CN104566355B - Intensive cooling device for circulating ash of circulating fluidized bed boiler - Google Patents
Intensive cooling device for circulating ash of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN104566355B CN104566355B CN201410792970.XA CN201410792970A CN104566355B CN 104566355 B CN104566355 B CN 104566355B CN 201410792970 A CN201410792970 A CN 201410792970A CN 104566355 B CN104566355 B CN 104566355B
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- Prior art keywords
- section
- heat
- dipleg
- cylinder
- strengthening
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Classifications
-
- 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
-
- 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
- F23C2206/103—Cooling recirculating particles
Abstract
The invention relates to an intensive cooling device for circulating ash of a circulating fluidized bed boiler. The intensive cooling device comprises a separating cylinder, wherein the separating cylinder sequentially comprises a straight cylinder section, a tapered section and a dipleg section from top to bottom, and a center cylinder is arranged in the straight cylinder section; an inlet is formed in the side wall of the straight cylinder section, and intensive cooling mechanisms are arranged in the tapered section and the dipleg section. The intensive cooling device is characterized in that the intensive cooling mechanism comprises heat transfer pipes in the wall bodies of the tapered section and the dipleg section, and the axial direction of the heat transfer pipes is respectively parallel with the walls of the tapered section and the dipleg section; the upper ends of the heat transfer pipes in the tapered section and the upper ends of the heat transfer pipes in the dipleg section outwardly bend and then extend out of the wall of the separating cylinder. One side, close to the inner side of the separating cylinder, of each heat transfer pipe is connected with a heat conducting plate longitudinally running through the total length of the heat transfer pipe, and a gap is reserved between the inner side of the heat conducting plate and the inner side of the separating cylinder. The intensive cooling device provided by the invention has the advantages of small size, small metal pipeline consumption, easiness in installation, low cost, capabilities of avoiding pipeline wear and booster failure and improving the utilization rate of heating area of a separator, and is suitable for a flue gas separator of the circulating fluidized bed boiler.
Description
Technical field
The present invention relates to a kind of chiller.Specifically, it is the chiller that circulating ash can be carried out strengthen with cooling, especially
It is applied on the smoke separator of CFBB.
Background technology
Both know about in boiler for producing industry, the smoke separator of CFBB is both provided with greatly circulating ash cooling
Mechanism, this cooling body is provided in the cooling body inside separator direct tube section and cone section.This cooling body mainly has
Air cooling cooling body and cooling by water mechanism, both cooling bodies are all in corresponding separator direct tube section and cone section disposed inboard
Pipeline, and logical cold air and cold water into pipeline respectively, cold air or cold water using Bottomhole pressure carry out heat exchange to pipeline and dock
The circulating ash contacting pipeline is cooled down.This cooling body has the following disadvantages, and one is because cooling body is arranged on straight tube
Inside the wall of section, volume is big, and the metallic conduit of needs is many, and production cost is high.And difficulty of processing is big, general boiler for producing
Enterprise's processing is relatively difficult.Two is that a set of cooling body need to divide 3 ~ 5 to dispatch from the factory, and is assembled to building-site because volume is big,
Mounting cost is many, high cost.Three is that during boiler operatiopn, separator is straight because cooling body is arranged on inside the wall of direct tube section
The cooling body of cylinder section is first subjected to the smoke-shock from import, and abrasion, booster fault easily in the pipeline in cooling body.
Four be due to separator direct tube section and cone section inside be provided with cooling body, these cooling bodies blocked circulating ash so that
The contact area of the circulating ash that separator separates and separator inwall only have that separator total heating surface amasss less than 30%., fall
The low utilization rate of separator heating surface area.
Content of the invention
The problem to be solved in the present invention is to provide a kind of CFBB circulating ash to strengthen chiller.This cooling
Device, not only small volume, consume metallic conduit few, be easily installed, low production cost, and avoid pipe wear, booster therefore
Barrier, improves the utilization rate of separator heating surface area.
The invention solves the problems that the problems referred to above realized by technical scheme below:
The present invention CFBB circulating ash strengthening chiller include cylinder, this cylinder from top to bottom according to
Secondary for direct tube section, cone section and dipleg section, described direct tube section, cone section and dipleg section are structure as a whole, and the junction of inner chamber is in stream
Line is excessive.In direct tube section, suspention has central tube, and the side wall of direct tube section has import.All have for right in described cone section and dipleg section
The strengthening cooling body that circulating ash is cooled down.It is characterized in that described strengthening cooling body includes casting in cone section and dipleg section wall
The axial direction of internal heat-transfer pipe, cone section and the heat-transfer pipe in dipleg section body of wall is parallel with the wall of be located cone section and dipleg section respectively
And it is uniform along the circumferencial direction of cone section and dipleg section.Heat-transfer pipe upper end in described cone section is stretched out in cylinder after being bent outwardly
It is connected with coolant source outside wall and by pipeline, the wall in cylinder is stretched out in the heat-transfer pipe upper end in dipleg section after being bent outwardly
It is connected with coolant source outside wall and by pipeline.Described heat-transfer pipe is all connected near the side of cylinder medial surface and passes through heat-transfer pipe
The heat-conducting plate of overall length, leaves spacing between the inside of described heat-conducting plate and cylinder medial surface.
As can be seen from the above scheme, due to being only provided with strengthening cooling body in cone section or dipleg section body of wall, and cold
But mechanism is arranged on the direct tube section of separator and compares, small volume, and the metallic conduit of needs is few, low production cost.Due to difficult processing
Degree is little, and general boiler for producing enterprise can process.Due to small volume, cooling body can be installed in factory, the whole series are dispatched from the factory, no
Building-site need to be arrived assembled, mounting cost is few, low cost.Again due to strengthening heat-transfer pipe and the heat conduction plate casting of cooling body
In cone section or dipleg section body of wall, it is to avoid cooling body block circulating ash, so that the circulating ash that separates of separator with point
Contact area from device inwall increases, thus improve the utilization rate of separator heating surface area.
Brief description
Fig. 1 is the CFBB circulating ash strengthening chiller structural representation of the present invention；
Fig. 2 is the a-a cross-sectional schematic of Fig. 1；
Fig. 3 is the i point enlarged drawing of Fig. 2.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the CFBB circulating ash strengthening chiller of the present invention includes separating
Cylinder, this cylinder is followed successively by direct tube section 3, cone section 4 and dipleg section 5 from top to bottom, between described direct tube section 3 and cone section 4, cone section 4 with
Dipleg 5 is intersegmental to be all structure as a whole, and the medial surface of junction is all excessive in streamline.In direct tube section 3, suspention has central tube 2, directly
The import 1 entering in cylinder for flue gas is machined with the side wall of cylinder section 3.Described cone section 4 and dipleg section 5 in be provided with for
The strengthening cooling body that circulating ash is cooled down.Described strengthening cooling body includes casting in cone section 4 and dipleg section 5 body of wall 7
Interior heat-transfer pipe 6, described heat-transfer pipe 6 axially parallel with the wall of be located cone section 4 and dipleg section 5 respectively and respectively along cone section 4
Uniform with the circumferencial direction of dipleg section 5.The wall in cylinder is stretched out in heat-transfer pipe 6 upper end in described cone section 4 after being bent outwardly
Outside and be connected with coolant source by pipeline, the wall in cylinder is stretched out in heat-transfer pipe 6 upper end in dipleg section 5 after being bent outwardly
Outside and be connected with coolant source by pipeline.Described heat-transfer pipe 6 is all welded near the side of cylinder medial surface and passes through heat transfer
The heat-conducting plate 8 of pipe 6 overall length, described heat-conducting plate 8 is strip plate, between the inside of described heat-conducting plate 8 longitudinal direction and cylinder medial surface
Leave the spacing of 50mm.
Wherein:
Centrage between described 8 liang of plate faces of heat-conducting plate is overlapped with the cross-sectional diameter line of place heat-transfer pipe 6；
The width of described heat-conducting plate 8 is 50mm, length is 500mm；
Spacing between described cone section 4 two piece heat-conducting plates 8 corresponding with dipleg section 5 is 500mm.
Described heat-conducting plate 8 has three, has angle а between the adjacent plate face of heat-conducting plate 8, and described angle а is 35 degree.
In addition, being in middle that heat-conducting plate 8 the inside and cylinder away from that nearest heat-conducting plate 8 of cylinder medial surface
Spacing 9 is left, this spacing 9 is 50mm between side.
Claims (8)
1. CFBB circulating ash strengthening chiller, including cylinder, this cylinder is followed successively by straight tube from top to bottom
Section (3), cone section (4) and dipleg section (5), described direct tube section (3), cone section (4) and dipleg section (5) are structure as a whole, and inner chamber
Junction is in that streamline is excessive；In direct tube section (3), suspention has central tube (2), and the side wall of direct tube section (3) has import (1)；Described cone
All there is the strengthening cooling body for being cooled down to circulating ash in section (4) and dipleg section (5)；It is characterized in that described strengthening is cold
But mechanism includes casting in the heat-transfer pipe (6) in cone section (4) and dipleg section (5) body of wall, in cone section (4) and dipleg section (5) body of wall
Heat-transfer pipe (6) axially parallel with the wall of be located cone section (4) and dipleg section (5) respectively and along boring section (4) and dipleg section (5)
Circumferencial direction uniform；Heat-transfer pipe (6) upper end in described cone section (4) is stretched out outside the wall of cylinder simultaneously after being bent outwardly
Be connected with coolant source by pipeline, heat-transfer pipe (6) upper end in dipleg section (5) stretch out after being bent outwardly cylinder wall it
It is connected by pipeline outward and with coolant source；Described heat-transfer pipe (6) is all connected near the side of cylinder medial surface passes through heat-transfer pipe
(6) heat-conducting plate (8) of overall length, leaves spacing (9) between the inside of described heat-conducting plate (8) and cylinder medial surface.
2. CFBB circulating ash according to claim 1 strengthening chiller is it is characterised in that described heat conduction
Centrage between plate (8) two plate face is overlapped with the cross-sectional diameter line of place heat-transfer pipe (6).
3. CFBB circulating ash according to claim 1 strengthening chiller is it is characterised in that described heat conduction
Width≤the 100mm of plate (8), length≤1000mm.
4. CFBB circulating ash according to claim 1 strengthening chiller is it is characterised in that described cone section
(4) spacing≤1000mm between corresponding two piece heat-conducting plates (8) upper with dipleg section (5).
5. CFBB circulating ash according to claim 1 strengthening chiller is it is characterised in that described heat conduction
Plate (8) at least two, has angle between the plate face of adjacent heat-conducting plate (8).
6. CFBB circulating ash according to claim 1 strengthening chiller is it is characterised in that described heat conduction
Plate (8) has two or three, has angle а between the plate face of adjacent heat-conducting plate (8).
7. the CFBB circulating ash strengthening chiller according to claim 5 or 6 is it is characterised in that described folder
Angle а≤35 degree.
8. according to claim 5 or 6 CFBB circulating ash strengthening chiller it is characterised in that away from separate
Spacing≤50mm and between cylinder medial surface inside nearest that heat-conducting plate (8) of cylinder medial surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792970.XA CN104566355B (en) | 2014-12-20 | 2014-12-20 | Intensive cooling device for circulating ash of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792970.XA CN104566355B (en) | 2014-12-20 | 2014-12-20 | Intensive cooling device for circulating ash of circulating fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104566355A CN104566355A (en) | 2015-04-29 |
| CN104566355B true CN104566355B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410792970.XA Active CN104566355B (en) | 2014-12-20 | 2014-12-20 | Intensive cooling device for circulating ash of circulating fluidized bed boiler |
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| CN (1) | CN104566355B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201221759Y (en) * | 2008-04-17 | 2009-04-15 | 无锡太湖锅炉有限公司 | Device for cooling ash |
| JP4512967B2 (en) * | 2001-06-20 | 2010-07-28 | 電源開発株式会社 | Furnace bottom ash circulation device and fluidized bed boiler operation method |
| CN202947126U (en) * | 2012-11-28 | 2013-05-22 | 瓮福（集团）有限责任公司 | Ash discharging and cooling device of circulating fluidized bed boiler |
| CN103822205A (en) * | 2014-03-04 | 2014-05-28 | 东南大学 | Circulating fluidized bed combustion device with internal double-inlet cyclone separator |
| CN204478037U (en) * | 2014-12-20 | 2015-07-15 | 无锡东马锅炉有限公司 | CFBB circulating ash strengthening cooling device |
-
2014
- 2014-12-20 CN CN201410792970.XA patent/CN104566355B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4512967B2 (en) * | 2001-06-20 | 2010-07-28 | 電源開発株式会社 | Furnace bottom ash circulation device and fluidized bed boiler operation method |
| CN201221759Y (en) * | 2008-04-17 | 2009-04-15 | 无锡太湖锅炉有限公司 | Device for cooling ash |
| CN202947126U (en) * | 2012-11-28 | 2013-05-22 | 瓮福（集团）有限责任公司 | Ash discharging and cooling device of circulating fluidized bed boiler |
| CN103822205A (en) * | 2014-03-04 | 2014-05-28 | 东南大学 | Circulating fluidized bed combustion device with internal double-inlet cyclone separator |
| CN204478037U (en) * | 2014-12-20 | 2015-07-15 | 无锡东马锅炉有限公司 | CFBB circulating ash strengthening cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104566355A (en) | 2015-04-29 |
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