CN101251251A - Device for cooling ash - Google Patents
Device for cooling ash Download PDFInfo
- Publication number
- CN101251251A CN101251251A CNA2008100238298A CN200810023829A CN101251251A CN 101251251 A CN101251251 A CN 101251251A CN A2008100238298 A CNA2008100238298 A CN A2008100238298A CN 200810023829 A CN200810023829 A CN 200810023829A CN 101251251 A CN101251251 A CN 101251251A
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- Prior art keywords
- ash
- cooling
- tube plate
- valve
- bucket
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Abstract
The invention relates to a cooling ash device, particularly the cooling ash device for the ash hold of a return feeder of a cycle fluidized-bed boiler. An inlet ash bucket is arranged above a drum body which is provided with a safety valve, a support, a drain valve, a deflation valve and an outlet ash bucket, an ash discharge valve is arranged under the outlet ash bucket. The invention is characterized in that an upper tube plate and a lower tube plate are arranged in the drum body respectively, tubes are connected between the upper tube plate and the lower tube plate, the drum body, the upper tube plate and the lower tube plate as well as the tubes form a cooling cavity. The outlet ash bucket is provided with a guiding plate. The structure of the cooling ash device is simple, compact and reasonable; according to the quantity of ash and the temperature, the cooling ash device is selected for using through adjusting the diameters of the drum body and the tube plates and the number of the tubes to realize the discharging safely; the cooling ash device is used through adjusting the flow rate of cooling water; the cooling ash device can recycle the heat of fine fly ash in the return feeder arranged on the lower of a separator to increase the process of the fine fly ash, so as to achieve the aim of discharging fine fly ash safely.
Description
Technical field
The present invention relates to a kind of device for cooling ash, specifically be used for the CFBB material returning device and put ash.
Background technology
At present, most CFBBs are not installed device for cooling ash under material returning device.When normal blowing out,, cause furnace outage time to prolong if ash more than 900 ℃ is not bled off and need could lower furnace temperature for a long time; As the accident blowing out, need rush repair, for accelerating cooling rate, have to bleed off hot ash.Two cyclone separators of a 75t/h CFBB operated by rotary motion; During normal the operation, the ash of about storage more than 5 cubic metres in every separator, every stove is about more than 10 cubic metres.So many heat ash is not only stacked nowhere, even there is the ash of local so high temperature also very dangerous.In addition, there is seldom CFB boiler under material returning device, install and adds the shell type device for cooling ash.This structure is similar to smaller hard flour pancake boiler, has two different cylindrical shells of diameter to be nested together mutually to form to add cover, and be cooling medium water therebetween, be thin grey passage in the inner barrel cavity; On the inner surface of inner barrel, be provided with vertical or horizontal band steel,, reach effective heat absorption cooling purpose to increase the flow process of thin ash.This type of device for cooling ash is because thin ash is too little with the contact area of cooling medium water, and thin ash is most of directly to be flow through and discharge from inner barrel, and therefore the temperature drop of thin ash is very limited, can not reach the purpose of thin grey safety dumping.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of device for cooling ash is provided, the heat of thin ash in the material returning device of energy recovery separator bottom; To increase the flow process of thin ash, reach the purpose of thin grey safety dumping.
Main solution of the present invention is achieved in that
The present invention adopts into ash bucket to be arranged on the cylindrical shell upper end, is provided with safety valve, bearing, blowoff valve and vent valve on cylindrical shell, goes out ash bucket and is installed in the cylindrical shell lower end, and ash-valve is installed in out the ash bucket below; Feature is that up and down two tube sheets are separately positioned in the cylindrical shell, and pipe is connected up and down between two tube sheets, and cylindrical shell is with two tube sheets and pipe form cooling chamber up and down.
Describedly go out in the ash bucket to be provided with deflector.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; For reaching the safety dumping purpose, design can realize by adjusting cylindrical shell and the size of tube sheet diameter, the quantity of pipe according to the height of what and temperature thereof of ash amount when selecting for use, can realize by the flow of regulating cooling water during use; The heat of thin ash in the material returning device of energy recovery separator bottom; Increase the flow process of thin ash, thereby reach the purpose of thin grey safety dumping.
Description of drawings
Fig. 1 is a structural front view of the present invention.
Fig. 2 is the cross-sectional view of device for cooling ash of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing of the present invention its enforcement is further described:
The present invention mainly by advance ash bucket 1, up and down two tube sheets 2, pipe 3, safety valve 4, delivery port 5, cylindrical shell 6, bearing 7, water inlet 8, blowoff valves 9, go out ash bucket 10, ash-valve 11 and vent valve 12 etc. and form.
The present invention adopts into that ash bucket 1 is arranged on cylindrical shell 6 upper ends, and two tube sheets 2 are separately positioned in the cylindrical shell two ends up and down, and pipe 3 is connected up and down between two tube sheets 2, and cylindrical shell 6 is with two tube sheets 2 and pipe 3 form cooling chambers up and down; Be respectively equipped with water inlet 8 and delivery port 5 on the cylindrical shell 6; On cylindrical shell 6, be provided with safety valve 4, bearing 7, blowoff valve 9 and vent valve 12.Go out ash bucket 10 and be installed in cylindrical shell 6 lower ends, ash-valve 11 is installed in out ash bucket 10 belows.
The operation principle of the present invention and the course of work:
The thin ash that comes from material returning device is introduced into into ash bucket 1, after being arranged in up and down the pipe 3 between two tube sheets 2, enters out ash bucket 10 then, and last cooled cold ash is discharged through ash-valve 11.Prevent stifled ash for guaranteeing that thin grey flow is all even, in going out ash bucket 10, be provided with deflector.By cylindrical shell 6 with two tube sheets 2 and pipe 3 form cooling chamber up and down; Cooling medium water is flowed out by delivery port 5 after being entered this cavity and hot ash and carried out heat exchange by water inlet 8; Thin ash becomes counter-flow arrangement with cooling medium water.
For reaching the safety dumping purpose, design can realize by adjusting cylindrical shell 6 and the size of tube sheet 2 diameters, the quantity of pipe 3 according to the height of what and temperature thereof of ash amount when selecting for use; Can realize by the flow of regulating cooling water during use.
Claims (2)
1, a kind of device for cooling ash, adopt ash bucket (1) to be arranged on cylindrical shell (6) upper end, be provided with safety valve (4), bearing (7), blowoff valve (9) and vent valve (12) on cylindrical shell (6), go out ash bucket (10) and be installed in cylindrical shell (6) lower end, ash-valve (11) is installed in out ash bucket (10) below; It is characterized in that two tube sheets (2) are separately positioned in cylindrical shell (6) two ends up and down, between two tube sheets (2), cylindrical shell (6) was with two tube sheets (2) and pipe (3) form cooling chamber up and down about pipe (3) was connected.
2, a kind of device for cooling ash according to claim 1 is characterized in that describedly going out in the ash bucket (10) to be provided with deflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100238298A CN101251251A (en) | 2008-04-17 | 2008-04-17 | Device for cooling ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100238298A CN101251251A (en) | 2008-04-17 | 2008-04-17 | Device for cooling ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101251251A true CN101251251A (en) | 2008-08-27 |
Family
ID=39954775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100238298A Pending CN101251251A (en) | 2008-04-17 | 2008-04-17 | Device for cooling ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101251251A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287815A (en) * | 2011-06-22 | 2011-12-21 | 清华大学 | Device for regulating circulating ash flow of circulating fluidized bed boiler |
| CN102757822A (en) * | 2011-04-25 | 2012-10-31 | 烟台鑫丰源电站设备有限公司 | Fixed-type pressure-bearing hot ash cooling device |
| CN103644745A (en) * | 2013-12-27 | 2014-03-19 | 济宁华德环保能源科技有限责任公司 | Slag cooler for calcinator |
| US9335100B2 (en) | 2010-08-09 | 2016-05-10 | Southern Company | Ash and solids cooling in high temperature and high pressure environment |
-
2008
- 2008-04-17 CN CNA2008100238298A patent/CN101251251A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9335100B2 (en) | 2010-08-09 | 2016-05-10 | Southern Company | Ash and solids cooling in high temperature and high pressure environment |
| CN102757822A (en) * | 2011-04-25 | 2012-10-31 | 烟台鑫丰源电站设备有限公司 | Fixed-type pressure-bearing hot ash cooling device |
| CN102757822B (en) * | 2011-04-25 | 2013-09-25 | 烟台鑫丰源电站设备有限公司 | Fixed-type pressure-bearing hot ash cooling device |
| CN102287815A (en) * | 2011-06-22 | 2011-12-21 | 清华大学 | Device for regulating circulating ash flow of circulating fluidized bed boiler |
| CN103644745A (en) * | 2013-12-27 | 2014-03-19 | 济宁华德环保能源科技有限责任公司 | Slag cooler for calcinator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080827 |