CN111256147A - Household garbage pyrolysis gasification incineration grate furnace and treatment system thereof - Google Patents

Household garbage pyrolysis gasification incineration grate furnace and treatment system thereof Download PDF

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Publication number
CN111256147A
CN111256147A CN202010181939.8A CN202010181939A CN111256147A CN 111256147 A CN111256147 A CN 111256147A CN 202010181939 A CN202010181939 A CN 202010181939A CN 111256147 A CN111256147 A CN 111256147A
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grate
flue gas
incineration
feeding
pyrolysis gasification
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CN202010181939.8A
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Chinese (zh)
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李智
孙强林
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Individual
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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
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
    • 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
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste
    • 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
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H11/00—Travelling-grates
    • F23H11/12—Travelling-grates inclined travelling grates; Stepped travelling grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H11/00—Travelling-grates
    • F23H11/18—Details
    • F23H11/20—Driving-means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H11/00—Travelling-grates
    • F23H11/18—Details
    • F23H11/22—Moving fuel along grate; Cleaning of grate
    • 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
    • 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
    • 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
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/101—Furnace arrangements with stepped or inclined grate
    • 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
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

The invention provides a household garbage pyrolysis gasification incineration grate furnace and a treatment system thereof, wherein the treatment system comprises a household garbage pyrolysis gasification incineration grate furnace, a waste heat utilization system, a flue gas purification system and a flue gas discharge system, the household garbage pyrolysis gasification incineration grate furnace comprises a pyrolysis gasification device, an incineration system and a secondary combustion chamber, the incineration system comprises an incineration hearth and a grate device, the pyrolysis gasification device is arranged above the incineration hearth and is communicated with the incineration hearth, the incineration hearth is communicated with a primary air inlet, the grate device is arranged at the bottom of the incineration hearth, the secondary combustion chamber is arranged above the pyrolysis gasification device and is communicated with the pyrolysis gasification device, a feeding hole is formed in the pyrolysis gasification device, and a secondary air inlet pipe is formed in the secondary combustion chamber. The invention has the advantages of continuous and stable pyrolysis and gasification, high heat efficiency, cleaner flue gas discharged after pyrolysis and gasification and reduced operation cost.

Description

Household garbage pyrolysis gasification incineration grate furnace and treatment system thereof
Technical Field
The invention relates to the field of garbage pyrolysis and gasification treatment, in particular to a household garbage pyrolysis and gasification incineration grate furnace and a treatment system thereof.
Background
At present, two treatment modes of pyrolysis gasification and incineration mainly exist in the field of household garbage treatment:
1. the garbage incineration is generally carried out by adopting the mechanical grate furnace or fluidized bed process mode, namely, the household garbage is put into an incinerator for high-temperature incineration, and the heat generated by the incineration is utilized for power generation, and the incineration method has the defects of large equipment investment, high operation cost, large temperature change amplitude, difficult standard discharge and the like:
(1) the garbage is greatly disturbed in the furnace, and a large amount of fly ash can be generated;
(2) flue gas is not completely combusted, the amount of dust particles carrying solid dioxin is large, so that the concentration of the dioxin is high, the escape rate of carbon monoxide is high, and the residual oxygen content after oxygen-enriched combustion is high, so that pollutants such as nitrogen oxide, sulfur dioxide and the like are easily synthesized, and the problems of difficult later-stage flue gas treatment and high operation cost are caused;
(3) because the drying, burning and burning processes of the grate furnace are all finished on the grate, the area of the grate is large, and the mechanical load of the grate is large;
(4) drying, burning and burning out are in the same hearth, and the garbage drying is a heat absorption process, so that the temperature in the hearth is relatively unstable;
(5) the equipment investment cost is high;
(6) the independent secondary combustion chamber is lacked, and pollutants such as hydrogen chloride dioxin and the like cannot be damaged at high temperature;
2. the garbage pyrolysis gasification is that the garbage is still in a closed oxygen-poor environment, the garbage is decomposed and gasified by absorbing heat through high temperature generated by residual burning of garbage fixed carbon, the stability of the temperature of the process method (namely, the garbage self-burning) is very important, and the garbage pyrolysis gasification equipment appearing in the market at present generally has the problem of instability in burning of the gasified garbage, which directly causes the instability of the pyrolysis gasification, and simultaneously, slag is coked due to low temperature, and the problem of slag discharging also exists.
In a patent named a grate-based pyrolysis and gasification treatment system (patent No. CN110486728), although the name of the system describes a pyrolysis and gasification treatment system, it is still an incineration treatment system according to its structural features as follows:
(1) the furnace chamber is opened, and the flue gas directly flows away;
(2) the process of oxygen reduction and gasification and an independent secondary combustion chamber do not exist;
(3) the garbage directly enters the fire grate to be incinerated, and fly ash generated by garbage disturbance directly flows away along with the flue gas without any interception;
(4) the unique characteristic is that the temperature of partial oxygen-less tail gas is used for drying, but the special quality of the incinerator is not changed, and the flue gas quantity is disturbed.
Disclosure of Invention
The invention aims to provide a household garbage pyrolysis gasification incineration grate furnace and a treatment system thereof, which solve one or more of the prior technical problems.
The household garbage pyrolysis gasification incineration grate furnace comprises a pyrolysis gasification device, a secondary combustion chamber and an incineration system, wherein the incineration system comprises an incineration hearth and a grate device, the pyrolysis gasification device is arranged above the incineration hearth and is communicated with the incineration hearth, the incineration hearth is communicated with a primary air inlet, the grate device is arranged at the bottom of the incineration hearth, the secondary combustion chamber is arranged above the pyrolysis gasification device and is communicated with the pyrolysis gasification device, a feeding hole is formed in the upper part of the pyrolysis gasification device, and a secondary air inlet pipe is formed in the secondary combustion chamber.
In some embodiments, the pyrolysis gasification device consists of a cylinder and a furnace roller, the furnace roller is arranged below the feeding hole, the secondary combustion chamber is of a cylinder structure, the upper part of the side surface of the secondary combustion chamber is provided with a flue gas outlet, the lower part of the secondary combustion chamber is provided with a plurality of secondary air inlet pipes, and the secondary air inlet pipes are of a cyclone arrangement structure; and a burner is arranged on the secondary combustion chamber above the secondary air inlet pipe.
In some embodiments, the grate device is obliquely arranged, a feeding platform is arranged at the high end of the grate device, the pyrolysis gasification device is installed above the feeding platform, a feeding device is arranged on one side of the feeding platform, the other side of the feeding platform is connected with the incineration furnace, an ash falling air inlet bin is arranged below the grate device, the ash falling air inlet bin is of a hollow inverted trapezoidal platform structure, an upper opening of the ash falling air inlet bin is connected with the grate device, an ash falling opening is formed in the bottom of the ash falling air inlet bin, a first ash discharging valve is arranged on the ash falling opening, a primary air inlet is formed in the side face of the ash falling air inlet bin, the primary air inlet is communicated with the incineration furnace through the upper opening of the ash falling air inlet bin and the grate device, a slag falling channel is arranged at the low end of the grate device, and a slag discharging.
In certain embodiments, the slag discharging device includes a shell, a slag discharging driving device, a slag discharging driving connecting rod mechanism and a slag discharging push rod, the shell is in a U shape, the shell is connected with a slag falling channel, the top of the shell is provided with a slag falling hole communicated with the slag falling channel, the slag discharging driving device, the slag discharging driving connecting rod mechanism and the slag discharging push rod are sequentially connected and installed on one side driven by the shell, the slag discharging driving device and the slag discharging driving connecting rod mechanism are installed outside the shell, the slag discharging push rod is installed in the shell, one side opposite to one side driven by the shell on the shell is a non-driving side of the shell, and the non-driving side of the shell is provided with the slag discharging hole.
In some embodiments, the fire grate device comprises a fire grate support, a fire grate driving device, a fire grate pressing device and a material layer control device, wherein the fire grate comprises a movable fire grate sheet and a static fire grate sheet, the movable fire grate sheet and the static fire grate sheet are arranged at intervals, and the movable grate segment and the static grate segment are both provided with primary air holes, the grate support comprises a side wall plate, a fixed beam, a movable beam and a support, a hollow layer is arranged in the middle of the side wall plate, the planes on the upper side and the lower side of the hollow layer are both provided with air vents, primary air inlets are communicated with the incineration furnace chamber through upper openings and the air vents, the fixed cross beam is arranged between the two side wall plates, the movable cross beam and the fixed cross beam are arranged at intervals, the static fire grate segment is arranged on the fixed cross beam, the movable fire grate segment is arranged on the movable cross beam, the fire grate pressing device is arranged at the low end of the fire grate device, and a material layer control device is arranged behind the fire grate pressing device.
In some embodiments, domestic waste pyrolysis gasification incineration grate furnace still includes charge-in system, and charge-in system includes feeder hopper and feeding chute, and the feeder hopper is connected with the feeding chute, and feed arrangement is installed to the below of feeding chute, and feed arrangement is connected with the feed inlet, and wherein the feeding chute adopts water-cooling jacket structure, is provided with sealing door and fire prevention water jet equipment on the feeding chute, and fire prevention water jet equipment passes through the pipeline and is connected with the water pump, and waterproof flaming device is used for spraying water in the feeding chute.
Use processing system of domestic waste pyrolysis gasification incineration grate furnace, including domestic waste pyrolysis gasification incineration grate furnace, the waste heat utilization system, flue gas purification system and flue gas discharge system, the waste heat utilization system includes waste heat utilization equipment and denitrification facility, denitrification facility includes the hydrojet pond, hydrojet pump and spout, the hydrojet pond is used for holding liquid for the denitration, hydrojet pond connects gradually hydrojet pump and spout through the pipeline, the spout is installed on waste heat utilization equipment, the flue gas inlet of waste heat utilization equipment is connected with the exhanst gas outlet of second combustion chamber, the exhanst gas outlet of waste heat utilization system and flue gas purification system's flue gas inlet connection, flue gas purification system's exhanst gas outlet and flue gas discharge system are connected.
In some embodiments, the household garbage pyrolysis gasification incineration grate furnace and the treatment system thereof further comprise a waste gas liquid treatment device, wherein a leachate spray nozzle is arranged in the secondary combustion chamber, the waste gas liquid treatment device comprises two parts of waste liquid treatment and waste gas treatment, the waste liquid treatment part is respectively communicated with the leachate pool and the leachate spray nozzle, and the leachate spray nozzle is used for spraying leachate into the secondary combustion chamber; the waste gas treatment part is used for communicating the pretreatment area with an air preheater, a primary air inlet and a secondary air inlet pipe, the air preheater is connected with waste heat utilization equipment, the waste heat utilization equipment is used for providing a heat source for the air preheater, the waste odor and peculiar smell air in the pretreatment area is preheated by the waste gas treatment part through the air preheater, and the air is respectively supplied to the incineration hearth and the secondary combustion chamber through the primary air inlet and the secondary air inlet pipe.
In some embodiments, the denitration device adopts an SNCR denitration device, the flue gas purification system includes a deacidification cooling device, an adsorption purification device, a flue gas dedusting system and an SCR denitration system, a flue gas inlet of the deacidification cooling device is connected with a flue gas outlet of the waste heat utilization system, a flue gas outlet of the deacidification cooling device is connected with a flue gas inlet of the adsorption purification device, a flue gas inlet of the flue gas dedusting system is connected with a flue gas outlet of the adsorption purification device, a flue gas outlet of the flue gas dedusting system is connected with a flue gas inlet of the SCR denitration system, and a flue gas outlet of the SCR denitration system is connected with a flue gas discharge system.
The household garbage pyrolysis gasification incineration grate furnace and the treatment system thereof have the advantages that:
1. the garbage pyrolysis gasification device and the like are independent of the fire grate, so that the area of the fire grate is effectively reduced, the mechanical load of the fire grate is reduced, and the equipment investment cost is reduced;
2. the waste is pyrolyzed and gasified on the basis of the incinerator grate furnace, the advantage of cleanness of pyrolysis and gasification smoke is exerted, the waste is pyrolyzed and gasified and then enters the incineration system, so that the waste in the incineration hearth is combusted more stably and sufficiently, stable high-temperature conditions are provided for pyrolysis and gasification, the continuous stability of pyrolysis and gasification is ensured, the heat energy contained in the smoke generated by combustion is improved, and the heat efficiency is high;
3. the pyrolysis gasification device is arranged above the incineration hearth, the secondary combustion chamber is arranged above the pyrolysis gasification device, smoke generated by incineration in the incineration hearth can be filtered when the smoke passes through garbage in the pyrolysis gasification device when the smoke is conveyed upwards, most fly ash in the smoke can be intercepted by a garbage layer, the content of fly ash in the smoke is greatly reduced, and meanwhile, pyrolysis gasification combustible gas is combusted in the secondary combustion chamber, so that the temperature of the secondary combustion chamber is greatly improved, harmful substances such as dioxin and the like can be more effectively cracked, the concentration of the dioxin in the smoke is reduced, the subsequent smoke treatment is facilitated, the standard emission of the smoke is facilitated, and the operation cost is reduced;
4. the flue gas is subjected to SNCR and SCR double denitration process treatment, so that the denitration effect is effectively ensured;
5. the GGH flue gas is subjected to heating treatment, so that the denitration operation cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a household garbage pyrolysis gasification incineration grate furnace treatment system in one embodiment of the invention;
fig. 2 is a schematic structural diagram of a grate apparatus according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, this embodiment proposes a household garbage pyrolysis gasification incineration grate furnace and a treatment system thereof, the treatment system comprises a waste gas liquid treatment device 9, a household garbage pyrolysis gasification incineration grate furnace, a waste heat utilization system, a flue gas purification system and a flue gas discharge system, the household garbage pyrolysis gasification incineration grate furnace, the waste heat utilization system, the flue gas purification system and the flue gas discharge system are sequentially connected, the waste gas liquid treatment device 9 is connected with the household garbage pyrolysis gasification incineration grate furnace, the waste heat utilization system comprises a waste heat utilization device 31 and a denitration device 33, the waste heat utilization device 31 adopts a waste heat boiler or a heat exchanger, the denitration device 33 adopts an SNCR denitration device, the denitration device 33 comprises a liquid spray pool 331, a liquid spray pump 332 and a nozzle 333, the liquid spray pool 331 contains a liquid for denitration, the liquid for denitration can adopt liquid ammonia, the liquid spray pool 331 is sequentially connected with the liquid spray pump 332 and the nozzle 333 through a pipeline, the nozzle 333 is mounted on the waste heat utilization device 31;
the household garbage pyrolysis gasification incineration grate furnace comprises a feeding system, a secondary combustion chamber 25, a pyrolysis gasification device 24, a feeding system 21 and an incineration system, wherein the incineration system comprises an incineration hearth 22 and a grate device 23, the pyrolysis gasification device 24 is arranged above the incineration hearth 22 and is communicated with the incineration hearth 22, the incineration hearth 22 is communicated with a primary air inlet 261, the grate device 23 is installed at the bottom of the incineration hearth 22, the secondary combustion chamber 25 is arranged above the pyrolysis gasification device 24 and is communicated with the pyrolysis gasification device 24, a feeding hole is formed in the upper part of the pyrolysis gasification device 24, a secondary air inlet pipe 253 is arranged on the secondary combustion chamber 25, the feeding system is connected with the feeding hole in the pyrolysis gasification device 24,
the secondary combustion chamber 25 is of a cylindrical structure, a percolate spray nozzle 251 and an emergency discharge port 252 are mounted at the top of the secondary combustion chamber, a flue gas outlet is formed in the upper portion of the side face of the secondary combustion chamber and connected with the waste heat utilization device 31, a feed inlet is formed in the side wall of the middle of the secondary combustion chamber 25, garbage is thrown into the secondary combustion chamber through the feed inlet to enable the garbage to fall into the pyrolysis gasification device 24, and a plurality of secondary air inlet pipes 253 which are of a cyclone arrangement structure are arranged above the feed; a secondary air inlet pipe 253 is arranged on the secondary combustion chamber 25, a burner 254 is arranged on the secondary combustion chamber 25 above the secondary air inlet pipe 253,
the feeding system comprises a feeding hopper 11 and a feeding chute 12, the feeding hopper 11 is connected with the feeding chute 12, the feeding chute 12 adopts a water-cooling jacket structure, a sealing door 13 and a fireproof water spraying device 15 are arranged on the feeding chute 12, the sealing door 13 is arranged in the feeding chute 12 and close to the feeding hopper 11, a temperature detection element and a flame detection element are arranged in the feeding chute 12, the sealing door 13 and the fireproof water spraying device 15 are driven to be opened or closed through flame detection and temperature detection element detection, the sealing door 13 is driven by hydraulic pressure, air pressure or electric drive, when the flame detection element detects that flame appears in the feeding chute 12, the sealing door 13 is closed, materials and external air are blocked by the sealing door 13 to enter the feeding chute 12 through the feeding chute, the fireproof water spraying device 15 is connected with a water pump through a pipeline, and the waterproof fire spraying device 15 is used for spraying water in the feeding chute 12, the fire-proof water spraying device 15 adopts a water spraying nozzle, when the temperature of flame or garbage in the feeding chute 12 is detected to be too high, the temperature data value detected by the temperature detection element exceeds a first threshold value (the first threshold value can be set and modified through a built-in automatic program code), the fireproof water spraying device 15 is used for spraying water to the garbage in the feeding chute 12 to prevent the garbage in the feeding chute 12 from burning, the feeding device 14 is arranged below the feeding chute 12, the feeding device 14 is connected with the feeding hole, when the feeding device 14 is not provided, the feeding chute 12 can be directly connected with the feeding hole, the feeding device 14 consists of a feeding driving device 141 and a feeding push rod 142, the feeding driving device 141 can be driven by hydraulic pressure, air pressure or electric power, the feeding driving device 141 is connected with the pushing push rod 142, and the feeding push rod 142 is inserted into the feeding chute 12 and used for pushing the garbage into the pyrolysis gasification device 24;
the pyrolysis gasification device 24 is composed of a cylinder 241 and a furnace roller 242, the furnace roller 242 is installed in the middle of the pyrolysis gasification cylinder 241 (the pyrolysis gasification device 24 can also be used when the furnace roller 242 is not installed), the top of the cylinder 241 is communicated with the secondary combustion chamber 25, the bottom of the cylinder 241 is communicated with the incineration furnace chamber 22,
the feeding device 21 is arranged on the outer side of the high end of the grate device 23 below the pyrolysis gasification device 24, the feeding device comprises a feeding driving device 211, a feeding push rod 212 and a feeding platform 213, the feeding push rod 212 is arranged on the feeding platform 213, the feeding platform 213 is arranged at the high end of the grate device 23, the feeding driving device 211 can be driven by hydraulic pressure, air pressure or electricity, the feeding driving device 211 is connected with the feeding push rod 212, the feeding push rod 212 is inserted into the incineration hearth 22, the feeding push rod 212 is driven by the feeding driving device 211 to push the garbage onto the grate device 23,
the fire grate device 23 is obliquely arranged, the pyrolysis gasification device 24 is arranged above the feeding platform 213, one side of the feeding platform 213 is provided with a feeding device 21, the other side of the feeding platform 213 is connected with the incineration hearth 22, an ash falling air inlet bin 26 is arranged below the fire grate device 23, the ash falling air inlet bin 26 is of a hollow inverted trapezoidal platform structure, the upper opening of the ash falling air inlet bin 26 is connected with the fire grate device 23, the bottom of the ash falling air inlet bin 26 is provided with an ash falling opening, the ash falling opening is provided with a first ash discharging valve 262, a primary air inlet 261 is arranged on the side surface of the ash falling air inlet bin 26, the lower end of the fire grate device 23 is provided with a slag falling channel 222, a slag discharging device 27 is arranged below the slag falling channel 222, wherein the inclination angle a of the fire grate device 23,
as shown in fig. 2, the fire grate device 23 includes a fire grate support, a fire grate driving device, a fire grate pressing device 235 and a material layer control device 236, the fire grate includes a movable fire grate segment 232 and a static fire grate segment 233, the movable fire grate segment 232 and the static fire grate segment 233 are arranged at intervals in rows, primary air holes are respectively arranged on the movable fire grate segment 232 and the static fire grate segment 233, the fire grate support includes side wall plates 2311, fixed cross beams 2312, a movable cross beam 2313 and a support 2314, a hollow layer is arranged in the middle of the side wall plates 2311, ventilation openings are respectively arranged on the planes on the upper side and the lower side of the hollow layer, a primary air inlet 261 is communicated with the incineration chamber 22 through an upper opening and the ventilation openings and is used for conveying primary air into the incineration chamber 22, the fixed cross beam 2312 is arranged between the two side wall plates 2311, the movable cross beam 2313 and the fixed cross beam 2312 are arranged at intervals, the static fire grate segments 233 are arranged on the, the grate pressing device 235 is installed at the low end of the grate device 23 and presses the tail end row of grates, the grate pressing device 235 is provided with a material layer control device 236 for controlling the thickness of a material layer, a plurality of movable grate segments 232 and static grate segments 233 are arranged between every two side wall plates 2311 of the grate device 23 in a row, an operator can set the number of the grate devices 23 according to the treatment capacity, a reverse-push type grate is formed in fig. 2, a forward-push type grate or a forward-push type and reverse-push type combined grate can be adopted in the domestic garbage pyrolysis gasification incinerator grate, wherein the grate driving device is composed of a grate driving main body 2341, a grate driving rod 2342, a grate driving connecting rod mechanism 2343 and a grate driving beam 2344 which are sequentially connected, the grate driving beam 2344 is installed below the grate segments, penetrates through the fixed cross beam 2312 and the movable cross beam 2313 and is fixedly connected with the movable cross beam 2313, the grate driving main body 2341 is driven by hydraulic pressure or electric pressure, the pyrolysis gasification device 24 is a cylindrical structure, is arranged above the incineration hearth 22 and is connected with the smoke outlet of the incineration hearth 22,
the slag discharging device 27 comprises a shell 271, a slag discharging driving device 272, a slag discharging driving link mechanism 273 and a slag discharging push rod 274, wherein the shell 271 is U-shaped, the shell 271 is connected with the slag falling channel 222, the top of the shell 271 is provided with a slag falling hole communicated with the slag falling channel 222, the slag discharging driving device 272, the slag discharging driving link mechanism 273 and the slag discharging push rod 274 are sequentially connected and arranged at one side driven by the shell 271, the slag discharging driving device 272 and the slag discharging driving link mechanism 273 are arranged outside the shell 271, the slag discharging push rod 274 is arranged in the shell 271, one side of the shell 271, which is opposite to the side driven by the shell 271, is a non-driving side of the shell 271, and the non-driving side of the shell 271 is provided with the slag discharging hole;
the waste gas and liquid treatment device 9 comprises two parts of waste liquid treatment and waste gas treatment, the waste liquid treatment part is respectively communicated with a percolate pool and a percolate spray nozzle 251, the percolate spray nozzle 251 is used for spraying percolate into the secondary combustion chamber 25, the waste liquid treatment part can adopt a liquid pumping device (such as a liquid pumping pump) and a pipeline, and waste liquid in the percolate pool is pumped by the liquid pumping pump and is guided to the percolate spray nozzle 251 to be sprayed out through the pipeline; the waste gas treatment part is used for communicating the pretreatment area with an air preheater 32, a primary air inlet 261 and a secondary air inlet pipe 253, the air preheater 32 is connected with a waste heat utilization device 31 (if the waste heat utilization device 31 adopts a waste heat boiler, the air preheater 32 is connected with a steam distribution drum of the waste heat boiler), the waste heat utilization device is used for providing a heat source for the air preheater 32, the waste gas treatment part preheats the waste odor and peculiar smell air in the pretreatment area through the air preheater 32, and then the preheated waste is respectively led into the incineration hearth 22 and the secondary combustion chamber 25 through the primary air inlet 261 and the secondary air inlet pipe 253, wherein the pretreatment area is used for pretreatment areas such as garbage stacking, fermentation, crushing and the like, the waste gas treatment part can adopt an air extraction device (such as an air pump) and a pipeline, and the gas in the pretreatment area is extracted through the air extraction device, the exhaust gas is then introduced into the air preheater 32 for preheating by the introduction of the duct, and then the preheated exhaust gas is introduced into the primary air inlet 261 and the secondary air inlet pipe 253 by the duct,
the flue gas purification system comprises a deacidification cooling device 4, an adsorption purification device 5, a flue gas dust removal system 6 and an SCR denitration system 7, wherein a flue gas inlet of the deacidification cooling device 4 is connected with a flue gas outlet of the waste heat utilization equipment, a flue gas outlet of the deacidification cooling device 4 is connected with a flue gas inlet of the adsorption purification device 5, a flue gas inlet of the flue gas dust removal system 6 is connected with a flue gas outlet of the adsorption purification device 5, and a flue gas outlet of the flue gas dust removal system 6 is connected with a flue gas outlet ofExport and SCR deNOx systems 7's flue gas inlet connection, SCR deNOx systems 7's flue gas outlet and flue gas discharge system are connected deacidification cooling device 4 and are included deacidification cooling tower 41, high-speed rotatory atomizer 42, deacidification liquid pond 43, atomizing pump 44 and second unloading valve 45, deacidification cooling tower 41 flue gas inlet is connected to the flue gas outlet of waste heat utilization equipment 31, high-speed rotatory atomizer 42 is installed at deacidification cooling tower 41 top, deacidification liquid pond 43 connects gradually atomizing pump 44 and high-speed rotatory atomizer 42 through the pipeline, it is Ca (OH) to hold in the deacidification liquid pond 432A second ash discharge valve 45 is arranged at the bottom of the deacidification cooling tower 41,
the adsorption and purification device 5 comprises an adsorption and purification device body 51 and a dry powder feeder 52, the inlet and outlet of the adsorption and purification device are respectively connected with the flue gas outlet of the deacidification cooling tower and the flue gas inlet of the bag-type dust remover 61, the dry powder feeder 52 is arranged on the adsorption and purification device body,
the flue gas dust removal system 6 comprises a bag-type dust remover 61, a compressed air device 62 and a third ash discharge valve 63, wherein the compressed air device 62 is connected with the bag-type dust remover 61, the third ash discharge valve 63 is arranged at the bottom of the bag-type dust remover 61,
the SCR denitration system 7 comprises a GGH flue gas heating device 71, an SGH flue gas heating device 72, an SCR denitration device 73 and a container 74 for containing a denitration agent,
the flue gas discharge system 8 comprises an induced draft fan 81 and a chimney 82, and flue gas discharged from the SCR denitration system 7 is introduced into the chimney 82 through the induced draft fan 81 and then discharged.
The working principle of the household garbage pyrolysis gasification incineration grate furnace and the treatment system thereof described in the embodiment is as follows:
step 1, delivering domestic garbage to a feed hopper 11 through a material delivering device to enter a feeding chute 12, pushing the garbage in the chute to enter a pyrolysis gasification device 24 through a feeding device 14, and forming a garbage material layer;
step 2, high-temperature flue gas in the incineration hearth 22 is discharged upwards through the incineration hearth 22 under the action of the induced draft fan 81, the garbage moves upwards through a garbage material layer in the pyrolysis gasification device 24, the garbage is dried and pyrolyzed and gasified under the action of the high-temperature flue gas, a furnace roller 241 of the pyrolysis gasification device rotates, coking can be prevented through the rotation of the furnace roller 241, the flowing discharge of pyrolyzed combustible gas is facilitated, meanwhile, the flue gas discharged from the incineration hearth 22 is filtered when passing through the garbage material layer, fly ash and the like contained in the flue gas can be intercepted and attached to the garbage, and the flue gas is purified;
step 3, the garbage after pyrolysis gasification continuously sinks on a feeding platform 213 of the feeding device 21 in the pyrolysis gasification device 24, the garbage is pushed by the feeding device 21 and enters the grate device 23, and then the material sequentially passes through a combustion area and an after-burning area, and because the garbage is dried, pyrolyzed and gasified, the material directly combusts after entering the grate device 23, the temperature in the incineration hearth 22 is guaranteed not to be influenced by the fluctuation and the influence of the feeding material, and the combustion and the after-burning are stable;
step 4, the grate driving device 234 pushes the moving grate 232 to reciprocate on the static grate 233, so that the garbage at the bottom is pushed and turned upwards, and meanwhile, the material layer moves downwards along the whole grate, so that the garbage materials on the grate are mixed and stirred, and the combustion is more complete;
step 5, the waste odorous air in the pretreatment area is sent to the air preheater 32 through the waste gas liquid treatment device 9, and then enters through a pipeline and a primary fan through a primary air inlet 261 of the ash falling air inlet bin 26, is discharged from the side wall plate 2311 and a primary air hole, and supplies air to a material layer on a fire grate and the incineration hearth 22, so that the sufficient combustion of the materials and the stability of the temperature of the incineration hearth 22 are ensured;
step 6, high-temperature flue gas generated by combustion of the incineration hearth 22 enters the pyrolysis gasification device 24 from a flue gas outlet of the hearth 22 under the action of an induced draft fan, heat energy is provided for pyrolysis gasification of garbage in the pyrolysis gasification device 24, the high-temperature flue gas and combustible gas generated by pyrolysis gasification enter a secondary combustion chamber 25, and due to the fact that the hot flue gas and the combustible gas are filtered through a garbage material layer, fly ash in the flue gas is intercepted, so that fly ash in the flue gas is greatly reduced, and the concentration of dioxin is greatly reduced;
step 7, combustible gas enters the secondary combustion chamber 25, meanwhile, high-temperature waste odorous air preheated by the air preheater 32 enters the secondary combustion chamber 25 from the secondary air inlet pipe 253 through a secondary fan to provide secondary air for flue gas combustion, after the secondary air enters the secondary combustion chamber, the flue gas is driven to form rotational flow in the secondary combustion chamber 25, combustible gas is fully mixed and combusted with the secondary air in the secondary combustion chamber, the retention time of high-temperature combustion of the flue gas is not less than 2 seconds, and harmful substances such as dioxin in the flue gas are cracked at high temperature;
step 8, the high-temperature flue gas after full combustion is discharged from a flue gas outlet of the secondary combustion chamber 25 and enters the waste heat utilization equipment 31 for waste heat utilization, and steam or hot water produced by a waste heat boiler or a heat exchanger can be used for generating electricity and providing heat energy for production or life, so that economic benefit is created for the system;
step 9, in the working process of the fire grate, a small amount of fine ash falls from the pores, enters the ash falling air inlet bin 26, is discharged from an ash falling port through an ash discharge valve 262, is conveyed to the slag falling channel 222 and falls into the slag discharging device 27;
step 10, under the gravity action of the grate and the slag, the slag enters the slag discharging device 27 from a slag falling hole of the slag falling channel 222, and is discharged by driving a slag discharging push rod 274 through a slag discharging driving link mechanism 273 by the slag discharging driving device 272;
step 11, after entering the waste heat utilization equipment 31, the high-temperature flue gas subjected to high-temperature combustion in the secondary combustion chamber contacts with liquid ammonia sprayed from a nozzle 333 of the denitration device 33 to remove nitrogen oxides in the flue gas, and enters the deacidification cooling tower 41 from a flue gas outlet after heat exchange in the furnace;
step 12, Ca (OH) in deacidification liquid tank 432The solution is conveyed by a spray pump 44, acted by a high-speed rotating spray device 42, atomized in the deacidification cooling tower 41 and contacted with the flue gas entering the tower for reaction, so that acidic substances in the flue gas are removed; under the action of the temperature of the flue gas, the reactant is dried into granular powder and falls into the bottom of the tower, and the granular powder is discharged through a second ash discharge valve 45;
step 13, contacting the deacidified flue gas with the activated carbon and slaked lime of the dry powder feeder 52 in the adsorption and purification device body 51 of the adsorption and purification device 5, adsorbing dust particles in the flue gas, and further removing residual acidic substances;
step 14, the flue gas after adsorption and purification enters a flue gas dust removal system 6, and the residual dust particles are intercepted by a cloth bag of a cloth bag dust remover 61;
step 15, after the flue gas is dedusted by the flue gas dedusting system 6, the flue gas enters the denitration device 73 of the denitration system 7, because a large amount of dust is intercepted, the subsequent denitration is very favorable, and a foundation is laid for ensuring the denitration effect, but because the bag-type dust collector limits the flue gas temperature, the flue gas temperature after dedusting is lower, and the flue gas is not suitable for the temperature requirement of SCR denitration, the high-temperature flue gas after SCR denitration is returned to the denitration device 71 through the GGH flue gas heating device and is used for heating the low-temperature flue gas after dedusting, and the flue gas temperature is ensured to reach the temperature required by SCR denitration by subsequently assisting the SGH flue gas heater 72, so that the denitration effect of the flue gas is ensured, the energy is saved, the operation cost is greatly reduced, and the cost is reduced by 27% compared with the method without adopting the GGH flue gas return;
and step 16, after the flue gas is subjected to SCR denitration treatment, the flue gas temperature is high, waste heat is returned by the GGH flue gas heater 71, and the flue gas enters a chimney 82 through an induced draft fan 81 to be discharged.
The foregoing is only a preferred form of the invention and it should be noted that several similar variations and modifications could be made by one skilled in the art without departing from the inventive concept and these should also be considered within the scope of the invention.

Claims (9)

1. The utility model provides a domestic waste pyrolysis gasification incineration grate furnace which characterized in that: including pyrolysis gasification device (24), second combustion chamber and system of burning, the system of burning is including burning furnace (22) and grate device (23), pyrolysis gasification device (24) set up in the top of burning furnace (22), and with burning furnace (22) intercommunication, burn furnace (22) intercommunication primary air intake (261), fire grate device (23) are installed to the bottom of burning furnace (22), second combustion chamber (25) set up the top at pyrolysis gasification device (24), and with pyrolysis gasification device (24) intercommunication, pyrolysis gasification device (24) upper portion is equipped with the feed inlet, be equipped with overgrate air inlet pipe (253) on second combustion chamber (25).
2. The household garbage pyrolysis gasification incineration grate furnace of claim 1, wherein the pyrolysis gasification device (24) consists of a cylinder (241) and a furnace roller (242), the furnace roller (242) is installed below the feeding hole, the secondary combustion chamber (25) is of a cylinder structure, a flue gas outlet is formed in the upper portion of the side surface of the secondary combustion chamber (25), a plurality of secondary air inlet pipes (253) are arranged at the lower portion of the secondary combustion chamber (25), and the secondary air inlet pipes (253) are of a cyclone arrangement structure; a burner (254) is arranged on the second combustion chamber (25) above the secondary air inlet pipe (253).
3. The household garbage pyrolysis gasification incineration grate furnace as claimed in claim 1, wherein the grate device (23) is obliquely arranged, a feeding platform (213) is arranged at the high-position end of the grate device (23), the pyrolysis gasification device (24) is installed above the feeding platform (213), a feeding device (21) is arranged on one side of the feeding platform (213), the other side of the feeding platform (213) is connected with the incineration hearth (22), an ash falling air inlet bin (26) is arranged below the grate device (23), the ash falling air inlet bin (26) is of a hollow inverted trapezoidal platform structure, the upper opening of the ash falling air inlet bin (26) is connected with the grate device (23), an ash falling opening is arranged at the bottom of the ash falling air inlet bin (26), a first ash discharge valve (262) is arranged on the ash falling opening, a primary air inlet (261) is arranged on the side surface of the ash falling air inlet bin (26), and is communicated with the incineration hearth (22) through the upper opening of the ash falling air inlet bin (26) and the grate device (23), the lower end of the grate device (23) is provided with a slag falling channel (222), and a slag discharging device (27) is arranged below the slag falling channel (222).
4. The household garbage pyrolysis gasification incineration grate furnace of claim 3, wherein the slag discharging device (27) comprises a housing (271), a slag discharging driving device (272), a slag discharging driving link mechanism (273) and a slag discharging push rod (274), the housing (271) is U-shaped, the housing (271) is connected with the slag falling channel (222), the top of the housing (271) is provided with a slag falling hole communicated with the slag falling channel (222), the slag discharging driving device (272), the slag discharging driving link mechanism (273) and the slag discharging push rod (274) are sequentially connected and mounted on a driving side of the housing (271), the slag discharging driving device (272) and the slag discharging driving link mechanism (273) are mounted outside the housing (271), the slag discharging push rod (274) is mounted in the housing (271), a side of the housing (271), which is opposite to the driving side of the housing (271), is a non-driving side of the housing (271), the non-driving side of the shell (271) is provided with a slag outlet.
5. The household garbage pyrolysis gasification incineration grate furnace of claim 3, wherein the grate device (23) comprises a grate support, a grate driving device, a grate pressing device (235) and a material layer control device (236), the grate comprises a movable grate segment (232) and a static grate segment (233), the movable grate segment (232) and the static grate segment (233) are arranged at intervals, primary air holes are formed in the movable grate segment (232) and the static grate segment (233), the grate support comprises a side wall plate (2311), a fixed cross beam (2312), a movable cross beam (2313) and a support (2314), a hollow layer is arranged in the middle of the side wall plate (2311), ventilation holes are formed in the planes of the upper side and the lower side of the hollow layer, a primary air inlet (261) is communicated with the incineration hearth (22) through an upper opening and the ventilation holes and is used for conveying primary air into the incineration hearth (22), the fixed cross beam (2312) is arranged between the two side wall plates (2311), the movable cross beam (2313) and the fixed cross beam (2312) are arranged at intervals, the static fire grate segment (233) is installed on the fixed cross beam (2312), the movable fire grate segment (232) is installed on the movable cross beam (2313), the fire grate pressing device (235) is installed at the low end of the fire grate device (23), and a material layer control device (236) is arranged behind the fire grate pressing device (235).
6. The household garbage pyrolysis and gasification incinerator grate furnace according to claim 1, characterized in that the household garbage pyrolysis and gasification incinerator grate furnace further comprises a feeding system, the feeding system comprises a feeding hopper (11) and a feeding chute (12), the feeding hopper (11) is connected with the feeding chute (12), a feeding device (14) is installed below the feeding chute (12), the feeding device (14) is connected with the feeding port, the feeding chute (12) adopts a water-cooling jacket structure, a sealing door (13) and a fireproof water spraying device (15) are arranged on the feeding chute (12), the fireproof water spraying device (15) is connected with a water pump through a pipeline, and the waterproof fire spraying device (15) is used for spraying water into the feeding chute (12).
7. The system for treating the household garbage pyrolytic gasification incinerator grate furnace, which is characterized by comprising the household garbage pyrolytic gasification incinerator grate furnace, a waste heat utilization system, a flue gas purification system and a flue gas discharge system, wherein the waste heat utilization system comprises a waste heat utilization device (31) and a denitration device (33), the denitration device (33) comprises a liquid spraying pool (331), a liquid spraying pump (332) and a nozzle (333), the liquid spraying pool (331) is used for containing liquid for denitration, the liquid spraying pool (331) is sequentially connected with the liquid spraying pump (332) and the nozzle (333) through a pipeline, the nozzle (333) is installed on the waste heat utilization device (31), a flue gas inlet of the waste heat utilization device (31) is connected with a flue gas outlet of the secondary combustion chamber (25), and a flue gas outlet of the waste heat utilization system is connected with a flue gas inlet of the flue gas purification system, the flue gas outlet of the flue gas purification system is connected with the flue gas discharge system.
8. The treatment system according to claim 7, wherein the household garbage pyrolysis gasification incineration grate furnace and the treatment system further comprise an exhaust gas liquid treatment device (9), a percolate spray nozzle (251) is arranged in the secondary combustion chamber (25), the exhaust gas liquid treatment device (9) comprises two parts of waste liquid treatment and exhaust gas treatment, the waste liquid treatment part is respectively communicated with the percolate pool and the percolate spray nozzle (251), and the percolate spray nozzle (251) is used for spraying percolate into the secondary combustion chamber (25); the waste gas treatment part is used for communicating the pretreatment area with an air preheater (32), a primary air inlet (261) and a secondary air inlet pipe (253), the air preheater (32) is connected with a waste heat utilization device (31), the waste heat utilization device (31) is used for providing a heat source for the air preheater (32), the waste gas treatment part preheats waste odor and peculiar smell air in the pretreatment area through the air preheater (32), and air is supplied to the incineration hearth (22) and the secondary combustion chamber (25) through the primary air inlet and the secondary air inlet pipe respectively.
9. The treatment system according to claim 7, wherein the denitration device is an SNCR denitration device, the flue gas purification system comprises a deacidification cooling device (4), an adsorption purification device (5), a flue gas dedusting system (6) and an SCR denitration system (7), a flue gas inlet of the deacidification cooling device (4) is connected with a flue gas outlet of the waste heat utilization system, a flue gas outlet of the deacidification cooling device (4) is connected with a flue gas inlet of the adsorption purification device (5), a flue gas inlet of the flue gas dedusting system (6) is connected with a flue gas outlet of the adsorption purification device (5), a flue gas outlet of the flue gas dedusting system (6) is connected with a flue gas inlet of the SCR denitration system (7), and a flue gas outlet of the SCR denitration system (7) is connected with a flue gas discharge system.
CN202010181939.8A 2020-03-16 2020-03-16 Household garbage pyrolysis gasification incineration grate furnace and treatment system thereof Pending CN111256147A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112555842A (en) * 2020-12-22 2021-03-26 华中科技大学 Continuous and stable full-sealed oxygen-free garbage disposal system
CN112628739A (en) * 2020-12-16 2021-04-09 苏州乔发环保科技股份有限公司 Garbage fly ash carbonization furnace
CN113048488A (en) * 2021-04-15 2021-06-29 重庆三峰卡万塔环境产业有限公司 Biomass fuel feeding system
CN115342357A (en) * 2022-08-22 2022-11-15 光大环境科技（中国）有限公司 Water-cooling incineration grate furnace device of small-sized modularized multi-garbage cooperative treatment system and operation process thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628739A (en) * 2020-12-16 2021-04-09 苏州乔发环保科技股份有限公司 Garbage fly ash carbonization furnace
CN112555842A (en) * 2020-12-22 2021-03-26 华中科技大学 Continuous and stable full-sealed oxygen-free garbage disposal system
CN113048488A (en) * 2021-04-15 2021-06-29 重庆三峰卡万塔环境产业有限公司 Biomass fuel feeding system
CN115342357A (en) * 2022-08-22 2022-11-15 光大环境科技（中国）有限公司 Water-cooling incineration grate furnace device of small-sized modularized multi-garbage cooperative treatment system and operation process thereof

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