CN210568447U - Grate garbage pyrolysis gasification combustion integrated system - Google Patents
Grate garbage pyrolysis gasification combustion integrated system Download PDFInfo
- Publication number
- CN210568447U CN210568447U CN201922252273.6U CN201922252273U CN210568447U CN 210568447 U CN210568447 U CN 210568447U CN 201922252273 U CN201922252273 U CN 201922252273U CN 210568447 U CN210568447 U CN 210568447U
- Authority
- CN
- China
- Prior art keywords
- grate
- garbage
- combustion
- gasification
- pyrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
Abstract
The utility model relates to a grate rubbish pyrolysis gasification burning integration system, including receiving hopper, grate, furnace, exhaust-heat boiler, plenum, flue gas circulating fan, primary air fan, overfire air fan. The garbage enters a drying area from a receiving hopper, the dried garbage enters a pyrolysis gasification area, the garbage is pyrolyzed and gasified in an anoxic state and is decomposed into combustible substances such as carbon monoxide, gaseous hydrocarbons and the like to form mixed flue gas, and the mixed flue gas is combusted in a hearth; and the residues after pyrolysis and gasification enter a combustion zone and an after-burning zone to be fully combusted, the heat source for garbage drying and pyrolysis and gasification comes from flue gas with the temperature of 200-600 ℃ in a waste heat boiler, and combustion air of the residues comes from a garbage pool. The gasification and combustion integrated garbage treatment method has the advantages that the gasification and combustion integrated garbage treatment method can reduce harmful substances generated by garbage incineration, reduce the excessive air coefficient of garbage combustion, reduce the smoke emission loss and improve the heat efficiency.
Description
Technical Field
The utility model relates to a refuse treatment technical field especially relates to a grate rubbish pyrolysis gasification burning integration system.
Background
The garbage incineration power generation is an effective technology for garbage harmlessness, reduction and recycling. At present, the waste incineration power generation becomes a main method for treating urban waste in China. By the end of 2018, 439 waste incineration power generation projects are put into production in 28 provinces (regions and cities) in China, at present, domestic waste incineration equipment mainly comprises a grate furnace and a fluidized bed furnace, the waste heat value is improved along with the rise of the living standard, a feeding system with tight grate furnace and stable operation hours enable the grate furnace to occupy more than 75% of the waste incineration power plant.
At present, the direct incineration of the garbage can generate toxic and carcinogenic substances such as dioxin and furan, and harmful substances such as hydrogen chloride (Hcl), sulfur oxide (SOx), nitrogen oxide (NOx) and the like. In order to reduce the emission of harmful substances, a large amount of activated carbon, hydrated lime and ammonia water must be consumed in the flue gas treatment system. Because the generation of dioxin and furan is not reduced from the source, people worry about serious environmental hazard caused by the fact that a flue gas treatment system does not normally operate.
The existing vertical garbage pyrolysis gasification furnace has the problems of unsatisfactory pyrolysis gasification effect and incomplete combustion of residues.
Disclosure of Invention
In order to solve the problem, the utility model provides a grate waste pyrolysis gasification burning integrated system reduces the virulent material that msw incineration produced, makes msw incineration complete.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a fire grate garbage pyrolysis gasification combustion integrated system comprises a fire grate, wherein the fire grate comprises a feeding fire grate, a first section fire grate, a second section fire grate and a third section fire grate, and the feeding fire grate, the first section fire grate, the second section fire grate and the third section fire grate are sequentially obliquely arranged from top to bottom; the outlet end of the receiving hopper is connected with the feeding grate, and the inlet end of the receiving hopper is connected with a garbage pool. The air chamber is arranged at the bottom of the fire grate; the furnace hearth is arranged above the fire grates, the upper part of the furnace hearth is connected with a waste heat boiler, and the end parts of the three sections of fire grates are provided with discharge channels; one end of the smoke circulating fan is connected with the waste heat boiler through a pipeline, and the other end of the smoke circulating fan is respectively connected with air chambers at the bottoms of the first section of grate and the second section of grate through pipelines; one end of the primary fan is connected with the garbage pool through a pipeline, and the other end of the primary fan is connected with an air chamber at the bottom of the three sections of grates through a pipeline; the secondary fan is connected with an air nozzle through a pipeline, and the air nozzle is arranged in the hearth.
By adopting the technical scheme, garbage in the garbage pool is put into a receiving hopper, the garbage enters a feeding grate at the bottom from the receiving hopper, the feeding grate pushes the garbage to a first-section grate which is a drying area, the dried garbage enters a second-section grate which is a pyrolysis gasification area, a garbage drying and pyrolysis gasification heat source is flue gas with the temperature of 200-600 ℃ from a waste heat boiler, the flue gas is extracted from the waste heat boiler through a flue gas circulating fan and is circulated to an air chamber at the bottom of the first-section grate and the second-section grate, the garbage is dried and thermally decomposed by passing through the first-section grate and the second-section grate through the air chamber, the garbage is pyrolyzed, gasified and decomposed into combustible substances such as carbon monoxide, gaseous hydrocarbons and the like under the anoxic state to form mixed flue gas, the flue gas is mixed and combusted with air sent by a secondary fan in a hearth, and residues (liquid tar, purer carbon, inorganic dust, inert substances and the like, the three-section grate is divided into a combustion area and a burnout area, air for garbage combustion comes from air in the garbage pool, and air in the garbage pool is pumped by a primary fan and conveyed to an air chamber at the bottom of the three-section grate to enter the three-section grate to provide combustion support for garbage. The utility model discloses a benzene class material converts the combustible mixed gas of micromolecule in with rubbish, reduces rubbish direct combustion by a wide margin and produces the fatal material such as dioxin, furan that contains the hypertoxic, simultaneously because of lacking oxygen and relative microthermal gasification treatment, hydrogen chloride Hcl, oxysulfide SOx, nitrogen oxide NOx's production chance also reduces widely. The gasification and combustion integrated garbage treatment method can reduce the excessive air coefficient of garbage combustion, reduce the smoke emission loss and improve the heat efficiency.
Preferably, the grate is a primary grate or a multi-stage grate.
More preferably, the first-stage grate is a drying zone, the second-stage grate is a pyrolysis gasification zone, and the third-stage grate is divided into a combustion zone and an after-burning zone.
By adopting the technical scheme, the first section of the grate is a drying area, and the water in the garbage is removed by drying through high-temperature flue gas; the second-stage fire grate is a pyrolysis gasification area, macromolecular substances in the garbage are converted into combustible gas of small-molecular gas, and the combustible gas and the air sprayed into the hearth are mixed and combusted, so that the combustion efficiency is improved, and the pollution is low; the three sections of grates are a combustion area and an after-burning area, and residues after pyrolysis and gasification enter the combustion area for combustion and then enter the after-burning area for further complete combustion.
Preferably, the heat sources of the drying zone and the pyrolysis gasification zone are flue gas of the waste heat boiler.
By adopting the technical scheme, the garbage drying and pyrolysis gasification heat source is from flue gas at the temperature of 200-600 ℃ of a waste heat boiler, and the garbage is dried, pyrolyzed and gasified through the high-temperature flue gas, so that the garbage can be decomposed into combustible substances such as carbon monoxide, gaseous hydrocarbons and the like, and mixed flue gas is formed.
Preferably, the combustion air of the combustion zone and the burnout zone comes from a garbage pool.
By adopting the technical scheme, the air in the garbage pool is extracted to enter the three-section fire grate and the residue after pyrolysis and gasification is combusted, so that the residue is completely combusted, and meanwhile, the odor air in the garbage pool is extracted, and the environment pollution is avoided.
Preferably, the flue gas circulating fan, the primary fan and the secondary fan are variable frequency fans.
By adopting the technical scheme, the stepless speed regulation of the fan can be realized through the variable frequency fan.
The utility model has the advantages that:
1. the gasification and combustion integrated garbage treatment method can reduce the excessive air coefficient of garbage combustion, reduce the smoke emission loss and improve the heat efficiency.
2. Low treatment cost, high garbage utilization rate, high power generation efficiency and less smoke discharge.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Shown in the figure: 1-a garbage pool; 2-a waste heat boiler; 3-a receiving hopper; 41-a feeding grate; 42-a section of grate; 43-two-stage grate; 44-three sections of grates; 5-an air chamber; 6-hearth; 7-a flue gas circulating fan; 8-a primary air fan; 9-a secondary air fan; 91-wind nozzle.
Detailed Description
As shown in fig. 1, an embodiment of the utility model provides a grate rubbish pyrolysis gasification burning integration system, including grate, furnace 6, exhaust-heat boiler 2, gas circulation fan 7, primary air fan 8 and overfire air fan 9, the dog-house has been seted up to 1 one side in rubbish pond, and the vehicle that transports rubbish puts in rubbish from the dog-house and gets into rubbish pond 1, and rubbish in the rubbish pond 1 is grabbed on receiving hopper 3, and the process is received hopper 3 and is entered into the grate and arrange.
The fire grates comprise a feeding fire grate 41, a first section fire grate 42, a second section fire grate 43 and a third section fire grate 44, the feeding fire grate 41, the first section fire grate 42, the second section fire grate 43 and the third section fire grate 44 are sequentially arranged in an inclined mode from high to low, an air chamber 5 is arranged at the bottom of the fire grates, a hearth 6 is arranged above the fire grates, the air chamber 5 is communicated with the fire grates, the feeding fire grate 41 is arranged at the bottom of the material receiving hopper 3, in the embodiment, the first section fire grate 42 is a drying area, dried garbage enters the second section fire grate 43, the second section fire grate 43 is a pyrolysis gasification area, and flue gas generated by pyrolysis gasification enters the; the three-stage grate 44 is divided into a combustion zone and an after-burning zone, and the garbage gasified by pyrolysis enters the three-stage grate 44 for full combustion.
The air chamber 5 at the bottom of the first-stage grate 42 and the second-stage grate 43 is connected with one end of a flue gas circulating fan 7, the other end of the flue gas circulating fan 7 is connected with the waste heat boiler 2, the flue gas circulating fan 7 pumps flue gas in the waste heat boiler 2 into the first-stage grate 42 and the second-stage grate 43, high-temperature flue gas passes through the grates to dry, pyrolyze and gasify garbage and then enters the hearth 6, a secondary fan 9 is arranged outside the hearth 6 and is connected with an air nozzle 91 through a pipeline, a spraying port of the air nozzle 91 is arranged in the hearth 6, the secondary fan 9 pumps external air to spray into the hearth 6 to mix with the flue gas in the hearth 6, and the flue gas and air; the air chamber 5 at the bottom of the three-section grate 44 is connected with one end of a primary fan 8, the other end of the primary fan 8 is connected with the garbage pool 1, and the primary fan 8 pumps air in the garbage pool 1 and sends the air into the three-section grate 44 to be combusted with garbage.
In an embodiment, the heat sources of the drying zone and the pyrolysis gasification zone are flue gas from the waste heat boiler 2, and the flue gas of the waste heat boiler 2 is extracted by the flue gas circulating fan 7 to enter the drying zone and the pyrolysis gasification zone for drying and pyrolysis gasification.
In one embodiment, the combustion air of the combustion zone and the burn-out zone comes from the garbage pool 1, and the air of the garbage pool 1 is extracted by the primary fan 8 to enter the combustion zone and the burn-out zone for combustion.
In one embodiment, the flue gas recirculation fan 7, the primary fan 8 and the secondary fan 9 are variable frequency fans.
The utility model discloses an operating principle, get into the rubbish of hopper 3, at first dry by the high temperature flue gas in the drying zone, get rid of the moisture of rubbish, dry rubbish gets into pyrolysis gasification district, the high temperature flue gas further heats rubbish, because the flue gas oxygen content is low, the direct burning of rubbish has been suppressed, be transformed into the combustible gas of micro molecule gas (hydrogen, carbon monoxide, methane and other hydrocarbons etc.) with macromolecular substance in the rubbish, combustible gas and the overgrate air co-combustion who spouts furnace 6, combustible gas combustion efficiency is high, pollute for a short time.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The utility model provides a grate rubbish pyrolysis gasification burning integration system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the grate comprises a feeding grate, a first-section grate, a second-section grate and a third-section grate, wherein the feeding grate, the first-section grate, the second-section grate and the third-section grate are sequentially obliquely arranged from top to bottom;
the outlet end of the receiving hopper is connected with the feeding grate;
the air chamber is arranged at the bottom of the fire grate;
the furnace hearth is arranged above the fire grates, the upper part of the furnace hearth is connected with a waste heat boiler, and the end parts of the three sections of fire grates are provided with discharge channels;
one end of the smoke circulating fan is connected with the waste heat boiler through a pipeline, and the other end of the smoke circulating fan is respectively connected with air chambers at the bottoms of the first section of grate and the second section of grate through pipelines;
one end of the primary fan is connected with the garbage pool through a pipeline, and the other end of the primary fan is connected with an air chamber at the bottom of the three sections of grates through a pipeline;
the secondary fan is connected with an air nozzle through a pipeline, and the air nozzle is arranged in the hearth.
2. The integrated system for the pyrolysis, gasification and combustion of grate garbage according to claim 1, wherein: the fire grate is a first-stage fire grate or a multi-stage fire grate.
3. The integrated system for the pyrolysis, gasification and combustion of grate garbage according to claim 1, wherein: the first-stage grate is a drying zone, the second-stage grate is a pyrolysis gasification zone, and the third-stage grate is divided into a combustion zone and an after-burning zone.
4. The integrated system of claim 3, wherein the grate waste pyrolysis gasification combustion comprises: and the heat sources of the drying area and the pyrolysis gasification area are from flue gas of the waste heat boiler.
5. The integrated system of claim 3, wherein the grate waste pyrolysis gasification combustion comprises: and the combustion air of the combustion zone and the burnout zone comes from a garbage pool.
6. The integrated system for the pyrolysis, gasification and combustion of grate garbage according to claim 1, wherein: the flue gas circulating fan, the primary fan and the secondary fan are variable frequency fans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922252273.6U CN210568447U (en) | 2019-12-16 | 2019-12-16 | Grate garbage pyrolysis gasification combustion integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922252273.6U CN210568447U (en) | 2019-12-16 | 2019-12-16 | Grate garbage pyrolysis gasification combustion integrated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210568447U true CN210568447U (en) | 2020-05-19 |
Family
ID=70661408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922252273.6U Active CN210568447U (en) | 2019-12-16 | 2019-12-16 | Grate garbage pyrolysis gasification combustion integrated system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210568447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685817A (en) * | 2021-08-11 | 2021-11-23 | 生态环境部华南环境科学研究所 | Three-section type waste incineration system and method |
-
2019
- 2019-12-16 CN CN201922252273.6U patent/CN210568447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685817A (en) * | 2021-08-11 | 2021-11-23 | 生态环境部华南环境科学研究所 | Three-section type waste incineration system and method |
| CN113685817B (en) * | 2021-08-11 | 2023-08-25 | 生态环境部华南环境科学研究所 | Three-section type garbage incineration system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102322630B (en) | Method and devices for burning macromolecular matters efficiently and cleanly | |
| WO2016023412A1 (en) | Vertical negative pressure garbage dry-distillation incinerator free of dioxin-production and waste gas emission | |
| CN102472486B (en) | Waste management system | |
| CN203791331U (en) | System for synergistic treatment of municipal domestic waste in cement kiln | |
| CN103934254B (en) | A kind of system and method for cement kiln associated treatment domestic waste | |
| CN101650025B (en) | Decoupling combustion furnace and decoupling combustion method | |
| CN102746903A (en) | Large-scale domestic garbage dry distillation and gasification furnace without exhaust gas or dioxin emission | |
| CN106949480A (en) | A kind of pyrogenation incinerator | |
| CN102705832B (en) | Solid waste incinerator without emission of flue gas | |
| CN207831356U (en) | A kind of processing unit applied to the gasification of villages and small towns domestic garbage pyrolysis | |
| CN204786347U (en) | Biomass gasification phase separating combustion furnace | |
| CN210568447U (en) | Grate garbage pyrolysis gasification combustion integrated system | |
| CN203096002U (en) | Substitute fuel gasification device for circulating fluidized bed of cement kiln | |
| CN104315519B (en) | Low-pollution self-cleaning combustion method and device for high-nitrogen content combustible waste | |
| CN206944167U (en) | The system for reducing waste incinerator discharged nitrous oxides | |
| CN110486728A (en) | A kind of novel household garbage pyrolyzing, gasifying and incinerating system | |
| CN204786428U (en) | Multicavity room domestic waste pyrolysis treatment complete sets | |
| CN105664690A (en) | System for performing denitration on cement decomposing furnace through coal gas generator | |
| CN102705831A (en) | Solid waste incinerator body | |
| CN112944351B (en) | Household garbage pyrolysis gasification incineration system and process | |
| CN206191597U (en) | Small -size rural garbage pyrolytic gasification equipment | |
| CN115200024A (en) | Low-nitrogen oxygen-enriched efficient and clean waste incineration system and method | |
| CN214619559U (en) | Heat accumulation burning garbage pyrolysis gasification device | |
| CN1246632C (en) | Pollutionless garbage burning method of heat carrying circulation tunnel kiln | |
| CN205261570U (en) | Double -deck mechanical stoker formula waste gasification burns burning furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |