CN105509039B - The deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler - Google Patents
The deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN105509039B CN105509039B CN201610053815.5A CN201610053815A CN105509039B CN 105509039 B CN105509039 B CN 105509039B CN 201610053815 A CN201610053815 A CN 201610053815A CN 105509039 B CN105509039 B CN 105509039B
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- CN
- China
- Prior art keywords
- level material
- deashing mechanism
- return system
- exchangeable
- material return
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The present invention relates to the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler, including one-level material return system, the one-level material return system is one-level material returning valve, and the one-level material returning valve top is provided with deashing mechanism, and the deashing mechanism is to be obliquely installed；The deashing mechanism includes ash bucket, staggered has multiple exchangeable nozzles on the ash bucket, exchangeable nozzle is screwed connection, and multiple exchangeable nozzles connect with the one side of several plenum chambers, and the entrance of logical compressed air is provided with the middle part of the another side of the plenum chamber.Beneficial effects of the present invention are：By the way that deashing mechanism is obliquely installed, staggered arranges multiple exchangeable nozzles on ash bucket, the distance between the exchangeable nozzle and one-level material returning valve edge of most next row L is less than or equal to 2 times of fore-and-aft distance (S1), the row of exchangeable nozzle is more than 3 rows, lead to compressed air in exchangeable nozzle, be blown using timing, prevent dust stratification, grey mobility is improved, avoids dust stratification.
Description
Technical field
The present invention relates to the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler.
Background technology
Existing multipath circulating fluidized bed boiler because the accommodation of fuel is larger, return by the one-level of the boiler of part of fuel
Grey viscosity differences in material system are larger, and grey mobility difference is also larger, and part ash will accumulate in the ash bucket of the system
On wall, it can on a large scale be come off when depositing to a certain extent, cause material return system to be blocked and cause blowing out, influence operating efficiency, clearly
The shortcomings such as reason trouble.
The content of the invention
Weak point present in regarding to the issue above, the present invention provide the one-level feed back of multipath circulating fluidized bed boiler
The deashing mechanism of system.
To achieve the above object, the present invention provides the dust removing machine of the one-level material return system of multipath circulating fluidized bed boiler
Structure, including one-level material return system, the one-level material return system are one-level material returning valve, and the one-level material returning valve top is provided with deashing
Mechanism, the deashing mechanism are to be obliquely installed；
The deashing mechanism includes ash bucket, and staggered has multiple exchangeable nozzles on the ash bucket, it is multiple it is described can be more
Change nozzle to connect with the one side of plenum chamber, the entrance of compressed air is opened in the middle part of the another side of multiple plenum chambers.
Further improved as of the invention, the angle of inclination of the deashing mechanism is 30 ° -55 °.
Further improved as of the invention, the angle of inclination of the deashing mechanism is 45 °.
Further improved as of the invention, the lateral separation between the adjacent two row exchangeable nozzle is 50mm-
400mm, the fore-and-aft distance between exchangeable nozzle described in adjacent two row is 100mm-500mm.
Further improved as of the invention, the lateral separation between the adjacent two row exchangeable nozzle is 220mm, adjacent
Fore-and-aft distance between exchangeable nozzle described in two rows is 300mm.
Further improved as of the invention, the exchangeable nozzle is screwed connection in inverted l shape.
Further improved as of the invention, the exchangeable nozzle row is more than or equal to 3 rows.
Further improved as of the invention, the exchangeable nozzle setting angle is 0 ° -45 °.
Beneficial effects of the present invention are：By the way that deashing mechanism is obliquely installed, its angle is 30 °~55 °, stagger arrangement on ash bucket
Formula arranges multiple exchangeable nozzles, and exchangeable nozzle connects with plenum chamber, and the arrangement lateral separation (S2) of exchangeable nozzle exists
Between 50~400mm, fore-and-aft distance (S1) leads to compressed air between 100~500mm in exchangeable nozzle, sprayed using timing
Blow, prevent dust stratification, improve grey mobility, avoid dust stratification.
Brief description of the drawings
Fig. 1 is the structural representation of the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler of the present invention；
Fig. 2 be in Fig. 1 A to top view；
Fig. 3 be multipath circulating fluidized bed boiler of the present invention one-level material return system deashing mechanism exchangeable nozzle with
Ash bucket is fixedly connected with schematic diagram.
In figure：1st, exchangeable nozzle；2nd, one-level material returning valve；3rd, entrance；4th, plenum chamber；5th, ash bucket.
Embodiment
As Figure 1-3, the dust removing machine of the one-level material return system of the multipath circulating fluidized bed boiler of the embodiment of the present invention
Structure, including one-level material return system, one-level material return system are one-level material returning valve 2, and the top of one-level material returning valve 2 is provided with deashing mechanism,
Deashing mechanism is to be obliquely installed.Deashing mechanism includes ash bucket 5, and staggered has multiple exchangeable nozzles 1, Duo Geke on ash bucket 5
Change nozzle 1 to connect with the one side of multiple plenum chambers 4, the entrance 3 of compressed air is opened in the middle part of the another side of plenum chamber 4.Clearly
The angle of inclination of grey mechanism is 30 ° -55 °, and the angle of inclination of deashing mechanism is 45 °.Between multiple exchangeable nozzles 1 laterally away from
From for 50mm-400mm, the fore-and-aft distance between multiple exchangeable nozzles 1 is 100mm-500mm, between multiple exchangeable nozzles 1
Lateral separation be 220mm, the fore-and-aft distance between multiple exchangeable nozzles 1 is 300mm, and exchangeable nozzle 1 is in inverted l shape,
For screwed connection, the row of exchangeable nozzle 1 is more than or equal to 3 rows, and the setting angle of exchangeable nozzle 1 is 0 ° -45 °.
Greatly reduce because fuel ash viscosity is big, poor fluidity and caused by dust stratification, while prevent because dust stratification is excessive
Form coming off for large area and block one-level material returning valve, influence boiler operatiopn.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (7)
1. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler, including one-level material return system, the one-level
Material return system is one-level material returning valve (2), it is characterised in that：
One-level material returning valve (2) top is provided with deashing mechanism, and the deashing mechanism is to be obliquely installed；
The deashing mechanism includes ash bucket (5), and staggered has multiple exchangeable nozzles (1) on the ash bucket (5), multiple described
Exchangeable nozzle (1) is connected with the one side of multiple plenum chambers (4), and it is empty that compression has been opened in the middle part of the another side of the plenum chamber (4)
The entrance (3) of gas；
The exchangeable nozzle of most next row is less than or equal to 2 times of fore-and-aft distance with the distance L at one-level material returning valve edge；It is adjacent
Lateral separations between the two row exchangeable nozzles (1) are 50mm-400mm, between exchangeable nozzle (1) described in adjacent two row
Fore-and-aft distance be 100mm-500mm.
2. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler according to claim 1, its feature
It is：The angle of inclination of the deashing mechanism is 30 ° -55 °.
3. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler according to claim 2, its feature
It is：The angle of inclination of the deashing mechanism is 45 °.
4. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler according to claim 1, its feature
It is：Lateral separation between the adjacent two row exchangeable nozzle (1) is 220mm, exchangeable nozzle (1) described in adjacent two row
Between fore-and-aft distance be 300mm.
5. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler according to claim 4, its feature
It is：The exchangeable nozzle (1) is screwed connection in inverted l shape.
6. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler according to claim 1, its feature
It is：Exchangeable nozzle (1) row is more than or equal to 3 rows.
7. the deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler according to claim 1, its feature
It is：Exchangeable nozzle (1) setting angle is 0 ° -45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053815.5A CN105509039B (en) | 2016-01-27 | 2016-01-27 | The deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053815.5A CN105509039B (en) | 2016-01-27 | 2016-01-27 | The deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
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| CN105509039A CN105509039A (en) | 2016-04-20 |
| CN105509039B true CN105509039B (en) | 2018-01-12 |
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| CN201610053815.5A Active CN105509039B (en) | 2016-01-27 | 2016-01-27 | The deashing mechanism of the one-level material return system of multipath circulating fluidized bed boiler |
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| CN110375294A (en) * | 2019-08-09 | 2019-10-25 | 新乡市汇能玉源发电有限公司 | A kind of boiler return feeder |
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| JP2651768B2 (en) * | 1992-06-19 | 1997-09-10 | 株式会社荏原製作所 | Fluid bed boiler facility with back ash classification equipment |
| CN101614400B (en) * | 2009-07-31 | 2011-03-02 | 北京热华能源科技有限公司 | Fluidized selective deslagging device |
| CN201572584U (en) * | 2010-01-29 | 2010-09-08 | 洁华控股股份有限公司 | Blockage cleaning device for dust catcher |
| CN101749696B (en) * | 2010-02-09 | 2011-07-20 | 清华大学 | Multipath circulating fluidized bed boiler |
| CN205332189U (en) * | 2016-01-27 | 2016-06-22 | 北京热华能源科技有限公司 | Dust cleaning mechanism of one -level feed back system of multiple processes circulating fluidized bed boiler |
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- 2016-01-27 CN CN201610053815.5A patent/CN105509039B/en active Active
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| CN105509039A (en) | 2016-04-20 |
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Address after: Room A306, Auxiliary Building, A79 Shuangqing Road, Haidian District, Beijing, 100089 Patentee after: Rehua Energy Co.,Ltd. Address before: Room A306, Auxiliary Building, A79 Shuangqing Road, Haidian District, Beijing, 100089 Patentee before: Beijing Rehua Energy Co.,Ltd. |
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Address after: Room A306, Auxiliary Building, A79 Shuangqing Road, Haidian District, Beijing, 100089 Patentee after: Beijing Rehua Energy Co.,Ltd. Address before: 100083 room A109, research and research complex, Tsinghua University, Haidian District, Beijing Patentee before: BEIJING NOWVA ENERGY TECHNOLOGY Co.,Ltd. |