exchange box (602) through communication, an electromagnetic valve (603) is fixedly arranged at the right end of the communicating pipe (604), a bent air pipe (6010) is arranged at the right end of the electromagnetic valve (603) through pipeline communication, the bent air pipe (6010) is positioned in a washing box (4), an air hole is formed in the outer wall of the bent air pipe (6010), the rotating shaft (605) penetrates through the top of the spray box (3) through a bearing, a rotary joint (606) is fixedly arranged at the bottom of the rotating joint (606), a hollow pipe (607) is fixedly arranged at the bottom of the rotating joint (606), and a nozzle (608) is arranged at the outer wall of the hollow pipe (607) through communication;
the inside fixed mounting of dust removal case (601) has clearance mechanism (7), the outer wall fixed mounting of heat transfer case (602) has pretreatment mechanism (5), the inside of spray box (3) is provided with buffer gear (8).
2. The boiler dust removal desulfurization and denitrification device according to claim 1, wherein: pretreatment mechanism (5) are including heat exchange sleeve (501), heater (508), the inner wall of heat exchange sleeve (501) and the outer wall fixed connection of blast pipe (15), the inner wall intercommunication of heat exchange sleeve (501) is provided with inlet tube (504), the bottom intercommunication of inlet tube (504) is provided with circulating water pump (502), the inlet end of circulating water pump (502) is provided with water tank (503) through the pipeline intercommunication, the inner wall of water tank (503) is provided with through the pipeline intercommunication and buckles water pipe (506), it is located heat exchange box (602) to buckle water pipe (506), the one end port intercommunication of keeping away from water tank (503) of buckling water pipe (506) is provided with outlet pipe (505), the top of outlet pipe (505) and the inner wall intercommunication of heat exchange sleeve (501), the outer wall of heater (508) and the back fixed connection of heat exchange box (602), the heating end fixed mounting of heater (508) has hot plate (507), hot plate (507) are located heat exchange box (602).
3. The boiler dust removal desulfurization and denitrification device according to claim 1, wherein: buffer gear (8) include buffer tank (801), slip ring (805), U type pipe (807), the top fixed connection at the bottom of buffer tank (801) and heat transfer case (602), and the inside of buffer tank (801) communicates with the inside of heat transfer case (602), the inner wall slip of buffer tank (801) is provided with piston (804) No. one, the top fixed mounting of piston (804) has gag lever post (802), the top fixed mounting of gag lever post (802) activity run through buffer tank (801), the top fixed mounting of piston (804) No. one has spring (803), the top of spring (803) and the inner wall fixed connection at buffer tank (801) top, slip ring (805) slip cap is established on hollow tube (607), the outer wall fixed mounting of slip ring (805) has piston (806) No. two, the edge outer wall of piston (806) and the inner wall laminating of spray tank (3), two upper and lower ports of U type pipe (807) all stretch into spray tank (3) inner wall fixed connection of U type pipe (807).
4. The boiler dust removal desulfurization and denitrification device according to claim 1, wherein: the cleaning mechanism (7) comprises a dust collection box (701), a cleaning brush (704) and a separation plate (706), wherein the separation plate (706) is fixedly installed in a dust removal box (601), the top of the separation plate (706) is fixedly connected with the bottom of a dust screen group (609), the dust collection box (701) is clamped in the dust removal box (601), the dust collection box (701) is located below the separation plate (706), the dust collection box (701) is fixedly connected with the outer wall of the dust removal box (601) through a fixing screw (702), a baffle (703) is fixedly installed on the inner wall of the dust collection box (701), an ash leakage groove (707) is formed in the top of the separation plate (706), the ash leakage groove (707) is located right above the baffle (703), a pull rod (705) is fixedly installed at the top of the cleaning brush (704), and the pull rod (705) movably penetrates through the top of the dust removal box (601).
5. The boiler dust removal desulfurization and denitrification device according to claim 1, wherein: the inner wall intercommunication of rotary joint (606) is provided with water conservancy diversion pipeline (13), the bottom intercommunication of water conservancy diversion pipeline (13) is provided with drawing liquid pump (12), the feed liquor end of drawing liquid pump (12) is provided with purifying liquid through the pipeline intercommunication and deposits case (11).
6. The boiler dust removal desulfurization and denitrification device according to claim 1, wherein: the top fixed mounting of pivot (605) has motor (2), the outer wall fixed mounting of motor (2) has fixed plate (1), the bottom of fixed plate (1) is connected with the top fixed of spray box (3), the outer wall fixed mounting of hollow tube (607) has stirring vane (14).
7. The boiler dust removal desulfurization and denitrification device according to claim 1, wherein: the front communication of washing case (4) is provided with feed liquor pipe (9), the front communication of washing case (4) is provided with drain pipe (10), the inner wall of feed liquor pipe (9) and drain pipe (10) all is provided with the manual valve.
8. The boiler dust removal desulfurization and denitrification device according to claim 2, wherein: the heat insulation cotton is fixedly arranged outside the water inlet pipe (504) and the water outlet pipe (505), a gap is reserved between the bent water pipe (506) and the heating plate (507), and the heating plates (507) are arranged in two and are vertically symmetrically distributed in the heat exchange box (602).
9. A boiler dust removal desulfurization and denitrification device according to claim 3, wherein: the top of the buffer box (801) is provided with vent holes, the later four U-shaped pipes (807) are arranged, and the circumferential arrays are distributed on the spray box (3).
10. The device for dedusting, desulfurizing and denitrating a boiler according to claim 4, wherein: the top of pull rod (705) fixed mounting has the arm-tie, the outer wall of cleaning brush (704) is laminated with the outer wall of dust screen group (609).
CN202310459532.0A 2023-04-26 2023-04-26 Boiler dust removal desulfurization denitrification facility Pending CN116474539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310459532.0A CN116474539A (en) 2023-04-26 2023-04-26 Boiler dust removal desulfurization denitrification facility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310459532.0A CN116474539A (en) 2023-04-26 2023-04-26 Boiler dust removal desulfurization denitrification facility

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CN116474539A true CN116474539A (en) 2023-07-25

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117959851A (en) * 2024-03-01 2024-05-03 山东正赢电力工程有限公司 Green's flue gas processing system
CN118320603A (en) * 2024-06-12 2024-07-12 河北津合科技有限公司 Cooling type efficient flue gas desulfurization dust remover

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117959851A (en) * 2024-03-01 2024-05-03 山东正赢电力工程有限公司 Green's flue gas processing system
CN118320603A (en) * 2024-06-12 2024-07-12 河北津合科技有限公司 Cooling type efficient flue gas desulfurization dust remover

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