CN201496951U - Multi-bin type energy-saving cold slag machine of circulating fluidized bed boiler - Google Patents
Multi-bin type energy-saving cold slag machine of circulating fluidized bed boiler Download PDFInfo
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- CN201496951U CN201496951U CN2009202328759U CN200920232875U CN201496951U CN 201496951 U CN201496951 U CN 201496951U CN 2009202328759 U CN2009202328759 U CN 2009202328759U CN 200920232875 U CN200920232875 U CN 200920232875U CN 201496951 U CN201496951 U CN 201496951U
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Abstract
The utility model relates to a multi-bin type energy-saving cold slag machine of a circulating fluidized bed boiler, comprising a machine body; a longitudinal partition wall is installed in the machine body and divides the inner bin of the machine body into a rough slag bin and a thin slag bin; the inner bin of the machine body is divided into a front rough slag bin, a back rough slag bin, a front thin slag bin and a back thin slag bin by a transverse partition wall; a porous plate with holes and a membrane type water-cooled wall are installed at the bottom part of the rough slag bin; a rough slag discharge port is installed at the tail end of the porous plate; a cooling coil pipe is installed inside the thin slag bin; the machine body at the bottom part of the thin slag bin is provided with a plurality of blow holes; a bell jar blast cap is sheathed on the blow holes; the machine bodies at the lower ends of the porous plate, the front thin slag bin and the back thin slag bin are respectively provided with a balanced wind box; and the cooling coil pipe inside the front thin slag bin is connected with a coal economizer. The cold slag machine has the advantages of large amount of cold slag and high cooling efficiency, thereby being capable of making full use of residual heat of slag and improving the heat efficiency of the boiler.
Description
One, technical field
The utility model relates to a kind of cold slag machine, relates in particular to the energy-conservation cold slag machine of a kind of CFBB multi-chamber.
Two, background technology
At present, the ciculation fluidized boiler of domestic firepower power station is put existing thousands of into commercial operation, the cold slag machine class used of matching with it is various, but result of use is not good enough, there are many technical defectives and deficiency, be difficult to ensure that boiler normally moves the needs of deslagging cooling, and the waste heat of slag can't reclaim, leakage phenomenon is very outstanding, has a strong impact on production environment.The cold slag machine of all kinds that has put into operation at present has the following disadvantages:
(1) the cold slag machine of roller exists wear-out defect, leakage phenomenon to happen occasionally, and potential hidden peril of explosion is arranged, and can not reclaim the waste heat of slag, and water consumption is big;
(2) wind and water combined cold slag machine easily stops up, coking, and deslagging is not smooth, defectives such as undercapacity;
(3) air bath type slag cooling machine, air-cooled ratio is too big, and erosive wear is serious in the bed, and big slag cooling is not enough.
In addition, the external all kinds of cold slag machine of introducing, easily stops up when particularly the quantity of slag is big because domestic ature of coal is poor, and it is poor that coal often changes adaptive capacity, coking, and it is not enough to exert oneself, and the slag temperature is higher, influences the stove internal combustion, can't ensure the normal stable operation of boiler.
Three, summary of the invention
At above-mentioned shortcoming, the purpose of this utility model is to provide that a kind of cold quantity of slag is big, cooling effectiveness is high, can fully recycle the waste heat of slag and improve the energy-conservation cold slag machine of CFBB multi-chamber of boiler thermal output.
Technology contents of the present utility model is, the energy-conservation cold slag machine of a kind of CFBB multi-chamber, comprise body, it is characterized in that in body, being provided with two withes, two withes are divided into a thick slag storehouse and two thin slag storehouses with storehouse in the body, the middle part in thick slag position in storehouse storehouse in body, two thin slag storehouses are located at the both sides in thick slag storehouse; On the body of each upper end, thin slag storehouse, be provided with a return air returning charge mouth; On the body of the upper end in preceding thick slag storehouse, be provided with a slag inlet; Bottom in thick slag storehouse is provided with a porous plate with holes, is provided with a thick slag slag-drip opening at the end of porous plate, and the porous plate lower end is connected and installed with the balance bellows, and the porous plate mounting means is that front end height, end are low, and the angle of porous plate and organism soleplate is 4～8 °; Each is installed and is connected with a channeling groove guide plate in the both sides of the close withe of porous plate, installs between the gentle groove guide plate of adjacent withe and is connected with a fin panel casing; In thin slag storehouse, be provided with snakelike cooling coil, have some blowhole on the body of bottom, thin slag storehouse, on each blowhole, be set with a bell-jar blast cap; Thick slag storehouse and back slag storehouse slightly before the middle part in thick slag storehouse is established an across bulkhead thick slag storehouse is intercepted; The thin slag storehouse in thin slag storehouse and back is connected and installed with balance bellows respectively on the body of the thin lower end, slag storehouse in preceding thin slag storehouse and back before the middle part in each thin slag storehouse is established an across bulkhead thin slag storehouse is intercepted; The vertical respectively fin panel casing that is equipped with on the body inwall in the thin slag storehouse in close preceding thin slag storehouse and back; Be provided with a passage in each across bulkhead middle and lower part; On the body of the back carefully rear end in slag storehouse, respectively be provided with an overflow and slag mouth; Snakelike cooling coil in preceding thin slag storehouse is connected on the economizer.
Discharge smoothly for the ease of thick slag, be provided with many group high pressure and purge thick slag tuyere on porous plate, high pressure purges the nozzle face of thick slag tuyere to thick slag slag-drip opening.
In the timely discharge that can not normally move cinder in opportunity, on the body of preceding thin slag storehouse and back bottom, thin slag storehouse, be provided with the accident slag-drip opening for ease of cold slag machine.
Be to improve the service life of fin panel casing, be covered with on the surface of fin panel casing that the wear-resisting heat transfer of one deck is plastic waters material feeding.
Ruuning situation when working for ease of observing cold slag machine is provided with sight glass on body.
The height of withe is 800～1500mm in the energy-conservation cold slag machine of above-mentioned CFBB multi-chamber; The height of across bulkhead is 800～1500mm; The length of passage is 500～1800mm, highly is 100～400mm.
During the utility model work, the high temperature sludge that boiler furnace is discharged at first enters thick slag storehouse by slag feed pipe, cooling air in the balance bellows gets up the slag fluidisation and cools off through porous plate, simultaneously, to slag carry out slightly, segment from, make the fine grained slag cross the overflow of vertical obstruct wall to thin slag storehouse from the right and left; The thick slag that can not cross withe about slag temperature drop to 150 ℃, is discharged by thick slag slag-drip opening under the common cooling effect of fluidized wind and fin panel casing then; The fine grained slag in thin slag storehouse is further cooled under the common cooling effect of fluidized wind and serpentine coil before entering; Blowhole by bottom, thin slag storehouse makes the slag in the thin slag storehouse only reach little bubbling bed state, enters thin slag storehouse, back respectively so most slag can only pass the passage of horizontal obstruct wall lower end after the cooling of preceding thin slag storehouse; Enter the slag (comprise from thick slag storehouse, back and cross the fine grained slag that vertical obstruct wall enters) in thin slag storehouse, back, under the further common cooling effect of fluidized wind and serpentine coil, temperature drops to 100～150 ℃, and overflow is discharged by the overflow and slag mouth then; The fluidized wind of heating will carry some fine breezes that do not burn and the agstone that do not utilize is fully discharged through return air returning charge mouth with hot blast.
The utility model passes through the snakelike cooling coil of front end in the thin slag storehouse, cooling water is from steam turbine workshop Gao Jiashui, carry out first heat exchange cooling, thereby improved height and added water temperature, played obvious effect to improving boiler thermal output, the rear end adopts condensed water to do ultimate cooling, be provided with the waste heat that the hot blast return aperture can fully reclaim slag at the body top, on porous plate, be provided with simultaneously many group high pressure and purge thick slag tuyere, solve big slag and stopped up defective, can satisfy Large-scale CFB boiler safety, stable operation fully, not only energy-conservation but also environmental protection.
The utlity model has following beneficial effect:
1, fully recycled the waste heat of furnace bottom slag, and adopt first and add water from steam turbine workshop height and make first cooling medium, can improve the thermal efficiency of boiler effectively, the high parameter that adapts to CFBB maximizes, in particular for the supporting application of large and medium-sized boiler, energy conservation and consumption reduction effects is fairly obvious.
2, the cooling quantity of slag is big, the cooling effectiveness height.
3, air-cooled is auxilliary, and water-cooled is main, and the water-cooled ratio can reach 70～80%.
4, return air temperature is higher, generally is higher than 300 ℃, and air quantity is less, effectively reduces the disturbance to situations such as burner hearth internal combustion, and by return air can the recovery section fine grained to improve the fluidization quality in the stove.
5, by the thickness slag centrifugation of channeling groove separation bin, guaranteed that coarse granule can not enter thin slag storehouse, the bad and obstruction of the fluidisation of having avoided big slag to cause.
6, except that thick slag storehouse, slag granules is thinner in other each storehouse, just can satisfy its fluidized flow with very little air quantity, effectively reduces the wearing and tearing of water-cooled tube bank.
Four, description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 be among Fig. 1 A-A to schematic diagram.
Fig. 3 be among Fig. 2 B-B to schematic diagram.
Fig. 4 is the schematic diagram of the angle of porous plate and organism soleplate in the utility model.
Five, the specific embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the energy-conservation cold slag machine of a kind of CFBB multi-chamber, comprise body 1, it is characterized in that in body, being provided with two withes 2, two withes are divided into a thick slag storehouse 3 and two thin slag storehouses 4 with storehouse in the body, thick slag storehouse 3 is positioned at the middle part in body storehouse 1.1, and two thin slag storehouses 4 are located at the both sides in thick slag storehouse 3; On the body 1 of each 4 upper end, thin slag storehouse, be provided with a return air returning charge mouth 5; On the body 1 of the upper end in preceding thick slag storehouse 3, be provided with a slag inlet 1.2; Bottom in thick slag storehouse 3 is provided with a porous plate 6 with holes, end at porous plate 6 is provided with a thick slag slag-drip opening 6.1, porous plate 6 lower ends are connected and installed with balance bellows 7, and porous plate 6 mounting means are front end height, terminal low, and the angle β of porous plate 6 and organism soleplate is 4～8 °; Each is installed and is connected with a channeling groove guide plate 8 in the both sides of porous plate 6 close withes 2, installs between adjacent withe 2 gentle groove guide plates 8 and is connected with a fin panel casing 9; In thin slag storehouse 4, be provided with snakelike cooling coil 10, have some blowhole 1.3 on the body 1 of thin 4 bottoms, slag storehouse, on each blowhole 1.3, be set with a bell-jar blast cap 11; Thick slag storehouse 3.1 and back slag storehouse 3.2 slightly before the middle part in thick slag storehouse 3 is established an across bulkhead 12 thick slag storehouse 3 is intercepted; The thin slag storehouse 4.2 in thin slag storehouse 4.1 and back is connected and installed with balance bellows 7 respectively on the body 1 of thin 4.2 lower ends, slag storehouse in preceding thin slag storehouse 4.1 and back before the middle part in each thin slag storehouse 4 is established an across bulkhead 12 thin slag storehouse 4 is intercepted; The vertical respectively fin panel casing 9 that is equipped with on body 1 inwall in the thin slag storehouse 4.2 in close preceding thin slag storehouse 4.1 and back; Be provided with a passage 12.1 in each across bulkhead 12 middle and lower part; On the body 1 of the back carefully rear end in slag storehouse 4.2, respectively be provided with an overflow and slag mouth 1.4; Snakelike cooling coil 10 in preceding thin slag storehouse 4.1 links to each other with an economizer 13; Be provided with three groups of high pressure and purge thick slag tuyere 14 on porous plate 6, every group is that 2 high pressure purge thick slag tuyere 14, and high pressure purges the nozzle face of thick slag tuyere 14 to thick slag slag-drip opening 6.1; On the body 1 of thin 4.2 bottoms, slag storehouse in preceding thin slag storehouse 4.1 and back, be provided with accident slag-drip opening 1.5; Be covered with on the surface of fin panel casing 9 that the wear-resisting heat transfer of one deck is plastic waters material feeding 15; On body 1, be provided with sight glass 16; The height of withe 2 is 1000mm; The height of across bulkhead 12 is 1000mm; The height of passage 12.1 is 300mm.
The operation principle of the energy-conservation cold slag machine of CFBB multi-chamber: the red slag from burner hearth enters the thick slag of front end storehouse 3.1 by slag inlet 1.2, the wind that the balance bellows 7 of porous plate 6 lower ends are blown into blows afloat fluidisation through porous plate 6, makes the fine particle in the red slag carry out little bubbling cooling in the thin slag storehouse 4.2 in preceding thin slag storehouse 4.1 and back of climbing over the walls, the right left; Thick slag flows along thick slag slag-drip opening direction in thick slag storehouse 3, the while high pressure purges 14 pairs of thick slags of thick slag tuyere and purges, make thick slag enter thick slag storehouse, rear end 3.2, finally discharge at thick slag slag-drip opening by the passage 12.1 of the thick slag of front end storehouse 3.1 by across bulkhead 12 middle and lower parts; Before the passage 12.1 of thin slag by across bulkhead 12 middle and lower parts in the thin slag storehouse 4.1 flow in the thin slag storehouse 4.2, back, finally discharge by overflow and slag mouth 1.4; Add fin panel casing 9 and the thick slag that water enters the thick slag of front end storehouse 3.1 after by economizer 13 from steam turbine workshop height and carry out heat exchange, before the Gao Jiashui in the economizer 13 enters simultaneously in the snakelike cooling coil 10 in thin slag storehouse 4.1 and thin slag carry out heat exchange; In the snakelike cooling coil 10 in the fin panel casing 9 in thick slag storehouse, rear end 3.2, thin slag storehouse 4.2, back, feed condensed water respectively and thick slag carry out heat exchange with thin slag; The fluidized wind of heating is discharged through return air returning charge mouth 5.
Claims (6)
1. energy-conservation cold slag machine of CFBB multi-chamber, comprise body (1), it is characterized in that in body, being provided with two withes (2), two withes are divided into a thick slag storehouse (3) and two thin slag storehouses (4) with storehouse in the body, thick slag storehouse (3) is positioned at the middle part of body storehouse (1.1), and two thin slag storehouses (4) are located at the both sides in thick slag storehouse (3); On the body (1) of each upper end, thin slag storehouse (4), be provided with a return air returning charge mouth (5); On the body (1) of the upper end in preceding thick slag storehouse (3), be provided with a slag inlet (1.2); Bottom in thick slag storehouse (3) is provided with a porous plate (6) with holes, end at porous plate (6) is provided with a thick slag slag-drip opening (6.1), porous plate (6) lower end is connected and installed with balance bellows (7), porous plate (6) mounting means is a front end height, terminal low, and the angle β of porous plate (6) and organism soleplate is 4～8 °; Each is installed and is connected with a channeling groove guide plate (8) in the both sides of the close withe (2) of porous plate (6), installs between the gentle groove guide plate of adjacent withe (2) (8) and is connected with a fin panel casing (9); In thin slag storehouse (4), be provided with snakelike cooling coil (10), have some blowhole (1.3) on the body (1) of bottom, thin slag storehouse (4), on each blowhole (1.3), be set with a bell-jar blast cap (11); Thick slag storehouse (3.1) and back slag storehouse (3.2) slightly before the middle part in thick slag storehouse (3) is established an across bulkhead (12) thick slag storehouse (3) is intercepted; The thin slag storehouse (4.2) in thin slag storehouse (4.1) and back before the middle part in each thin slag storehouse (4) is established an across bulkhead (12) thin slag storehouse (4) is intercepted, preceding thin slag storehouse (4.1) and after carefully be connected and installed with balance bellows (7) respectively on the body (1) of lower end, slag storehouse (4.2); The vertical respectively fin panel casing (9) that is equipped with on body (1) inwall in the thin slag storehouse (4.2) in close preceding thin slag storehouse (4.1) and back; Be provided with a passage (12.1) in each across bulkhead (12) middle and lower part; On the body (1) of the back carefully rear end in slag storehouse (4.2), respectively be provided with an overflow and slag mouth (1.4); Snakelike cooling coil (10) in preceding thin slag storehouse (4.1) links to each other with an economizer (13).
2. the energy-conservation cold slag machine of CFBB multi-chamber according to claim 1, it is characterized in that on porous plate (6), being provided with many group high pressure and purge thick slag tuyere (14), every group is that 2 high pressure purge thick slag tuyere (14), and high pressure purges the nozzle face of thick slag tuyere (14) to thick slag slag-drip opening (6.1).
3. the energy-conservation cold slag machine of CFBB multi-chamber according to claim 1 is characterized in that being provided with accident slag-drip opening (1.5) on the body (1) of preceding thin slag storehouse (4.1) and back bottom, thin slag storehouse (4.2).
4. the energy-conservation cold slag machine of CFBB multi-chamber according to claim 1 is characterized in that being covered with on the surface of fin panel casing (9) that the wear-resisting heat transfer of one deck is plastic waters material feeding (15).
5. the energy-conservation cold slag machine of CFBB multi-chamber according to claim 1 is characterized in that being provided with sight glass (16) on body (1).
6. the energy-conservation cold slag machine of CFBB multi-chamber according to claim 1, the height that it is characterized in that withe (2) is 800～1500mm; The height of across bulkhead (12) is 800～1500mm; The length of passage (12.1) is 500～1800mm, highly is 100～400mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202328759U CN201496951U (en) | 2009-07-24 | 2009-07-24 | Multi-bin type energy-saving cold slag machine of circulating fluidized bed boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202328759U CN201496951U (en) | 2009-07-24 | 2009-07-24 | Multi-bin type energy-saving cold slag machine of circulating fluidized bed boiler |
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| CN201496951U true CN201496951U (en) | 2010-06-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095197A (en) * | 2011-03-08 | 2011-06-15 | 中国华能集团清洁能源技术研究院有限公司 | Hearth of circulating fluidized bed boiler with bottom slag cooling and central air supply integrated design |
| CN105567890A (en) * | 2015-12-21 | 2016-05-11 | 重庆大学 | Combined fluidized bed type gas-solid heat exchange device utilizing waste heat of furnace slag |
| CN108369004A (en) * | 2015-12-07 | 2018-08-03 | 川崎重工业株式会社 | Dust removing system |
| EP4372279A1 (en) * | 2022-11-16 | 2024-05-22 | CERI Environment Protection Technology Co. Ltd. | Nested ash discharge structure and ash discharge method in high-temperature dedusting apparatus |
-
2009
- 2009-07-24 CN CN2009202328759U patent/CN201496951U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095197A (en) * | 2011-03-08 | 2011-06-15 | 中国华能集团清洁能源技术研究院有限公司 | Hearth of circulating fluidized bed boiler with bottom slag cooling and central air supply integrated design |
| CN102095197B (en) * | 2011-03-08 | 2012-08-22 | 中国华能集团清洁能源技术研究院有限公司 | Hearth of circulating fluidized bed boiler with bottom slag cooling and central air supply integrated design |
| CN108369004A (en) * | 2015-12-07 | 2018-08-03 | 川崎重工业株式会社 | Dust removing system |
| CN108369004B (en) * | 2015-12-07 | 2020-03-03 | 川崎重工业株式会社 | Ash discharge system |
| CN105567890A (en) * | 2015-12-21 | 2016-05-11 | 重庆大学 | Combined fluidized bed type gas-solid heat exchange device utilizing waste heat of furnace slag |
| CN105567890B (en) * | 2015-12-21 | 2018-01-09 | 重庆大学 | Utilize the composite fluidization bed gas-solid heat exchange device of afterheat of slags |
| EP4372279A1 (en) * | 2022-11-16 | 2024-05-22 | CERI Environment Protection Technology Co. Ltd. | Nested ash discharge structure and ash discharge method in high-temperature dedusting apparatus |
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Granted publication date: 20100602 Termination date: 20110724 |