CN218221840U - Structure is recycled to waste incineration power plant SDA semidry process flying dust - Google Patents
Structure is recycled to waste incineration power plant SDA semidry process flying dust Download PDFInfo
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- CN218221840U CN218221840U CN202222248692.4U CN202222248692U CN218221840U CN 218221840 U CN218221840 U CN 218221840U CN 202222248692 U CN202222248692 U CN 202222248692U CN 218221840 U CN218221840 U CN 218221840U
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The utility model provides a structure is recycled to waste incineration power plant SDA semidry method flying dust can utilize the partial flying dust of SDA reaction tower bottom. The inlet of the flue is connected with the smoke outlet of the SDA reaction tower; an ash outlet of the SDA reaction tower is connected with an inlet of the crusher through a pipeline, and a first gate valve is arranged on the pipeline; the outlet of the crusher is connected with the inlet of the bottom scraper of the SDA reaction tower through a pipeline, and a first ash discharge valve is arranged on the pipeline; the bottom scraper conveyor of the SDA reaction tower is provided with two ash outlets, one of the ash outlets is connected with an inlet of the grinding mill through a pipeline, a second gate valve is arranged on the pipeline, and the other ash outlet is connected with a common scraper conveyor pipeline; the outlet of the grinder is connected with the feed inlet of the bin pump; the air outlet of the air storage tank is connected with the air inlet of the bin pump through a pipeline; the dry method spray gun is arranged on the flue; the discharge hole of the bin pump is connected with the dry method spray gun.
Description
Technical Field
The utility model relates to a structure is recycled to waste incineration power plant SDA semidry process flying dust.
Background
The SDA semi-dry method is widely applied to flue gas deacidification of a waste incineration power plant and has the advantages of high deacidification reaction efficiency, low operation cost and the like. However, due to the short residence time of the flue gas in the SDA reaction tower, the outer surface of the lime particles is continuously covered by the reaction products during the reaction process to lose the reaction activity, and the fly ash at the bottom of the SDA reaction tower contains higher CaOH 2 If the part of the fly ash is not utilized, the part of the fly ash is used as dangerous waste and enters a fly ash stabilizing system, so that the operation cost of the stabilizing system and the landfill treatment capacity of the stabilized fly ash are greatly increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a refuse incineration power plant SDA semidry method flying dust recycling structure that structural design is reasonable, can utilize the partial flying dust of SDA reaction tower bottom.
The utility model provides a technical scheme that above-mentioned problem adopted is: a recycling structure of semi-dry fly ash of a refuse burning power plant SDA comprises an SDA reaction tower and a flue; the inlet of the flue is connected with the smoke outlet of the SDA reaction tower; the method is characterized in that: the device also comprises a first gate valve, a crusher, a first ash unloading valve, a SDA reaction tower bottom scraper, a second gate valve, a grinder, a bin pump, a common scraper pipeline, a gas storage tank and a dry method spray gun; the ash outlet of the SDA reaction tower is connected with the inlet of the crusher through a pipeline, and a first gate valve is arranged on the pipeline; the outlet of the crusher is connected with the inlet of the bottom scraper of the SDA reaction tower through a pipeline, and a first ash discharge valve is arranged on the pipeline; the bottom scraper conveyor of the SDA reaction tower is provided with two ash outlets, one of the ash outlets is connected with an inlet of the grinding mill through a pipeline, a second gate valve is arranged on the pipeline, and the other ash outlet is connected with a common scraper conveyor pipeline; the outlet of the grinder is connected with the feed inlet of the bin pump; the air outlet of the air storage tank is connected with the air inlet of the bin pump through a pipeline; the dry method spray gun is arranged on the flue; the discharge hole of the bin pump is connected with the dry method spray gun.
The storehouse pump be two, set up side by side.
The utility model discloses still include the tripper, the export of grinding the machine is passed through the tripper and is connected with the feed inlet of two storehouse pumps.
The outlet of the grinder of the utility model is connected with the inlet of the distributor through a pipeline; the distributor is provided with two outlets, and the two outlets of the distributor are respectively connected with the feed inlets of the two bin pumps through pipelines.
The utility model discloses install No. two ash discharge valves on the pipeline of grinding machine export and tripper access connection.
The utility model discloses still include pneumatic conveying pipeline, the discharge gate of storehouse pump passes through pneumatic conveying pipeline and is connected with the dry process spray gun.
The first dust unloading valve and the second dust unloading valve are star-shaped dust unloading valves.
The utility model is provided with a compressed air valve on the pipeline connecting the air outlet of the air storage tank and the air inlet of the bin pump; a second compressed air valve is arranged on the discharge hole of the bin pump.
Compared with the prior art, the utility model, have following advantage and effect: the fly ash at the bottom of the SDA reaction tower can be partially utilized, on one hand, the consumption of slaked lime in an incineration plant can be reduced, on the other hand, the fly ash yield of the incineration plant can be reduced by improving the utilization rate of the slaked lime, and therefore the material usage amount and the landfill amount of cement, chelating agent and the like for stabilizing the fly ash are reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
The embodiment of the utility model provides a scrape trigger 4, no. two push-pull valves 5, grind machine 6, no. two unloading valves 7, tripper 8, storehouse pump 9, public scraper blade pipeline 10, gas holder 11, pneumatic conveying pipeline 12, dry process spray gun 13, SDA reaction tower 14, a compressed air valve 15, no. two compressed air valves 16 and flue 17 including push-pull valve 1, breaker 2, an ash discharge valve 3, SDA reaction tower bottom. The first ash discharge valve 3 and the second ash discharge valve 7 are both star-shaped ash discharge valves.
The ash outlet of the SDA reaction tower 14 is connected with the inlet of the crusher 2 through a pipeline, and a first gate valve 1 is arranged on the pipeline.
The outlet of the crusher 2 is connected with the inlet of the bottom scraper 4 of the SDA reaction tower through a pipeline, and a first ash discharge valve 3 is arranged on the pipeline.
The scraper 4 at the bottom of the SDA reaction tower is provided with two ash outlets; one of the ash outlets is positioned in the middle of the scraper conveyor, the ash outlet is connected with an inlet of a grinding machine 6 through a pipeline, and a second gate valve 5 is installed on the pipeline; the other outlet is located at the end of the scraper and is connected to a common scraper line 10 for feeding ash to the fly ash stabilization system during the mill feed stop phase.
The grinding machine 6 grinds the fly ash to expose the surface of the calcium hydroxide again, SO that SO can be neutralized in the subsequent flue and filter bag 2 And HCl react fully. The outlet of the grinding machine 6 is connected with the feed inlets of two bin pumps 9 which are arranged side by side through a distributor 8, and concretely comprises the following steps: the outlet of the grinder 6 is connected with the inlet of the distributor 8 through a pipeline, and a second ash discharge valve 7 is arranged on the pipeline; the distributor 8 has two outlets for controlling the grindingThe flying ash falls into the two bin pumps 9 at the flying ash period, and two outlets of the distributor 8 are respectively connected with feed inlets of the two bin pumps 9 through pipelines.
The air outlet of the air storage tank 11 is connected with the air inlet of the bin pump 9 through a pipeline, and a first compressed air valve 15 is installed on the pipeline.
The inlet of the flue 17 is connected with the smoke outlet of the SDA reaction tower 14, and the dry method spray gun 13 is arranged on the flue 17. The outlet of the flue 17 is connected with a bag-type dust collector.
The discharge port of the bin pump 9 is connected with a dry method spray gun 13 through a pneumatic conveying pipeline 12. A second compressed air valve 16 is arranged on the discharge hole of the bin pump 9.
The lime slurry liquid drops in the SDA reaction tower 14 evaporate water in the reaction tower and are mixed with SO in the flue gas 2 And HCl, most of the ash falls through the bottom ash bucket of the reaction tower. After the large-block fly ash is primarily crushed in the crusher 2, the large-block fly ash is blocked by the negative pressure of the first ash discharge valve 3 and falls into a scraper 4 at the bottom of the SDA reaction tower. Part of fly ash of the bottom scraper 4 of the SDA reaction tower falls into a grinder 6 through a second gate valve 5, and the rest fly ash falls into a common scraper through a common scraper pipeline 10 and is sent to a fly ash stabilization workshop for treatment. The grinding machine 6 can grind the fly ash falling into the grinding machine, and the ground fly ash has higher specific surface area and reaction activity again, SO that SO can be neutralized in a subsequent flue and bag-type dust remover 2 HCl reacts well. The ground fly ash at the outlet of the grinder 6 falls into a distributor 8 through the air pressure isolation action of a second ash discharge valve 7. When the first silo pump 9 is used for feeding ash, the first compressed air valve 15 and the second compressed air valve 16 are closed, when the ash in the silo pump 9 reaches a certain amount, the distributor is switched to feed the ash into the second silo pump 9, the first compressed air valve 15 of the first silo pump 9 is opened, and the first silo pump 9 is inflated to a certain pressure. After the first cabin pump 9 reaches the set pressure, the second compressed air valve 16 is automatically opened, and the ground fly ash is sent to the dry method spray gun 13 through the pneumatic conveying pipeline 12 by the compressed air. The two bin pumps 9 operate alternately to ensure that the grinding fly ash is continuously sprayed into the flue.
In practical application, according to a certain 2 x 750t/d waste incinerationThe actual measurement of burning items shows that CaOH in fly ash at the bottom of the SDA reaction tower 14 2 The content is as high as about 40 percent, and the fly ash at the bottom of the bag-type dust collector contains CaOH 2 The content is only about 15 percent, and the CaOH of the whole plant can be reduced by adopting the technology 2 The consumption is 15 to 20 percent, the treatment capacity of the fly ash in the whole plant is reduced by more than 10 percent, and the SDA semidry fly ash recycling technology provided by the novel patent has good economic benefit.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the foundation the utility model discloses an all include in the protection scope of the utility model discloses an equivalent change or simple change that structure, characteristic and principle do. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. A semi-dry fly ash recycling structure of a refuse burning power plant SDA comprises an SDA reaction tower and a flue; the inlet of the flue is connected with the smoke outlet of the SDA reaction tower; the method is characterized in that: the device also comprises a first gate valve, a crusher, a first ash unloading valve, a SDA reaction tower bottom scraper, a second gate valve, a grinder, a bin pump, a common scraper pipeline, a gas storage tank and a dry method spray gun; an ash outlet of the SDA reaction tower is connected with an inlet of the crusher through a pipeline, and a first gate valve is arranged on the pipeline; the outlet of the crusher is connected with the inlet of the bottom scraper of the SDA reaction tower through a pipeline, and a first ash discharge valve is arranged on the pipeline; the bottom scraper conveyor of the SDA reaction tower is provided with two ash outlets, one of the ash outlets is connected with an inlet of the grinding mill through a pipeline, a second gate valve is arranged on the pipeline, and the other ash outlet is connected with a common scraper conveyor pipeline; the outlet of the grinder is connected with the feed inlet of the bin pump; the air outlet of the air storage tank is connected with the air inlet of the bin pump through a pipeline; the dry method spray gun is arranged on the flue; the discharge hole of the bin pump is connected with the dry method spray gun.
2. The semi-dry fly ash recycling structure for SDA of garbage incineration power plants according to claim 1, characterized in that: the two bin pumps are arranged side by side.
3. The recycling structure of semi-dry fly ash in SDA of a refuse burning power plant according to claim 2, characterized in that: the device also comprises a distributor, and the outlet of the grinding machine is connected with the feed inlets of the two bin pumps through the distributor.
4. The semi-dry fly ash recycling structure for SDA of garbage incineration power plants according to claim 3, characterized in that: the outlet of the grinder is connected with the inlet of the distributor through a pipeline; the distributor is provided with two outlets, and the two outlets of the distributor are respectively connected with the feed inlets of the two bin pumps through pipelines.
5. The semi-dry fly ash recycling structure for SDA of garbage incineration power plants according to claim 3, characterized in that: and a second ash discharge valve is arranged on a pipeline connecting the outlet of the grinding machine and the inlet of the distributor.
6. The semi-dry fly ash recycling structure for SDA of garbage incineration power plants according to claim 1, characterized in that: the dry spraying device also comprises a pneumatic conveying pipeline, and a discharge port of the bin pump is connected with the dry spraying gun through the pneumatic conveying pipeline.
7. The recycling structure of semi-dry fly ash in SDA of a refuse burning power plant according to claim 5, characterized in that: the first ash discharge valve and the second ash discharge valve are star-shaped ash discharge valves.
8. The semi-dry fly ash recycling structure for SDA of garbage incineration power plants according to claim 1, characterized in that: a first compressed air valve is arranged on a pipeline connecting an air outlet of the air storage tank and an air inlet of the bin pump; a second compressed air valve is arranged on the discharge hole of the bin pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248692.4U CN218221840U (en) | 2022-08-25 | 2022-08-25 | Structure is recycled to waste incineration power plant SDA semidry process flying dust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248692.4U CN218221840U (en) | 2022-08-25 | 2022-08-25 | Structure is recycled to waste incineration power plant SDA semidry process flying dust |
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| CN218221840U true CN218221840U (en) | 2023-01-06 |
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| CN202222248692.4U Active CN218221840U (en) | 2022-08-25 | 2022-08-25 | Structure is recycled to waste incineration power plant SDA semidry process flying dust |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116511222A (en) * | 2023-05-26 | 2023-08-01 | 重庆三峰环境集团股份有限公司 | Fly ash activation and reuse method and system |
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2022
- 2022-08-25 CN CN202222248692.4U patent/CN218221840U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116511222A (en) * | 2023-05-26 | 2023-08-01 | 重庆三峰环境集团股份有限公司 | Fly ash activation and reuse method and system |
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