CN113551246B - Flue corrosion prevention device for calcium-based wet desulfurization - Google Patents
Flue corrosion prevention device for calcium-based wet desulfurization Download PDFInfo
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- CN113551246B CN113551246B CN202110713342.8A CN202110713342A CN113551246B CN 113551246 B CN113551246 B CN 113551246B CN 202110713342 A CN202110713342 A CN 202110713342A CN 113551246 B CN113551246 B CN 113551246B
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- 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 corrosion prevention device for calcium-based wet desulfurization, 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 spray liquid inlet pipe is communicated and inserted on the side wall of the spray tower, and a cleaning mechanism is arranged in the spray tower; the invention improves the existing calcium-based wet desulfurization equipment, and the improved calcium-based wet desulfurization equipment can not only prevent solids from accumulating at the inlet flue of the absorption tower, but also prevent absorption liquid from flowing down in a waterfall shape, thereby effectively reducing the resistance to flue gas and reducing the energy consumption of a desulfurization fan, and further saving resources of the equipment.
Description
Technical Field
The invention relates to the technical field of wet desulfurization, in particular to a flue corrosion prevention device for calcium-based wet desulfurization.
Background
At present, the industries of thermoelectric, iron and steel, metallurgy, cement and the like in China mainly adopt a wet flue gas desulfurization process to remove sulfur dioxide in flue gas. The desulfurizing tower is the most critical core equipment in the wet flue gas desulfurization process system and can be divided into a spray tower, a bubbling tower, a liquid column tower and the like according to different technical characteristics, wherein the spray tower is a main flow tower type of the wet flue gas desulfurization process, and is generally arranged in a way 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 can flow downwards along the tower wall. When the absorption liquid flows to the flue gas 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 flue gas resistance, thereby increasing the energy consumption of the desulfurization fan, easily causing solid accumulation in the inlet flue of the absorption tower, corroding the flue and the tower body, and increasing the operation energy consumption and the overhaul and maintenance cost. In order to solve the problems, the invention provides a flue corrosion prevention device for calcium-based wet desulfurization.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects of the prior art, adapt to the actual needs, and provide a flue anti-corrosion device for calcium-based wet desulfurization so as to solve the technical problems.
(2) Technical proposal
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the utility model provides a flue anticorrosion device for calcium-based wet flue desulfurization, includes spray column, flue gas passageway and spray liquid feed pipe, the lower extreme intercommunication of spray column is provided with the flue gas passageway, spray liquid feed pipe intercommunication is pegged graft on the lateral wall of spray column, be provided with clearance mechanism in the spray column.
Further, clearance mechanism includes vertical clearance scraper blade and arc clearance scraper blade, vertical clearance scraper blade and flue gas channel's inside wall slip setting, and vertical clearance scraper blade fixed setting is on arc clearance scraper blade's lower extreme, arc clearance scraper blade and spray column lower limb slope's inside wall slip setting, and fixedly connected with slope connecting rod on the up end of arc clearance scraper blade, the free end fixed connection of slope connecting rod is on the fixed disk, and fixed disk fixed cover is established outside the inner spiral pipe, the outer movable sleeve of inner spiral pipe is equipped with movable support ring, and fixedly connected with a plurality of horizontal connecting rod on movable support ring's the lateral wall, the free end fixed connection of horizontal connecting rod is on the inside wall of tubaeform play tobacco pipe, and tubaeform play tobacco pipe fixed grafting is on fixed sealing plate, fixed sealing plate fixed connection is in the spray column, the upper end of tubaeform play is connected with fixed shutoff section of thick bamboo, a plurality of play tobacco through-hole has been seted up on the lateral wall of fixed shutoff section of thick bamboo, and fixed section of thick bamboo in movable setting has the movable sealing plate, the last fixedly connected with threaded rod of movable sealing plate on the lower terminal surface of movable sealing plate, and the screw rod in the inner spiral pipe is fixed connection, the upper end of the fixed connection of the upper end of the spiral pipe fixed connection reset shutoff pipe and reset plug.
Further, the reset supporting component comprises a reset supporting rod, a reset supporting cylinder and a reset supporting spring, wherein the reset supporting rod is movably inserted into the reset supporting cylinder, the reset supporting spring is connected outside the reset supporting rod in a winding manner, and two ends of the reset supporting spring are respectively and fixedly connected onto the side wall of the reset supporting rod and the outer side wall of the reset supporting cylinder.
Further, be provided with a plurality of shutoff mechanism in the fixed shutoff section of thick bamboo, the quantity of shutoff mechanism and the quantity phase-match setting of play cigarette through-hole, shutoff mechanism includes arc shutoff board and vertical connecting rod, the inside wall of arc shutoff board and fixed shutoff section of thick bamboo slides mutually and sets up, and the lower extreme fixedly connected with vertical connecting rod of arc shutoff board, the lower extreme fixedly connected with of vertical connecting rod is on the up end of moving the closing plate.
Further, the flue gas channel is internally provided with a filter screen in a rotating mode, and the filter screen is fixedly arranged at the lower end of the vertical cleaning scraping plate.
Further, the upper end face of the filter screen is provided with a rotating mechanism, and the rotating mechanism can remove solid matters deposited on the filter screen through the rotating effect, and meanwhile, the filter screen can be cooperated to prevent absorption liquid from flowing down in a waterfall shape.
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 screen, and the outer movable sleeve of fixed column is equipped with rotatory support ring, fixedly connected with rotatory clearance board on the lateral wall of rotatory support ring.
Further, the outer movable sleeve of rotatory clearance board is equipped with the support slip ring, and the outer winding of rotatory clearance board is connected with reset spring, reset spring's both ends respectively fixed connection on the lateral wall of rotatory clearance board and on the lateral wall of support slip ring, fixedly connected with removes the slider on the interior roof of support slip ring, and remove the slider and slide and set up in removing the spout, it sets up on rotatory clearance board to remove the spout, the lateral wall fixedly connected with drive straight rack of removal slider, and the activity of drive straight rack sets up in removing the spout, drive straight rack and a plurality of drive gear homogeneous phase meshing are connected, and drive gear fixed sleeve establishes outside the dwang, the dwang rotates and sets up on rotatory clearance board, and the lower extreme fixedly connected with clearance chassis of dwang.
Further, one end of the rotary cleaning plate far away from the rotary supporting ring is fixedly connected with a bearing block.
Further, a magnet ring is fixedly connected to the support sliding ring, the magnet ring is movably sleeved outside the rotary cleaning plate, and a magnet block matched with the magnet ring is inlaid on the vertical cleaning scraping plate.
(3) The beneficial effects are that:
the invention improves the existing calcium-based wet desulfurization equipment, and the improved calcium-based wet desulfurization equipment can not only prevent solids from accumulating at the inlet flue of the absorption tower, but also prevent absorption liquid from flowing down in a waterfall shape, thereby effectively reducing the resistance to flue gas and reducing the energy consumption of a desulfurization fan, and further saving resources of the equipment.
The cleaning mechanism is additionally arranged, the rotation of the vertical cleaning scraping plate and the arc-shaped cleaning scraping plate can be realized through the pushing action of the smoke, and the solids deposited on the inner walls of the spray tower and the smoke channel can be effectively removed through the rotation of the vertical cleaning scraping plate and the arc-shaped cleaning scraping plate, so that the inner walls of the spray tower and the smoke channel can be effectively prevented from being corroded, and the service lives of the spray tower and the smoke channel can be prolonged.
The invention is additionally provided with the plugging mechanism, the plugging mechanism is used for opening and plugging the smoke outlet through hole, in particular, the plugging mechanism opens the smoke outlet through hole when smoke flows out, the plugging mechanism plugs the smoke outlet through hole, suspended matters floating in the spray tower can be prevented from entering the fixed plugging cylinder when no smoke is desulfurized, and the suspended matters are deposited on the movable sealing plate, so that the upward movement of the movable sealing plate is blocked.
The filter screen is additionally arranged in the invention, so that the absorption liquid can be effectively prevented from flowing down in a waterfall shape, sulfur in the flue gas can be better absorbed by the absorption liquid, and the flue gas can be prevented from being blocked by the filter screen, thereby achieving the effect of saving energy.
The invention is additionally provided with the rotating mechanism, and the solid matters deposited on the filter screen can be removed through the rotating action, so that the filter screen is ensured to have a good screening effect all the time, and the smoke is prevented from being blocked during upward movement.
The invention has reasonable structural design, and the cleaning mechanism, the plugging mechanism, the filter screen and the rotating mechanism do not need to be additionally provided with external power sources, so that the production investment can be reduced, and meanwhile, the high-efficiency performance of the equipment can be ensured.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the flue anticorrosion apparatus for calcium-based wet desulfurization of the present invention;
FIG. 2 is an enlarged schematic view of section C-C of FIG. 1 of the flue anticorrosion apparatus for calcium-based wet desulfurization of the present invention;
FIG. 3 is a schematic view of the partially enlarged structure of FIG. 1 of the flue anticorrosion apparatus for calcium-based wet desulfurization of the present invention;
FIG. 4 is an enlarged schematic view of the structure A in FIG. 3 of the flue anticorrosion apparatus for calcium-based wet desulfurization of the present invention;
FIG. 5 is a partially enlarged partial schematic perspective view of the flue gas channel of FIG. 1 of a flue corrosion protection apparatus for calcium-based wet desulfurization according to the present invention;
FIG. 6 is a schematic view of the partially enlarged structure of FIG. 5 of the flue anticorrosion apparatus for calcium-based wet desulfurization of the present invention;
FIG. 7 is an enlarged schematic view of the structure B in FIG. 6 of the flue anticorrosion apparatus for calcium-based wet desulfurization of the present invention.
The reference numerals are as follows:
Detailed Description
The invention is further illustrated by the following examples in connection with figures 1-7:
the invention relates to a flue corrosion prevention device for calcium-based wet desulfurization, which 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 with and inserted on the side wall of the spray tower 1, and a cleaning mechanism 4 is arranged in the spray tower 1.
In the embodiment, the cleaning mechanism 4 comprises a vertical cleaning scraper 41 and an arc cleaning scraper 42, the vertical cleaning scraper 41 and the inner side wall of the flue gas channel 2 are arranged in a sliding way, the vertical cleaning scraper 41 is fixedly arranged on the lower end face of the arc cleaning scraper 42, the arc cleaning scraper 42 and the inner side wall inclined to the lower edge of the spray tower 1 are arranged in a sliding way, the upper end face 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 disc 44, the fixed disc 44 is fixedly sleeved outside an inner spiral tube 45, the inner spiral tube 45 is movably sleeved with a movable supporting ring 46, a plurality of horizontal connecting rods 47 are fixedly connected to the outer side wall of the movable supporting ring 46, the free ends of the horizontal connecting rods 47 are fixedly connected to the inner side wall of a horn-shaped flue gas outlet tube 48, the horn-shaped flue gas outlet tube 48 is fixedly spliced on a fixed sealing plate 49, the fixed sealing plate 49 is fixedly connected in the spray tower 1, the upper end of the horn-shaped smoke outlet pipe 48 is connected with a fixed blocking cylinder 412, a plurality of smoke outlet through holes 414 are formed on the side wall of the fixed blocking cylinder 412, a movable sealing plate 411 is movably arranged in the fixed blocking cylinder 412, a threaded rod 410 is fixedly connected on the lower end face of the movable sealing plate 411, the threaded rod 410 is inserted in the inner spiral pipe 45 in a threaded manner, a reset supporting component 413 is fixedly connected on the upper end face of the movable sealing plate 411, the free end of the reset supporting component 413 is fixedly connected on the inner top wall of the fixed blocking cylinder 412, the cleaning mechanism 4 is additionally arranged, the vertical cleaning scraping plate 41 and the arc cleaning scraping plate 42 can rotate under the pushing action of smoke, the vertical cleaning scraping plate 41 and the arc cleaning scraping plate 42 rotate, the solid matters deposited on the inner walls of the spray tower 1 and the flue gas channel 2 can be effectively removed, so that the inner side 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 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 winded and connected outside the reset supporting rod 4131, two ends of the reset supporting spring 4133 are respectively and fixedly connected on the side wall of the reset supporting rod 4131 and the outer side wall of the reset supporting cylinder 4132, and the reset supporting assembly 413 is arranged, so that the function of guiding and supporting the movement of the movable sealing plate 411 can be achieved, and meanwhile, the power can be provided 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 barrel 412, the number of the plugging mechanisms 5 is matched with the number of the smoke outlet through holes 414, the plugging mechanisms 5 comprise arc-shaped plugging plates 51 and vertical connecting rods 52, the arc-shaped plugging plates 51 are slidably disposed on the inner side walls of the fixed plugging barrel 412, the lower ends of the arc-shaped plugging plates 51 are fixedly connected with the vertical connecting rods 52, the lower ends of the vertical connecting rods 52 are fixedly connected to the upper end faces of the movable sealing plates 411, the plugging mechanisms 5 are additionally disposed in the invention, the plugging mechanisms 5 are used for realizing the opening and plugging of the smoke outlet through holes 414, specifically, the plugging of the smoke outlet through holes 414 by the plugging mechanisms 5 is carried out when smoke flows out, suspended matters floating in the spray tower 1 can be prevented from entering the fixed plugging barrel 412 when no smoke is desulfurized, and are deposited on the movable sealing plates 411, so that upward movement of the movable sealing plates 411 is blocked.
In this embodiment, the filter screen 6 is rotatably disposed in the flue gas channel 2, and the filter screen 6 is fixedly disposed at the lower end of the vertical cleaning scraper 41, and the filter screen 6 is additionally disposed in the invention, so that the absorption liquid can be effectively prevented from flowing down in a waterfall shape, and thus the absorption liquid can absorb sulfur in the flue gas better, and the filter screen 6 can also prevent the flue gas from being blocked, thereby achieving the effect of saving energy more.
In the embodiment, the upper end face of the filter screen 6 is provided with the rotating mechanism 7, the rotating mechanism 7 is arranged, through the rotating action, solids deposited on the filter screen 6 can be removed, meanwhile, the filter screen 6 can be cooperated, absorption liquid is prevented from flowing down in a waterfall shape, the rotating mechanism 7 comprises the fixed column 71 and the rotating support tube 72, the fixed column 71 is fixedly arranged on the middle part of the upper end face 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 on the outer side wall of the rotating support ring 72, a supporting sliding ring 74 is movably sleeved outside the rotating cleaning plate 73, a reset spring 75 is also wound and connected outside the rotating cleaning plate 73, two ends of the reset spring 75 are respectively fixedly connected on the side wall of the rotating cleaning plate 73 and the side wall of the supporting sliding ring 74, a movable sliding block 76 is fixedly connected on the inner top wall of the supporting sliding ring 74, the movable slide block 76 is arranged in the movable slide groove 77 in a sliding way, the movable slide groove 77 is arranged on the rotary cleaning plate 73, the side wall of the movable slide block 76 is fixedly connected with a driving straight rack 78, the driving straight rack 78 is movably arranged in the movable slide groove 77, the driving straight rack 78 is in meshed connection 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 supporting ring 72 is fixedly connected with a bearing block 712, the supporting sliding ring 74 is fixedly connected with a magnet ring 713, the magnet ring 713 is movably sleeved outside the rotary cleaning plate 73, the vertical cleaning scraping plate 41 is embedded with a magnet block 714 matched with the magnet ring 713, through the rotation effect, the deposited solids on the filter screen 6 can be removed, 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 during upward movement.
The working principle of the invention comprises the following steps:
when the flue gas enters the spray tower 1 through the flue gas channel 2, the spray liquid inlet pipe 3 sprays absorption liquid at the position for absorbing sulfur-containing substances in the flue gas;
along with the continuous upward movement of the flue gas, the flue gas enters the horn-shaped flue pipe 48 and the fixed plugging cylinder 412 and pushes the movable sealing plate 411 to move upwards, the movable sealing plate 411 moves upwards with the threaded rod 410 when moving, and the threaded rod 410 is in threaded connection with the inner spiral pipe 45, so that the threaded rod 410 moves in the vertical direction, the inner spiral pipe 45 can rotate, the inner spiral pipe 45 rotates with the fixed disc 44, the vertical cleaning scraping plate 41 and the arc cleaning scraping plate 42 rotate through the inclined connecting rod 43, and solids 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 scraping plate 41 and the arc cleaning scraping plate 42, so that corrosion of the solids 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 barrel 412 can cause the movable sealing plate 411 to move upward with the combination of the arc-shaped plugging plate 51 and the vertical connecting rod 52, the upward movement of the arc-shaped plugging plate 51 and the vertical connecting rod 52 can separate 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 misplaced, smoke can move out of the fixed plugging barrel 412 through the smoke outlet through hole 414;
the vertical cleaning scraping plate 41 can rotate with the filter screen 6 in the rotating process, and the filter screen 6 can prevent the absorption liquid from flowing in the smoke channel 2 in a waterfall shape;
meanwhile, the rotation of the filter screen 6 can enable 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 remove solid matters deposited on the filter screen 6, so that the filter screen 6 is ensured to have a good screening effect all the time; in order to ensure that the rotary cleaning plate 73 can rotate relative to the filter screen 6 during the movement, a combined structure of a bearing block 712, a magnet ring 713 and a magnet block 714 is added in the device, and the side, close to each other, of the magnet ring 713 and the magnet block 714 is provided with the side with the same magnetism;
in the rotating process of the rotary cleaning plate 73, under the synergistic effect of centrifugal force and the elastic force of the return spring 75, the support sliding ring 74 can make cyclic reciprocating motion relative to the rotary cleaning plate 73 (the arrangement of the magnet ring 713 and the magnet block 714 can also make cyclic motion of the rotary cleaning plate 73 orderly), when the support sliding ring 74 moves relative to the rotary cleaning plate 73, the support sliding ring moves in the moving sliding groove 77 along with the moving sliding block 76, the moving sliding block 76 moves along with the driving straight rack 78, the driving straight rack 78 moves to enable the driving gear 79 to rotate, the driving gear 79 rotates along with the rotating rod 710, the rotating rod 710 rotates along with the cleaning chassis 711, and the cleaning chassis 711 rotates along with the rotary 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 desulfurization equipment, and the improved calcium-based wet desulfurization equipment can not only prevent solids from accumulating at the inlet flue of the absorption tower, but also prevent absorption liquid from flowing down in a waterfall shape, thereby effectively reducing the resistance to flue gas and reducing the energy consumption of a desulfurization fan, and further saving resources of the equipment.
The cleaning mechanism 4 is additionally arranged in the invention, the rotation of the vertical cleaning scraping plate 41 and the arc cleaning scraping plate 42 can be realized through the pushing action of the smoke, and the 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 scraping plate 41 and the arc cleaning scraping plate 42, so that the inner walls of the spray tower 1 and the smoke channel 2 can be effectively prevented from being corroded, and the service lives of the spray tower 1 and the smoke channel 2 can be prolonged.
The plugging mechanism 5 is additionally arranged in the invention, and the plugging mechanism 5 is arranged for realizing the opening and plugging of the smoke outlet through hole 414, specifically, the plugging mechanism 5 opens the smoke outlet through hole 414 when smoke flows out, the plugging of the smoke outlet through hole 414 by the plugging mechanism 5 can prevent suspended matters floating in the spray tower 1 from entering the fixed plugging cylinder 412 when no smoke is desulfurized, and the suspended matters are deposited on the movable sealing plate 411, so that the upward movement of the movable sealing plate 411 is blocked.
According to the invention, the filter screen 6 is additionally arranged, and the filter screen 6 is arranged, so that the absorption liquid can be effectively prevented from flowing down in a waterfall shape, sulfur in the flue gas can be better absorbed by the absorption liquid, and the flue gas can be prevented from being blocked by the filter screen 6, so that a more energy-saving effect is achieved.
According to the invention, the rotating mechanism 7 is additionally arranged, and solid matters deposited on the filter screen 6 can be removed through the rotating function by arranging the rotating 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 during upward movement.
The invention has reasonable structural design, and the cleaning mechanism 4, the plugging mechanism 5, the filter screen 6 and the rotating mechanism 7 do not need to be additionally provided with external power sources, so that the production investment can be reduced, and meanwhile, the high-efficiency performance of the equipment can be ensured.
The embodiments of the present invention are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides a flue anticorrosion device for calcium-based wet flue gas desulfurization, includes spray column (1), flue gas passageway (2) and spray liquid feed tube (3), the lower extreme intercommunication of spray column (1) is provided with flue gas passageway (2), spray liquid feed tube (3) intercommunication grafting is on the lateral wall of spray column (1), characterized in that, be provided with clearance mechanism (4) in spray column (1); the cleaning mechanism (4) comprises a vertical cleaning scraping plate (41) and an arc cleaning scraping plate (42), the vertical cleaning scraping plate (41) and the inner side wall of the smoke channel (2) are arranged in a sliding mode, the vertical cleaning scraping plate (41) is fixedly arranged on the lower end face of the arc cleaning scraping plate (42), the arc cleaning scraping plate (42) and the inner side wall inclined at the lower edge of the spray tower (1) are arranged in a sliding mode, an inclined connecting rod (43) is fixedly connected to the upper end face of the arc cleaning scraping plate (42), the free end of the inclined connecting rod (43) is fixedly connected to a fixed disc (44), the fixed disc (44) is fixedly sleeved outside an inner spiral pipe (45), a movable supporting ring (46) is sleeved outside the inner spiral pipe (45), a plurality of horizontal connecting rods (47) are fixedly connected to the outer side wall of the movable supporting ring (46), the free end of each horizontal connecting rod (47) is fixedly connected to the inner side wall of the corresponding horn-shaped smoke outlet pipe (48), the horn-shaped smoke outlet (48) is fixedly inserted on a fixed sealing plate (49), the fixed sealing plate (49) is fixedly connected to the inner side wall of the horn-shaped smoke outlet pipe (412), the inner spiral pipe (412) is fixedly connected to the inner side wall of the smoke outlet pipe (412), the movable sealing plate (411) is movably arranged in the fixed sealing cylinder (412), a threaded rod (410) is fixedly connected to the lower end face of the movable sealing plate (411), the threaded rod (410) is inserted into the inner spiral pipe (45) in a threaded manner, a reset supporting component (413) is fixedly connected to the upper end face of the movable sealing plate (411), and the free end of the reset supporting component (413) is fixedly connected to the inner top wall of the fixed sealing cylinder (412); the reset supporting assembly (413) comprises a reset supporting rod (4131), a reset supporting cylinder (4132) and a reset supporting spring (4133), wherein the reset supporting rod (4131) is movably inserted into the reset supporting cylinder (4132), the reset supporting spring (4133) is connected outside the reset supporting rod (4131) in a winding mode, and two ends of the reset supporting spring (4133) are fixedly connected to the side wall of the reset supporting rod (4131) and the outer side wall of the reset supporting cylinder (4132) respectively.
2. The flue gas anti-corrosion device for calcium-based wet desulfurization according to claim 1, wherein: be provided with a plurality of shutoff mechanism (5) in fixed shutoff section of thick bamboo (412), the quantity of shutoff mechanism (5) and the quantity phase-match setting of play cigarette through-hole (414), shutoff mechanism (5) are including arc shutoff board (51) and vertical connecting rod (52), arc shutoff board (51) slide the setting with the inside wall of fixed shutoff section of thick bamboo (412), and the lower extreme fixedly connected with vertical connecting rod (52) of arc shutoff board (51), the lower extreme fixedly connected with of vertical connecting rod (52) is on the up end of moving closing plate (411).
3. The flue gas anti-corrosion apparatus for calcium-based wet desulfurization according to claim 2, wherein: the flue gas channel (2) is rotationally provided with a filter screen (6), and the filter screen (6) is fixedly arranged at the lower end of the vertical cleaning scraping plate (41).
4. A flue gas anti-corrosion apparatus for calcium-based wet desulfurization according to claim 3, wherein: the upper end face of the filter screen (6) is provided with a rotating mechanism (7), and the rotating mechanism (7) can remove solid matters deposited on the filter screen (6) through rotating action, and meanwhile, the filter screen (6) can be cooperated to prevent absorption liquid from flowing down in a waterfall shape.
5. The flue gas anti-corrosion apparatus for calcium-based wet desulfurization according to claim 4, wherein: the rotary mechanism (7) comprises a fixed column (71) and a rotary supporting tube (72), the fixed column (71) is fixedly arranged on the middle of the upper end face of the filter screen (6), a 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).
6. The flue gas anti-corrosion apparatus for calcium-based wet desulfurization according to claim 5, wherein: the utility model discloses a rotary cleaning plate, including rotatory cleaning plate (73), rotatory cleaning plate (73) and fixed connection, rotatory cleaning plate (73) are equipped with and support slip ring (74) outward movable sleeve, and rotatory cleaning plate (73) are outer still twining to be connected with reset spring (75), the both ends of reset spring (75) are fixed connection respectively on the lateral wall of rotatory cleaning plate (73) and on the lateral wall of supporting slip ring (74), fixedly connected with removes slider (76) on the inner roof of supporting slip ring (74), and remove slider (76) and slide and set up in removing spout (77), remove spout (77) and offer on rotatory cleaning plate (73), the lateral wall fixedly connected with drive spur rack (78), and drive spur rack (78) activity sets up in removing spout (77), drive spur rack (78) and a plurality of drive gear (79) homophase meshing are connected, and drive gear (79) fixed sleeve is established outside dwang (710), dwang (710) rotate and set up on rotatory cleaning plate (73), and the lower extreme fixedly connected with clearance chassis (711) of dwang (710).
7. The flue gas anti-corrosion apparatus for calcium-based wet desulfurization according to claim 6, wherein: one end of the rotary cleaning plate (73) far away from the rotary supporting ring (72) is fixedly connected with a bearing block (712).
8. The flue gas anti-corrosion apparatus for calcium-based wet desulfurization according to claim 7, wherein: the support sliding ring (74) is fixedly connected with a magnet ring (713), the magnet ring (713) is movably sleeved outside the rotary cleaning plate (73), and the vertical cleaning scraping plate (41) is inlaid with a magnet block (714) matched with the magnet ring (713).
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| CN202110713342.8A CN113551246B (en) | 2021-06-25 | 2021-06-25 | Flue corrosion prevention device for calcium-based wet desulfurization |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113701265B (en) * | 2021-10-28 | 2021-12-31 | 南通正德江海机械制造有限公司 | Dehumidification ventilation equipment between storing of mill |
| CN114453355B (en) * | 2022-01-24 | 2023-03-21 | 天津国能津能热电有限公司 | Wet flue desulfurization anti-clogging device |
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