CN113551246A - Flue anti-corrosion device for calcium-based wet desulphurization - Google Patents
Flue anti-corrosion device for calcium-based wet desulphurization Download PDFInfo
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- CN113551246A CN113551246A CN202110713342.8A CN202110713342A CN113551246A CN 113551246 A CN113551246 A CN 113551246A CN 202110713342 A CN202110713342 A CN 202110713342A CN 113551246 A CN113551246 A CN 113551246A
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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
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
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- 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
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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
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1412—Controlling the absorption process
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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
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- F23J13/00—Fittings for chimneys or flues
- F23J13/08—Doors or covers specially adapted for smoke-boxes, flues, or chimneys
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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
- 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
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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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
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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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
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a flue anti-corrosion device for calcium-based wet desulphurization, which comprises a spray tower, a flue gas channel and a spray liquid inlet pipe, wherein the lower end of the spray tower is communicated with the flue gas channel; the invention improves the existing calcium-based wet desulphurization equipment, and the improved calcium-based wet desulphurization equipment can avoid the accumulation of solids at the inlet flue of the absorption tower in the use process, simultaneously prevent absorption liquid from flowing down in a waterfall shape, effectively reduce the resistance to flue gas, and reduce the energy consumption of a desulphurization fan, thereby leading the equipment to save more resources.
Description
Technical Field
The invention relates to the technical field of wet desulphurization, in particular to a flue anti-corrosion device for calcium-based wet desulphurization.
Background
At present, the wet flue gas desulfurization process is mainly adopted in the industries of thermoelectricity, steel, metallurgy, cement and the like in China to remove sulfur dioxide in flue gas. The desulfurization tower is the most critical core equipment in a wet flue gas desulfurization process system, and can be divided into a spray tower, a bubble tower, a liquid column tower and the like according to different technical characteristics, wherein the spray tower is a mainstream tower type of the wet flue gas desulfurization process and is generally arranged in a mode of countercurrent contact of flue gas and slurry. After the spray layer nozzles close to the tower wall spray the absorption liquid to the inner wall of the desulfurization spray tower, the absorption liquid flows downwards along the tower wall. When the absorption liquid flows to the smoke inlet, the absorption liquid flows down in a waterfall shape. The waterfall-shaped absorption liquid can block the flue gas entering the spray tower and increase the resistance of the flue gas, thereby increasing the energy consumption of the desulfurization fan, easily causing the accumulation of solid matters in the inlet flue of the absorption tower, corroding the flue and the tower body, and increasing the operation energy consumption and the maintenance cost. In order to solve the problems, the invention provides a flue corrosion prevention device for calcium-based wet desulphurization.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects of the prior art, adapt to the practical needs and provide a flue anti-corrosion device for calcium-based wet desulphurization so as to solve the technical problems.
(2) Technical scheme
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
the utility model provides a flue corrosion prevention device for calcium-based wet flue gas desulfurization, includes that spray column, flue gas passageway and spray liquid enter the pipe, the lower extreme intercommunication of spray column is provided with flue gas passageway, spray liquid enters the pipe intercommunication and pegs graft on spray column's lateral wall, be provided with clearance mechanism in the spray column.
Further, the cleaning mechanism comprises a vertical cleaning scraper and an arc cleaning scraper, the vertical cleaning scraper is slidably arranged with the inner side wall of the flue gas channel, the vertical cleaning scraper is fixedly arranged on the lower end face of the arc cleaning scraper, the arc cleaning scraper is slidably arranged with the inclined inner side wall of the lower edge of the spray tower, the upper end face of the arc cleaning scraper is fixedly connected with an inclined connecting rod, the free end of the inclined connecting rod is fixedly connected with a fixed disc, the fixed disc is fixedly sleeved outside the inner spiral pipe, the inner spiral pipe is movably sleeved with a movable support ring, the outer side wall of the movable support ring is fixedly connected with a plurality of horizontal connecting rods, the free end of each horizontal connecting rod is fixedly connected with the inner side wall of the horn-shaped smoke outlet pipe, the horn-shaped smoke outlet pipe is fixedly inserted on a fixed sealing plate, and the fixed sealing plate is fixedly connected in the spray tower, the upper end of the trumpet-shaped smoke outlet pipe is connected with a fixed plugging cylinder, a plurality of smoke outlet through holes are formed in the side wall of the fixed plugging cylinder, a movable sealing plate is movably arranged in the fixed plugging cylinder, a threaded rod is fixedly connected to the lower end face of the movable sealing plate and is inserted into the inner spiral pipe in a threaded manner, a reset supporting assembly is fixedly connected to the upper end face of the movable sealing plate, and the free end of the reset supporting assembly is fixedly connected to the inner top wall of the fixed plugging cylinder.
Further, the support assembly that resets includes the bracing piece that resets, a support section of thick bamboo and the supporting spring that resets, the bracing piece activity that resets is pegged graft in a support section of thick bamboo that resets, the supporting spring winding that resets is connected outside the bracing piece that resets, and the both ends of the supporting spring that resets fixed connection respectively on the lateral wall of the bracing piece that resets and the lateral wall of a support section of thick bamboo that resets.
Further, be provided with a plurality of shutoff mechanism in the fixed shutoff section of thick bamboo, the quantity of shutoff mechanism sets up with the quantity phase-match of going out the cigarette through-hole, shutoff mechanism includes arc shutoff board and vertical connecting rod, the inboard wall of arc shutoff board and fixed shutoff section of thick bamboo slides and sets up, and the vertical connecting rod of lower extreme fixedly connected with of arc shutoff board, the lower extreme fixed connection of vertical connecting rod is on the up end of removal closing plate.
Further, the flue gas passageway internal rotation is provided with the filter sieve, and the filter sieve is fixed to be set up on the lower extreme of vertical clearance scraper blade.
Furthermore, a rotating mechanism is arranged on the upper end face of the filter screen, and through the rotating mechanism, solids deposited on the filter screen can be removed, and meanwhile, the absorption liquid can be prevented from flowing down in a waterfall shape by cooperating with the filter screen.
Further, rotary mechanism includes fixed column and rotatory stay tube, the fixed column is fixed to be set up on the up end middle part of filter sieve, and the outer movable sleeve of fixed column is equipped with rotatory support ring, fixedly connected with rotatory cleaning plate on the lateral wall of rotatory support ring.
Further, the outer movable sleeve of rotatory clearance board is equipped with the support sliding ring, and the outer winding of rotatory clearance board is connected with reset spring, reset spring's both ends difference fixed connection is on the lateral wall of rotatory clearance board and the lateral wall that supports the sliding ring, fixedly connected with removes the slider on the interior roof of support sliding ring, and removes the slider and slide and set up in removing the spout, it sets up on rotatory clearance board to remove the spout, remove the lateral wall fixedly connected with drive spur rack of slider, and the activity of drive spur rack sets up in removing the spout, drive spur rack and a plurality of drive gear homogeneous phase meshing are connected, and the fixed cover of drive gear is established outside the dwang, the dwang rotates to set up on rotatory clearance board, and the lower extreme fixedly connected with clearance chassis of dwang.
Furthermore, one end of the rotary cleaning plate, which is far away from the rotary support ring, is fixedly connected with a bearing block.
Further, support fixedly connected with magnet ring on the sliding ring, and magnet ring movable sleeve establishes outside rotatory clearance board, it has the magnet piece with magnet ring assorted to inlay on the vertical clearance scraper blade.
(3) Has the advantages that:
the invention improves the existing calcium-based wet desulphurization equipment, and the improved calcium-based wet desulphurization equipment can avoid the accumulation of solids at the inlet flue of the absorption tower in the use process, simultaneously prevent absorption liquid from flowing down in a waterfall shape, effectively reduce the resistance to flue gas, and reduce the energy consumption of a desulphurization fan, thereby leading the equipment to save more resources.
According to the invention, the cleaning mechanism is additionally arranged, the rotation of the vertical cleaning scraper and the arc-shaped cleaning scraper can be realized under the pushing action of the flue gas, and the solids deposited on the inner walls of the spray tower and the flue gas channel can be effectively removed through the rotation of the vertical cleaning scraper and the arc-shaped cleaning scraper, so that the inner side walls of the spray tower and the flue gas channel can be effectively prevented from being corroded, and the service lives of the spray tower and the flue gas channel are prolonged.
The invention is additionally provided with a plugging mechanism which is used for opening and plugging the smoke outlet through hole, specifically, the smoke outlet through hole is opened by the plugging mechanism when smoke flows out, and the smoke outlet through hole is plugged by the plugging mechanism, so that suspended matters floating in the spray tower can be prevented from entering the fixed plugging cylinder and depositing on the movable sealing plate when no smoke is desulfurized, and the upward movement of the movable sealing plate is hindered.
The filter sieve is additionally arranged, the filter sieve can effectively prevent the absorption liquid from flowing down in a waterfall shape, so that the absorption liquid can better absorb sulfur in the flue gas, and the filter sieve can prevent the flue gas from being blocked, so that the effect of saving more energy is achieved.
The rotary mechanism is additionally arranged, and solids deposited on the filter screen can be removed through the rotation effect, so that the filter screen is ensured to have a good screening effect all the time, and the smoke is prevented from being blocked when moving upwards.
The invention has reasonable structural design, and the movement of the cleaning mechanism, the plugging mechanism, the filter sieve and the rotating mechanism does not need to be additionally provided with an external power source, thereby not only reducing the production investment, but also ensuring the high efficiency of the equipment.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a flue corrosion prevention device for calcium-based wet desulphurization;
FIG. 2 is an enlarged schematic view of the section C-C in FIG. 1 of the flue corrosion prevention device for calcium-based wet desulfurization according to the present invention;
FIG. 3 is a schematic view of a part of an enlarged structure of a flue corrosion prevention device for calcium-based wet desulphurization in FIG. 1;
FIG. 4 is an enlarged schematic view of the structure A in FIG. 3 of the flue corrosion prevention device for calcium-based wet desulphurization according to the present invention;
FIG. 5 is a partial perspective enlarged partial schematic view of the flue gas channel in FIG. 1 of the flue corrosion prevention apparatus for calcium-based wet desulfurization of the present invention;
FIG. 6 is a schematic view of a part of an enlarged structure of a flue corrosion prevention device for calcium-based wet desulphurization in FIG. 5;
FIG. 7 is an enlarged schematic view of the structure B in FIG. 6 of the flue corrosion prevention device for calcium-based wet desulphurization according to the present invention.
The reference numbers are as follows:
a spray tower 1, a flue gas channel 2, a spray liquid inlet pipe 3, a cleaning mechanism 4, a vertical cleaning scraper 41, an arc cleaning scraper 42, an inclined connecting rod 43, a fixed disc 44, an inner spiral pipe 45, a movable supporting ring 46, a horizontal connecting rod 47, a trumpet-shaped smoke outlet pipe 48, a fixed sealing plate 49, a threaded rod 410, a movable sealing plate 411, a fixed plugging cylinder 412, a reset supporting component 413, a reset supporting rod 4131, a reset supporting cylinder 4132 and a reset supporting spring 4133, the device comprises a smoke outlet through hole 414, a blocking mechanism 5, an arc-shaped blocking plate 51, a vertical connecting rod 52, a filter screen 6, a rotating mechanism 7, a fixed column 71, a rotating support ring 72, a rotating cleaning plate 73, a support sliding ring 74, a return spring 75, a moving slide block 76, a moving slide groove 77, a driving spur rack 78, a driving gear 79, a rotating rod 710, a cleaning chassis 711, a bearing block 712, a magnet ring 713 and a magnet block 714.
Detailed Description
The invention will be further illustrated with reference to the following figures 1 to 7 and examples:
a flue anticorrosion device for calcium-based wet desulphurization comprises a spray tower 1, a flue gas channel 2 and a spray liquid inlet pipe 3, wherein the lower end of the spray tower 1 is communicated with the flue gas channel 2, the spray liquid inlet pipe 3 is communicated and inserted on the side wall of the spray tower 1, and a cleaning mechanism 4 is arranged in the spray tower 1.
In this embodiment, the cleaning mechanism 4 includes a vertical cleaning scraper 41 and an arc cleaning scraper 42, the vertical cleaning scraper 41 is slidably disposed on the inner side wall of the flue gas channel 2, the vertical cleaning scraper 41 is fixedly disposed on the lower end surface of the arc cleaning scraper 42, the arc cleaning scraper 42 is slidably disposed on the inner side wall of the lower edge of the spray tower 1, the upper end surface of the arc cleaning scraper 42 is fixedly connected with an inclined connecting rod 43, the free end of the inclined connecting rod 43 is fixedly connected to a fixed disk 44, the fixed disk 44 is fixedly sleeved outside the inner spiral tube 45, the outer movable sleeve of the inner spiral tube 45 is sleeved with a movable support ring 46, the outer side wall of the movable support ring 46 is fixedly connected with a plurality of horizontal connecting rods 47, the free end of the horizontal connecting rod 47 is fixedly connected to the inner side wall of the trumpet-shaped flue pipe 48, and the trumpet-shaped flue pipe 48 is fixedly inserted on the fixed sealing plate 49, the fixed sealing plate 49 is fixedly connected in the spray tower 1, the upper end of the trumpet-shaped smoke outlet pipe 48 is connected with a fixed plugging cylinder 412, the side wall of the fixed plugging cylinder 412 is provided with a plurality of smoke outlet through holes 414, the fixed plugging cylinder 412 is movably provided with a movable sealing plate 411, the lower end surface of the movable sealing plate 411 is fixedly connected with a threaded rod 410, the threaded rod 410 is in threaded insertion connection in an inner spiral pipe 45, the upper end surface of the movable sealing plate 411 is fixedly connected with a reset supporting component 413, and the free end of the reset supporting component 413 is fixedly connected on the inner top wall of the fixed plugging cylinder 412, the invention is additionally provided with the cleaning mechanism 4, the cleaning mechanism 4 is arranged, the rotation of the vertical cleaning scraper 41 and the arc cleaning scraper 42 can be realized through the pushing action of smoke, and solids deposited on the inner walls of the spray tower 1 and the smoke channel 2 can be effectively removed through the rotation of the vertical cleaning scraper 41 and the arc cleaning scraper 42, thereby can prevent effectively that spray column 1 and flue gas passageway 2 inside wall from being corroded, extension spray column 1 and flue gas passageway 2's life.
In this embodiment, the reset supporting assembly 413 includes a reset supporting rod 4131, a reset supporting cylinder 4132 and a reset supporting spring 4133, the reset supporting rod 4131 is movably inserted into the reset supporting cylinder 4132, the reset supporting spring 4133 is wound and connected outside the reset supporting rod 4131, and two ends of the reset supporting spring 4133 are respectively and fixedly connected to the sidewall of the reset supporting rod 4131 and the outer sidewall of the reset supporting cylinder 4132, and the setting of the reset supporting assembly 413 not only can play a role of guiding and supporting for the movement of the movable sealing plate 411, but also can provide power for the downward movement of the movable sealing plate 411.
In this embodiment, a plurality of plugging mechanisms 5 are disposed in the fixed plugging cylinder 412, the number of the plugging mechanisms 5 is matched with the number of the smoke outlet through holes 414, each plugging mechanism 5 includes an arc-shaped plugging plate 51 and a vertical connecting rod 52, the arc-shaped plugging plate 51 is slidably disposed on the inner side wall of the fixed plugging cylinder 412, the lower end of the arc-shaped plugging plate 51 is fixedly connected with the vertical connecting rod 52, and the lower end of the vertical connecting rod 52 is fixedly connected to the upper end surface of the movable sealing plate 411, in the present invention, a plugging mechanism 5 is additionally disposed, and the plugging mechanism 5 is configured to open and plug the smoke outlet through holes 414, specifically, the plugging mechanism 5 opens the smoke outlet through holes 414 when smoke flows out, and the plugging mechanism 5 plugs the smoke outlet through holes 414, so as to prevent suspended matters floating in the spray tower 1 from entering the fixed plugging cylinder 412 when no smoke is desulfurized and depositing on the movable sealing plate 411, causing the upward movement of the moving sealing plate 411 to be hindered.
In the embodiment, the filter sieve 6 is rotatably arranged in the flue gas channel 2, and the filter sieve 6 is fixedly arranged at the lower end of the vertical cleaning scraper 41, the filter sieve 6 is additionally arranged in the flue gas channel, and the filter sieve 6 is arranged to effectively prevent absorption liquid from flowing down in a waterfall shape, so that the absorption liquid can better absorb sulfur in the flue gas, and the filter sieve 6 can prevent the flue gas from being blocked, so that a more energy-saving effect is achieved.
In this embodiment, the rotating mechanism 7 is disposed on the upper end surface of the filter screen 6, the rotating mechanism 7 is disposed to remove solids deposited on the filter screen 6 by rotation, and simultaneously, cooperate with the filter screen 6 to prevent the absorption liquid from flowing down in a waterfall shape, the rotating mechanism 7 includes a fixed column 71 and a rotating support tube 72, the fixed column 71 is fixedly disposed on the middle portion of the upper end surface of the filter screen 6, a rotating support ring 72 is movably sleeved outside the fixed column 71, a rotating cleaning plate 73 is fixedly connected to the outer side wall of the rotating support ring 72, a support sliding ring 74 is movably sleeved outside the rotating cleaning plate 73, a return spring 75 is further wound outside the rotating cleaning plate 73, two ends of the return spring 75 are respectively fixedly connected to the side wall of the rotating cleaning plate 73 and the side wall of the support sliding ring 74, a moving slider 76 is fixedly connected to the inner top wall of the support sliding ring 74, the movable sliding block 76 is arranged in the movable sliding groove 77 in a sliding manner, the movable sliding groove 77 is arranged on the rotary cleaning plate 73, the side wall of the movable sliding block 76 is fixedly connected with a driving spur rack 78, the driving spur rack 78 is movably arranged in the movable sliding groove 77, the driving spur rack 78 is meshed with a plurality of driving gears 79, the driving gears 79 are fixedly sleeved outside the rotary rod 710, the rotary rod 710 is rotatably arranged on the rotary cleaning plate 73, the lower end of the rotary rod 710 is fixedly connected with a cleaning chassis 711, one end of the rotary cleaning plate 73 far away from the rotary support ring 72 is fixedly connected with a bearing block 712, a magnet ring 713 is fixedly connected on the support sliding ring 74, the magnet ring 713 is movably sleeved outside the rotary cleaning plate 73, a magnet block 714 matched with the magnet ring 713 is embedded on the vertical cleaning scraper 41, and the rotary mechanism 7 are additionally arranged in the invention, through the rotation effect, can detach the solid matter that deposits on the filter sieve 6 to guarantee that filter sieve 6 has good screening effect all the time, avoid the flue gas to receive the hindrance when upward movement.
The working principle of the invention comprises the following processes:
when the flue gas enters the spray tower 1 through the flue gas channel 2, the spray liquid inlet pipe 3 sprays absorption liquid for absorbing sulfur-containing substances in the flue gas;
along with the continuous upward movement of the flue gas, the flue gas enters the trumpet-shaped smoke outlet pipe 48 and the fixed plugging cylinder 412 and pushes the movable sealing plate 411 to move upwards, the movable sealing plate 411 can drive the threaded rod 410 to move upwards when moving, because the threaded rod 410 is in threaded connection with the inner spiral pipe 45, the inner spiral pipe 45 can be rotated by the movement of the threaded rod 410 in the vertical direction, the fixed disc 44 can be driven to rotate by the rotation of the inner spiral pipe 45, the vertical cleaning scraper 41 and the arc cleaning scraper 42 are driven to rotate by the inclined connecting rod 43, the solid matters deposited on the inner side walls of the spray tower 1 and the flue gas channel 2 can be scraped by the rotation of the vertical cleaning scraper 41 and the arc cleaning scraper 42, and the corrosion of the solid matters on the inner side walls of the spray tower 1 and the flue gas channel 2 is prevented;
the continuous upward movement of the movable sealing plate 411 in the fixed plugging cylinder 412 enables the movable sealing plate 411 to drive the combination of the arc-shaped plugging plate 51 and the vertical connecting rod 52 to move upward, the upward movement of the arc-shaped plugging plate 51 and the vertical connecting rod 52 can be separated from the smoke outlet through hole 414, and when the upward movement of the movable sealing plate 411 and the smoke outlet through hole 414 are dislocated, smoke can move out of the fixed plugging cylinder 412 through the smoke outlet through hole 414;
the vertical cleaning scraper 41 can drive the filter sieve 6 to rotate in the rotating process, and the filter sieve 6 is arranged, so that absorption liquid can be prevented from flowing in the flue gas channel 2 in a waterfall shape;
meanwhile, the rotation of the filter screen 6 enables the rotary cleaning plate 73 to rotate relative to the fixed column 71 under the action of the rotating force, and the rotation of the rotary cleaning plate 73 can clean solids deposited on the filter screen 6, so that the filter screen 6 is ensured to have a good screening effect all the time; in the moving process, in order to ensure that the rotary cleaning plate 73 can rotate relative to the filter sieve 6, a combined structure of a bearing block 712, a magnet ring 713 and a magnet block 714 is additionally arranged in the device, and the side, close to each other, of the magnet ring 713 and the magnet block 714 is arranged to be the same side in magnetism;
in the rotating process of the rotating cleaning plate 73, under the synergistic effect of centrifugal force and elastic force of the return spring 75, the supporting sliding ring 74 can make a circular reciprocating motion relative to the rotating cleaning plate 73 (the arrangement of the magnet ring 713 and the magnet block 714 can also make the circular motion of the rotating cleaning plate 73 orderly performed), when the supporting sliding ring 74 makes a motion relative to the rotating cleaning plate 73, the supporting sliding ring can drive the moving slider 76 to move in the moving chute 77, the movement of the moving slider 76 can drive the driving spur rack 78 to move, the movement of the driving spur rack 78 can drive the driving gear 79 to rotate, the rotation of the driving gear 79 can drive the rotating rod 710 to rotate, the rotation of the rotating rod 710 can drive the cleaning chassis 711 to rotate, and the rotation of the cleaning chassis 711 can cooperate with the rotating cleaning plate 73 to complete the cleaning process of solids on the filter screen 6.
The invention has the beneficial effects that:
the invention improves the existing calcium-based wet desulphurization equipment, and the improved calcium-based wet desulphurization equipment can avoid the accumulation of solids at the inlet flue of the absorption tower in the use process, simultaneously prevent absorption liquid from flowing down in a waterfall shape, effectively reduce the resistance to flue gas, and reduce the energy consumption of a desulphurization fan, thereby leading the equipment to save more resources.
According to the invention, the cleaning mechanism 4 is additionally arranged, the rotation of the vertical cleaning scraper 41 and the arc-shaped cleaning scraper 42 can be realized under the pushing action of the flue gas, and the solids deposited on the inner walls of the spray tower 1 and the flue gas channel 2 can be effectively removed through the rotation of the vertical cleaning scraper 41 and the arc-shaped cleaning scraper 42, so that the inner walls of the spray tower 1 and the flue gas channel 2 can be effectively prevented from being corroded, and the service lives of the spray tower 1 and the flue gas channel 2 are prolonged.
In the invention, the blocking mechanism 5 is additionally arranged, and the arrangement of the blocking mechanism 5 is used for opening and blocking the smoke outlet through hole 414, specifically, when smoke flows out, the blocking mechanism 5 opens the smoke outlet through hole 414, and the blocking mechanism 5 blocks the smoke outlet through hole 414, so that suspended matters floating in the spray tower 1 can be prevented from entering the fixed blocking cylinder 412 and depositing on the movable sealing plate 411 when no smoke is desulfurized, and the upward movement of the movable sealing plate 411 is hindered.
The filter sieve 6 is additionally arranged, the filter sieve 6 can effectively prevent the absorption liquid from flowing down in a waterfall shape, so that the absorption liquid can better absorb sulfur in the flue gas, and the filter sieve 6 can prevent the flue gas from being blocked, so that the effect of saving more energy is achieved.
The rotary mechanism 7 is additionally arranged, and the solid matters deposited on the filter screen 6 can be removed through the rotation effect of the rotary mechanism 7, so that the filter screen 6 is ensured to have a good screening effect all the time, and the smoke is prevented from being blocked when moving upwards.
The invention has reasonable structural design, and the movement of the cleaning mechanism 4, the plugging mechanism 5, the filter sieve 6 and the rotating mechanism 7 does not need to be additionally provided with an external power source, thereby not only reducing the production investment, but also ensuring the high efficiency of the equipment.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a flue corrosion prevention device for calcium-based wet flue gas desulfurization, includes spray column (1), flue gas passageway (2) and sprays liquid and advances pipe (3), the lower extreme intercommunication of spray column (1) is provided with flue gas passageway (2), it advances pipe (3) intercommunication grafting on the lateral wall of spray column (1) to spray liquid, its characterized in that, be provided with clearance mechanism (4) in spray column (1).
2. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 1, characterized in that: the cleaning mechanism (4) comprises a vertical cleaning scraper (41) and an arc cleaning scraper (42), the vertical cleaning scraper (41) is arranged with the inner side wall of the flue gas channel (2) in a sliding manner, the vertical cleaning scraper (41) is fixedly arranged on the lower end face of the arc cleaning scraper (42), the arc cleaning scraper (42) is arranged with the inner side wall of the lower edge of the spray tower (1) in a sliding manner, an inclined connecting rod (43) is fixedly connected onto the upper end face of the arc cleaning scraper (42), the free end of the inclined connecting rod (43) is fixedly connected onto a fixed disk (44), the fixed disk (44) is fixedly sleeved outside an inner spiral pipe (45), a movable support ring (46) is movably sleeved outside the inner spiral pipe (45), a plurality of horizontal connecting rods (47) are fixedly connected onto the outer side wall of the movable support ring (46), the free end of each horizontal connecting rod (47) is fixedly connected onto the inner side wall of a horn-shaped smoke outlet pipe (48), and loudspeaker form goes out tobacco pipe (48) fixed grafting on fixed seal plate (49), fixed seal plate (49) fixed connection is in spray column (1), the upper end that loudspeaker form goes out tobacco pipe (48) is connected with a fixed shutoff section of thick bamboo (412), a plurality of goes out cigarette through-hole (414) have been seted up on the lateral wall of a fixed shutoff section of thick bamboo (412), and fixed shutoff section of thick bamboo (412) internalization is provided with movable seal plate (411), fixedly connected with threaded rod (410) on the lower terminal surface of movable seal plate (411), and threaded rod (410) screw thread grafting is in interior spiral tube (45), fixedly connected with support assembly (413) that resets on the up end of movable seal plate (411), and the free end fixed connection of support assembly (413) that resets is on the roof in a fixed shutoff section of thick bamboo (412).
3. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 2, characterized in that: the reset support assembly (413) comprises a reset support rod (4131), a reset support barrel (4132) and a reset support spring (4133), the reset support rod (4131) is movably inserted in the reset support barrel (4132), the reset support spring (4133) is wound outside the reset support rod (4131), and two ends of the reset support spring (4133) are fixedly connected to the side wall of the reset support rod (4131) and the outer side wall of the reset support barrel (4132) respectively.
4. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 2, characterized in that: be provided with a plurality of shutoff mechanism (5) in fixed shutoff section of thick bamboo (412), the quantity of shutoff mechanism (5) sets up with the quantity phase-match of cigarette through-hole (414), shutoff mechanism (5) are including arc shutoff board (51) and vertical connecting rod (52), the inboard wall of arc shutoff board (51) and fixed shutoff section of thick bamboo (412) slides mutually and sets up, and the lower extreme fixedly connected with vertical connecting rod (52) of arc shutoff board (51), the lower extreme fixed connection of vertical connecting rod (52) is on the up end of moving sealing plate (411).
5. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 2, characterized in that: the flue gas channel (2) is provided with a filter sieve (6) in a rotating manner, and the filter sieve (6) is fixedly arranged at the lower end of the vertical cleaning scraper (41).
6. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 5, characterized in that: the upper end surface of the filter screen (6) is provided with a rotating mechanism (7), the rotating mechanism (7) can remove solids deposited on the filter screen (6) through rotating action, and meanwhile, the absorption liquid can be prevented from flowing down in a waterfall shape in cooperation with the filter screen (6).
7. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 6, characterized in that: the rotary mechanism (7) comprises a fixed column (71) and a rotary supporting tube (72), the fixed column (71) is fixedly arranged in the middle of the upper end face of the filter screen (6), the rotary supporting ring (72) is movably sleeved outside the fixed column (71), and a rotary cleaning plate (73) is fixedly connected to the outer side wall of the rotary supporting ring (72).
8. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 7, characterized in that: the outer movable sleeve of rotatory clearance board (73) is equipped with support sliding ring (74), and rotatory clearance board (73) still twines outward and is connected with reset spring (75), fixed connection is on the lateral wall of rotatory clearance board (73) and support sliding ring (74) at the both ends of reset spring (75) respectively, fixedly connected with removes slider (76) on the interior roof of support sliding ring (74), and removes slider (76) and slide and set up in removing spout (77), it sets up on rotatory clearance board (73) to remove spout (77), the lateral wall fixedly connected with drive spur rack (78) of removing slider (76), and drive spur rack (78) activity sets up in removing spout (77), drive spur rack (78) is connected with a plurality of drive gear (79) homogeneous phase meshing, and the fixed cover of drive gear (79) is established outside dwang (710), dwang (710) rotate to set up on rotatory clearance board (73), and the lower extreme fixedly connected with clearance chassis (711) of dwang (710).
9. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 8, characterized in that: one end of the rotary cleaning plate (73) far away from the rotary supporting ring (72) is fixedly connected with a bearing block (712).
10. The flue corrosion prevention apparatus for calcium-based wet desulfurization according to claim 9, characterized in that: support fixedly connected with magnet ring (713) on slip ring (74), and magnet ring (713) activity cover is established outside rotatory clearance board (73), inlay on vertical clearance scraper blade (41) and have magnet piece (714) with magnet ring (713) assorted.
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| CN113551246B (en) | 2023-06-06 |
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