CN114251670A - Hazardous waste incineration fly ash fused salt and flue gas treatment device - Google Patents

Hazardous waste incineration fly ash fused salt and flue gas treatment device Download PDF

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Publication number
CN114251670A
CN114251670A CN202111560152.3A CN202111560152A CN114251670A CN 114251670 A CN114251670 A CN 114251670A CN 202111560152 A CN202111560152 A CN 202111560152A CN 114251670 A CN114251670 A CN 114251670A
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China
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flue gas
pipe
steam
gas treatment
water
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CN202111560152.3A
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CN114251670B (en
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陶经坚
程强祥
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Shanghai Yude Environmental Protection Co ltd
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Shanghai Yude Environment Protection Engineering Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44Details; Accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44Details; Accessories
    • F23G5/46Recuperation of heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24VCOLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V30/00Apparatus or devices using heat produced by exothermal chemical reactions other than combustion

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a hazardous waste incineration fly ash fused salt and flue gas treatment device, which comprises a reaction tank, a flue gas treatment tank and a flue gas pipe, wherein a steam turbine is installed at the upper end of the reaction tank, a steam collecting pipe is installed at the upper end of the flue gas treatment tank, a first steam booster pump is installed between the reaction tank and the flue gas treatment tank, a first connecting pipe is connected between a steam inlet of the steam turbine and a steam outlet of the first steam booster pump, a steam outlet of the steam collecting pipe is connected with a steam inlet of the first steam booster pump, the reaction tank is communicated with the flue gas treatment tank through the flue gas pipe, and the fly ash fused salt is uniformly stirred by a stirring structure in the device so as to be fully dissolved, and potential heat energy generated by fly ash fused salt reaction is skillfully converted into kinetic energy to effectively utilize resources generated by flue gas treatment.

Description

Hazardous waste incineration fly ash fused salt and flue gas treatment device
Technical Field
The invention relates to the technical field of hazardous waste incineration fly ash treatment, in particular to a hazardous waste incineration fly ash molten salt and flue gas treatment device.
Background
The fly ash generated by the incineration of the hazardous waste is rich in heavy metal, dioxin and other pollution hazardous solid wastes, and the fly ash generated by the incineration of the hazardous waste in China is mainly treated by solid-phone landfill at present. However, the solidified fly ash has obvious problems of capacity increase and weight increase, a large amount of valuable land resources are wasted, and meanwhile, the resources such as rich metals in the fly ash cannot be recycled.
The existing fused salt treatment method for the fly ash generated by burning the hazardous wastes is a novel fly ash treatment technology, the fused salt can enrich and recover chloride, sulfate and partial heavy metals in the fly ash, the fused salt after heat treatment can be recycled, meanwhile, the volume of the fly ash slag is reduced, and the leaching toxicity is further reduced, so that the fly ash can be safely buried or recycled in the field of building materials.
The method for treating the fly ash generated by burning the hazardous waste by using molten salt has many advantages in theory, but the method also has the following problems in the practical application process as a new technology: in the fly ash molten salt treatment process, because the density of fly ash is different from that of molten salt, partial components of fly ash can not be fully dissolved and molten salt is not beneficial to dissolution and recovery of the components of fly ash;
potential heat generated in the reaction process of the fly ash and the molten salt needs to be further recycled, and gas generated in the reaction process needs to be further treated.
Disclosure of Invention
The invention aims to provide a hazardous waste incineration fly ash molten salt and flue gas treatment device to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a fused salt and flue gas treatment device for hazardous waste incineration fly ash comprises a reaction tank, a flue gas treatment tank and a flue gas pipe, wherein a steam turbine is installed at the upper end of the reaction tank, a steam collection pipe is installed at the upper end of the flue gas treatment tank, the steam collection pipe is communicated with the inside of the flue gas treatment tank, a first steam booster pump is installed between the reaction tank and the flue gas treatment tank, a first connecting pipe is connected between a steam inlet of the steam turbine and a steam outlet of the first steam booster pump, a steam outlet of the steam collection pipe is connected with a steam inlet pipeline of the first steam booster pump, the reaction tank is communicated with the flue gas treatment tank through the flue gas pipe, fused salt fly ash is uniformly stirred through a stirring structure in the device, so that the fused salt fly ash is fully dissolved, and potential heat energy generated by fly ash fused salt reaction is skillfully converted into kinetic energy, the waste water generated by flue gas treatment is effectively recycled.
As a preferred technical scheme, a salt feeding port is arranged on one side of the reaction tank, an ash feeding port is arranged on one side of the lower end of the reaction tank, a one-way valve is arranged in the ash feeding port, the ash feeding port is arranged at the lower end of the reaction tank due to upward movement of high-temperature smoke gas, so that high-temperature fly ash generated by incineration of hazardous waste is more easily melted into molten salt for dissolution, a first water collecting cabin is arranged on the outer wall of the reaction tank, a water filling port is arranged on the first water collecting cabin, a slag outlet is arranged at the lower end of the reaction tank, and the temperature of the tank wall of the reaction tank is increased due to high temperature generated by thermal reaction of the fly ash molten salt, so that the first water collecting cabin arranged outside the tank wall absorbs heat, water in the tank is heated to provide energy consumption resources for subsequent energy components, and potential heat energy generated by the thermal reaction of the fly ash molten salt is utilized.
As a preferred technical scheme, a first clapboard and a second clapboard are arranged in the flue gas treatment tank, a second water collecting cabin is formed between the first clapboard and the flue gas treatment tank, the second water collecting cabin is communicated with a steam inlet pipeline of a steam collecting pipe, the second clapboard, the first clapboard and the flue gas treatment tank are mutually matched to form a flue gas combustion chamber, a second water pipe and a combustion improver are arranged outside the flue gas treatment tank, a water outlet of the second water pipe is communicated with the second water collecting cabin, the combustion improver is communicated with the flue gas combustion chamber, a water pump is arranged at a water inlet of the second water pipe, a first water pipe is arranged at a water pump position of the water pump, a water inlet of the first water pipe is communicated with the first water collecting cabin, heated water in the first water collecting cabin is extracted by the water pump and is conveyed to the second water collecting cabin, and at the moment, the water in the second water collecting cabin is in a high-temperature state, because the fly ash fused salt thermal reaction in the retort produces high temperature, high temperature leads to the vaporization evaporation of the solution in the fly ash fused salt, the solution of evaporation is with the fine harmful particle that the fused salt surface was not fully dissolved, impurity etc. flow into the flue gas combustion chamber through the tobacco pipe, the rethread combustion-supporting ware is carried combustion improver in to the flue gas combustion chamber, make the interior fine particle of flue gas combustion chamber, impurity etc. carry out the postcombustion, the heat that the burning produced heats the water in the second sump tank once more, in order to produce more hot steam, hot steam is carried first steam booster pump through the steam trap, carry for the steam turbine through first connecting pipe after the pressurization by first steam booster pump, make the steam turbine operation, the steam turbine operation drives the axostylus axostyle rotation.
As preferred technical scheme, the logical mouth of cigarette has been seted up between second baffle and the flue gas treatment jar wall, gun barrel is installed to the lower extreme of second baffle, gun barrel's water jet is located logical mouth of cigarette department, gun barrel's water inlet and second water pipe intercommunication, the solenoid valve is installed to the junction of gun barrel and second water pipe, sprays the exhaust flue gas after the burning through gun barrel to the interception is not filtered by the tiny particle impurity of abundant burning, so that follow-up filter assembly filters the gas after the burning is handled.
As a preferred technical scheme, a plurality of third clapboards are sequentially arranged below the spray gun barrel, a plurality of high-efficiency filter screens are arranged between every two adjacent third clapboards, the lower end of the flue gas treatment tank is respectively provided with a sewage discharge outlet and a water outlet pipe, a water outlet of the water outlet pipe is provided with a third water pipe, a water inlet of the third water pipe is communicated with the first water pipe, a second electromagnetic valve is arranged at the joint of the third water pipe and the first water pipe, a smoke outlet is arranged at one side of the flue gas treatment tank, the third clapboards are installed intermittently, the stroke of the gas cleaned by water mist in the flue gas treatment tank is increased, the gas is filtered by the high-efficiency filter screens, the filtered gas is introduced into subsequent purification equipment through the smoke outlet to continue filtering treatment, and the water sprayed by the spray gun barrel flows into the water outlet pipe after being filtered by the high-efficiency filter screens, and the water in the water outlet pipe is pumped by the water pump through the third water pipe again for recycling.
As a preferred technical scheme, the inner wall of the reaction tank is provided with an annular groove which is wavy, a rack is arranged in the annular groove and is engaged and connected with a gear, the fly ash and the molten salt cannot be sufficiently contacted and dissolved due to density difference, the gear regularly and circularly moves up and down along with the wavy annular groove through a running track of the wavy rack so as to drive a subsequent stirring component to uniformly stir the reactant in multiple directions to improve the dissolving efficiency of the reactant, the gear is provided with a first universal joint shaft which is fixedly connected with the gear, an output shaft of the steam turbine is provided with a shaft rod which is positioned in the reaction tank, the lower part of the shaft rod is provided with a helical blade, the surface of the helical blade is uniformly distributed with a plurality of electric heating wires, and the reactant in the reaction tank is heated through the electric heating wires on the helical blade, the shaft lever rotates to drive the helical blade to rotate, so that the helical blade circularly overturns the fly ash molten salt reactant at the bottom of the reaction tank to the upper part to achieve the effect of uniformly heating the reactant, a second universal joint shaft is mounted on the shaft lever and is rotatably connected with the second universal joint shaft, a round rod is arranged between the first universal joint shaft and the second universal joint shaft, and the round rod can flexibly rotate along with the annular wavy running track through the arranged first universal joint shaft and the second universal joint shaft.
As preferred technical scheme, first connecting block is installed to the one end of first universal joint axle, the second connecting block is installed to the one end of second universal joint axle, install the spring between first connecting block and the second connecting block, the surface of first connecting block and second connecting block is located to the round bar cover, just the inner wall sliding connection of first connecting block and round bar because the gear is wave fluctuation motion on the rack of wavy ring channel, through first connecting block, spring, the second connecting block that sets up to realize the gear and keep the meshing with the rack and be connected under the spring concertina movement.
As a preferred technical scheme, the outer surface of the round rod is provided with a mounting pipe, a pipe groove is formed in the mounting pipe, a plurality of blades are mounted on the mounting pipe and are rotationally connected with the mounting pipe, a third connecting pipe and a second steam booster pump are arranged in the shaft rod, a second connecting pipe is connected between a steam inlet of the third connecting pipe and a steam outlet of the steam turbine, the third connecting pipe penetrates through a second universal joint shaft and is connected with the steam inlet of the mounting pipe, a one-way valve is arranged at the steam outlet of the pipe groove, steam discharged by the steam turbine is recycled to the third connecting pipe through the arranged second connecting pipe, the recycled hot steam is pressurized by the second steam booster pump and is conveyed into the pipe groove of the mounting pipe so as to push a plurality of blades of the mounting pipe to operate, reactants are fully stirred, and the pipe wall of the mounting pipe is heated by hot steam circulation, make the installation pipe also play diversified effect of heating the reactant when playing diversified stirring reactant, the steam in the tube seat is discharged by the check valve again and is heated the reactant once more.
As the preferred technical scheme, per two be connected with the pivot between the blade, the pivot runs through the installation pipe and extends to both sides, be provided with the guide plate in the tube seat, install the impeller in the pivot, the impeller is located the tube seat of installation pipe, and the hot steam of tube seat promotes a plurality of impellers that are located the tube seat and rotate under the effect of guide plate, and the impeller rotates and drives the pivot and rotate, and the pivot drives the blade rotation again to carry out more even stirring to the reactant.
According to a preferable technical scheme, a liquid level meter is arranged on the inner wall of the reaction tank and is used for detecting the liquid level of the molten salt.
Compared with the prior art, the invention has the following beneficial effects:
1. this device utilizes the first water collecting tank that sets up outside the jar wall to absorb heat high temperature tank wall to water to the under-deck heats and provides the energy consumption resource for subsequent energy component, utilized the produced latent heat energy of flying ash fused salt thermal reaction, through the wavy rack orbit of operation that sets up, the gear is regular circulation rolling motion along with the wavy ring channel, can carry out diversified even stirring to the reactant in order to play the follow-up stirring subassembly that drives, in order to improve the dissolution efficiency of reactant.
2. Recycle steam turbine exhaust steam to third connecting pipe through the second connecting pipe that sets up, rethread second steam booster pump carries out the pressure boost to recycle's hot steam and carries the tube seat of installation pipe, operate with a plurality of blades that promote the installation pipe, carry out intensive mixing to the reactant, and hot steam circulation heats the pipe wall of installation pipe, make the installation pipe also play diversified effect of heating the reactant when playing diversified stirring reactant, the steam of tube seat is discharged by the check valve again and is heated the reactant once more.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a first three-dimensional structure of a hazardous waste incineration fly ash molten salt and flue gas treatment device of the present invention;
FIG. 2 is a schematic diagram of a second perspective structure of the hazardous waste incineration fly ash molten salt and flue gas treatment device of the present invention;
FIG. 3 is a schematic diagram of a first perspective cross-sectional structure of a hazardous waste incineration fly ash molten salt and flue gas treatment device according to the present invention;
FIG. 4 is an enlarged schematic structural diagram of the position A in FIG. 3 of the hazardous waste incineration fly ash molten salt and flue gas treatment device of the present invention;
FIG. 5 is a schematic diagram of a second perspective cross-sectional structure of the hazardous waste incineration fly ash molten salt and flue gas treatment device of the present invention;
FIG. 6 is an enlarged schematic structural diagram of the treatment device for fused salt and flue gas of incineration fly ash of hazardous waste in FIG. 5 at B;
FIG. 7 is a schematic diagram of a third perspective cross-sectional structure of a hazardous waste incineration fly ash molten salt and flue gas treatment device of the present invention;
in the figure: 1. a reaction tank; 101. a first sump compartment; 102. a water injection port; 103. a salt feeding port; 104. an ash feeding port; 105. a slag outlet; 106. a liquid level meter; 2. a flue gas treatment tank; 201. a combustion-supporting device; 202. a smoke outlet; 203. a sewage draining outlet; 204. a water outlet pipe; 3. a steam turbine; 301. a shaft lever; 302. a helical blade; 303. a third connecting pipe; 304. a second steam booster pump; 4. a first connecting pipe; 5. a first steam booster pump; 6. a steam collecting pipe; 7. a smoke pipe; 8. a first water pipe; 9. a second water pipe; 901. an electromagnetic valve; 902. a water lance tube; 10. a third water pipe; 11. a water pump; 12. a second connecting pipe; 13. a first separator; 14. a second separator; 15. a third partition plate; 16. a high-efficiency filter screen; 17. a rack; 18. a round bar; 181. a first connection block; 182. a spring; 183. a second connecting block; 19. a first gimbal shaft; 20. a second universal joint shaft; 21. a gear; 22. installing a pipe; 23. a blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides the following technical solutions:
the incineration fly ash fused salt and flue gas treatment device comprises a reaction tank 1, a flue gas treatment tank 2 and a flue gas pipe 7, wherein a steam turbine 3 is installed at the upper end of the reaction tank 1, a steam collecting pipe 6 is installed at the upper end of the flue gas treatment tank 2, the steam collecting pipe 6 is communicated with the interior of the flue gas treatment tank 2, a first steam booster pump 5 is installed between the reaction tank 1 and the flue gas treatment tank 2, a first connecting pipe 4 is connected between a steam inlet of the steam turbine 3 and a steam outlet of the first steam booster pump 5, the steam outlet of the steam collecting pipe 6 is connected with a steam inlet pipeline of the first steam booster pump 5, the reaction tank 1 is communicated with the flue gas treatment tank 2 through the flue gas pipe 7, flue gas generated by fly ash fused salt in the reaction tank 1 is introduced into the flue gas treatment tank 2 for purification treatment, the fused salt fly ash is uniformly stirred by a stirring structure in the device to be fully dissolved, and potential heat energy generated by fused salt fly ash reaction is ingeniously converted into kinetic energy, the waste water generated by flue gas treatment is effectively recycled.
Referring to fig. 1-3, specifically, a salt feeding port 103 is arranged on one side of a reaction tank 1, an ash feeding port 104 is arranged on one side of the lower end of the reaction tank 1, a one-way valve is arranged in the ash feeding port 104, the ash feeding port 104 is arranged at the lower end of the reaction tank to enable high-temperature fly ash generated by burning hazardous waste to be easily melted into molten salt for dissolution due to upward movement of high-temperature smoke gas, a first water collecting tank 101 is arranged on the outer wall of the reaction tank 1, a water filling port 102 is arranged on the first water collecting tank 101, a slag outlet 105 is arranged at the lower end of the reaction tank 1, a liquid level meter 106 is arranged on the inner wall of the reaction tank 1 and detects the liquid level of the molten salt, the temperature of the tank wall of the reaction tank 1 is increased due to high temperature generated by thermal reaction of the molten salt of the fly ash, the first water collecting tank 101 arranged outside the tank wall is used for absorbing heat from the high-temperature tank wall, so as to heat water in the tank to provide energy consumption resources for subsequent energy components, the potential heat energy generated by the fly ash molten salt thermal reaction is utilized.
Referring to fig. 1-3 specifically, a first partition plate 13 and a second partition plate 14 are arranged in a flue gas treatment tank 2, a second water collecting cabin is formed between the first partition plate 13 and the flue gas treatment tank 2, a first partition plate 13 is connected between the second water collecting cabin and a flue gas combustion chamber, the second water collecting cabin is communicated with a steam inlet pipeline of a steam collecting pipe 6, the second partition plate 14, the first partition plate 13 and the flue gas treatment tank 2 are matched with each other to form the flue gas combustion chamber, a second water pipe 9 and a combustion supporting device 201 are arranged outside the flue gas treatment tank 2, a water outlet of the second water pipe 9 is communicated with the second water collecting cabin, the combustion supporting device 201 is communicated with the flue gas combustion chamber, a water inlet of the second water pipe 9 is provided with a water pump 11, a water pump 8 is arranged at a water pumping hole of the water pump 11, a water inlet of the first water pipe 8 is communicated with the first water collecting cabin 101, heated water in the first water collecting cabin 101 is extracted by the water pump 11, the fly ash molten salt in the reaction tank 1 is thermally reacted to generate high temperature, the high temperature causes the solution in the fly ash molten salt to vaporize and evaporate, the evaporated solution enables fine harmful particles and impurities on the surface of the molten salt not fully dissolved to flow into the flue gas combustion chamber through the smoke pipe 7, the combustion improver is conveyed into the flue gas combustion chamber through the combustion improver 201, the fine particles and the impurities in the flue gas combustion chamber are combusted for the second time, the heat generated by combustion heats the water in the second water collection chamber again to generate more hot steam, the hot steam is conveyed to the first steam booster pump 5 through the steam collection pipe 6, the hot steam is conveyed to the steam turbine 3 through the first connection pipe 4 after being pressurized by the first steam booster pump 5, the steam turbine 3 operates, and the steam turbine 3 operates to drive the shaft lever 301 to rotate.
Referring to fig. 1-2 and 7, a second partition plate 14 is disposed at the lower end of the flue gas combustion chamber, a smoke through port is disposed between the second partition plate 14 and the tank wall of the flue gas treatment tank 2, a spray gun pipe 902 is mounted at the lower end of the second partition plate 14, a water spray port of the spray gun pipe 902 is located at the smoke through port, a water inlet of the spray gun pipe 902 is communicated with a second water pipe 9, an electromagnetic valve 901 is mounted at the joint of the spray gun pipe 902 and the second water pipe 9, and the spray gun pipe 902 sprays the discharged flue gas after combustion to intercept fine particle impurities which are not sufficiently combusted, so that the subsequent filter assembly filters the gas impurities after combustion treatment.
Referring to fig. 1-3, a plurality of third partition plates 15 are sequentially arranged below the water spray gun barrel 902, a plurality of efficient filter screens 16 are arranged between every two adjacent third partition plates 15, a sewage discharge port 203 and a water outlet pipe 204 are respectively arranged at the lower end of the flue gas treatment tank 2, a third water pipe 10 is arranged at the water outlet of the water outlet pipe 204, the water inlet of the third water pipe 10 is communicated with the first water pipe 8, a second electromagnetic valve is arranged at the joint of the third water pipe 10 and the first water pipe 8, a flue gas outlet 202 is arranged at one side of the flue gas treatment tank 2, the plurality of third partition plates 15 are intermittently arranged, the stroke of the gas cleaned by water mist in the flue gas treatment tank 2 is increased, the gas and the like are filtered by matching with the plurality of efficient filter screens 16, the filtered gas is introduced into subsequent purification equipment through the flue gas outlet 202 for continuous filtering treatment, the water sprayed from the water spray gun barrel 902 flows into the water outlet pipe 204 after being filtered by the plurality of efficient filter screens 16, the water in the water outlet pipe 204 is pumped by the water pump 11 through the third water pipe 10 again for recycling.
Referring to fig. 3-4, an annular groove is formed in an inner wall of the reaction tank 1, the annular groove is wavy, a rack 17 is disposed in the annular groove, a gear 21 is engaged with the rack 17, the fly ash and the molten salt cannot be sufficiently dissolved due to density difference therebetween, the gear 21 regularly and cyclically moves along with the wavy annular groove through a running track of the wavy rack 17 to drive a subsequent stirring assembly to uniformly stir the reactant in multiple directions, so as to improve the dissolving efficiency of the reactant, a first universal joint 19 is disposed on the gear 21, the gear 21 is fixedly connected with the first universal joint 19, a shaft 301 is disposed on an output shaft of the steam turbine 3, the shaft 301 is located inside the reaction tank 1, a helical blade 302 is disposed on a lower portion of the shaft 301, a plurality of heating wires are uniformly distributed on a surface of the helical blade 302, the reactant in the reaction tank 1 is heated by the heating wires on the helical blade 302, the shaft lever 301 rotates to drive the helical blade 302 to rotate, so that the helical blade 302 circularly overturns the fly ash molten salt reactant at the bottom of the reaction tank 1 to the upper part, and the effect of uniformly heating the reactant is achieved;
the second universal joint shaft 20 is installed on the shaft rod 301, the shaft rod 301 is rotatably connected with the second universal joint shaft 20, the round rod 18 is arranged between the first universal joint shaft 19 and the second universal joint shaft 20, and the round rod 18 can flexibly run along with the annular wavy running track through the arranged first universal joint shaft 19 and the second universal joint shaft 20.
Specifically referring to fig. 6, a first connecting block 181 is installed at one end of the first universal joint shaft 19, a second connecting block 183 is installed at one end of the second universal joint shaft 20, a spring 182 is installed between the first connecting block 181 and the second connecting block 183, the round rod 18 is sleeved on the surfaces of the first connecting block 181 and the second connecting block 183, and the first connecting block 181 is slidably connected with the inner wall of the round rod 18, because the gear 21 makes a wave motion on the rack 17 in the wave-shaped annular groove, the gear 21 is kept engaged with the rack 17 under the telescopic action of the spring 182 through the first connecting block 181, the spring 182, and the second connecting block 183.
Referring to fig. 4-6 specifically, an installation tube 22 is installed on the outer surface of the round rod 18, a tube slot is formed in the installation tube 22, a plurality of blades 23 are installed on the installation tube 22, the blades 23 are rotatably connected with the installation tube 22, a rotating shaft is connected between every two blades 23, the rotating shaft penetrates through the installation tube 22 and extends towards two sides, a guide plate is arranged in the tube slot, an impeller is installed on the rotating shaft, the impeller is located in the tube slot of the installation tube 22, hot steam in the tube slot pushes the impellers located in the tube slot to rotate under the action of the guide plate, the impeller rotates to drive the rotating shaft to rotate, and the rotating shaft drives the blades to rotate, so that reactants are stirred more uniformly;
a third connecting pipe 303 and a second steam booster pump 304 are arranged in the shaft lever 301, a second connecting pipe 12 is connected between a steam inlet of the third connecting pipe 303 and a steam outlet of the steam turbine 3, the third connecting pipe 303 penetrates through the second universal joint shaft 20 to be connected with a steam inlet of the mounting pipe 22, a one-way valve is arranged at a steam outlet of the pipe groove, the steam discharged from the steam turbine 3 is recycled to the third connecting pipe 303 through the second connecting pipe 12, and the recycled hot steam is pressurized and conveyed to the pipe groove of the installation pipe 22 through the second steam pressurizing pump 304 to push the blades 23 of the installation pipe 22 to operate, the reactants are fully stirred, and the hot steam flows to heat the pipe wall of the installation pipe 22, so that the installation pipe 22 can stir the reactant in multiple directions and heat the reactant in multiple directions, and the steam in the pipe groove is discharged through the one-way valve to heat the reactant again.
The working principle of the invention is as follows: firstly adding a proper amount of industrial salt into a reaction tank 1, heating the industrial salt in the tank by an electric heating wire on a spiral blade 302 through a PLC (programmable logic controller), then adding water into a first water collecting cabin 101 through a water injection port 102, when the solid industrial salt is heated to a molten salt state, introducing fly ash into the bottom of the molten salt through an ash conveying port 104, raising the temperature of the tank wall of the reaction tank 1 along with the rise of the temperature due to the high temperature generated by the molten salt thermal reaction of the fly ash, absorbing heat generated by the reaction and heating the water by utilizing a first water collecting cabin 101 arranged outside the tank wall, extracting the water heated in the first water collecting cabin 101 through a water pump 11, conveying the water to a second water collecting cabin, wherein the water in the second water collecting cabin is also in a high temperature state, and the high temperature is generated by the molten salt thermal reaction of the fly ash in the reaction tank 1, so that the high temperature causes the evaporation of the solution in the molten salt fly ash, and the evaporated solution vaporizes the fine harmful particles, the surface of the molten salt of which is not fully dissolved, Impurities and the like flow into the flue gas combustion chamber through the smoke pipe 7, then the combustion improver is conveyed into the flue gas combustion chamber through the combustion improver 201, so that fine particles, impurities and the like in the flue gas combustion chamber are combusted secondarily, the water in the second water collecting cabin is heated again by the heat generated by combustion to generate more hot steam, the hot steam is conveyed to the first steam booster pump 5 through the steam collecting pipe 6, and is conveyed to the steam turbine 3 through the first connecting pipe 4 after being boosted by the first steam booster pump 5, so that the steam turbine 3 operates, and the steam turbine 3 operates to drive the shaft lever 301 to rotate;
through the rack 17 arranged on the wavy annular groove, when the steam turbine 3 drives the shaft lever 301 to rotate, the shaft lever 301 drives the second universal joint shaft 20, the second universal joint shaft 20 drives the round rod 18, the round rod 18 drives the first universal joint shaft 19, the first universal joint shaft 19 drives the gear 21 to rotate, at the moment, the gear 21 regularly and circularly fluctuates along with the wavy annular groove, the gear 21 drives the round rod 18 to rotate, the round rod 18 drives the installation pipe 22 to rotate, and the fly ash and the fused salt are uniformly stirred in multiple directions, so that the dissolving efficiency of the fly ash and the fused salt is improved;
the steam exhausted by the steam turbine 3 is recycled to the third connecting pipe 303 through the second connecting pipe 12, the recycled hot steam is pressurized by the second steam booster pump 304 and conveyed into the pipe groove of the mounting pipe 22, the hot steam in the pipe groove pushes a plurality of impellers in the pipe groove to rotate under the action of the guide plate, the impellers rotate to drive the rotating shaft to rotate, and the rotating shaft drives the blades to rotate, so that the reactants are stirred more uniformly, and the pipe wall of the mounting pipe 22 is heated through hot steam circulation, so that the mounting pipe 22 can stir the reactants in multiple directions and heat the reactants in multiple directions, and the steam in the pipe groove is exhausted by the check valve to heat the reactants again;
carry out atomization treatment through spray gun pipe 902 to the flue gas body after the burning, the third baffle 15 of a plurality of intermittent type formula installations makes the stroke of gas in flue gas treatment tank 2 after being handled by water smoke cleaning increase, it filters gas to cooperate a plurality of high-efficient filter screens 16 again, gas after the filtration lets in subsequent clarification plant by the outlet flue again and continues filtration treatment, spray gun pipe 902 spun water flows into outlet pipe 204 after a plurality of high-efficient filter screens 16 filter, water in outlet pipe 204 is retrieved by the extraction of water pump 11 through third water pipe 10 once more.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a hazardous waste incineration flying ash fused salt and flue gas processing apparatus which characterized in that: the incineration fly ash molten salt and flue gas treatment device comprises a reaction tank (1), a flue gas treatment tank (2) and a flue pipe (7), the upper end of the reaction tank (1) is provided with a steam turbine (3), the upper end of the flue gas treatment tank (2) is provided with a steam collecting pipe (6), the steam collecting pipe (6) is communicated with the interior of the flue gas treatment tank (2), a first steam booster pump (5) is arranged between the reaction tank (1) and the flue gas treatment tank (2), a first connecting pipe (4) is connected between the steam inlet of the steam turbine (3) and the steam outlet of the first steam booster pump (5), the steam outlet of the steam collecting pipe (6) is connected with the steam inlet pipeline of the first steam booster pump (5), the reaction tank (1) is communicated with the flue gas treatment tank (2) through a flue pipe (7), and the flue gas generated by the fly ash molten salt in the reaction tank (1) is introduced into a flue gas treatment tank (2) for purification treatment.
2. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 1, wherein: one side of retort (1) is provided with and send salt mouth (103), lower extreme one side of retort (1) is installed and is sent ash hole (104), send and be provided with the check valve in ash hole (104), the outer wall of retort (1) is provided with first sump tank (101), be provided with water filling port (102) on first sump tank (101), slag notch (105) are installed to the lower extreme of retort (1).
3. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 2, wherein: a first clapboard (13) and a second clapboard (14) are arranged in the flue gas treatment tank (2), a second water collecting cabin is formed between the first clapboard (13) and the smoke processing tank (2), the second water collecting cabin is communicated with a steam inlet pipeline of the steam collecting pipe (6), the second clapboard (14), the first clapboard (13) and the flue gas treatment tank (2) are mutually matched to form a flue gas combustion chamber, a second water pipe (9) and a combustion-supporting device (201) are arranged outside the flue gas treatment tank (2), the water outlet of the second water pipe (9) is communicated with a second water collecting cabin, the combustion-supporting device (201) is communicated with a flue gas combustion chamber, a water inlet of the second water pipe (9) is provided with a water pump (11), a water pump outlet of the water pump (11) is provided with a first water pipe (8), the water inlet of the first water pipe (8) is communicated with the first water collecting cabin (101).
4. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 3, wherein: the utility model discloses a flue gas treatment tank, including second baffle (14), spray gun pipe (902), the water jet of spray gun pipe (902) is located logical mouth of a chimney department, the water inlet and the second water pipe (9) intercommunication of spray gun pipe (902), solenoid valve (901) are installed to the junction of spray gun pipe (902) and second water pipe (9).
5. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 4, wherein: the below of spray gun barrel (902) has set gradually a plurality of third baffles (15), and is per two adjacent install a plurality of high-efficient filter screens (16) between third baffle (15), the lower extreme of flue gas treatment tank (2) is provided with drain (203) and outlet pipe (204) respectively, the water outlet department of outlet pipe (204) is provided with third water pipe (10), the water inlet and first water pipe (8) the intercommunication of third water pipe (10), and the junction of third water pipe (10) and first water pipe (8) is provided with the second solenoid valve, outlet (202) are installed to one side of flue gas treatment tank (2).
6. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 5, wherein: the inner wall of retort (1) has been seted up the ring channel, the ring channel is wavy, be provided with rack (17) in the ring channel, the meshing is connected with gear (21) on rack (17), be provided with first universal joint axle (19) on gear (21), be provided with axostylus axostyle (301) on the output shaft of steam turbine (3), axostylus axostyle (301) are located retort (1) inside, helical blade (302) are installed to the lower part of axostylus axostyle (301), helical blade (302) surface evenly distributed has a plurality of heating wires, install second universal joint axle (20) on axostylus axostyle (301), be provided with round bar (18) between first universal joint axle (19) and second universal joint axle (20).
7. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 6, wherein: first connecting block (181) is installed to the one end of first universal joint axle (19), second connecting block (183) is installed to the one end of second universal joint axle (20), install spring (182) between first connecting block (181) and second connecting block (183), the surface of first connecting block (181) and second connecting block (183) is located to round bar (18) cover, first connecting block (181) slides in the telescopic of round bar (18).
8. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 7, wherein: the surface mounting of pole (18) has installation pipe (22), the chase has been seted up in installation pipe (22), install a plurality of blades (23) on installation pipe (22), and a plurality of blade (23) are rotated with installation pipe (22) and are connected, be provided with third connecting pipe (303) and second steam booster pump (304) in axostylus axostyle (301), be connected with second connecting pipe (12) between the steam inlet of third connecting pipe (303) and the play steam port of steam turbine (3), third connecting pipe (303) run through second universal joint axle (20) and are connected with the steam inlet of installation pipe (22), chase steam outlet department is provided with the check valve.
9. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 8, wherein: every two be connected with the pivot between blade (23), the pivot runs through installation pipe (22) and extends to both sides, be provided with the guide plate in the tube seat, install the impeller in the pivot, the impeller is located the tube seat of installation pipe (22), the guide plate is located one side of impeller.
10. The hazardous waste incineration fly ash molten salt and flue gas treatment device according to claim 9, wherein: the inner wall of the reaction tank (1) is provided with a liquid level meter (106), and the liquid level meter (106) detects the liquid level of the molten salt.
CN202111560152.3A 2021-12-20 2021-12-20 Dangerous waste incineration fly ash fused salt and flue gas treatment device Active CN114251670B (en)

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CN116748263B (en) * 2023-06-06 2024-01-23 中节能兆盛环保有限公司 Continuous mixing and solidifying device for fly ash of garbage incinerator

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