CN111457412A - Boiler flue gas processing apparatus - Google Patents
Boiler flue gas processing apparatus Download PDFInfo
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- CN111457412A CN111457412A CN202010345213.3A CN202010345213A CN111457412A CN 111457412 A CN111457412 A CN 111457412A CN 202010345213 A CN202010345213 A CN 202010345213A CN 111457412 A CN111457412 A CN 111457412A
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- Prior art keywords
- flue gas
- pipe
- dispersion
- pipeline
- box
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- 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
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- 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
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- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
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- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Geometry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a boiler flue gas treatment device which comprises a heat recovery device, a filter box and a dust removal box, wherein the gas inlet end of the heat recovery device is connected with a smoke exhaust pipe of a boiler through a pipeline, the gas outlet end of the heat recovery device is connected with a smoke inlet mechanism through a pipeline, the smoke inlet mechanism is connected with the upper end of the dust removal box, the lower end of the dust removal box is integrally provided with an ash collecting hopper, the lower port of the ash collecting hopper is provided with a first electric valve, and the lower port of the first electric valve is fixedly covered with a dust collecting bag. The heat recovery device through setting up has realized the effective recovery to the waste heat in the flue gas, has better heat recovery effect, breaks up the dispersion with the flue gas through the dispersion mechanism that sets up and disperses the reaction rate of sulfur dioxide and lime wash in the great improvement flue gas of clarified lime wash, strengthens flue gas desulfurization's effect, and the setting tank realizes the collection and the convenient to detach clearance to the dust of sediment.
Description
Technical Field
The invention relates to the technical field of flue gas dust removal, in particular to a boiler flue gas treatment device.
Background
The fuel used in the combustion of the existing boiler mostly takes coal or pulverized coal as the main fuel, and a lot of smoke is generated during the combustion of the coal or the pulverized coal, and a large amount of dust and harmful gas exist in the smoke, the air pollution can be seriously caused by the large amount of dust and harmful gas in the smoke, and the environment can be seriously damaged by sulfur dioxide in the smoke.
The flue gas processing apparatus of current boiler is lower to the treatment effeciency of the dust in the flue gas to the recovery effect to the waste heat in the flue gas is not good, and drenches the sediment clearance of the dust of spouting the processing inconvenient to the dust, and the realization that simultaneously can not be fine is to the processing of the sulfur dioxide in the flue gas.
Disclosure of Invention
The invention aims to provide a boiler flue gas treatment device, and aims to solve the problems that the existing boiler flue gas treatment device is low in dust treatment efficiency, poor in flue gas waste heat recovery effect, inconvenient in dust precipitation cleaning and poor in sulfur dioxide treatment effect.
The invention is realized by the following steps:
a boiler flue gas treatment device comprises a heat recovery device, a filter box and a dust removal box, wherein the air inlet end of the heat recovery device is connected with a smoke exhaust pipe of a boiler through a pipeline, the air outlet end of the heat recovery device is connected with a smoke inlet mechanism through a pipeline, the smoke inlet mechanism is connected with the upper end of the dust removal box, the lower end of the dust removal box is integrally provided with an ash collecting hopper, the lower port of the ash collecting hopper is provided with a first electric valve, the lower port of the first electric valve is fixedly covered with a dust collecting bag, the lower end of the filter box is integrally provided with a precipitation hopper, the lower port of the precipitation hopper is provided with a second electric valve, the lower port of the second electric valve is provided with a connecting mechanism, the lower end of the connecting mechanism is provided with a precipitation box, the inner side of the dust removal box is horizontally provided with a grid plate at the upper port of the ash collecting hopper, the grid plate is selected from dense grid plates, and the inner side, a stainless steel sintering screen plate is horizontally arranged above the dispersing mechanism, a filter plate is arranged above the stainless steel sintering screen plate, a filter layer of the filter plate is made of non-woven fabrics, clarified lime water is arranged on the inner side of the precipitation hopper, the precipitation hopper is connected with a water pump through a pipeline, one end of the pipeline connected with the water outlet end of the water pump penetrates through the top end of the filter box from top to bottom and is fixedly provided with a shower nozzle with the filter plate, an exhaust pipe is arranged on the right side of the filter box close to the upper end, the effective recovery of waste heat in the flue gas is realized through a heat recovery device, the heat recovery effect is better, a grid plate arranged in the dust removal box blocks and reduces the speed of the flue gas conveyed by the flue gas inlet mechanism and absorbs partial dust in the flue gas, and the dust treatment efficiency is greatly improved through better gravity dust removal when the decelerated flue gas rises, the dispersion mechanism through setting up breaks up the dispersion with the flue gas and sulfur dioxide and lime wash's reaction rate in the great improvement flue gas of clear lime wash, strengthens flue gas desulfurization's effect, realizes the collection and convenient to detach clearance to the dust that deposits through the setting tank.
Further, it is including advancing the tobacco pipe to advance cigarette mechanism, advance the vertical setting of tobacco pipe at the inboard center of dust removal case, and the lower extreme that advances the tobacco pipe presses close to the grating board setting, the top that advances the upper end of tobacco pipe and pass the dust removal case is passed through the pipeline and is connected with heat recovery unit, the lower extreme that advances the tobacco pipe is provided with first dispersion impeller, advances the tobacco pipe and spouts the area of contact of improvement with the grating board with the flue gas dispersion through first dispersion impeller with the flue gas, and the grating board is realized absorbing the gravity dust removal that fine deceleration action was favorable to the flue gas air supporting to the flue gas simultaneously through intensive latticed hole.
Further, the lower extreme of advancing the tobacco pipe is provided with the external screw thread, and advances the tobacco pipe and pass through external screw thread and first dispersion dish up end center fixed connection, first dispersion dish inboard is the cavity setting, and the lower terminal surface of first dispersion dish exhaust hole of evenly having arranged, advances the tobacco pipe and is connected convenient to detach and erection joint through external screw thread and first dispersion dish, and first dispersion dish realizes discharging the dispersion of the flue gas of advancing the tobacco pipe through the exhaust hole of evenly having arranged.
Further, there is the fan one side that the up end of dust removal case is located into cigarette mechanism through the pipe connection, and the end of giving vent to anger of fan is connected through pipeline and sediment fill, the one end setting of the pipeline that the end of giving vent to anger of fan is at the inboard center that deposits the fill, and the end fixing of pipeline is provided with the second dispersion dish, the second dispersion dish sets up in the below of dispersion mechanism, and the second dispersion dish presses close to the dispersion mechanism setting, the second dispersion dish inboard is hollow setting, and the up end of second dispersion dish evenly arranges the exhaust hole, and the fan carries the flue gas in the dust removal case to deposit and fights the interior exhaust hole dispersion of passing through on the second dispersion dish and discharge to better homodisperse improves the reaction rate of sulfur dioxide and lime water under the effect of scattering mechanism in the lime water of clarification, reinforcing flue gas.
Further, dispersion mechanism includes dive motor, bracing piece and fan blade, the bracing piece is the cross setting, and four extreme points of bracing piece take the inboard edge of fighting precipitating, dive motor is fixed to be set up in the bracing piece upper end, and dive motor's output shaft passes the fixed fan leaf that is provided with of bracing piece downwards, broken tooth has evenly been arranged to the lower surface of fan leaf, realizes fixing dive motor's unsettled in fighting precipitating through the bracing piece card, and dive motor drive fan leaf rotates and stirs lime wash, and the fan leaf disperses into tiny bubble and fast dispersion to lime wash through the quick smashing of the broken tooth that sets up second dispersion dish exhaust flue gas simultaneously, makes flue gas and lime wash more abundant contact, improves the desulfurization efficiency of flue gas.
Further, the heat recovery device comprises a water inlet pipe, a box body and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are respectively arranged at two ends of the box body, a plurality of radiating fins which are uniformly arranged are arranged on the inner side of the box body, the radiating fins are vertically arranged, the upper end and the lower end of each radiating fin are respectively connected with the top and the bottom of the inner side of the box body, the box body is provided with a radiating pipe, the bent and bent radiating pipe penetrates through the plurality of radiating fins, the air inlet end of each radiating pipe penetrates through the side wall of the box body and is connected with the smoke outlet of the boiler through a pipeline, the air outlet end of each radiating pipe is connected with the smoke inlet pipe of the smoke inlet mechanism through a pipeline, the water inlet cavity and the water outlet cavity are respectively arranged at two ends, which are positioned on the inner side of the radiating fins, the water inlet cavity is communicated, the water that the inlet tube got into the water intracavity flows through a plurality of water courses dispersion and flows at last to flow to go out the water cavity and discharge through the outlet pipe, and great improvement fin and the area of contact of water have improved the box body water-logging to thermal absorption efficiency, have better waste heat recovery effect.
Further, coupling mechanism includes connecting pipe and clamp plate, the upper end of connecting pipe is passed through the flange and is connected with second electric valve, and the lower extreme of connecting pipe passes the clamp plate setting, clamp plate and connecting pipe pass through welded connection, and the both ends of clamp plate all are provided with the chamfer face, the lower extreme of connecting pipe is inserted in the up end of setting tank, and the clamp plate hugs closely with the up end of setting tank, and coupling mechanism passes the tip of clamp plate through the connecting pipe and realizes the location with the setting tank and be connected to carry out the closing cap through the clamp plate and seal the setting tank up end.
Furthermore, the upper end surface of the settling tank is provided with a jack matched with the connecting pipe, the inner diameter of the jack is slightly larger than the outer diameter of the connecting pipe, the edges of two sides of the upper end surface of the settling tank are provided with vertical baffles, butterfly screws are screwed on the opposite surfaces of the baffles on the two sides, one end of each butterfly screw is provided with a ball head, one end of each ball head penetrates through the baffle and abuts against the chamfered surface of the corresponding pressing plate, the pressing plate is clamped in the middle through the baffles arranged on the settling tank, the ball heads at the end portions of the butterfly screws abut against the chamfered surfaces of the pressing plates through locking of the butterfly screws, the settling tank is fixedly mounted with the pressing plates, the settling tank can be dismounted by loosening the butterfly screws, and the mounting and dismounting are convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a front view of a boiler flue gas treatment device of the present invention;
FIG. 2 is a cross-sectional view of a boiler flue gas treatment device shown in FIG. 1;
FIG. 3 is an enlarged view of a first dispersion tray of the boiler flue gas treatment device shown in FIG. 2;
FIG. 4 is a schematic view of a dispersion mechanism of the boiler flue gas treatment device shown in FIG. 2;
FIG. 5 is a schematic view of a fan blade of the boiler flue gas treatment device shown in FIG. 4;
FIG. 6 is a schematic view of a heat recovery unit of the boiler flue gas treatment unit shown in FIG. 1;
FIG. 7 is a top cross-sectional view of a heat recovery device of the boiler flue gas treatment device shown in FIG. 6;
FIG. 8 is a schematic view of the connection structure and the settling tank of the boiler flue gas treatment device shown in FIG. 1;
FIG. 9 is a schematic view of the connection mechanism of a boiler flue gas treatment device shown in FIG. 8;
FIG. 10 is a schematic view of a settling tank of the boiler flue gas treatment device shown in FIG. 8.
In the figure: 1. a heat recovery device; 101. a water inlet pipe; 102. a box body; 103. a water outlet pipe; 104. a radiating pipe; 105. a heat sink; 106. a water inlet cavity; 107. a water outlet cavity; 2. a smoke inlet mechanism; 201. a smoke inlet pipe; 202. a first heat dissipation plate; 3. a fan; 4. a filter box; 5. a water pump; 6. an exhaust pipe; 7. a dust removal box; 8. a dust collecting hopper; 9. a first electrically operated valve; 10. a dust collection bag; 11. a settling hopper; 12. a second electrically operated valve; 13. a connecting mechanism; 131. a connecting pipe; 132. pressing a plate; 1321. chamfering; 14. a settling tank; 141. a jack; 142. a baffle plate; 143. a butterfly screw; 15. a grid plate; 16. spraying a spray head; 17. a filter plate; 18. sintering the stainless steel screen plate; 19. a dispersing mechanism; 191. a submersible motor; 192. a support bar; 193. a fan blade; 1931. crushing teeth; 20. a second dispersion tray.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1, referring to fig. 1 and 2 in detail, the system comprises a heat recovery device 1, a filter box 4 and a dust removal box 7, wherein an air inlet end of the heat recovery device 1 is connected with a smoke exhaust pipe of a boiler through a pipeline to collect boiler smoke and recycle heat in the smoke, an air outlet end of the heat recovery device 1 is connected with a smoke inlet mechanism 2 through a pipeline, the heat recovery device 1 sends the smoke after heat recovery to the smoke inlet mechanism 2, the smoke inlet mechanism 2 is connected with an upper end of the dust removal box 7, a dust collection hopper 8 is integrally arranged at a lower end of the dust removal box 7, the dust collection hopper 8 collects precipitated dust, a first electric valve 9 is arranged at a lower port of the dust collection hopper 8, a dust collection bag 10 is fixedly covered at a lower port of the first electric valve 9, the dust in the dust collection hopper 8 can be discharged into the dust collection bag 10 by controlling the first electric valve 9 to be opened, a precipitation hopper 11 is integrally arranged at a lower end of the filter box 4, the sedimentation bucket 11 realizes the collection of the precipitated dust after the spraying treatment of the dust, the lower port of the sedimentation bucket 11 is provided with a second electric valve 12, the lower port of the second electric valve 12 is provided with a connecting mechanism 13, the lower end of the connecting mechanism 13 is provided with a sedimentation box 14, the second electric valve 12 is fixedly connected with the sedimentation box 14 through the connecting mechanism 13, and the sediment is discharged into the sedimentation box 14 to be collected by opening the second electric valve 12, the upper port of the dust collection bucket 8 at the inner side of the dust removal box 7 is horizontally provided with a grid plate 15, the grid plate 15 is selected from dense grid plates, the dense grid holes on the grid plate 15 realize the absorption of the dust in the smoke and play a role of reducing the speed to be favorable for the dead weight sinking of the dust in the smoke, the inner side of the sedimentation bucket 11 is provided with a dispersion mechanism 19 for scattering the smoke entering the sedimentation bucket 11, and a stainless steel sintering screen plate 18 is horizontally arranged above the dispersion mechanism 19, the stainless steel sintering screen plate 18 has better dust adsorption capacity under the action of spraying and sprinkling, the adsorbed dust can flow downwards along with water flow to realize the dust filtration, a filter plate 17 is arranged above the stainless steel sintering screen plate 18, a filter layer of the filter plate 17 is made of non-woven fabrics, the filter plate 17 is used for further filtering the residual dust in the smoke, one side of the upper end surface of the dust removal box 7, which is positioned at the smoke inlet mechanism 2, is connected with a fan 3 through a pipeline, the air outlet end of the fan 3 is connected with the sedimentation hopper 11 through a pipeline, one end of the pipeline connected with the air outlet end of the fan 3 is arranged at the inner center of the sedimentation hopper 11, the end part of the pipeline is fixedly provided with a second dispersion plate 20, the second dispersion plate 20 is arranged below the dispersion mechanism 19, the second dispersion plate 20 is arranged close to the dispersion mechanism 19, the inner side of the second dispersion plate 20 is arranged in a hollow way, and the upper end surface of the second dispersion plate 20 is, the fan 3 conveys the flue gas in the dust removal box 7 into the precipitation hopper 11 and discharges the flue gas through the exhaust holes on the second dispersion disc 20 in a dispersed manner, the flue gas is better and uniformly dispersed in clarified lime water under the action of the dispersion mechanism 19, the reaction speed of sulfur dioxide and the lime water is improved, the desulfurization effect of the flue gas is enhanced, the inner side of the precipitation hopper 11 is provided with the clarified lime water, the precipitation hopper 11 is connected with a water pump 5 through a pipeline, one end of the pipeline connected with the water outlet end of the water pump 5 penetrates through the top end of the filter box 4 and the filter plate 17 from top to bottom, the water pump 5 sends the pumped lime water to the shower nozzle 16 to realize shower dust removal, the exhaust pipe 6 is arranged on the right side of the filter box 4 close to the upper end, the effective recovery of the waste heat in the flue gas is realized through the arranged heat recovery device 1, the better heat recovery effect is achieved, the grid plate 15 arranged in the dust removal box 7 blocks and decelerates the flue gas conveyed by the flue gas inlet mechanism 2 The dust absorbs, and the flue gas after the speed reduction realizes the great efficiency of improvement dust disposal of better gravity dust removal when ascending, breaks up the dispersion with the flue gas through the dispersion mechanism 19 that sets up and disperses the reaction rate of sulfur dioxide and lime wash in the great improvement flue gas of clarified lime wash, and the effect of reinforcing flue gas desulfurization is realized the collection and the convenient to detach clearance of the dust of sediment through setting tank 14.
Referring to fig. 2 and 3, the smoke inlet mechanism 2 includes a smoke inlet pipe 201, the smoke inlet pipe 201 is vertically disposed at the center of the inner side of the dust box 7, and the lower end of the smoke inlet pipe 201 is disposed close to the grid plate 15, on the one hand, the smoke outlet of the smoke inlet pipe 201 is close to the grid plate 15, so as to achieve the purpose of blocking and decelerating the smoke by the grid plate 15 and increasing the rising distance of the smoke in the dust box 7, so as to achieve a better gravity dust removing effect, the upper end of the smoke inlet pipe 201 passes through the top of the dust box 7 and is connected with the heat recovery device 1 through a pipe, the lower end of the smoke inlet pipe 201 is provided with a first dispersion plate 202, the lower end of the smoke inlet pipe 201 is provided with external threads, the smoke inlet pipe 201 is fixedly connected with the center of the upper end face of the first dispersion plate 202 through the external threads, the inner side of the first dispersion plate 202 is hollow, and the lower end face of the first dispersion plate 202 is uniformly distributed with exhaust holes, the smoke inlet pipe, the first dispersion disc 202 realizes the dispersion discharge of the flue gas entering the flue pipe 201 through the exhaust holes which are evenly distributed, the flue gas entering the flue pipe 201 improves the contact area of the flue gas dispersion discharge and the grid plate 15 through the first dispersion disc 202, and the grid plate 15 realizes the absorption of flue gas dust and simultaneously plays a good deceleration role in the flue gas flotation to the flue gas through the dense grid holes, so that the gravity dust removal is facilitated.
Referring to fig. 2, 4 and 5, the dispersing mechanism 19 includes a diving motor 191, a support rod 192 and fan blades 193, the support rod 192 is disposed in a cross shape, and four end points of the supporting rod 192 are lapped on the inner side edge of the settling hopper 11, the diving motor 191 is fixedly arranged at the upper end of the supporting rod 192, and the output shaft of the submersible motor 191 is downwards penetrated through the support rod 192 to be fixedly provided with a fan blade 193, the lower surface of the fan blade 193 is evenly distributed with crushing teeth 1931, the submersible motor 191 is suspended and fixed in the sedimentation bucket 11 through the support rod 192, the submersible motor 191 drives the fan blade 193 to rotate to stir the lime water, simultaneously fan blade 193 is through the broken tooth 1931 that sets up with the quick break dispersion of second dispersion dish 20 exhaust flue gas become tiny bubble and disperse fast to lime wash, make flue gas and more abundant contact of lime wash, improve the desulfurization efficiency of flue gas.
Referring to fig. 6 and 7, the heat recovery device 1 includes a water inlet pipe 101, a box body 102 and a water outlet pipe 103, the two ends of the box body 102 are respectively provided with the water inlet pipe 101 and the water outlet pipe 103, the water inlet pipe 101 introduces water into the box body 102, the water outlet pipe 103 sends absorbed water to the boiler, the inner side of the box body 102 is provided with a plurality of radiating fins 105 which are uniformly arranged, the radiating fins 105 radiate heat conducted by the radiating pipe 104 into the water, the radiating fins 105 are vertically arranged, the upper and lower ends of the radiating fins 105 are respectively connected with the top and the bottom of the inner side of the box body 102, two adjacent radiating fins 105 form a closed water flow channel, the box body 102 is provided with the radiating pipe 104, the radiating pipe 104 is bent and inserted through the plurality of radiating fins 105, the bent radiating pipe 104 prolongs the residence time of smoke in the pipe to increase the amount of heat radiated, the air inlet end of the radiating pipe 104 passes, and the air outlet end of the radiating pipe 104 is connected with the smoke inlet pipe 201 of the smoke inlet mechanism 2 through a pipeline, the inner side of the box body 102 is positioned at two ends of the radiating fins 105 and is respectively provided with a water inlet cavity 106 and a water outlet cavity 107, the water inlet cavity 106 is communicated with the water inlet pipe 101, the water outlet cavity 107 is communicated with the water outlet pipe 103, the radiating pipe 104 transmits heat in smoke to the radiating fins 105, two adjacent radiating fins 105 form a water channel for water to pass through, water entering the water inlet cavity 106 from the water inlet pipe 101 flows in a dispersed manner through the water channels and finally flows to the water outlet cavity 107 and is discharged through the water outlet pipe 103, the contact area between the radiating fins and the water is greatly increased, the absorption efficiency of the water in the box body 102 on the heat.
Referring to fig. 8, 9 and 10 in detail, the connection mechanism 13 includes a connection pipe 131 and a pressing plate 132, the upper end of the connection pipe 131 is connected to the second electric valve 12 through a flange, the lower end of the connection pipe 131 passes through the pressing plate 132, the pressing plate 132 and the connection pipe 131 are connected by welding, a sealing ring is sleeved on one end of the connection pipe 131 passing through the pressing plate 132 to achieve better sealing, chamfered surfaces 1321 are respectively disposed at two ends of the pressing plate 132, the lower end of the connection pipe 131 is inserted into the upper end surface of the settling tank 14, the pressing plate 132 is tightly attached to the upper end surface of the settling tank 14, the connection mechanism 13 achieves positioning connection with the settling tank 14 by passing one end of the connection pipe 131 through the pressing plate 132, the upper end surface of the settling tank 14 is sealed by a sealing cover, a jack 141 matched with the connection pipe 131 is disposed on the upper end surface of the settling tank 14 to facilitate positioning connection, and the, the vertical baffles 142 are arranged on the edges of two sides of the upper end face of the settling tank 14, the butterfly screws 143 are screwed on the opposite faces of the baffles 142 on the two sides, the ball heads are arranged at one ends of the butterfly screws 143, one ends of the ball heads penetrate through the baffles 142 and abut against the chamfered faces 1321 of the pressing plate 132, a glass observation window arranged on one side face of the settling tank 14 is convenient for observing the stacking height of the internal sediments, the pressing plate 132 is clamped in the middle through the baffles 142 arranged on the settling tank 14, the ball heads at the ends of the ball heads abut against the chamfered faces 1321 of the pressing plate 132 through locking the butterfly screws 143, the settling tank 14 and the pressing plate 132 are tightly attached to achieve fixed installation of the settling tank 14, the settling tank 14 can be detached by loosening the butterfly screws 143, and the installation and the detachment.
The flue gas enters a radiating pipe 104 in the heat recovery device 1, the heat in the flue gas is discharged through a radiating fin 105, a water inlet pipe 101 introduces water into a water inlet cavity 106 in a box body 102, the water flows dispersedly through a water channel formed by the radiating fin 105, the heat dissipated by the radiating fin 105 is absorbed and then flows to a water outlet cavity 107, the heat is discharged to a boiler through a water outlet pipe 103, good flue gas waste heat recovery and utilization are realized, the flue gas is discharged from the radiating pipe 104 and enters a dust removing box 7 through a smoke inlet pipe 201 of a smoke inlet mechanism 2, the flue gas is sprayed out through a first dispersion disc 202 and is blocked by a grid plate 15 to realize speed reduction, the flue gas flows downwards into an ash collecting hopper 8 through the grid plate 15 and returns upwards, the grid plate 15 blocks part of dust, the dust in the rising flue gas sinks under the self weight, a fan 3 pumps the flue gas in the dust removing box 7 and sends the flue gas into a settling hopper 11, and the flue gas is dispersed in clear lime water sprayed out of the settling hopper 11 through a second dispersion, the fan blade 163 of the dispersing mechanism 19 stirs the lime water by rotating rapidly under the action of the submersible motor 191, meanwhile, the breaking teeth 1931 on the fan blade 193 break bubbles discharged from the second dispersing disc 20 and disperse the bubbles in the lime water, so that the smoke and the lime water are greatly improved and fully contacted, a better desulfurization effect is realized, dust precipitated in the lime water enters the settling tank 14 through the second electric valve 12 for settling and collection, when more precipitates are formed, the electric valve 12 is controlled to be closed, the butterfly screw 143 is loosened to realize the disassembly of the settling tank 14 for cleaning, the water pump 16 pumps the lime water in the settling tank 11 away and sprays the smoke through the spraying nozzle 16 to remove dust, the spraying nozzle 16 wets the stainless steel sintering mesh plate 18 to increase the adsorption capacity of the dust, and the filter plate 17 further filters the dust in the smoke to realize purification and finally discharges the dust through the exhaust pipe 6.
The device obtained by the design can basically meet the requirements of the existing flue gas treatment device of the boiler on the use of high-efficiency dust treatment, good flue gas waste heat recovery effect, convenient dust precipitation cleaning and good sulfur dioxide treatment effect, but the designer further improves the device based on the aim of further perfecting the function of the device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a boiler flue gas processing apparatus, includes heat reclamation device (1), rose box (4) and dust removal case (7), its characterized in that: the air inlet end of the heat recovery device (1) is connected with a smoke exhaust pipe of a boiler through a pipeline, the air outlet end of the heat recovery device (1) is connected with a smoke inlet mechanism (2) through a pipeline, the smoke inlet mechanism (2) is connected with the upper end of a dust removal box (7), the lower end of the dust removal box (7) is integrally provided with an ash collection hopper (8), the lower port of the ash collection hopper (8) is provided with a first electric valve (9), the lower port of the first electric valve (9) is fixedly covered with a dust collection bag (10), the lower end of the filter box (4) is integrally provided with a precipitation hopper (11), the lower port of the precipitation hopper (11) is provided with a second electric valve (12), the lower port of the second electric valve (12) is provided with a connecting mechanism (13), the lower end of the connecting mechanism (13) is provided with a precipitation box (14), the upper port of the dust removal box (7) which is positioned at the ash collection hopper (8) is horizontally provided with a grid plate (15), and grid plate (15) select for use intensive grid plate, it is provided with dispersion mechanism (19) to deposit fill (11) inboard, and the top level that is located dispersion mechanism (19) is provided with stainless steel sintering otter board (18), the top that is located stainless steel sintering otter board (18) is provided with filter (17), and the filter layer of filter (17) chooses for use the non-woven fabrics, the inboard that deposits fill (11) is provided with clarified lime wash, and deposits fill (11) and have water pump (5) through the pipe connection, the top that rose box (4) were passed to the one end top-down of the pipeline that the play water end of water pump (5) is connected and filter (17) are fixed to be provided with drenches shower nozzle (16), the right side of rose box (4) is close to the upper end position and is provided with.
2. The boiler flue gas treatment device according to claim 1, wherein the flue gas inlet mechanism (2) comprises a flue gas inlet pipe (201), the flue gas inlet pipe (201) is vertically arranged at the inner center of the dust removal box (7), the lower end of the flue gas inlet pipe (201) is arranged close to the grid plate (15), the upper end of the flue gas inlet pipe (201) penetrates through the top of the dust removal box (7) and is connected with the heat recovery device (1) through a pipeline, and the lower end of the flue gas inlet pipe (201) is provided with a first dispersion disc (202).
3. The boiler flue gas treatment device according to claim 2, wherein the lower end of the flue gas inlet pipe (201) is provided with an external thread, the flue gas inlet pipe (201) is fixedly connected with the center of the upper end surface of the first dispersion disc (202) through the external thread, the inner side of the first dispersion disc (202) is hollow, and the lower end surface of the first dispersion disc (202) is uniformly provided with exhaust holes.
4. The boiler flue gas treatment device according to claim 3, wherein the upper end face of the dust removal box (7) is located on one side of the smoke inlet mechanism (2) and is connected with the fan (3) through a pipeline, the air outlet end of the fan (3) is connected with the precipitation hopper (11) through a pipeline, one end of the pipeline connected with the air outlet end of the fan (3) is arranged at the center of the inner side of the precipitation hopper (11), the end part of the pipeline is fixedly provided with the second dispersion disc (20), the second dispersion disc (20) is arranged below the dispersion mechanism (19), the second dispersion disc (20) is arranged close to the dispersion mechanism (19), the inner side of the second dispersion disc (20) is arranged in a hollow mode, and the upper end faces of the second dispersion disc (20) are uniformly provided with exhaust holes.
5. The boiler flue gas treatment device according to claim 4, wherein the dispersion mechanism (19) comprises a submersible motor (191), a support rod (192) and fan blades (193), the support rod (192) is in a cross shape, four end points of the support rod (192) are arranged on the inner edge of the sedimentation bucket (11), the submersible motor (191) is fixedly arranged at the upper end of the support rod (192), the output shaft of the submersible motor (191) downwards penetrates through the support rod (192) to be fixedly provided with fan blades (193), and broken teeth (1931) are uniformly distributed on the lower surface of the fan blades (193).
6. The boiler flue gas treatment device according to claim 5, wherein the heat recovery device (1) comprises a water inlet pipe (101), a box body (102) and a water outlet pipe (103), the two ends of the box body (102) are respectively provided with the water inlet pipe (101) and the water outlet pipe (103), the inner side of the box body (102) is provided with a plurality of uniformly arranged radiating fins (105), the radiating fins (105) are vertically arranged, the upper and lower ends of the radiating fins (105) are respectively connected with the top and the bottom of the inner side of the box body (102), the box body (102) is provided with a radiating pipe (104), the radiating pipe (104) is bent and inserted through the plurality of radiating fins (105), the air inlet end of the radiating pipe (104) passes through the side wall of the box body (102) and is connected with the smoke outlet of the boiler through a pipeline, and the air outlet end of the radiating pipe (104) is connected with the smoke inlet pipe (201) of the, the inner side of the box body (102) is provided with a water inlet cavity (106) and a water outlet cavity (107) at two ends of the radiating fin (105), the water inlet cavity (106) is communicated with the water inlet pipe (101), and the water outlet cavity (107) is communicated with the water outlet pipe (103).
7. The boiler flue gas treatment device according to claim 6, wherein the connecting mechanism (13) comprises a connecting pipe (131) and a pressing plate (132), the upper end of the connecting pipe (131) is connected with the second electric valve (12) through a flange, the lower end of the connecting pipe (131) penetrates through the pressing plate (132) to be arranged, the pressing plate (132) and the connecting pipe (131) are connected through welding, chamfered surfaces (1321) are arranged at two ends of the pressing plate (132), the lower end of the connecting pipe (131) is inserted in the upper end surface of the settling tank (14), and the pressing plate (132) is tightly attached to the upper end surface of the settling tank (14).
8. The boiler flue gas treatment device according to claim 7, wherein the upper end surface of the settling tank (14) is provided with a jack (141) matched with the connecting pipe (131), the inner diameter of the jack (141) is slightly larger than the outer diameter of the connecting pipe (131), two side edges of the upper end surface of the settling tank (14) are provided with vertical baffles (142), the baffles (142) on two sides are screwed with butterfly screws (143) on opposite surfaces, one end of each butterfly screw (143) is provided with a ball head, and one end of each ball head penetrates through the baffle (142) and abuts against the chamfered surface (1321) of the pressing plate (132).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345213.3A CN111457412A (en) | 2020-04-27 | 2020-04-27 | Boiler flue gas processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345213.3A CN111457412A (en) | 2020-04-27 | 2020-04-27 | Boiler flue gas processing apparatus |
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| CN111457412A true CN111457412A (en) | 2020-07-28 |
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| CN202010345213.3A Pending CN111457412A (en) | 2020-04-27 | 2020-04-27 | Boiler flue gas processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648677A (en) * | 2020-09-21 | 2021-04-13 | 李倩雯 | Domestic novel energy-concerving and environment-protective heating stove |
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Application publication date: 20200728 |
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