CN218936361U - Garbage incinerator fly ash cooperative treatment system - Google Patents
Garbage incinerator fly ash cooperative treatment system Download PDFInfo
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- CN218936361U CN218936361U CN202221983607.2U CN202221983607U CN218936361U CN 218936361 U CN218936361 U CN 218936361U CN 202221983607 U CN202221983607 U CN 202221983607U CN 218936361 U CN218936361 U CN 218936361U
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- fly ash
- primary air
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- slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a garbage incinerator fly ash cooperative treatment system. The device comprises an oxygen-enriched combustion system, a wet-type bottom slag separation treatment device and a fly ash recycling system; the slag scooping machine is arranged at a slag hole of the garbage incinerator; the wet type bottom slag separation treatment device is connected with a slag dragging machine; the garbage hopper is arranged at a slag inlet of the garbage incinerator; the waste heat boiler is respectively connected with the garbage incinerator and the flue gas purifying system; the waste heat boiler is internally provided with a superheater, an evaporator and an economizer; the wet type bottom slag separation treatment device, the waste heat boiler and the flue gas purification system are connected with a waste hopper through a fly ash recycling system; the fly ash outward transport treatment is respectively connected with a waste heat boiler and a flue gas purification system; the oxygen-enriched combustion system is connected with the primary air system. The utility model can realize the aim of cooperatively treating the fly ash, and has the advantages of improving the combustion efficiency, improving the recycling value of the bottom slag of the incinerator, improving the efficiency of the incinerator and the waste heat boiler, and reducing the discharge amount of carbon monoxide and dioxin.
Description
Technical Field
The utility model relates to the field of solid waste treatment, in particular to a method for modifying a household garbage incinerator, and more particularly relates to a garbage incinerator fly ash cooperative treatment system.
Background
At present, the water content of the Chinese garbage is sometimes up to 50% -60%, the ash content is also between 20% -25%, the calorific value of the garbage entering the furnace is about 6000kJ/kg-6500kJ/kg, even if the garbage is burnt in an adiabatic hearth, the theoretical combustion temperature is below 1000 ℃, the garbage in the hearth is difficult to fully burn due to the fact that the hearth temperature is too low, and the organic carbon content in ash and unburned loss are high.
In addition, the amount of fly ash in the flue gas generated by the garbage incinerator is also larger, and the fly ash accounts for about 3% -4% of the garbage entering the factory, and most heavy metals and dioxins in the household garbage incineration flue gas are trapped by the flue gas purification system and are enriched in the fly ash, so the fly ash is an important collection place of the heavy metals and the dioxins in the environment. Because the main mode of traditional fly ash treatment is stabilization and landfill, the method has the problems of high cost, high risk of environmental pollution and the like.
With the development of national economy and the improvement of national living standard, the generation and the recovery of the household garbage are rapidly increased, the garbage incineration power generation has become the main stream of the harmless treatment of the household garbage, and the amount of the fly ash generated by the garbage incineration power generation is also increased year by year.
Disclosure of Invention
The utility model aims to provide a garbage incinerator fly ash cooperative treatment system, which is a fly ash cooperative treatment system, and by improving combustion efficiency and cooperatively treating fly ash, the recycling value of incinerator bottom slag is improved, the fly ash treatment cost is greatly reduced, the efficiency of an incinerator and a waste heat boiler is improved, and the emission amount of carbon monoxide and dioxin at the outlet of a hearth is reduced; solves the problems of high cost, high risk of environmental pollution and the like existing in the traditional fly ash treatment main mode of stabilizing and filling.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a garbage incinerator fly ash cooperative treatment system is characterized in that: comprises an oxygen-enriched combustion system, a wet-type bottom slag separation treatment device and a fly ash recycling system;
the slag scooping machine is arranged at a slag hole of the garbage incinerator; the wet type bottom slag separation treatment device is connected with a slag dragging machine;
the garbage hopper is arranged at a slag inlet of the garbage incinerator;
the waste heat boiler is respectively connected with the garbage incinerator and the flue gas purifying system; the waste heat boiler is internally provided with a superheater, an evaporator and an economizer;
the wet type bottom slag separation treatment device, the waste heat boiler and the flue gas purification system are all connected with a waste hopper through a fly ash recycling system;
the fly ash outward transport treatment is respectively connected with a waste heat boiler and a flue gas purification system;
the oxygen-enriched combustion system is connected with the primary air system; the primary air system is connected with the garbage incinerator.
In the technical scheme, the primary air system comprises a primary air fan, a primary air preheater and a primary air pipeline;
the garbage pit area, the primary air blower, the primary air preheater and the garbage incinerator are sequentially connected through a primary air pipeline;
an oxygen-enriched combustion system is arranged on a primary air pipeline between the primary air preheater and the garbage incinerator.
In the technical scheme, the oxygen-enriched combustion system selects an industrial oxygenerator.
In the above technical scheme, the infrared camera flame temperature monitoring system is arranged at the top of the first flue.
The advantages of the utility model are mainly embodied in the following aspects:
(1) The main purpose of improving the combustion temperature of the hearth is to improve the combustion efficiency, further remove organic matters in the ashes of the ashes, reduce the total organic carbon content and the soluble carbon content of the ashes, sinter the ashes into granular glass bodies, solidify heavy metals and other harmful substances therein, reduce the toxicity and leaching of the heavy metals and other harmful substances, and improve the quality of bottom slag;
(2) The incinerator bottom slag is sintered into high-quality crystal particles which can be recycled through oxygen-enriched high-temperature sintering of a hearth, and the main application of the incinerator bottom slag can be used as a building material, while untreated slag can only be used for paving, landfill or as a pit backfill material;
(3) The fly ash recycling system is added, 75% of the fly ash is conveyed back to the furnace for cyclic incineration after the boiler ash and the fly ash under the dust remover are collected together, and the rest 25% of the fly ash is conveyed to the fly ash treatment system, so that the conveying capacity of the fly ash is greatly reduced, the digestion of most of fly ash plants is realized, and the fly ash treatment cost is greatly reduced; when the water-cooled hearth is adopted, the nickel-chromium alloy surfacing modification is adopted to protect the membrane wall of the hearth and prevent the fly ash from recycling and aggravating the abrasion to the hearth;
(4) Oxygen-enriched combustion is implemented in the incinerator hearth, the oxygen content is increased, the combustion temperature of the hearth can be increased, the exhaust gas quantity at the outlet of the waste heat boiler can be obviously reduced, the smoke exhaust loss is reduced, the efficiency of the incinerator and the waste heat boiler is improved, the generating capacity of ton garbage can be effectively improved, the combustion temperature of the hearth is increased, and the emission quantity of carbon monoxide and dioxin at the outlet of the hearth can be reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In fig. 1, a denotes a pit area; b represents a superheater; c represents an evaporator; d represents an economizer; e represents steam.
In the figure, the device comprises a 1-oxygen-enriched combustion system, a 2-garbage incinerator, a 3-waste heat boiler, a 4-wet bottom slag separation treatment device, 5-fly ash outward transportation treatment, a 6-primary air system, a 61-primary air fan, a 62-primary air preheater, a 63-primary air pipeline, a 7-garbage hopper, an 8-slag extractor, a 9-fly ash recycling system, a 10-infrared camera flame temperature monitoring system, an 11-flue gas purification system and a 12-first flue.
Detailed Description
The following detailed description of the utility model is, therefore, not to be taken in a limiting sense, but is made merely by way of example. While making the advantages of the present utility model clearer and more readily understood by way of illustration.
The utility model provides a garbage incinerator fly ash cooperative treatment system design without changing the bodies of an incinerator and a waste heat boiler, which ensures that garbage is fully combusted by increasing the combustion temperature of a hearth by increasing the oxygen content of primary air, and reduces the organic matter content in the bottom slag of the boiler (the heat rate is less than 0.1%). Meanwhile, the bottom slag forms crystal particles after high-temperature sintering, so that heavy metals can be effectively solidified in the bottom slag, the toxic leaching of the bottom slag is reduced, and the purpose of harmless disposal of the bottom slag is achieved. Meanwhile, the utility model also provides a fly ash recycling system, which recycles the boiler ash and the fly ash part under the dust remover to the hearth for high-temperature incineration, so that the glass body is granulated, and the purpose of harmless treatment of the fly ash is achieved. The utility model can realize the in-plant digestion of most fly ash by the way of cooperatively treating the fly ash by the incinerator, thereby greatly reducing the fly ash treatment cost, improving the combustion efficiency, improving the recycling value of the bottom slag of the incinerator, improving the efficiency of the incinerator and the waste heat boiler, and reducing the discharge amount of carbon monoxide and dioxin at the outlet of the hearth.
As can be seen with reference to the accompanying drawings: in order to achieve the above purpose, the technical scheme of the utility model is as follows: a garbage incinerator fly ash cooperative treatment system is characterized in that: comprises an oxygen-enriched combustion system 1, a wet-type bottom slag separation treatment device 4 and a fly ash recycling system 9;
the slag scooping machine 8 is arranged at a slag hole of the garbage incinerator 2; the wet bottom slag separation treatment device 4 is connected with a slag dragging machine 8; the wet type bottom slag separation treatment device 4 belongs to the prior art and comprises a structure of washing, screening and the like;
the garbage hopper 7 is arranged at a slag inlet of the garbage incinerator 2;
the garbage incinerator 2, the slag conveyor 8, the wet bottom slag separation treatment device 4, the fly ash recirculation system 9 and the garbage hopper 7 are connected into a circulating system for bottom slag re-combustion;
the garbage incinerator 2, the waste heat boiler 3, the fly ash recirculation system 9 and the garbage hopper 7 are connected into a fly ash reburning circulation system;
the garbage incinerator 2, the waste heat boiler 3, the flue gas purification system 11, the fly ash recirculation system 9 and the garbage hopper 7 are connected into a flue gas re-combustion circulation system;
the waste heat boiler 3 is respectively connected with the garbage incinerator 2 and the flue gas purifying system 11; the waste heat boiler 3 is internally provided with a superheater, an evaporator and an economizer;
the wet type bottom slag separation treatment device 4, the waste heat boiler 3 and the flue gas purification system 11 are all connected with the waste hopper 7 through a fly ash recirculation system 9; the fly ash recirculation system 9 refers to a recirculation line, in particular to a recirculation line through which the fly ash under the flue gas cleaning system 11 is returned to the waste hopper 7. In addition, part of the bottom slag separated by the wet bottom slag separation processing device 4 is also sent back to the garbage hopper 7 through the circulating pipeline 9;
the fly ash outward transport treatment 5 is respectively connected with the waste heat boiler 3 and the flue gas purification system 11;
the oxygen-enriched combustion system 1 is connected with a primary air system 6; the primary air system 6 is connected with the garbage incinerator 2.
Further, the primary air system 6 includes a primary air blower 61, a primary air preheater 62, and a primary air duct 63;
the garbage pit area, the primary air blower 61, the primary air preheater 62 and the garbage incinerator 2 are sequentially connected through a primary air pipeline 63;
an oxycombustion system 1 is arranged on a primary air pipe 63 between the primary air preheater 62 and the garbage incinerator 2.
Further, the oxyfuel combustion system 1 is an industrial oxygenerator.
Further, an infrared camera flame temperature monitoring system 10 is disposed atop the first flue 12.
Examples
The utility model will now be described in detail with reference to the example of application of the utility model to the treatment of fly ash in a refuse incinerator, and the utility model is also directed to the application of the utility model to the treatment of fly ash in other refuse incinerators.
The embodiment adopts the following modification:
and (3) modifying a newly added fly ash cooperative treatment system: the boiler ash under the ash bucket of the waste heat boiler 3 and the fly ash under the dust remover 5 are collected, 75% of the fly ash is sent into the hopper 7 of the garbage incinerator through the fly ash recycling system 9 by the fly ash conveying system, and then enters the garbage incineration hearth 2 for re-sintering. The rest 25% of the fly ash is sent into the fly ash outward transport system 5, so that the outward transport amount of the fly ash is greatly reduced, the digestion of most fly ash plants is realized, and the fly ash treatment cost is greatly reduced.
And (3) modifying a bottom slag separation treatment system: the wet bottom slag separation treatment system 4 is additionally arranged behind the waste incinerator slag extractor 8, and the bottom slag is separated into fine particles with the diameter smaller than 5mm which can be returned to the hearth for sintering and recyclable crystal particles with the diameter larger than 2mm which are produced after sintering through the procedures of washing, screening and the like, and the sludge produced after washing is also returned to the hearth for combustion treatment again, so that the recycling value of the bottom slag of the incinerator is improved.
The technical transformation of the oxygen-enriched combustion of the garbage incinerator is as follows: the industrial oxygenerator is additionally arranged near the garbage incinerator, oxygen produced by the industrial oxygenerator is mixed with a primary air system 6 through an air duct to improve the oxygen content in the primary air and then is fed into the garbage incinerator 2, the combustion temperature of a hearth is improved, the combustion efficiency is improved, organic matters in ashes of the ashes are further removed, the total organic carbon content and the soluble carbon content of the ashes are reduced, the ashes are sintered into granular glass bodies, heavy metals and other harmful substances are solidified in the granular glass bodies, the toxicity and leaching of the heavy metals are reduced, the bottom slag quality is improved, the exhaust gas quantity at an outlet of a waste heat boiler is obviously reduced, the smoke exhaust loss is reduced, the efficiency of the incinerator and the waste heat boiler is improved, the waste heat generating capacity is effectively improved, the combustion temperature of the hearth is improved, the discharge quantity of carbon monoxide and dioxin at an outlet of the hearth is reduced, and an infrared camera flame temperature monitoring system 10 is arranged above a high Wen Duandi flue of the waste heat boiler to monitor the hearth temperature of the incinerator to prevent the hearth from being too high.
The above description is only one specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present utility model should be covered in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Other non-illustrated parts are known in the art.
Claims (4)
1. A garbage incinerator fly ash cooperative treatment system is characterized in that: comprises an oxygen-enriched combustion system (1), a wet-type bottom slag separation treatment device (4) and a fly ash recycling system (9);
the slag scooping machine (8) is arranged at a slag outlet of the garbage incinerator (2); the wet type bottom slag separation treatment device (4) is connected with a slag dragging machine (8);
the garbage hopper (7) is arranged at a slag inlet of the garbage incinerator (2);
the waste heat boiler (3) is respectively connected with the garbage incinerator (2) and the flue gas purifying system (11);
the wet type bottom slag separation treatment device (4), the waste heat boiler (3) and the flue gas purification system (11) are all connected with the waste hopper (7) through the fly ash recycling system (9);
the garbage incinerator (2), the slag scooping machine (8), the wet bottom slag separation treatment device (4), the fly ash recycling system (9) and the garbage hopper (7) are connected into a recycling system for bottom slag re-combustion;
the fly ash outward transport treatment (5) is respectively connected with the waste heat boiler (3) and the flue gas purification system (11);
the oxygen-enriched combustion system (1) is connected with the primary air system (6); the primary air system (6) is connected with the garbage incinerator (2).
2. The waste incinerator fly ash co-processing system according to claim 1, wherein: the primary air system (6) comprises a primary air fan (61), a primary air preheater (62) and a primary air pipeline (63);
the garbage pit area, the primary air blower (61), the primary air preheater (62) and the garbage incinerator (2) are sequentially connected through a primary air pipeline (63);
an oxygen-enriched combustion system (1) is arranged on a primary air pipeline (63) between the primary air preheater (62) and the garbage incinerator (2).
3. The waste incinerator fly ash co-processing system according to claim 2, wherein: the oxygen-enriched combustion system (1) adopts an industrial oxygenerator.
4. A waste incinerator fly ash co-processing system according to claim 3, wherein: an infrared camera flame temperature monitoring system (10) is arranged above the first flue (12) of the high-temperature section of the waste heat boiler (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221983607.2U CN218936361U (en) | 2022-07-29 | 2022-07-29 | Garbage incinerator fly ash cooperative treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221983607.2U CN218936361U (en) | 2022-07-29 | 2022-07-29 | Garbage incinerator fly ash cooperative treatment system |
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| Publication Number | Publication Date |
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| CN218936361U true CN218936361U (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221983607.2U Active CN218936361U (en) | 2022-07-29 | 2022-07-29 | Garbage incinerator fly ash cooperative treatment system |
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| CN (1) | CN218936361U (en) |
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2022
- 2022-07-29 CN CN202221983607.2U patent/CN218936361U/en active Active
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