CN114656987A - Low-pressure high-temperature steam thermal cracking carbonization system for garbage treatment - Google Patents
Low-pressure high-temperature steam thermal cracking carbonization system for garbage treatment Download PDFInfo
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- CN114656987A CN114656987A CN202210431175.2A CN202210431175A CN114656987A CN 114656987 A CN114656987 A CN 114656987A CN 202210431175 A CN202210431175 A CN 202210431175A CN 114656987 A CN114656987 A CN 114656987A
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
- C10B49/04—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated
- C10B49/08—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form
- C10B49/10—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form according to the "fluidised bed" technique
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B51/00—Destructive distillation of solid carbonaceous materials by combined direct and indirect heating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
Abstract
The invention discloses a low-pressure high-temperature steam pyrolysis carbonization system for garbage treatment, which comprises a steam generation chamber, a drying chamber and a carbonization chamber, wherein a spiral feeding device is arranged at the inlet end of the drying chamber, a spiral discharging device is arranged at the outlet end of the drying chamber, and the outlet end of the spiral discharging device is communicated with the carbonization chamber; the steam generation chamber is internally provided with a steam generation device, the steam generation chamber is connected with a superheater, and the outlet end of the superheater is communicated with the inside of the drying chamber. The spiral feeding device penetrates through the steam generating chamber and can absorb the heat energy of the steam generating chamber. The invention adopts the superheated steam to dry the garbage, has the advantages of high drying speed, good drying quality, good safety, reduced equipment volume and waste gas discharge, environmental protection, sterilization and disinfection effects and the like, can improve the overall temperature of the garbage, is favorable for carbonizing the garbage in a carbonization chamber and obtaining the biochar, and realizes the cyclic utilization of resources.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a low-pressure high-temperature steam pyrolysis carbonization system for garbage treatment.
Background
Urban domestic garbage is one of the most serious environmental problems in cities in China at present, and how to effectively treat the urban domestic garbage becomes the focus of attention of governments and the public. The domestic garbage is not only a waste, but also organic substances in the garbage are important renewable resources. The disposal of household waste is not only an important environmental problem, but also a resource recycling problem. At present, the harmless treatment of domestic garbage mainly comprises a composting method, a landfill method and an incineration method.
The composting method is to degrade organic matters in the garbage by microorganisms aerobically or anaerobically, and the final product humus can be used as a fertilizer or a soil conditioner. The method has the advantages of low technical content and strong practicability, can reduce the amount of wastes by more than 40 percent, but has low product quality as a fertilizer, large floor area and long treatment period, and can cause secondary pollution such as percolate, odor and the like in the composting process.
The landfill method is a process for converting organic substances in the domestic garbage into methane and carbon dioxide by utilizing the principle of microbial anaerobic fermentation. Namely, impermeable materials are laid at the depression, the large pit, the slope and the bottom surface, an air guide system is arranged in the garbage, so that gas generated in the fermentation process can be smoothly discharged and utilized, and a drainage pipeline is laid at the bottom to discharge generated percolate which reaches the standard after being treated. The method has the advantages that: large treatment capacity, simple operation, strong adaptability and the like. The disadvantages are: large occupied area, waste of land resources and treatment cost increase of leachate treatment.
The incineration method is a more traditional treatment method, the incineration temperature is controlled to be about 850 ℃, and the volume of the incinerated garbage can be reduced by more than 90%. The waste incineration is usually combined with high-temperature thermal decomposition and melting treatment to further reduce the quantity so as to facilitate landfill, save land, eliminate various pathogenic bacteria, make the waste harmless and recover heat energy. However, the grate furnace or the circulating fluidized bed furnace is generally selected for the burning method, such devices have the characteristics of large investment, high operation cost and the like in the use process, a large amount of pollutants such as acid gas, dioxin and the like are easily generated in the burning process, and the flue gas contains more fly ash, so that secondary pollution is easily caused to the whole environment. Therefore, how to overcome the defects of the prior art is a problem which needs to be solved urgently in the technical field of garbage treatment at present.
Disclosure of Invention
The invention aims to provide a low-pressure high-temperature steam pyrolysis carbonization system for garbage treatment, which solves the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a low-pressure high-temperature steam thermal cracking carbonization system for garbage treatment comprises a steam generation chamber, a drying chamber and a carbonization chamber, wherein a spiral feeding device is arranged at the inlet end of the drying chamber, a spiral discharging device is arranged at the outlet end of the drying chamber, and the outlet end of the spiral discharging device is communicated with the carbonization chamber; a steam generating device is arranged in the steam generating chamber, the steam generating chamber is connected with a superheater, and the outlet end of the superheater is communicated with the inside of the drying chamber; the spiral feeding device penetrates through the steam generating chamber, and the spiral feeding device can absorb the heat energy of the steam generating chamber.
As an alternative of the present invention, the steam generating device includes an electric heating tube wound on an outer wall of the spiral feeding device and extending along a length direction of the spiral feeding device, and the electric heating tube is used for heating water in the steam generating chamber to generate steam.
As an alternative of the present invention, a piston is disposed in the steam generating chamber, a first cavity and a second cavity are disposed on two sides of the piston, respectively, a steam generating device is disposed in the first cavity, and a pushing device is disposed in the second cavity and used for pushing the piston to move, so that the piston compresses the second cavity.
As an alternative of the present invention, the pushing device includes a pushing screw, the steam generating chamber is provided with a threaded hole adapted to the pushing screw, one end of the pushing screw is connected to a rotary connector, the rotary connector is fixed on the piston, and one end of the pushing screw passes through the threaded hole and is connected to a rotary handle.
As an alternative of the present invention, the drying chamber is provided with a catalyst adding device for adding a catalyst including aluminum hydroxide, urea, kaolin and diatomaceous earth into the drying chamber.
As an alternative scheme of the invention, a stirring device is arranged in the drying chamber, the stirring device comprises a stirring shaft, the stirring shaft is connected with a stirring driving mechanism, auger blades and a plurality of stirring rods are arranged on the surface of the stirring shaft, scrapers attached to the inner wall of the drying chamber are arranged at the end parts of the plurality of stirring rods, and the scrapers at the end parts of two adjacent stirring rods are arranged in a staggered manner.
As an alternative of the invention, the scraper comprises a rubber scraper blade and a clamping plate, one side of the clamping plate is connected with the stirring shaft, and the other side of the clamping plate is connected with the rubber scraper blade.
As an alternative of the invention, an annular superheated steam injection pipe is arranged at the bottom of the drying chamber, a plurality of spray heads are arranged on the superheated steam injection pipe, and a superheated steam output pipe is connected between the outlet end of the superheater and the superheated steam injection pipe.
As an alternative scheme of the invention, a steam recovery pipe is connected between the top of the drying chamber and the steam generation chamber, and a dust removal device and a one-way valve are arranged on the steam recovery pipe.
As an alternative of the invention, the carbonization chamber is connected with a gas collecting chamber, and the gas collected by the gas collecting chamber is used as the combustion gas of the carbonization chamber.
The invention has the beneficial effects that:
the invention provides a low-pressure high-temperature steam pyrolysis carbonization system for garbage treatment, wherein a spiral feeding device penetrates through a steam generation chamber, so that the spiral feeding device can directly absorb the heat of the steam generation chamber, the garbage in the spiral feeding device is preheated, the preheated garbage enters a drying chamber, the garbage is dried by superheated steam output by a superheater, and the dried garbage enters a carbonization chamber to realize carbonization. The invention adopts the superheated steam to dry the garbage, has the advantages of high drying speed, good drying quality, good safety, reduced equipment volume and waste gas discharge, environmental protection, sterilization and disinfection, and the like, can improve the overall temperature of the garbage, is favorable for carbonizing the garbage in a carbonization chamber and obtaining the biochar, and realizes the recycling of resources.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic view of the structure of a drying chamber in an embodiment of the present invention.
In the figure: 1-a steam generating chamber; 2-a drying chamber; 3-a carbonization chamber; 4-a screw feeder; 5-a spiral discharging device; 6-a superheater; 7-electric heating tubes; 8-a piston; 9-a first cavity; 10-a second cavity; 11-a pushing device; 12-a catalyst addition device; 13-a stirring device; 14-a stirring shaft; 15-a stirring driving mechanism; 16-auger blade; 17-a stirring rod; 18-a squeegee blade; 19-a clamping plate; 20-superheated steam injection pipe; 21-a spray head; 22-superheated steam output pipe; 23-a steam recovery pipe; 24-dust removing device.
Detailed Description
Examples
As shown in fig. 1 and fig. 2, this embodiment provides a low-pressure high-temperature steam pyrolysis carbonization system for garbage disposal, including steam generation chamber 1, drying chamber 2 and carbonization chamber 3, steam generation chamber 1 is used for producing high-temperature steam, and high-temperature steam can carry out drying process to garbage, is convenient for the thermal cracking carbonization of garbage.
The entry end of drying chamber 2 is equipped with spiral feed arrangement 4, and spiral feed arrangement 4 is equipped with the pan feeding mouth, and rubbish is added from the pan feeding mouth, and through spiral feed arrangement 4 input to drying chamber 2. The exit end of drying chamber 2 is equipped with spiral discharging device 5, spiral discharging device 5's exit end with carbomorphism room 3 intercommunication, the rubbish after the drying is discharged from the exit end of drying chamber 2 to in helical discharging device 5 inputs carbomorphism room 3, rubbish can carry out high temperature carbomorphism in carbomorphism room 3, can obtain the pyrolysis coke at last. The steam generation chamber 1 is sleeved on the outer side of the spiral feeding device 4, the spiral feeding device 4 penetrates through the steam generation chamber 1, the heat energy of the steam generation chamber 1 can be transmitted to the spiral feeding device 4, the outer wall of the spiral feeding device 4 is cylindrical, and the steam generation chamber 1 is sleeved outside the spiral feeding device 4, so that the spiral feeding device 4 can directly absorb the heat energy of the steam generation chamber 1, and the garbage preheating treatment in the spiral feeding device 4 is realized. The invention makes full use of energy and saves the carbonization cost of garbage.
A steam generating device is arranged in the steam generating chamber 1, the steam generating chamber 1 is connected with a superheater 6, and the outlet end of the superheater 6 is communicated with the interior of the drying chamber 2. High-temperature steam generated by the steam generating device is input into the superheater 6, superheated steam can be obtained after being heated by the superheater 6, and the superheated steam is conveyed into the drying chamber 2 to realize the drying treatment of the garbage.
The invention provides a low-pressure high-temperature steam pyrolysis carbonization system for garbage treatment, wherein a spiral feeding device 4 penetrates through a steam generation chamber 1, so that the spiral feeding device 4 can directly absorb the heat of the steam generation chamber 1, the garbage in the spiral feeding device 4 is preheated, the preheated garbage enters a drying chamber 2, the superheated steam output by a superheater 6 is used for drying the garbage, and the dried garbage enters a carbonization chamber 3 for carbonization. The invention adopts the superheated steam to dry the garbage, has the advantages of high drying speed, good drying quality, good safety, reduced equipment volume and waste gas discharge, environmental protection, sterilization and disinfection, and the like, can improve the overall temperature of the garbage, is favorable for carbonizing the garbage in a carbonization chamber and obtaining the biochar, and realizes the recycling of resources.
As shown in fig. 1, the steam generating device includes an electric heating tube 7, the electric heating tube 7 is wound on the outer wall of the spiral feeding device 4 and extends along the length direction of the spiral feeding device 4, the electric heating tube 7 is used for heating the water in the steam generating chamber 1 to generate steam, and meanwhile, the spiral feeding device 4 can directly absorb the heat of the electric heating tube 7, and the heat is transferred to the garbage in the spiral feeding device 4, so that the preheating function of the garbage is realized, and the treatment efficiency of the garbage can be accelerated.
The steam generating chamber 1 is internally provided with a piston 8, two sides of the piston 8 are respectively provided with a first cavity 9 and a second cavity 10, a steam generating device is arranged in the first cavity 9, the second cavity 10 is provided with a pushing device 11, and the pushing device 11 is used for pushing the piston 8 to move so that the piston 8 compresses the second cavity 10 to reduce the pressure of the first cavity 9. The steam generating chamber 1 is rectangular, the first cavity 9 is positioned at the bottom of the second cavity 10, the electric heating tube 7 is arranged in the first cavity 9, meanwhile, a certain amount of water is pre-stored in the first cavity 9, the electric heating tube 7 needs to be submerged by the water, after the electric heating tube 7 is electrified, the water can be heated to generate high-temperature steam, and the high-temperature steam can obtain superheated steam through the superheater 6. The pushing device 11 can push the piston 8 to move up and down, thereby adjusting the volume of the first cavity 9 and the second cavity 10. When sufficient high-temperature steam is generated in the first cavity 9, the piston 8 can be moved upwards through the pushing device 11, the piston 8 compresses the second cavity 10, meanwhile, the volume of the first cavity 9 is increased, the pressure of the first cavity 9 is reduced, the boiling point of water in the first cavity 9 can be reduced, water can generate steam quickly, and energy consumption is reduced.
Specifically, thrust unit 11 is including promoting the screw rod, steam generation room 1 set up with the screw hole of promotion screw rod adaptation, the one end of promoting the screw rod is connected with the swivelling joint head, the swivelling joint head is fixed on piston 8, and the one end that promotes the screw rod is passed the screw hole and is connected with rotatory handle. Rotatory handle and promotion screw rod fixed connection, user's accessible is rotatory to be promoted the screw rod, makes to promote the screw rod and stretches into or stretch out steam generation room 1 to adjust piston 8's position, and then the boiling point of water in the first cavity 9 of adjustment, its simple structure, convenient to use.
In this embodiment, the drying chamber 2 is provided with a catalyst adding device 12, the catalyst adding device 12 is used for adding a catalyst into the drying chamber 2, and after the catalyst and the garbage are mixed in the drying chamber 2, the carbonization process of the garbage can be catalytically regulated and controlled in the carbonization chamber 3, so as to promote the generation of a coke product, thereby improving the yield of the coke product. Preferably, the catalyst comprises aluminum hydroxide, urea, kaolin and diatomaceous earth. The aluminium hydroxide can generate strong endothermic reaction when being heated, and can inhibit the organic matters from being rapidly decomposed, thereby being beneficial to the generation of carbonization reaction, and the aluminium oxide generated by the decomposition of the aluminium hydroxide covers the surface of the garbage, so that the volatilization of the organic matters can be further inhibited, and the carbonization of the organic matters is promoted; in addition, a large amount of free radicals can be generated in the organic matter pyrolysis process, reactions such as rearrangement, cracking, oxidation reduction, polymerization and the like occur among the free radicals to maintain the progress of carbonization reaction, and the endothermic decomposition product of urea in the catalyst can capture the free radicals to inhibit chain reaction of the free radicals, so that the generation of volatile organic matters is inhibited, and the yield of coke is further improved; in addition, the kaolin and the diatomite in the catalyst can synergistically promote the catalytic effect of the aluminum hydroxide and the urea, and are beneficial to the subsequent treatment processes of coke compression molding and the like. The invention can effectively realize the pyrolysis and carbonization of the garbage with high carbon fixation rate, thereby facilitating the reduction treatment of the garbage.
As shown in fig. 2, be equipped with agitating unit 13 in drying chamber 2, agitating unit 13 includes (mixing) shaft 14, (mixing) shaft 14 is connected with stirring actuating mechanism 15, and stirring actuating mechanism 15 adopts servo motor, (mixing) shaft 14 surface is equipped with auger blade 16 and a plurality of puddler 17, and the tip of a plurality of puddlers 17 all is equipped with the scraper blade of laminating with drying chamber 2 inner wall, and the scraper blade dislocation set of two adjacent puddler 17 tip. The auger blade 16 and the stirring rod 17 are mutually matched, which is beneficial to the evaporation of water in the garbage, simultaneously is beneficial to the quick mixing of the garbage and the catalyst, and is beneficial to the generation of a coke product in the carbonization chamber 3. In drying chamber 2, because the scraper blade dislocation set of two adjacent puddler 17 tip, it can strike off and adhere to rubbish and the catalyst at 2 inner walls of drying chamber, can improve the mixing uniformity of rubbish and catalyst, can make 2 inner walls of drying chamber keep clean again.
Specifically, the scraper comprises a rubber scraper blade 18 and a clamping plate 19, one side of the clamping plate 19 is connected with the stirring shaft 14, and the other side of the clamping plate 19 is connected with the rubber scraper blade 18. The rubber scraper 18 does not damage the inner wall of the drying chamber 2 and can effectively scrape the garbage and the catalyst on the inner wall of the drying chamber 2.
An annular superheated steam injection pipe 20 is arranged at the bottom of the drying chamber 2, a plurality of spray heads 21 are arranged on the superheated steam injection pipe 20, and a superheated steam output pipe 22 is connected between the outlet end of the superheater 6 and the superheated steam injection pipe 20. A plurality of shower nozzles 21 can be simultaneously to the inside superheated steam that sprays of drying chamber 2, strengthen the drying effect of rubbish, superheated steam output tube 22 carries the superheated steam that superheater 6 produced to drying chamber 2 in, superheated steam from down up removing in drying chamber 2, rubbish from last down removing in drying chamber 2, make superheated steam can carry out abundant drying to rubbish. A steam recovery pipe 23 is connected between the top of the drying chamber 2 and the steam generation chamber 1, and a dust removal device 24 and a one-way valve are arranged on the steam recovery pipe 23. The steam in the drying chamber 2 is recovered through the steam recovery pipe 23, and the steam is treated by the dust removal device 24 and then returns to the steam generation chamber 1 again, so that the cyclic utilization of water resources is realized.
In this embodiment, a gas collecting chamber is connected to the carbonization chamber 3, and the gas collected in the gas collecting chamber is used as the combustion gas of the carbonization chamber 3. The carbonization chamber 3 is connected with a discharging device, the discharging device is connected with a fertilizer making chamber, and the fertilizer making chamber is provided with a microbial agent adding device and a uniformly mixing device. The coke product (biochar) is a highly aromatic substance obtained by pyrolyzing biomass in an anoxic or anaerobic environment, is loose and porous, has a large surface area, can increase soil organic substances after being applied to soil, can strongly adsorb ammonium, nitrate, phosphate and other water-soluble salt nutrient ions on the large specific surface, effectively regulates the circulation of nutrient elements such as soil N, P, K and the like, and improves the water and fertilizer retention capacity of the soil. The garbage is converted into the biochar, and the biochar is mixed with microorganisms and buried underground, so that the carbon is sealed and stored in soil, the reasonable utilization of the garbage is realized, the problem of global warming is relieved, the resource utilization of the garbage can be safely realized, and the environment benefit, the social benefit and the economic benefit are remarkable.
In the description of the present invention, the terms "mounted," "connected," "fixed," and the like are to be understood broadly and may be fixedly connected, detachably connected, or integrated; may be a mechanical or electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. Those skilled in the art will understand the specific meaning of the above terms in the present invention. Furthermore, the particular features, structures, etc. described in the examples can be included in at least one implementation and can be combined by one skilled in the art without conflicting therewith. The protection scope of the present invention is not limited to the above specific examples, and embodiments that can be imagined by those skilled in the art without creative efforts based on the basic technical concept of the present invention belong to the protection scope of the present invention.
Claims (10)
1. A low-pressure high-temperature steam thermal cracking carbonization system for garbage treatment comprises a steam generation chamber (1), a drying chamber (2) and a carbonization chamber (3), and is characterized in that a spiral feeding device (4) is arranged at the inlet end of the drying chamber (2), a spiral discharging device (5) is arranged at the outlet end of the drying chamber (2), and the outlet end of the spiral discharging device (5) is communicated with the carbonization chamber (3); a steam generating device is arranged in the steam generating chamber (1), the steam generating chamber (1) is connected with a superheater (6), and the outlet end of the superheater (6) is communicated with the inside of the drying chamber (2); the spiral feeding device (4) penetrates through the steam generating chamber (1), and the spiral feeding device (4) can absorb the heat energy of the steam generating chamber (1).
2. The low-pressure high-temperature steam pyrolysis carbonization system for garbage disposal according to claim 1, wherein the steam generation device comprises an electric heating tube (7), the electric heating tube (7) is wound on the outer wall of the spiral feeding device (4) and extends along the length direction of the spiral feeding device (4), and the electric heating tube (7) is used for heating water in the steam generation chamber (1) to generate steam.
3. The low-pressure high-temperature steam thermal cracking carbonization system for garbage disposal according to claim 2, wherein a piston (8) is arranged in the steam generation chamber (1), a first cavity (9) and a second cavity (10) are respectively arranged on two sides of the piston (8), a steam generation device is arranged in the first cavity (9), a pushing device (11) is arranged in the second cavity (10), and the pushing device (11) is used for pushing the piston (8) to move.
4. The low-pressure high-temperature steam thermal cracking carbonization system for garbage disposal according to claim 3, wherein the pushing device (11) comprises a pushing screw, the steam generation chamber (1) is provided with a threaded hole adapted to the pushing screw, one end of the pushing screw is connected with a rotary connector, the rotary connector is fixed on the piston (8), and one end of the pushing screw penetrates through the threaded hole and is connected with a rotary handle.
5. The low-pressure high-temperature steam pyrolysis carbonization system for garbage disposal according to claim 1, wherein the drying chamber (2) is provided with a catalyst adding device (12), the catalyst adding device (12) is used for adding a catalyst into the drying chamber (2), and the catalyst comprises aluminum hydroxide, urea, kaolin and diatomite.
6. The low-pressure high-temperature steam pyrolysis carbonization system for garbage disposal according to claim 5, wherein a stirring device (13) is arranged in the drying chamber (2), the stirring device (13) comprises a stirring shaft (14), the stirring shaft (14) is connected with a stirring driving mechanism (15), the surface of the stirring shaft (14) is provided with an auger blade (16) and a plurality of stirring rods (17), the end parts of the plurality of stirring rods (17) are respectively provided with a scraper attached to the inner wall of the drying chamber (2), and the scrapers at the end parts of the two adjacent stirring rods (17) are arranged in a staggered manner.
7. The low-pressure high-temperature steam thermal cracking carbonization system for garbage disposal according to claim 6, wherein the scraper comprises a rubber scraper (18) and a clamping plate (19), one side of the clamping plate (19) is connected with the stirring shaft (14), and the other side of the clamping plate (19) is connected with the rubber scraper (18).
8. The low-pressure high-temperature steam thermal cracking carbonization system for garbage disposal according to claim 1, wherein the bottom of the drying chamber (2) is provided with an annular superheated steam injection pipe (20), the superheated steam injection pipe (20) is provided with a plurality of spray heads (21), and a superheated steam output pipe (22) is connected between the outlet end of the superheater (6) and the superheated steam injection pipe (20).
9. The low-pressure high-temperature steam thermal cracking carbonization system for garbage treatment according to claim 1, wherein a steam recovery pipe (23) is connected between the top of the drying chamber (2) and the steam generation chamber (1), and the steam recovery pipe (23) is provided with a dust removal device (24) and a one-way valve.
10. The low-pressure high-temperature steam pyrolysis carbonization system for garbage disposal according to claim 1, wherein the carbonization chamber (3) is connected with a gas collection chamber, and the gas collected by the gas collection chamber is used as combustion gas of the carbonization chamber (3).
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