CN211972215U - System for solid heat carrier continuous cycle directly heats domestic waste - Google Patents
System for solid heat carrier continuous cycle directly heats domestic waste Download PDFInfo
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- CN211972215U CN211972215U CN202020105037.1U CN202020105037U CN211972215U CN 211972215 U CN211972215 U CN 211972215U CN 202020105037 U CN202020105037 U CN 202020105037U CN 211972215 U CN211972215 U CN 211972215U
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Abstract
The utility model belongs to domestic waste heat treatment field, concretely relates to system and method of solid heat carrier continuous cycle direct heating domestic waste. The utility model provides a system for directly heating a solid heat carrier, which comprises a solid heat carrier furnace 1, a cyclone separator 2, a blanking device 3, a pyrolysis reactor 4 and a material returning device 5; wherein the pyrolysis reactor 4 and the solid heat carrier furnace 1 are connected with the material returning device 5 through the cyclone separator 2 to form a circulation, and the processes of heating the solid heat carrier and heating the garbage are completed. Domestic waste and heat carrier direct contact have improved heat transfer efficiency in this system, and the heat carrier recycles, reduction in production cost, and the formation volume of pyrolysis process dioxin is nearly zero.
Description
Technical Field
The utility model belongs to domestic waste thermal treatment field, concretely relates to system for solid heat carrier continuous cycle direct heating domestic waste.
Background
At present, the problem of disposing municipal solid waste has become a focus of attention of all people. The existing treatment means aiming at the household garbage comprises technologies such as landfill, composting and incineration, but due to the limitations of the technologies, the pollution to land, water sources and atmosphere is brought, and particularly dioxin generated by incineration poses great threats to the health of human bodies. The pyrolysis technology is a process of cracking organic matters under a high-temperature condition in an oxygen-poor or oxygen-free environment to generate organic gas or tar, no dioxin is generated in the process, and the solid waste is treated by adopting the pyrolysis technology and is more and more emphasized along with the improvement of environmental protection requirements.
In the existing domestic garbage pyrolysis process, indirect heat transfer (such as CN 104560071A) is mostly adopted, or high-temperature flue gas or pyrolysis gas is adopted as a heat carrier to penetrate through a material layer in a pyrolysis furnace to realize heating (CN 106482117A), and the modes all have the problems of uneven heating and easy existence of dead zones, and the energy consumption is high. There is a need to improve the heating mode of the pyrolysis process of the domestic garbage, provide the required heat, realize uniform heating, and ensure the anaerobic or anoxic condition of the pyrolysis environment in the pyrolysis process. There are patents which provide (CN101350582A) method and apparatus for fast pyrolysis of coal, but the material return section of the circulating ash is set to 2-way, and a hot ash distributor is required to be configured to distribute the pyrolysis circulating ash, so as to adjust the matching problem of combustion heat and heat required by pyrolysis, and the apparatus is complex.
Disclosure of Invention
The utility model aims to provide a: the system and the method solve the problems in the prior art to a certain extent, overcome the defects of low pyrolysis efficiency, high energy consumption and complex device in the prior art, and provide the system and the method for directly heating the domestic garbage by continuously circulating the solid heat carrier in the garbage pyrolysis process. The cost of domestic garbage treatment is reduced, and the harmless and recycling treatment of the domestic garbage can be realized, so that the economic benefit and the social benefit are realized.
The technical scheme of the utility model as follows:
a system for heating household garbage by a solid heat carrier in a continuous circulation manner comprises a solid heat carrier furnace, a cyclone separator, a blanking device, a pyrolysis reactor and a material returning device;
the top of the solid heat carrier furnace is connected with the top of the cyclone separator, the bottom of the cyclone separator is connected with the top of the pyrolysis reactor through a pipeline, the bottom of the pyrolysis reactor is connected with the top of the material returning device, and the bottom of the material returning device is connected with the bottom of the solid heat carrier furnace;
a blanking device is arranged on a pipeline which is connected with the cyclone separator and the pyrolysis reactor.
Further, in the system for heating household garbage by continuous circulation of the solid heat carrier, the blanking device is used for controlling the solid heat carrier in the pipeline to have a certain material level, so that the cyclone separator is isolated from the pyrolysis reactor, and an anaerobic environment is maintained.
Further, in the system for continuously and circularly heating household garbage by using the solid heat carrier, the pyrolysis reactor is in a double-shaft spiral form and is used for fully mixing the solid heat carrier and the household garbage.
Further, in the system for heating household garbage by continuous circulation of the solid heat carrier, the material returning device is in a shaftless spiral form.
Further, the system for heating domestic garbage by continuous circulation of the solid heat carrier is described above, and the solid heat carrier furnace is used for heating the solid heat carrier.
Further, the system for heating the domestic garbage by the continuous circulation of the solid heat carrier is described above, and the pyrolysis reactor is used for heating and pyrolyzing the domestic garbage.
Further, in the system for heating household garbage by continuous circulation of the solid heat carrier, the blanking device is used for controlling the solid heat carrier in the pipeline to have a certain material level, so that the cyclone separator is isolated from the pyrolysis reactor, and an anaerobic environment is maintained;
the pyrolysis reactor adopts a double-shaft spiral form and is used for fully mixing a solid heat carrier with the household garbage;
the material returning device adopts a shaftless spiral form;
the solid heat carrier furnace is used for heating a solid heat carrier;
the pyrolysis reactor is used for heating the household garbage.
The utility model discloses a show the effect and lie in:
solid waste carries out the pyrolysis with circulation heat carrier direct contact in pyrolysis reactor, and the pyrolytic carbon and the heat carrier of production return to in the circulation heat carrier stove through the returning charge device, in circulation heat carrier stove, through the burning, solid heat carrier is reheated, is carried in cyclone afterwards, through the separation, and the flue gas is discharged and is carried out the aftertreatment, and solid heat carrier gets into pyrolysis reactor via unloader in, continues to provide required heat for pyrolytic reaction.
Domestic waste and heat carrier direct contact have improved heat transfer efficiency in this system, and the heat carrier recycles, and the system has realized that the heat carrier circulation volume is controllable through setting up unloader and returning charge device, has solved the problem that sets up 2 returning charge return circuits among the prior art, and simple structure has reduced manufacturing cost, and the formation volume of pyrolysis process dioxin is nearly zero.
Drawings
Fig. 1 is a schematic structural diagram of a method for directly heating domestic garbage by continuous circulation of a solid heat carrier according to the present invention.
In the figure: the device comprises a solid heat carrier furnace 1, a cyclone separator 2, a blanking device 3, a pyrolysis reactor 4 and a material returning device 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a system for directly heating a solid heat carrier, which comprises a solid heat carrier furnace 1, a cyclone separator 2, a blanking device 3, a pyrolysis reactor 4 and a material returning device 5; wherein the pyrolysis reactor 4 and the solid heat carrier furnace 1 are connected with the material returning device 5 through the cyclone separator 2 to form a circulation, and the processes of heating the solid heat carrier and heating the garbage are completed.
As shown in fig. 1, the system for heating domestic garbage by continuous circulation of a solid heat carrier comprises a solid heat carrier furnace 1, a cyclone separator 2, a blanking device 3, a pyrolysis reactor 4 and a material returning device 5;
the top of the solid heat carrier furnace 1 is connected with the top of the cyclone separator 2, the bottom of the cyclone separator 2 is connected with the top of the pyrolysis reactor 4 through a pipeline, the bottom of the pyrolysis reactor 4 is connected with the top of the material returning device 5, and the bottom of the material returning device 5 is connected with the bottom of the solid heat carrier furnace 1;
a blanking device 3 is arranged on a pipeline connecting the cyclone separator 2 and the pyrolysis reactor 4.
In this embodiment, the blanking device 3 is used to control the level of the solid heat carrier in the pipeline, so that the cyclone 2 is isolated from the pyrolysis reactor 4 to maintain an oxygen-insulated environment. The pyrolysis reactor 4 adopts a double-shaft spiral form and is used for fully mixing the solid heat carrier and the household garbage.
The material returning device 5 adopts a shaftless spiral form.
The solid heat carrier furnace 1 is used for heating a solid heat carrier.
And the pyrolysis reactor 4 is used for heating the household garbage.
The method comprises the following steps that fuel is combusted in a solid heat carrier furnace 1, a solid heat carrier is heated in the solid heat carrier furnace, high-temperature flue gas and the high-temperature solid heat carrier are conveyed to a cyclone separator 2, gas-solid separation of the high-temperature flue gas and the solid heat carrier is completed in the cyclone separator 2, the high-temperature flue gas enters a subsequent working section along with a flue to be processed in the next step, and the solid heat carrier enters a pyrolysis reactor 4 through a pipeline at the lower end of the cyclone separator 2 and a discharging device 3; by controlling the opening of the blanking device 3, a material seal of a solid heat carrier is formed in the pipeline, so that the flue gas in the cyclone separator 2 is prevented from entering the pyrolysis reactor 4, and the anaerobic environment of the pyrolysis reactor 4 is ensured; the solid heat carrier is in direct contact with the household garbage in the pyrolysis reactor 4, the heat carrier and the household garbage are fully mixed and transferred under the stirring of the double-shaft screw, and carbon residue generated by the solid heat carrier and the pyrolysis household garbage after the household garbage releases heat is discharged from the bottom of the pyrolysis reactor 4 to the material returning device 5. Solid heat carrier and pyrolysis carbon residue form one section material to seal in the pipeline of pyrolytic reactor 4 bottom to returning charge device 5, prevent that the gas in the follow-up pipeline of returning charge device 5 from entering pyrolytic reactor 4, guaranteed pyrolytic reactor 4's anoxybiotic environment.
Claims (1)
1. The utility model provides a system for solid heat carrier continuous cycle heats domestic waste which characterized in that: comprises a solid heat carrier furnace (1), a cyclone separator (2), a blanking device (3), a pyrolysis reactor (4) and a material returning device (5);
the top of the solid heat carrier furnace (1) is connected with the top of the cyclone separator (2), the bottom of the cyclone separator (2) is connected with the top of the pyrolysis reactor (4) through a pipeline, the bottom of the pyrolysis reactor (4) is connected with the top of the material returning device (5), and the bottom of the material returning device (5) is connected with the bottom of the solid heat carrier furnace (1);
a blanking device (3) is arranged on a pipeline connecting the cyclone separator (2) and the pyrolysis reactor (4);
the blanking device (3) is used for controlling the solid heat carrier in the pipeline according to the material level set by the system, so that the cyclone separator (2) is isolated from the pyrolysis reactor (4) and an anaerobic environment is maintained;
the pyrolysis reactor (4) adopts a double-shaft spiral form and is used for fully mixing a solid heat carrier with household garbage;
the material returning device (5) adopts a shaftless spiral form;
the material level set according to the system is arranged in a pipeline between the material returning device (5) and the pyrolysis reactor (4), so that the material returning device (5) is isolated from the pyrolysis reactor (4), and the anaerobic environment of the pyrolysis reactor (4) is maintained;
the solid heat carrier furnace (1) is used for heating a solid heat carrier;
the pyrolysis reactor (4) is used for heating the household garbage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020105037.1U CN211972215U (en) | 2020-01-17 | 2020-01-17 | System for solid heat carrier continuous cycle directly heats domestic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020105037.1U CN211972215U (en) | 2020-01-17 | 2020-01-17 | System for solid heat carrier continuous cycle directly heats domestic waste |
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| Publication Number | Publication Date |
|---|---|
| CN211972215U true CN211972215U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020105037.1U Active CN211972215U (en) | 2020-01-17 | 2020-01-17 | System for solid heat carrier continuous cycle directly heats domestic waste |
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| CN (1) | CN211972215U (en) |
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