CN112161275A - Primary garbage incineration system - Google Patents
Primary garbage incineration system Download PDFInfo
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- CN112161275A CN112161275A CN202011156848.5A CN202011156848A CN112161275A CN 112161275 A CN112161275 A CN 112161275A CN 202011156848 A CN202011156848 A CN 202011156848A CN 112161275 A CN112161275 A CN 112161275A
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- Prior art keywords
- flue gas
- heat recovery
- recovery device
- waste
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000003546 flue gas Substances 0.000 claims abstract description 126
- 238000011084 recovery Methods 0.000 claims abstract description 82
- 239000000428 dust Substances 0.000 claims abstract description 76
- 239000002912 waste gas Substances 0.000 claims abstract description 62
- 239000002699 waste material Substances 0.000 claims abstract description 36
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 19
- 239000000779 smoke Substances 0.000 claims description 13
- 238000004056 waste incineration Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/104—High temperature resistant (ceramic) type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/40—Intercepting solids by cyclones
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A primary garbage incineration system comprises an incinerator, a waste residue heat recovery device, a cyclone dust removal device, a first waste gas heat recovery device, a second waste gas heat recovery device, a flue gas purification tower, a cloth bag dust removal device and a third waste gas heat recovery device, wherein the bottom of the incinerator is communicated with a feed inlet of the waste residue heat recovery device through a pipeline, a flue gas outlet is formed in the upper end of the incinerator, a flue gas outlet of the incinerator is communicated with a flue gas inlet of the cyclone dust removal device, a flue gas outlet of the cyclone dust removal device is communicated with a flue gas inlet in the top of the first waste gas heat recovery device, a flue gas outlet in the bottom of the first waste gas heat recovery device is communicated with a flue gas inlet of the second waste gas heat recovery device, a flue gas outlet of the second waste gas heat recovery device is communicated with a flue gas inlet of a flue gas purification tower, and a flue gas outlet of the flue gas, and a flue gas outlet of the cloth bag dust removal device is communicated with a flue gas inlet of the third waste gas heat recovery device.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a primary garbage incineration system.
Background
The primary waste for incineration is transported to the plant area, dumped into a waste pond, dewatered, fermented and then thrown into an incinerator. The heat generated by the incineration is used to heat the water in the drum above the incinerator. The steam generated by heating the water can be used for generating electricity or heating. The garbage can generate waste gas and waste residue after combustion. These waste gases and waste residues carry a large amount of heat, which if directly discharged, would result in waste of heat. At present, the purpose of utilizing the flue gas is achieved by arranging an economizer behind a flue gas discharge port of an incinerator. The water heated in the economizer is used as a source of water in the steam drum. However, this approach only uses a portion of the heat of the flue gas. A large amount of heat still exists in the flue gas and the waste slag and is not effectively utilized.
Disclosure of Invention
In view of the above, it is necessary to provide a raw refuse incineration system which can effectively utilize the heat in the waste slag and the waste gas generated by the raw refuse incineration.
A primary garbage incineration system comprises an incinerator, a waste residue heat recovery device, a cyclone dust removal device, a first waste gas heat recovery device, a second waste gas heat recovery device, a flue gas purification tower, a cloth bag dust removal device and a third waste gas heat recovery device, wherein a waste residue discharge port is formed in the bottom of the incinerator and is communicated with a feed inlet of the waste residue heat recovery device through a pipeline, a flue gas outlet is formed in the upper end of the incinerator and is communicated with a flue gas inlet of the cyclone dust removal device, an ash outlet is formed in the bottom of the cyclone dust removal device and is communicated with the bottom of the incinerator, a flue gas outlet of the cyclone dust removal device is communicated with a flue gas inlet in the top of the first waste gas heat recovery device, a flue gas outlet in the bottom of the first waste gas heat recovery device is communicated with a flue gas inlet of the second waste gas heat recovery device, the flue gas outlet of the second waste gas heat recovery device is communicated with the flue gas inlet of the flue gas purification tower, the flue gas outlet of the flue gas purification tower is communicated with the flue gas inlet of the cloth bag dust removal device, the flue gas outlet of the cloth bag dust removal device is communicated with the flue gas inlet of the third waste gas heat recovery device, and the flue gas outlet of the third waste gas heat recovery device is communicated with the atmosphere.
Preferably, the waste residue heat recovery device comprises a supporting mechanism, a spiral conveying mechanism, a first spraying mechanism, a discharging barrel and a horizontal conveying mechanism, wherein the upper end of the supporting mechanism is connected with the spiral conveying mechanism, a feeding hole of the spiral conveying mechanism is communicated with a waste residue discharging hole of an external combustion furnace through a pipeline, the first spraying mechanism is positioned in the spiral conveying mechanism to increase the humidity of waste residue, one side of the discharging barrel is open and is sleeved and connected with a discharging hole of the spiral conveying mechanism, a discharging hole is formed in the bottom of the discharging barrel, the discharging hole of the discharging barrel is positioned right above the horizontal conveying mechanism, the spiral conveying mechanism comprises a driving motor, a driving gear and a spiral conveying barrel, a machine body of the driving motor is fixedly connected with the supporting mechanism, a rotating shaft of the driving motor is connected with the driving gear to drive the driving gear to rotate, and the driving gear is meshed and connected with the spiral, correspondingly, the outer wall of the spiral conveying cylinder is provided with a rack, and the inner wall of the spiral conveying cylinder is provided with a spiral conveying baffle plate so as to drive the waste residues to move forwards.
Preferably, the first waste gas heat recovery device is an economizer, a flue gas inlet at the top of the economizer is communicated with a flue gas outlet of the cyclone dust removal device through a pipeline, a flue gas outlet at the bottom of the economizer is communicated with a flue gas inlet of the second waste gas heat recovery device, and a water outlet of a heat exchange pipeline in the economizer is communicated with an external steam pocket through a pipeline.
Preferably, the second waste gas heat recovery device comprises a flue gas hood and a heat exchange coil, wherein the flue gas hood is cylindrical, the heat exchange coil is positioned in the flue gas hood, the two ends of the flue gas hood are respectively provided with a gas inlet and a gas outlet, and the axis of the heat exchange coil is positioned on the same straight line with the centers of the gas inlet and the gas outlet of the flue gas hood.
Preferably, still be equipped with in the second waste gas heat recovery device and sweep the mechanism to dust that will fall on flue gas cover bottom and heat exchange coil blows off, it includes air compressor, first compressed air pipeline, second compressed air pipeline, air current nozzle to sweep the mechanism, air compressor's gas outlet and first compressed air pipeline and second compressed air pipeline's air inlet intercommunication, first compressed air pipeline is located the top of flue gas cover's bottom, and second compressed air pipeline is located heat exchange coil's top, is equipped with the gas outlet on first compressed air pipeline and the second compressed air pipeline, and air current nozzle is located the gas outlet of first compressed air pipeline and second compressed air pipeline.
Preferably, the cloth bag dust removing device comprises a pulse dust collector, a first spiral conveying mechanism, a second spiral conveying mechanism, a discharge valve and a second spraying mechanism, wherein an ash outlet is formed in the bottom of the pulse dust collector, the first spiral conveying mechanism is horizontally arranged at the ash outlet of the pulse dust collector, so that dust in the pulse dust collector is conveyed out through the first spiral conveying mechanism, an ash outlet is formed in the tail end of the first spiral conveying mechanism, the ash outlet of the first spiral conveying mechanism is communicated with the upper end of the second spiral conveying mechanism through a pipeline, the discharge valve is arranged on the pipeline between the first spiral conveying mechanism and the second spiral conveying mechanism, and the second spraying mechanism is located on the second spiral conveying mechanism and is used for humidifying the dust in the second spiral conveying mechanism.
Preferably, the third waste gas heat recovery device comprises a smoke staying cavity, an air preheating coil, a drainage tube and an air blower, wherein a smoke inlet is formed in the upper end of the smoke staying cavity, a smoke outlet is formed in the bottom of the smoke staying cavity, the air preheating coil is located in the smoke staying cavity, an air inlet of the air preheating tube is communicated with the atmosphere, an air outlet of the air and heat tube is communicated with one end of the drainage tube, the other end of the drainage tube is communicated with the incinerator, and the air blower is arranged on the drainage tube so as to convey hot air in the air preheating tube into the incinerator.
Has the advantages that: the primary garbage incineration system comprises an incinerator, a waste residue heat recovery device, a cyclone dust removal device, a first waste gas heat recovery device, a second waste gas heat recovery device, a flue gas purification tower, a cloth bag dust removal device and a third waste gas heat recovery device, wherein a waste residue discharge port is formed in the bottom of the incinerator and is communicated with a feed inlet of the waste residue heat recovery device through a pipeline, a flue gas outlet is formed in the upper end of the incinerator and is communicated with a flue gas inlet of the cyclone dust removal device, an ash outlet is formed in the bottom of the cyclone dust removal device, an ash outlet of the cyclone dust removal device is communicated with the bottom of the incinerator, a flue gas outlet of the cyclone dust removal device is communicated with a flue gas inlet in the top of the first waste gas heat recovery device, a flue gas outlet in the bottom of the first waste gas heat recovery device is communicated with a flue gas inlet of the second waste gas heat, the flue gas outlet of the second waste gas heat recovery device is communicated with the flue gas inlet of the flue gas purification tower, the flue gas outlet of the flue gas purification tower is communicated with the flue gas inlet of the cloth bag dust removal device, the flue gas outlet of the cloth bag dust removal device is communicated with the flue gas inlet of the third waste gas heat recovery device, and the flue gas outlet of the third waste gas heat recovery device is communicated with the atmosphere. The heat in the waste residue and the smoke is recovered through the waste residue heat recovery device, the first waste gas heat recovery device, the second waste gas heat recovery device and the third waste gas heat recovery device, so that the heat generated by burning the garbage can be fully utilized.
Drawings
FIG. 1 is a schematic structural diagram of the primary waste incineration system of the present invention.
Fig. 2 is a schematic structural view of the waste residue heat recovery device of the present invention.
Fig. 3 is a sectional view of the waste heat recovery apparatus of the present invention.
Fig. 4 is a schematic structural view of a second exhaust heat recovery device according to the present invention.
FIG. 5 is a schematic structural diagram of the cloth bag dust collector of the present invention.
FIG. 6 is a schematic structural view of a third waste gas heat recovery device according to the present invention.
In the figure: the device comprises a primary garbage incineration system 10, an incinerator 20, a waste residue heat recovery device 30, a supporting mechanism 301, a spiral conveying mechanism 302, a heat exchange mechanism 303, a first spraying mechanism 304, a discharging barrel 305, a horizontal conveying mechanism 306, a cyclone dust removal device 40, a first waste gas heat recovery device 50, a second waste gas heat recovery device 60, a flue gas hood 601, a heat exchange coil pipe 602, a flue gas purification tower 70, a cloth bag dust removal device 80, a pulse dust remover 801, a first spiral conveying mechanism 802, a second spiral conveying mechanism 803, a discharge valve 804, a second spraying mechanism 805, a third waste gas heat recovery device 90, a flue gas residence cavity 901, an air preheating coil pipe 902, a drainage pipe 903 and a blower 904.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1, a primary waste incineration system 10 includes an incinerator 20, a waste heat recovery device 30, a cyclone dust collector 40, a first waste heat recovery device 50, a second waste heat recovery device 60, a flue gas purification tower 70, a cloth bag dust collector 80, and a third waste heat recovery device 90, wherein a waste discharge port is formed at the bottom of the incinerator 20, the waste discharge port is communicated with a feed port of the waste heat recovery device 30 through a pipeline, a flue gas outlet is formed at the upper end of the incinerator 20, the flue gas outlet of the incinerator 20 is communicated with a flue gas inlet of the cyclone dust collector 40, an ash outlet is formed at the bottom of the cyclone dust collector 40, the ash outlet of the cyclone dust collector 40 is communicated with the bottom of the incinerator 20, the flue gas outlet of the cyclone dust collector 40 is communicated with the flue gas inlet at the top of the first waste heat recovery device 50, the flue gas outlet at the bottom of the first waste heat recovery device 50 is communicated with the flue gas inlet of the second waste heat, the flue gas outlet of the second waste gas heat recovery device 60 is communicated with the flue gas inlet of the flue gas purification tower 70, the flue gas outlet of the flue gas purification tower 70 is communicated with the flue gas inlet of the cloth bag dust removal device 80, the flue gas outlet of the cloth bag dust removal device 80 is communicated with the flue gas inlet of the third waste gas heat recovery device 90, and the flue gas outlet of the third waste gas heat recovery device 90 is communicated with the atmosphere.
Further, referring to fig. 2 and fig. 3, the waste residue heat recovery device 30 includes a supporting mechanism 301, a spiral delivery mechanism 302, a heat exchanging mechanism 303, a first spraying mechanism 304, a discharging barrel 305, and a horizontal conveying mechanism 306, an upper end of the supporting mechanism 301 is connected to the spiral delivery mechanism 302, a feeding port of the spiral delivery mechanism 302 is communicated with a waste residue discharging port of an external combustion furnace through a pipeline, the heat exchanging mechanism 303 and the first spraying mechanism 304 are located in the spiral delivery mechanism 302, one side of the discharging barrel 305 is open and is sleeved and connected with a discharging port of the spiral delivery mechanism 302, a discharging port is arranged at a bottom of the discharging barrel 305, a discharging port of the discharging barrel 305 is located right above the horizontal conveying mechanism 306, the spiral delivery mechanism 302 includes a driving motor, a driving gear, and a spiral delivery barrel, a machine body of the driving motor is fixedly connected to the supporting mechanism 301, a rotating shaft of the driving motor is connected to the driving gear, the driving gear is meshed with the spiral conveying cylinder and correspondingly, the outer wall of the spiral conveying cylinder is provided with a rack, and the inner wall of the spiral conveying cylinder is provided with a spiral conveying baffle to drive the waste residues to move forwards.
In a preferred embodiment, the waste water spraying mechanism comprises a waste water storage tank, a lift pump, a spraying pipeline and a nozzle, wherein the bottom of the waste water storage tank is communicated with a liquid inlet of the lift pump through a pipeline, a liquid outlet of the lift pump is communicated with a liquid inlet of the spraying pipeline, one end of the spraying pipeline is positioned in the spiral conveying cylinder and is provided with a plurality of liquid outlets, and the nozzle is arranged on the liquid outlet of the spraying pipeline. The supporting mechanism 301 comprises a supporting frame and four fixed pulleys, the upper end of the supporting frame is fixedly connected with the four fixed pulleys, the fixed pulleys are located on two sides of the spiral conveying cylinder, the spiral conveying cylinder is in lap joint with the fixed pulleys, and a machine body of the driving motor is fixedly connected with the supporting frame. Horizontal conveying mechanism 306 includes conveyer belt, dust cover, the upper end and the dust cover fixed connection of conveyer belt, the dust cover is the cube form, and the bottom of dust cover is opened and is just right with the conveyer belt mutually, and the upper end of dust cover and the discharge gate intercommunication of play feed cylinder 305, the front end of dust cover is opened to the waste residue that makes to fall on the conveyer belt can shift out the dust cover. The heat exchange mechanism 303 comprises a heat exchange pipeline and a plurality of fins, wherein the heat exchange pipeline is arranged on the upper portion of the spiral conveying cylinder in a snake shape, and the fins are uniformly distributed on the heat exchange pipeline. The medium in the heat exchange pipeline can be used as heating water or drying gas.
Further, the first waste gas heat recovery device 50 is an economizer, a flue gas inlet at the top of the economizer is communicated with a flue gas outlet of the cyclone dust removal device 40 through a pipeline, a flue gas outlet at the bottom of the economizer is communicated with a flue gas inlet of the second waste gas heat recovery device 60, and a water outlet of a heat exchange pipeline in the economizer is communicated with an external steam pocket through a pipeline.
Further, referring to fig. 4, the second exhaust heat recovery device 60 includes a flue gas cover 601 and a heat exchange coil 602, the flue gas cover 601 is cylindrical, the heat exchange coil 602 is located in the flue gas cover 601, an air inlet and an air outlet are respectively disposed at two ends of the flue gas cover 601, and an axis of the heat exchange coil 602 and centers of the air inlet and the air outlet of the flue gas cover 601 are on the same straight line.
In a preferred embodiment, the heat exchanging coil 602 is a gas pipeline to heat the gas in the heat exchanging coil 602 by the flue gas, a gas inlet of the gas pipeline is connected to the atmosphere, and a gas outlet of the gas pipeline is communicated with a gas inlet of an external drying device for dehydrating raw garbage to serve as a drying gas source for dehydrating raw garbage.
In another preferred embodiment, the heat exchanging coil 602 is a liquid pipe, and the heat exchanging coil 602 is filled with low temperature water to heat the low temperature water through the flue gas.
Further, still be equipped with in the second waste gas heat recovery device 60 and sweep the mechanism to blow off the dust that falls on flue gas cover 601 bottom and heat exchange coil 602, it includes air compressor, first compressed air pipeline, second compressed air pipeline, air current nozzle to sweep the mechanism, air compressor's gas outlet and the air inlet intercommunication of first compressed air pipeline and second compressed air pipeline, first compressed air pipeline is located the top of flue gas cover 601's bottom, and second compressed air pipeline is located heat exchange coil 602's top, is equipped with the gas outlet on first compressed air pipeline and the second compressed air pipeline, and air current nozzle is located the gas outlet of first compressed air pipeline and second compressed air pipeline.
Further, referring to fig. 5, the bag-type dust collector 80 includes a pulse dust collector 801, a first screw conveying mechanism 802, a second screw conveying mechanism 803, a discharge valve 804, and a second spraying mechanism 805, the bottom of the pulse dust collector 801 is provided with an ash outlet, the first screw conveying mechanism 802 is horizontally arranged at the ash outlet of the pulse dust collector 801, so that dust in the pulse dust collector 801 is conveyed out through the first spiral conveying mechanism 802, the tail end of the first spiral conveying mechanism 802 is provided with an ash outlet, the ash outlet of the first spiral conveying mechanism 802 is communicated with the upper end of the second spiral conveying mechanism 803 through a pipeline, a discharge valve 804 is arranged on the pipeline between the first spiral conveying mechanism 802 and the second spiral conveying mechanism 803, and the second spraying mechanism 805 is positioned on the second spiral conveying mechanism 803 so as to humidify the dust in the second spiral conveying mechanism 803.
In a preferred embodiment, the first conveying screw 802 and the second conveying screw 803 have the same structure. First screw conveying mechanism 802 includes first transport housing, first conveying motor, first screw conveying blade, first transport housing is cylindricly, the upper end of first transport housing is opened, the upper end of first transport housing and the bottom fixed connection of seal housing, in order to accept dust, one side and the first conveying motor fixed connection of first transport housing, first conveying motor's pivot and first screw conveying blade's pivot fixed connection, rotate with driving first screw conveying blade, first screw conveying blade is located first transport housing, in order to promote the dust removal in the first transport housing, the end of the bottom of first transport housing is equipped with the ash hole, the ash hole and the second screw conveying mechanism 803 of first transport housing pass through the pipeline intercommunication.
Further, referring to fig. 6, the third waste gas heat recovery device 90 includes a flue gas residence cavity 901, an air preheating coil 902, a drainage tube 903, and a blower 904, wherein a flue gas inlet is disposed at an upper end of the flue gas residence cavity 901, a flue gas outlet is disposed at a bottom of the flue gas residence cavity 901, the air preheating coil 902 is located in the flue gas residence cavity 901, an air inlet of the air preheating tube is communicated with the atmosphere, an air outlet of the air and heat pipe is communicated with one end of the drainage tube 903, another end of the drainage tube 903 is communicated with the incinerator 20, and the blower 904 is disposed on the drainage tube 903 to convey hot air in the air preheating tube to the incinerator 20.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. A primary waste incineration system is characterized in that: the waste gas heat recovery device comprises an incinerator, a waste residue heat recovery device, a cyclone dust removal device, a first waste gas heat recovery device, a second waste gas heat recovery device, a flue gas purification tower, a cloth bag dust removal device and a third waste gas heat recovery device, wherein a waste residue discharge port is formed in the bottom of the incinerator and is communicated with a feed port of the waste residue heat recovery device through a pipeline, a flue gas outlet is formed in the upper end of the incinerator and is communicated with a flue gas inlet of the cyclone dust removal device, an ash outlet is formed in the bottom of the cyclone dust removal device, an ash outlet of the cyclone dust removal device is communicated with the bottom of the incinerator, a flue gas outlet of the cyclone dust removal device is communicated with a flue gas inlet in the top of the first waste gas heat recovery device, a flue gas outlet in the bottom of the first waste gas heat recovery device is communicated with a flue gas inlet of the second waste gas heat recovery device, and a flue gas outlet of the, the flue gas outlet of the flue gas purification tower is communicated with the flue gas inlet of the cloth bag dust removal device, the flue gas outlet of the cloth bag dust removal device is communicated with the flue gas inlet of the third waste gas heat recovery device, and the flue gas outlet of the third waste gas heat recovery device is communicated with the atmosphere.
2. The primary waste incineration system of claim 1, wherein: the waste residue heat recovery device comprises a supporting mechanism, a spiral conveying mechanism, a first spraying mechanism, a discharging barrel and a horizontal conveying mechanism, wherein the upper end of the supporting mechanism is connected with the spiral conveying mechanism, a feed inlet of the spiral conveying mechanism is communicated with a waste residue discharge port of an external combustion furnace through a pipeline, the first spraying mechanism is positioned in the spiral conveying mechanism to increase the humidity of waste residue, one side of the discharging barrel is open and is sleeved and connected with the discharge port of the spiral conveying mechanism, a discharge port is arranged at the bottom of the discharging barrel, the discharge port of the discharging barrel is positioned right above the horizontal conveying mechanism, the spiral conveying mechanism comprises a driving motor, a driving gear and a spiral conveying barrel, a machine body of the driving motor is fixedly connected with the supporting mechanism, a rotating shaft of the driving motor is connected with the driving gear to drive the driving gear to rotate, and the driving gear is meshed and connected with the, correspondingly, the outer wall of the spiral conveying cylinder is provided with a rack, and the inner wall of the spiral conveying cylinder is provided with a spiral conveying baffle plate so as to drive the waste residues to move forwards.
3. The primary waste incineration system of claim 1, wherein: the first waste gas heat recovery device is an economizer, a flue gas inlet at the top of the economizer is communicated with a flue gas outlet of the cyclone dust removal device through a pipeline, a flue gas outlet at the bottom of the economizer is communicated with a flue gas inlet of the second waste gas heat recovery device, and a water outlet of a heat exchange pipeline in the economizer is communicated with an external steam pocket through a pipeline.
4. The primary waste incineration system of claim 1, wherein: the second waste gas heat recovery device comprises a flue gas hood and a heat exchange coil, wherein the flue gas hood is cylindrical, the heat exchange coil is located in the flue gas hood, the two ends of the flue gas hood are respectively provided with a gas inlet and a gas outlet, and the axis of the heat exchange coil is on the same straight line with the centers of the gas inlet and the gas outlet of the flue gas hood.
5. The primary waste incineration system of claim 4, wherein: still be equipped with in the second waste gas heat recovery device and sweep the mechanism to dust that will fall on flue gas cover bottom and heat exchange coil blows off, sweep the mechanism and include air compressor, first compressed air pipeline, second compressed air pipeline, air current nozzle, air compressor's gas outlet and the air inlet intercommunication of first compressed air pipeline and second compressed air pipeline, first compressed air pipeline is located the top of flue gas cover's bottom, and second compressed air pipeline is located heat exchange coil's top, is equipped with the gas outlet on first compressed air pipeline and the second compressed air pipeline, and air current nozzle is located the gas outlet of first compressed air pipeline and second compressed air pipeline.
6. The primary waste incineration system of claim 1, wherein: the cloth bag dust removing device comprises a pulse dust collector, a first spiral conveying mechanism, a second spiral conveying mechanism, a discharge valve and a second spraying mechanism, wherein an ash outlet is formed in the bottom of the pulse dust collector, the first spiral conveying mechanism is horizontally arranged at the ash outlet of the pulse dust collector, so that dust in the pulse dust collector is conveyed out through the first spiral conveying mechanism, an ash outlet is formed in the tail end of the first spiral conveying mechanism, the ash outlet of the first spiral conveying mechanism is communicated with the upper end of the second spiral conveying mechanism through a pipeline, the discharge valve is arranged on the pipeline between the first spiral conveying mechanism and the second spiral conveying mechanism, and the second spraying mechanism is located on the second spiral conveying mechanism and is used for humidifying the dust in the second spiral conveying mechanism.
7. The primary waste incineration system of claim 1, wherein: the third waste gas heat recovery device comprises a smoke staying cavity, an air preheating coil, a drainage tube and an air blower, wherein a smoke inlet is formed in the upper end of the smoke staying cavity, a smoke outlet is formed in the bottom of the smoke staying cavity, the air preheating coil is located in the smoke staying cavity, an air inlet of the air preheating tube is communicated with the atmosphere, an air outlet of the air and a heat pipe is communicated with one end of the drainage tube, the other end of the drainage tube is communicated with the incinerator, and the air blower is arranged on the drainage tube to convey hot air in the air preheating tube into the incinerator.
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| CN202011156848.5A CN112161275A (en) | 2020-10-26 | 2020-10-26 | Primary garbage incineration system |
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| CN202011156848.5A CN112161275A (en) | 2020-10-26 | 2020-10-26 | Primary garbage incineration system |
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| CN112161275A true CN112161275A (en) | 2021-01-01 |
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Cited By (1)
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