CN119588133A - Dedusting desulfurizing tower - Google Patents
Dedusting desulfurizing tower Download PDFInfo
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- CN119588133A CN119588133A CN202411956287.5A CN202411956287A CN119588133A CN 119588133 A CN119588133 A CN 119588133A CN 202411956287 A CN202411956287 A CN 202411956287A CN 119588133 A CN119588133 A CN 119588133A
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- Prior art keywords
- flue gas
- desulfurizing tower
- tower body
- sleeve frame
- annular sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- Chemical & Material Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
本发明涉及废气处理技术领域，且公开了一种除尘脱硫塔，包括脱硫塔本体、所述脱硫塔本体底部的一侧和顶部分别设置有烟气输入口、烟气输出口，所述脱硫塔本体底部的另一侧设置有泵输装置、药液箱，且泵输装置能够将药液箱内部的净化药液输送至脱硫塔本体的内部，所述脱硫塔本体的内部套装有第一环形套架、动力输出装置、辅助环板，且动力输出装置的顶部与第一环形套架的底部之间安装有支撑杆。该除尘脱硫塔，搭配SNCR‑SCR联合脱硝装置、静电除尘器、活性炭吸附、布袋除尘器、湿法静电除尘器等装置形成烟气处理的多重处理装置，后续使用过程中能够对烟气中其化合物、灰尘进出多重净化处理，继而实现优越的环保处理效果。The present invention relates to the technical field of waste gas treatment, and discloses a dust removal and desulfurization tower, including a desulfurization tower body, a flue gas inlet and a flue gas outlet are respectively arranged on one side and the top of the bottom of the desulfurization tower body, a pumping device and a liquid medicine tank are arranged on the other side of the bottom of the desulfurization tower body, and the pumping device can transport the purified liquid medicine inside the liquid medicine tank to the inside of the desulfurization tower body, and the inside of the desulfurization tower body is equipped with a first annular sleeve, a power output device, and an auxiliary ring plate, and a support rod is installed between the top of the power output device and the bottom of the first annular sleeve. The dust removal and desulfurization tower, in combination with SNCR-SCR combined denitrification device, electrostatic precipitator, activated carbon adsorption, bag filter, wet electrostatic precipitator and other devices, forms a multiple treatment device for flue gas treatment, which can perform multiple purification treatments on its compounds and dust in the flue gas during subsequent use, thereby achieving excellent environmental protection treatment effects.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a dedusting and desulfurizing tower.
Background
With the acceleration of the industrialization process, atmospheric pollutants generated by coal burning and the like have serious influence on the environment, for example, in the flue gas generated by the combustion of a boiler in a coal-fired power plant, dust and sulfides in the flue gas can seriously harm the environment and the health of operators.
At present, under the effort of related researchers, some devices and technologies for flue gas purification treatment are disclosed, common devices such as an electrostatic precipitator, a cloth bag dust remover, a wet-type dust remover, a desulfurization tower and the like are disclosed, wherein the electrostatic precipitator charges dust particles through a high-voltage electric field and deposits on a dust collecting plate, large-particle dust can be effectively removed, the cloth bag dust remover captures finer particles by means of forming a dust layer on the surface of a filter material, the wet-type dust remover has higher capture efficiency on micron-level dust, the wet-type dust remover utilizes a water mist spraying or circulating liquid washing mode to further improve the removal rate of fine particles and harmful gases under the electric action, the desulfurization tower adopts a limestone-gypsum flue gas desulfurization technology, SO2 in flue gas reacts with limestone slurry pumped into the tower to generate gypsum, and desulfurization is realized, however, the four methods have obvious limitations, such as the electrostatic precipitator has poor removal effect on the fine particles, the cloth bag dust remover is easy to block and has higher maintenance cost, the wet-type dust remover has larger energy consumption, the inside the tower has more fixed structure for the atomized and is easy to realize the purification and the whole desulfurization treatment of the limestone slurry has the important effects.
Disclosure of Invention
1. Technical problem to be solved
The invention provides a dedusting and desulfurizing tower, which solves the problems in the background technology.
(II) technical scheme
The invention provides a dedusting and desulfurizing tower which comprises a desulfurizing tower body, wherein one side and the top of the bottom of the desulfurizing tower body are respectively provided with a flue gas input port and a flue gas output port, the other side of the bottom of the desulfurizing tower body is provided with a pumping device and a liquid medicine box, and the pumping device can convey purified liquid medicine in the liquid medicine box to the inside of the desulfurizing tower body;
The inside of the desulfurizing tower body is sleeved with a first annular sleeve frame, a power output device and an auxiliary annular plate, a supporting rod is arranged between the top of the power output device and the bottom of the first annular sleeve frame, the inner side of the first annular sleeve frame is sleeved with a hollow annular plate through a bearing, a transmission gear and an internal gear ring are movably sleeved with the hollow annular plate, the transmission gear and the internal gear ring are in meshed transmission, the output end of the power output device is in transmission connection with the middle part of the transmission gear, the internal gear ring is nested at the inner side of the bottom of the hollow annular plate, a hollow conical guide pipe is clamped at the inner side of the top of the hollow annular plate, one end of the hollow conical guide pipe is connected with the output end of the pump transmission device, and a plurality of atomization pipe fittings are arranged in the middle of the hollow annular plate;
The inside of auxiliary ring board is equipped with the annular frame of second through the bearing housing, the inside nestification of the annular frame of second has first protection filter screen, and the second annular frame is located between flue gas input port and the flue gas delivery outlet with the sub-assembly that its inside first protection filter screen formed.
Preferably, the front end structure of the desulfurizing tower body is fixedly sleeved with an observation cylinder communicated with the space of the desulfurizing tower body, and a transparent cover plate is arranged at the front end port of the observation cylinder through screws, so that the use condition of direct observation from the outside of the device is provided for a user while the sealing of the whole device of the desulfurizing tower body is maintained.
Preferably, the power take-off includes biax motor, protective housing shell, the protective housing shell dress is in the outside of biax motor, and the both ends of bracing piece are fixed connection respectively in the top of protective housing shell and the bottom of first annular frame, first annular frame is fixed to be cup jointed in the inside of desulfurizing tower body.
Preferably, the double-shaft motor adopts the double-shaft motor, and then satisfies the user demand of a plurality of direction outputs, and two output of double-shaft motor run through the top of protecting the cover shell and the bottom of protecting the cover shell respectively, the output of double-shaft motor is nested with the cover department of protecting the cover shell and is used the sealing washer, guarantees the sealed effect of structural connection, drive gear's middle part is connected with double-shaft motor top output transmission.
Preferably, the atomizing pipe fittings of a plurality of all include square pipe, the inboard at cavity annular plate middle part is cup jointed to square pipe's one end is fixed, the bottom cover of square pipe other end is equipped with quantity and is not less than two and all towards the atomizer of supplementary annular plate top output, the inside at the desulfurizing tower body is cup jointed to supplementary annular plate is fixed.
Preferably, the cross section of second annular sleeve frame is V type structure, and second annular sleeve frame inner structure's bottommost department is provided with collecting element, transition sleeve includes transition sleeve, a collection section of thick bamboo, transition sleeve's top is fixed cup joints in the structure of second annular sleeve frame and communicates with each other with second annular sleeve frame top outside space, transition sleeve's bottom inboard and a top mouth threaded connection of a collection section of thick bamboo, and the nested second protection filter screen that has in the inner wall of a collection section of thick bamboo, collecting element can provide concentrated collection condition for the impurity that second annular sleeve frame and the inside first protection filter screen of second annular sleeve frame filtered out, and convenient follow-up change washs, maintains whole device's continuous result of use.
Preferably, the top of supplementary annular slab has seted up spacing screw hole, set up in the outer lane structure of second annular sleeve frame can with spacing screw hole alignment step down the groove, can run through step down the groove through the screw between supplementary annular slab and the second annular sleeve frame and carry out spacing installation to spacing screw hole again, guarantee the stability in supplementary annular slab and the second annular sleeve frame combination use from this.
Preferably, the output transmission of biax motor bottom is connected with the transition transmission shaft, the one end transmission of transition transmission shaft is connected with the subassembly that washs, the subassembly that washs comprises brush holder and a plurality of brush strip of fixed connection of brush holder bottom, a plurality of the bottom homoenergetic of brush strip and the corresponding position movable contact at second annular cover frame top, the subassembly that washs can link transition transmission shaft, power take off, and then with the state of autogiration to the inside first protection filter screen of second annular cover frame clear.
Preferably, the middle part of brush holder has been seted up and has been run through self buffer tank, reduces the resistance in the follow-up rotatory in-process, and a plurality of brush strip all adopts rubber materials to make, avoids appearing the problem of cleaning the fish tail.
The flue gas purification method with the participation of the dedusting and desulfurizing tower comprises the following operation steps:
S1, preprocessing smoke;
The flue gas generated by combustion carries a large amount of bed materials to turn through the furnace top, and enters two high-efficiency cyclone separators through two flue gas outlets positioned at the upper part of a water cooled wall of a rear wall for gas-solid separation, clean flue gas containing a small amount of fly ash after separation enters a furnace rear vertical shaft, a high-temperature superheater, a low-temperature superheater, a coal economizer and an air preheater which are arranged in the flue gas are subjected to heat release, and the unburned ashes of coarse particles separated by the high-efficiency cyclone separators directly enter a hearth along a material return device for recycling and re-burning to form a material recycling loop;
S2, primary purification of an electrostatic dust removal process;
The pretreated flue gas is conveyed to an electrostatic precipitator for electrostatic dust removal and purification treatment, and the electrostatic precipitator can be provided with activated carbon for adsorbing and removing dioxin in the flue gas;
s3, secondary purification of a cloth bag dust removal process;
Secondly, carrying out secondary dust removal on the primarily treated flue gas by a bag-type dust remover;
s4, purifying the dust removal desulfurization tower for three times;
The flue gas after secondary dust removal is taken out through current draught fan and is carried to the flue gas input port, enter into desulfurizing tower body inside through the flue gas input port, meanwhile, start pumping device, pump pumping device is with the inside purification liquid medicine pump of liquid medicine case to cavity toper honeycomb duct in, and the limestone thick liquid is selected for use to purification liquid medicine, the rethread cavity annular slab, a plurality of atomizing pipe fitting atomizes the diffusion afterwards, and then with enter into the inside flue gas abundant contact reaction of desulfurizing tower body, reach purification and dust fall effect, and avoid the dead angle of contact to appear, can utilize power take off device transmission drive gear in the output process of cavity annular slab, a plurality of atomizing pipe fitting, make drive gear and annular gear mesh and drive cavity annular slab and a plurality of atomizing pipe fitting carry out synchronous rotatory diffusion purification liquid medicine in succession, avoid appearing purifying the dead angle.
S5, four times of purification of the dedusting and desulfurizing tower;
delivering the desulfurized flue gas into a wet electrostatic precipitator through a flue gas outlet for further dedusting;
s6, discharging purified gas;
the flue gas after the final multiple purification can be discharged into an environmental atmosphere layer through the sleeve type glass fiber reinforced plastic wet chimney, so that the pollution to the environment is reduced.
Advantageous effects
The invention has the following beneficial effects:
1. the dedusting and desulfurizing tower is matched with an SNCR-SCR combined denitration device, an electrostatic precipitator, an activated carbon adsorption device, a cloth bag dust remover, a wet electrostatic precipitator and other devices to form a smoke treatment multiple treatment device, and in the subsequent use process, the compound and dust in the smoke can enter and exit the multiple purification treatment, so that the excellent environment-friendly treatment effect is realized.
2. This dust removal desulfurizing tower, the power take off of its inside setting, first annular sleeve frame, the cavity annular slab, hollow toper honeycomb duct, atomizing pipe fitting, drive gear, the transition transmission shaft of internal gear ring, the subassembly of cleaning, supplementary annular slab and second annular sleeve frame, collection part will constitute multi-functional purifying mechanism, in the follow-up use, except that power take off carries out the comprehensive diffusion of liquid medicine through drive gear, the hollow annular slab of internal gear ring meshing transmission, atomizing pipe fitting, guarantee the contact treatment effect to the sulphide in the flue gas, power take off can also pass through the first protection filter screen that the clear subassembly of transition transmission cleaning automatic clearance second annular sleeve frame and second annular sleeve put up in setting up, maintain the sustainable result of use of the first protection filter screen that sets up in second annular sleeve frame and the second annular sleeve frame.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
FIG. 2 is a schematic front view of the desulfurizing tower body of the present invention;
FIG. 3 is an enlarged schematic view of a first annular cradle of the present invention;
FIG. 4 is a schematic cross-sectional view of a second annular sleeve of the present invention;
FIG. 5 is an enlarged schematic view of the invention at A in FIG. 4;
fig. 6 is an enlarged schematic view of the present invention at B in fig. 4.
In the figure, 1, a desulfurizing tower body; 2, a smoke input port, 3, a smoke output port, 4, a liquid medicine box, 5, a pumping device, 6, a first annular sleeve frame, 7, a hollow annular plate, 8, a hollow conical honeycomb duct, 9, an atomization pipe fitting, 91, a square pipe, 92, an atomization nozzle, 10, a power output device, 101, a double-shaft motor, 102, a protective sleeve shell, 11, a transmission gear, 12, an internal gear ring, 13, an auxiliary annular plate, 14, a second annular sleeve frame, 15, a transition transmission shaft, 16, a cleaning assembly, 17, a collecting part, 171, a transition sleeve, 172 and a collecting cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-5, a dedusting and desulfurizing tower comprises a desulfurizing tower body 1, wherein one side and the top of the bottom of the desulfurizing tower body 1 are respectively provided with a flue gas input port 2 and a flue gas output port 3, the other side of the bottom of the desulfurizing tower body 1 is provided with a pumping device 5 and a liquid medicine box 4, the pumping device 5 can convey purified liquid medicine in the liquid medicine box 4 into the desulfurizing tower body 1, an observation cylinder communicated with a space of the desulfurizing tower body 1 is fixedly sleeved on a front end structure of the desulfurizing tower body 1, and a transparent cover plate is arranged at a front end port of the observation cylinder through screws, so that the use condition of direct observation from the outside of the device is provided for a user while the whole device of the desulfurizing tower body 1 is maintained to be sealed;
The inside of the desulfurizing tower body 1 is sleeved with a first annular sleeve frame 6, a power output device 10 and an auxiliary annular plate 13, a supporting rod is arranged between the top of the power output device 10 and the bottom of the first annular sleeve frame 6, the inside of the first annular sleeve frame 6 is respectively sleeved with a hollow annular plate 7 through a bearing, a transmission gear 11 and an internal gear ring 12 are movably sleeved with the hollow annular plate, the transmission gear 11 and the internal gear ring 12 are in meshed transmission, the output end of the power output device 10 is in transmission connection with the middle part of the transmission gear 11, and the internal gear ring 12 is nested inside the bottom of the hollow annular plate 7;
The power output device 10 comprises a double-shaft motor 101 and a protective casing 102, wherein the protective casing 102 is sleeved on the outer side of the double-shaft motor 101, two ends of a supporting rod are respectively and fixedly connected to the top of the protective casing 102 and the bottom of a first annular sleeve frame 6, the first annular sleeve frame 6 is fixedly sleeved in the desulfurizing tower body 1, the double-shaft motor 101 adopts the double-shaft motor, so that the use requirements of multi-direction output are met, two output ends of the double-shaft motor respectively penetrate through the top of the protective casing 102 and the bottom of the protective casing 102, a shaft sealing ring is nested at the sleeved position of the output end of the double-shaft motor and the protective casing 102, the sealing effect of structural connection is guaranteed, and the middle part of a transmission gear 11 is in transmission connection with the output end of the top of the double-shaft motor 101;
the inner side of the top of the hollow annular plate 7 is clamped with a hollow conical flow guide pipe 8, one end of the hollow conical flow guide pipe 8 is connected with the output end of the pumping device 5, a plurality of atomization pipe fittings 9 are arranged in the middle of the hollow annular plate 7, each of the plurality of atomization pipe fittings 9 comprises a square pipe 91, one end of each square pipe 91 is fixedly sleeved on the inner side of the middle of the hollow annular plate 7, at least two atomization spray heads 92 which are respectively output towards the top of the auxiliary annular plate 13 are sleeved at the bottom of the other end of each square pipe 91, and the auxiliary annular plate 13 is fixedly sleeved in the desulfurizing tower body 1;
the inner side of the auxiliary ring plate 13 is sleeved with a second annular sleeve frame 14 through a bearing, a first protection filter screen is nested in the second annular sleeve frame 14, and an assembly formed by the second annular sleeve frame 14 and the first protection filter screen in the second annular sleeve frame is positioned between the smoke input port 2 and the smoke output port 3.
The flue gas purification method with the participation of the dedusting and desulfurizing tower comprises the following operation steps:
S1, preprocessing smoke;
The flue gas generated by combustion carries a large amount of bed materials to turn through the furnace top, and enters two high-efficiency cyclone separators through two flue gas outlets positioned at the upper part of a water cooled wall of a rear wall for gas-solid separation, clean flue gas containing a small amount of fly ash after separation enters a furnace rear vertical shaft, a high-temperature superheater, a low-temperature superheater, a coal economizer and an air preheater which are arranged in the flue gas are subjected to heat release, and the unburned ashes of coarse particles separated by the high-efficiency cyclone separators directly enter a hearth along a material return device for recycling and re-burning to form a material recycling loop;
S2, primary purification of an electrostatic dust removal process;
The pretreated flue gas is conveyed to an electrostatic precipitator for electrostatic dust removal and purification treatment, and the electrostatic precipitator can be provided with activated carbon for adsorbing and removing dioxin in the flue gas;
s3, secondary purification of a cloth bag dust removal process;
Secondly, carrying out secondary dust removal on the primarily treated flue gas by a bag-type dust remover;
s4, purifying the dust removal desulfurization tower for three times;
The flue gas after secondary dust removal is taken out through current draught fan and is carried to flue gas input port 2, enter into desulfurizing tower body 1 inside through flue gas input port 2, simultaneously, start pumping device 5, pump pumping device 5 is with the inside purification liquid medicine pump delivery of liquid medicine case 4 to cavity toper honeycomb duct 8 in, and the lime stone thick liquid is selected for use to purification liquid medicine, then rethread cavity annular plate 7, a plurality of atomizing pipe fitting 9 carries out the atomizing diffusion, and then fully contact the reaction with the flue gas that enters into desulfurizing tower body 1 inside, reach purification and dust fall effect, and the dead angle of avoiding the contact appears, can be at cavity annular plate 7, a plurality of atomizing pipe fitting 9 output in-process, utilize power take off 10 transmission gear 11, make then transmission gear 11 and the meshing of internal gear ring 12 and transmission cavity annular plate 7 and a plurality of atomizing pipe fitting 9 carry out synchronous rotatory diffusion purification liquid medicine, avoid appearing purifying.
S5, four times of purification of the dedusting and desulfurizing tower;
Delivering the desulfurized flue gas into a wet electrostatic precipitator through a flue gas outlet 3 for further dedusting;
s6, discharging purified gas;
the flue gas after the final multiple purification can be discharged into an environmental atmosphere layer through the sleeve type glass fiber reinforced plastic wet chimney, so that the pollution to the environment is reduced.
Example two
Referring to fig. 1-6, a dedusting and desulfurizing tower comprises a desulfurizing tower body 1, wherein one side and the top of the bottom of the desulfurizing tower body 1 are respectively provided with a flue gas input port 2 and a flue gas output port 3, the other side of the bottom of the desulfurizing tower body 1 is provided with a pumping device 5 and a liquid medicine box 4, the pumping device 5 can convey purified liquid medicine in the liquid medicine box 4 into the desulfurizing tower body 1, an observation cylinder communicated with a space of the desulfurizing tower body 1 is fixedly sleeved on a front end structure of the desulfurizing tower body 1, and a transparent cover plate is arranged at a front end port of the observation cylinder through screws, so that the use condition of direct observation from the outside of the device is provided for a user while the whole device of the desulfurizing tower body 1 is maintained to be sealed;
The inside of the desulfurizing tower body 1 is sleeved with a first annular sleeve frame 6, a power output device 10 and an auxiliary annular plate 13, a supporting rod is arranged between the top of the power output device 10 and the bottom of the first annular sleeve frame 6, the inside of the first annular sleeve frame 6 is respectively sleeved with a hollow annular plate 7 through a bearing, a transmission gear 11 and an internal gear ring 12 are movably sleeved with the hollow annular plate, the transmission gear 11 and the internal gear ring 12 are in meshed transmission, the output end of the power output device 10 is in transmission connection with the middle part of the transmission gear 11, and the internal gear ring 12 is nested inside the bottom of the hollow annular plate 7;
The power output device 10 comprises a double-shaft motor 101 and a protective casing 102, wherein the protective casing 102 is sleeved on the outer side of the double-shaft motor 101, two ends of a supporting rod are respectively and fixedly connected to the top of the protective casing 102 and the bottom of a first annular sleeve frame 6, the first annular sleeve frame 6 is fixedly sleeved in the desulfurizing tower body 1, the double-shaft motor 101 adopts the double-shaft motor, so that the use requirements of multi-direction output are met, two output ends of the double-shaft motor respectively penetrate through the top of the protective casing 102 and the bottom of the protective casing 102, a shaft sealing ring is nested at the sleeved position of the output end of the double-shaft motor and the protective casing 102, the sealing effect of structural connection is guaranteed, and the middle part of a transmission gear 11 is in transmission connection with the output end of the top of the double-shaft motor 101;
the inner side of the top of the hollow annular plate 7 is clamped with a hollow conical flow guide pipe 8, one end of the hollow conical flow guide pipe 8 is connected with the output end of the pumping device 5, a plurality of atomization pipe fittings 9 are arranged in the middle of the hollow annular plate 7, each of the plurality of atomization pipe fittings 9 comprises a square pipe 91, one end of each square pipe 91 is fixedly sleeved on the inner side of the middle of the hollow annular plate 7, at least two atomization spray heads 92 which are respectively output towards the top of the auxiliary annular plate 13 are sleeved at the bottom of the other end of each square pipe 91, and the auxiliary annular plate 13 is fixedly sleeved in the desulfurizing tower body 1;
the inner side of the auxiliary ring plate 13 is sleeved with a second annular sleeve frame 14 through a bearing, a first protection filter screen is nested in the second annular sleeve frame 14, and an assembly formed by the second annular sleeve frame 14 and the first protection filter screen in the second annular sleeve frame is positioned between the flue gas input port 2 and the flue gas output port 3;
The cross section of the second annular sleeve frame 14 is of a V-shaped structure, the bottommost part of the inner structure of the second annular sleeve frame 14 is provided with a collecting component 17, the transition sleeve 171 comprises a transition sleeve 171 and a collecting cylinder 172, the top of the transition sleeve 171 is fixedly sleeved in the structure of the second annular sleeve frame 14 and is communicated with the space outside the top of the second annular sleeve frame 14, the inner side of the bottom of the transition sleeve 171 is in threaded connection with the top opening of the collecting cylinder 172, a second protection filter screen is nested in the inner wall of the collecting cylinder 172, the collecting component 17 can provide concentrated collecting conditions for impurities filtered by the second annular sleeve frame 14 and the first protection filter screen in the second annular sleeve frame 14, the subsequent replacement and cleaning are convenient, the continuous use effect of the whole device is maintained, a limit threaded hole is formed in the top of the auxiliary annular sleeve 13, a yield groove which can be aligned with the limit threaded hole is formed in the outer ring structure of the second annular sleeve frame 14, and the auxiliary annular sleeve 13 and the second annular sleeve frame 14 can be in threaded connection to the limit threaded hole through a screw for limit installation, so that the stability of the auxiliary annular sleeve 13 and the second annular sleeve frame 14 in the combined use process is ensured;
The output transmission of biax motor 101 bottom is connected with transition transmission shaft 15, the one end transmission of transition transmission shaft 15 is connected with and washs the subassembly 16, it comprises brush holder and a plurality of brush strip of fixed connection of brush holder bottom to wash the subassembly 16, the bottom homoenergetic of a plurality of brush strip corresponds the position movable contact at second annular cover frame 14 top, it can link transition transmission shaft 15 to wash the subassembly 16, power take off 10, then with the state of autogiration to the inside first protection filter screen of second annular cover frame 14 wash the brush, the buffer tank that runs through self has been seted up at the middle part of brush holder, reduce the resistance of follow-up rotatory in-process, and a plurality of brush strip all adopts rubber materials to make, avoid appearing the problem of wasing the fish tail.
The flue gas purification method with the participation of the dedusting and desulfurizing tower comprises the following operation steps:
S1, preprocessing smoke;
The flue gas generated by combustion carries a large amount of bed materials to turn through the furnace top, and enters two high-efficiency cyclone separators through two flue gas outlets positioned at the upper part of a water cooled wall of a rear wall for gas-solid separation, clean flue gas containing a small amount of fly ash after separation enters a furnace rear vertical shaft, a high-temperature superheater, a low-temperature superheater, a coal economizer and an air preheater which are arranged in the flue gas are subjected to heat release, and the unburned ashes of coarse particles separated by the high-efficiency cyclone separators directly enter a hearth along a material return device for recycling and re-burning to form a material recycling loop;
in the process of generating and primarily outputting the flue gas, reducing the NOx content in the flue gas by an SNCR-SCR combined denitration device, specifically, an SNCR system comprises the steps of receiving and storing a reducing agent, metering and outputting, mixing and diluting with water, injecting the diluted reducing agent at a proper position of a boiler, mixing the reducing agent with the flue gas, and carrying out denitration reaction;
The SCR system comprises an SCR bypass flue arranged at the rear side of a flue of the boiler economizer, an SCR catalyst and an ammonia water spray pipe are arranged, and flue gas returns to an inlet of a third group of the economizer of the boiler after passing through the SCR catalyst and the second group of the economizer;
S2, primary purification of an electrostatic dust removal process;
The pretreated flue gas is conveyed to an electrostatic precipitator for electrostatic dust removal and purification treatment, and the electrostatic precipitator can be provided with activated carbon for adsorbing and removing dioxin in the flue gas;
s3, secondary purification of a cloth bag dust removal process;
Secondly, carrying out secondary dust removal on the primarily treated flue gas by a bag-type dust remover;
s4, purifying the dust removal desulfurization tower for three times;
The flue gas after secondary dust removal is taken out through current draught fan and is carried to flue gas input port 2, enter into desulfurizing tower body 1 inside through flue gas input port 2, simultaneously, start pumping device 5, pump pumping device 5 is with the inside purification liquid medicine pump delivery of liquid medicine case 4 to cavity toper honeycomb duct 8 in, and the lime stone thick liquid is selected for use to purification liquid medicine, then rethread cavity annular plate 7, a plurality of atomizing pipe fitting 9 carries out the atomizing diffusion, and then fully contact the reaction with the flue gas that enters into desulfurizing tower body 1 inside, reach purification and dust fall effect, and the dead angle of avoiding the contact appears, can be at cavity annular plate 7, a plurality of atomizing pipe fitting 9 output in-process, utilize power take off 10 transmission gear 11, make then transmission gear 11 and the meshing of internal gear ring 12 and transmission cavity annular plate 7 and a plurality of atomizing pipe fitting 9 carry out synchronous rotatory diffusion purification liquid medicine, avoid appearing purifying.
S5, four times of purification of the dedusting and desulfurizing tower;
Delivering the desulfurized flue gas into a wet electrostatic precipitator through a flue gas outlet 3 for further dedusting;
s6, discharging purified gas;
The flue gas after the final multiple purification can be discharged into an environmental atmosphere layer through the sleeve type glass fiber reinforced plastic wet chimney, so that the pollution to the environment is reduced;
s7, automatically cleaning the inside of the desulfurizing tower body 1;
SO2 in the flue gas reacts with limestone slurry and generates gypsum and can be filtered by the inside first protection filter screen of second annular sleeve frame 14 and carry out temporary storage, and in order to avoid first protection filter screen to be stopped up, but after desulfurizing tower body 1 used for a certain time, start biax motor 101, drive the synchronous rotation of cleaning subassembly 16 through transition transmission shaft 15 by biax motor 101 corresponds the output of transition transmission shaft 15, then make cleaning subassembly 16 carry out the automatic cleaning to the top of second annular sleeve frame 14 and the inside top of first protection filter screen of second annular sleeve frame 14, then send the gypsum impurity main brush of first protection filter screen top to the inside of collecting vessel 172, transition sleeve 171 provides the transition passageway, thereby maintain the sustainable use effect of second annular sleeve frame 14 and its inside first protection filter screen.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The dust removal desulfurizing tower comprises a desulfurizing tower body (1), wherein one side and the top of the bottom of the desulfurizing tower body (1) are respectively provided with a flue gas input port (2) and a flue gas output port (3), the other side of the bottom of the desulfurizing tower body (1) is provided with a pumping device (5) and a liquid medicine box (4), and the pumping device (5) can convey purified liquid medicine in the liquid medicine box (4) to the inside of the desulfurizing tower body (1);
The desulfurization tower is characterized in that a first annular sleeve frame (6), a power output device (10) and an auxiliary annular plate (13) are sleeved in the desulfurization tower body (1), a supporting rod is arranged between the top of the power output device (10) and the bottom of the first annular sleeve frame (6), a hollow annular plate (7) is sleeved on the inner side of the first annular sleeve frame (6) through bearings respectively, a transmission gear (11) and an inner gear ring (12) are movably sleeved on the inner side of the first annular sleeve frame, the transmission gear (11) and the inner gear ring (12) are in meshed transmission, the output end of the power output device (10) is in transmission connection with the middle part of the transmission gear (11), the inner gear ring (12) is nested on the inner side of the bottom of the hollow annular plate (7), a hollow conical guide pipe (8) is clamped on the inner side of the top of the hollow annular plate (7), one end of the hollow conical guide pipe (8) is connected with the output end of the pumping device (5), and a plurality of atomization pipes (9) are arranged in the middle of the hollow annular plate (7);
The inner side of the auxiliary annular plate (13) is sleeved with a second annular sleeve frame (14) through a bearing, a first protection filter screen is nested in the second annular sleeve frame (14), and an assembly formed by the second annular sleeve frame (14) and the first protection filter screen in the second annular sleeve frame is located between the smoke input port (2) and the smoke output port (3).
2. The dedusting and desulfurizing tower according to claim 1, wherein the front end structure of the desulfurizing tower body (1) is fixedly sleeved with an observation cylinder communicated with the space of the desulfurizing tower body, and a transparent cover plate is arranged at the front end port of the observation cylinder through screws.
3. The dedusting and desulfurizing tower according to claim 1, wherein the power output device (10) comprises a double-shaft motor (101) and a protective sleeve (102), the protective sleeve (102) is sleeved on the outer side of the double-shaft motor (101), two ends of the supporting rod are respectively and fixedly connected to the top of the protective sleeve (102) and the bottom of the first annular sleeve frame (6), and the first annular sleeve frame (6) is fixedly sleeved in the desulfurizing tower body (1).
4. The dedusting and desulfurizing tower according to claim 3, wherein the double-shaft motor (101) is a double-shaft motor, two output ends of the double-shaft motor penetrate through the top of the protective casing (102) and the bottom of the protective casing (102) respectively, a shaft sealing ring is nested at the sleeving position of the output end of the double-shaft motor and the protective casing (102), and the middle part of the transmission gear (11) is in transmission connection with the output end at the top of the double-shaft motor (101).
5. The dedusting and desulfurizing tower according to claim 1, wherein the atomizing pipe fittings (9) comprise square pipes (91), one ends of the square pipes (91) are fixedly sleeved on the inner side of the middle of the hollow annular plate (7), the bottoms of the other ends of the square pipes (91) are sleeved with atomizing nozzles (92) which are not less than two in number and output towards the top of the auxiliary annular plate (13), and the auxiliary annular plate (13) is fixedly sleeved in the desulfurizing tower body (1).
6. The dedusting and desulfurizing tower according to claim 1, wherein the cross section of the second annular sleeve frame (14) is of a V-shaped structure, a collecting part (17) is arranged at the bottommost part of the inner structure of the second annular sleeve frame (14), the transition sleeve (171) comprises a transition sleeve (171) and a collecting cylinder (172), the top of the transition sleeve (171) is fixedly sleeved inside the structure of the second annular sleeve frame (14) and communicated with the space outside the top of the second annular sleeve frame (14), the inner side of the bottom of the transition sleeve (171) is in threaded connection with the top opening of the collecting cylinder (172), and a second protective filter screen is nested in the inner wall of the collecting cylinder (172).
7. The dedusting and desulfurizing tower according to claim 1, wherein the top of the auxiliary ring plate (13) is provided with a limit threaded hole, the outer ring structure of the second annular sleeve frame (14) is internally provided with a yielding groove which can be aligned with the limit threaded hole, and the auxiliary ring plate (13) and the second annular sleeve frame (14) can penetrate through the yielding groove through a screw and are connected to the limit threaded hole through the screw for limit installation.
8. The dedusting and desulfurizing tower according to claim 4, wherein the output end of the bottom of the double-shaft motor (101) is in transmission connection with a transition transmission shaft (15), one end of the transition transmission shaft (15) is in transmission connection with a cleaning assembly (16), the cleaning assembly (16) consists of a brush handle and a plurality of brush strips fixedly connected with the bottom of the brush handle, and the bottoms of the brush strips can be in movable contact with the corresponding positions of the top of the second annular sleeve frame (14).
9. The dedusting and desulfurizing tower according to claim 8, wherein the middle part of the brush handle is provided with a buffer groove penetrating through the brush handle, and the brush strips are made of rubber materials.
10. A flue gas cleaning method involving a dust removal desulfurization tower according to any one of claims 1 to 9, comprising the following steps:
S1, preprocessing smoke;
The flue gas generated by combustion carries a large amount of bed materials to turn through the furnace top, and enters two high-efficiency cyclone separators through two flue gas outlets positioned at the upper part of a water cooled wall of a rear wall for gas-solid separation, clean flue gas containing a small amount of fly ash after separation enters a furnace rear vertical shaft, a high-temperature superheater, a low-temperature superheater, a coal economizer and an air preheater which are arranged in the flue gas are subjected to heat release, and the unburned ashes of coarse particles separated by the high-efficiency cyclone separators directly enter a hearth along a material return device for recycling and re-burning to form a material recycling loop;
S2, primary purification of an electrostatic dust removal process;
The pretreated flue gas is conveyed to an electrostatic precipitator for electrostatic dust removal and purification treatment, and the electrostatic precipitator can be provided with activated carbon for adsorbing and removing dioxin in the flue gas;
s3, secondary purification of a cloth bag dust removal process;
Secondly, carrying out secondary dust removal on the primarily treated flue gas by a bag-type dust remover;
s4, purifying the dust removal desulfurization tower for three times;
The flue gas after secondary dust removal is pumped out through the existing induced draft fan and conveyed to the flue gas input port (2), enters the inside of the desulfurizing tower body (1) through the flue gas input port (2), meanwhile, a pumping device (5) is started, a purified liquid medicine pump in the liquid medicine box (4) is conveyed into the hollow conical guide pipe (8) through the pumping device (5), limestone slurry is selected for purifying the liquid medicine, then the limestone slurry is atomized and diffused through the hollow annular plate (7) and the plurality of atomizing pipe fittings (9), and then the limestone slurry fully contacts and reacts with the flue gas entering the inside of the desulfurizing tower body (1), so that the purifying and dust reducing effects are achieved, dead angles of contact are avoided, a power output device (10) is utilized to drive a transmission gear (11) in the output process of the hollow annular plate (7) and the plurality of atomizing pipe fittings (9), and then the transmission gear (11) is meshed with an internal gear ring (12) to drive the hollow annular plate (7) and the plurality of atomizing pipe fittings (9) to conduct synchronous rotation diffusion purification, and the purifying dead angles are avoided;
S5, four times of purification of the dedusting and desulfurizing tower;
Delivering the desulfurized flue gas into a wet electrostatic precipitator through a flue gas outlet (3) for further dedusting;
s6, discharging purified gas;
the flue gas after the final multiple purification can be discharged into an environmental atmosphere layer through the sleeve type glass fiber reinforced plastic wet chimney, so that the pollution to the environment is reduced.
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Cited By (1)
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