CN2722044Y - Combined water-air slag cooler of fluidized bed - Google Patents
Combined water-air slag cooler of fluidized bed Download PDFInfo
- Publication number
- CN2722044Y CN2722044Y CN 200420036974 CN200420036974U CN2722044Y CN 2722044 Y CN2722044 Y CN 2722044Y CN 200420036974 CN200420036974 CN 200420036974 CN 200420036974 U CN200420036974 U CN 200420036974U CN 2722044 Y CN2722044 Y CN 2722044Y
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- CN
- China
- Prior art keywords
- slag
- pipe
- cooling chamber
- fluid bed
- cooling
- Prior art date
- 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.)
- Expired - Lifetime
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a combined water-air slag cooler of fluidized bed, which is characterized in that the combined water-air slag cooler of fluidized bed is composed of a slag-entering mechanically controlled valve, a slag-entering pipe, a feed back exhaust pipe, a cooling chamber, a slag-dropping pipe, a partition wall, a snake-shaped cooling pipe and a wind cap. The slag-entering mechanically controlled valve is positioned on the slag-entering pipe, the slag-entering pipe is positioned on one end of the top of the cooling chamber, and the feed back exhaust pipe is positioned on the other end of the top of the cooling chamber; the partition wall on the middle of the cooling chamber is divided into two chambers, the top of the two chambers are communicated, and the same snake-shaped cooling pipes are respectively arranged on the middle of the two chambers of the cooling chamber; fluidizing wind caps are respectively arranged on a base plate, and the slag-dropping pipe is positioned on the upper end of the back wall of the cooling chamber. The utility model has the advantages that the remaining heat can be recycled, the release of SOx and NOx can be reduced to maximum limit to satisfy the requirement of environment protecting; big slag on the bottom of the boiler is not easy to sedimentate, and then the coking can be avoided; the combustion efficiency and the desulfurization efficiency of the boiler can be improved.
Description
Technical field
The utility model relates to a kind of fluid bed air-water combined slag cooler, can be used for the cooling of CFBB lime-ash, belongs to the slag cooler technical field.
Background technology
The CFBB lime-ash that uses is without handling at present, and lime-ash is directly discharged outside the boiler, and the shortcoming of Cun Zaiing is like this:
1. residual sulphur and nitrogen in the lime-ash still can discharge SOx and Nox, contaminated environment outside stove;
2. because the ash temperature of discharging from boiler is very high, its Physical Loss or Damage can reach more than 2%;
3. the big slag of boiler bottom deposits easily, causes coking, influences the active fluidization condition of boiler combustion.
Summary of the invention
The purpose of this utility model is the fluid bed air-water combined slag cooler of a kind of energy of invention recovery boiler lime-ash heat.
For realizing above purpose, the technical solution of the utility model provides a kind of fluid bed air-water combined slag cooler, it is characterized in that, by the slag input mechanically controlled valve, slag feed pipe, the feed back blast pipe, cooling chamber, slag dropping tube, partition wall, snakelike cooling water pipe, blast cap is formed, the slag input mechanically controlled valve places on the slag feed pipe, slag feed pipe places cooling chamber left side wall front end, the other end at cooling chamber top is equipped with the feed back blast pipe, cooling chamber is divided into two by the partition wall of centre, two top communicates, be equipped with identical snakelike cooling water pipe in the middle of cooling chamber two Room, evenly be equipped with the fluidisation blast cap on the base plate, slag dropping tube places the back wall upper end of cooling chamber.
The utility model is installed in the CFBB next door, adopt water, the air-cooled associating type of cooling reclaims the lime-ash heat, can regulate burner hearth material stock amount automatically by the slag input mechanically controlled valve, guarantee good fluidized state in the stove, because cooling chamber is divided into two by the partition wall of centre, lime-ash enters first cooling chamber, heat is taken away by the water in the snakelike cooling water pipe, the blast cap of cooling chamber bottom is opened simultaneously, the wind energy of evenly calling in from the bottom is blown out fluid bed to lime-ash, also taken away a part of heat of lime-ash, because the top of two cooling chambers communicates, being become the fluid bed lime-ash can fall second cooling chamber automatically by wind cools off once more, some unburnt fine breezes and the desulfurizing agent of underusing pass through feed back blast pipe loopback burner hearth again, improve burning and desulfuration efficiency, can recycle physical heat of ash dregs to greatest extent like this, the slag input temperature of slag cooler is 850 ℃～900 ℃, the cooling of two cooling chambers of process slag cooler, fall the tapping temperature of cinder notch less than 150 ℃, and the water temperature in the cooling chamber coiled pipe is heated to from 35 ℃ and is drawn out to heater about 70 ℃ again.
The utility model has the advantages that the energy recovery waste heat, reduce the release of SOx and Nox to greatest extent, satisfy environmental requirement, the big slag of boiler bottom is not easy deposition and causes coking, raising boiler combustion and desulfuration efficiency.
Description of drawings
Fig. 1 is a fluid bed air-water combined slag cooler structural representation;
Fig. 2 is a fluid bed air-water combined slag cooler side view.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As Fig. 1, shown in 2, be fluid bed air-water combined slag cooler structural representation, by slag input mechanically controlled valve 1, slag feed pipe 2, feed back blast pipe 3, cooling chamber 4, slag dropping tube 5, partition wall 6, snakelike cooling water pipe 7, blast cap 8 is formed, slag input mechanically controlled valve 1 places on the slag feed pipe 2, slag feed pipe 2 places an end at cooling chamber 4 tops, the other end at cooling chamber 4 tops is equipped with feed back blast pipe 3, cooling chamber 4 is divided into two by the partition wall 6 of centre, two top communicates, cooling chamber is equipped with identical snakelike cooling water pipe 7 in the middle of 4 liang of chambers, evenly be equipped with at least one blast cap 8 on the base plate, slag dropping tube 5 places the back wall upper end of cooling chamber 4.
Lime-ash mechanically controlled valve 1, its operation principle are the sizes according to the burner hearth back pressure, regulate the grey quantity of slag that enters slag cooler automatically by hydraulic piston structure or electric operator, and the lime-ash valve plug of mechanically controlled valve 1 has good wear-resisting and cooling system.
Slag feed pipe 2 is designed to the insulating and wear-resistant formula, be double-decker, outer is the pipeline that the thick carbon steel roll of steel plate of 10mm is made ￠ 1231.2mm, interior deposited nonmetal insulating and wear-resistant layer, thickness is 355.6mm, slag feed pipe adopts two constant force spring hanging frames, and load-bearing is provided with the expansion that non-metal expansion joint absorbs boiler on slag feed pipe on steelframe, it bears maximum compressibility is 180mm, circumferentially displacement is 30mm, and is withstand voltage+20KPa, and long-term serviceability temperature is 950 ℃.
Feed back blast pipe 3 is a double-decker, and internal layer adopts the high temperature resistant stainless steel coiled sheet to make the zinc-plated outer casing of external application light heat insulation material and metal.Height according to burner hearth pressure reduction decision feed back blast pipe, its overall weight is passed through two constant force spring hanging frame load-bearing on steelframe, because feed back blast pipe upper and lower displacement on the water-cooling wall, so it is bloated poor to absorb that non-metal expansion joint 9 is set in the lower end of feed back blast pipe with water-cooling wall breathing.When boiler startup non-metal expansion joint 9 by compression, maximum compressibility is 170mm, long-term serviceability temperature is 950 ℃, and requires expansion joint to carry thermal insulation and wearing layer.
4 fens I of cooling chamber, II two Room, the middle partition wall of being made by the fire-resistant abrasion-proof brick 6 separates, be equipped with identical snakelike cooling water pipe 7 in the middle of two Room, each pipe row reaches and adopts pipe clamp to fix between row and row, and pass gravity on the cooling chamber base plate by pipe clamp and tube support plate, pipe clamp adopts the accurate casting of heat resisting steel, has higher heat-resisting, wear resistence, and two pipe clamps are fastening with bolt and nut.
Cooling chamber 4 is a double-decker, and internal layer is wear-resisting, heat-insulation layer, and skin is the thick carbon steel steel plate of 10mm, and makes reinforcement with channel-section steel, is the detachable structure between top board and four side plates, in order to the installation and maintenance of cooling chamber 4 internal heating surfaces.Be drilled with the hole on the base plate, and weld 5#, 6#, three kinds of different blast caps 8 of 7# in the building site, the blast cap 8 of different model is mixed in the hole of diverse location.Adopt metal hose to be connected between blast cap 8 and the external air channel.The fluidisation air channel is a female pipe and four arms, and four arms are equipped with respectively surveys air quantity device and volume damper, to adjust air quantity and the fluidising air velocity and the blast of diverse location blast cap, guarantees the deslagging state that slag cooler is normal, stable.
Slag dropping tube 5 connects circular formula by square pipe and pipe with the side to be formed, and square pipe adopts the thick carbon steel steel plate of 10mm to be spliced, and pipe adopts the 10mm carbon steel sheet to roll.
Claims (5)
1. fluid bed air-water combined slag cooler, it is characterized in that, by slag input mechanically controlled valve (1), slag feed pipe (2), feed back blast pipe (3), cooling chamber (4), slag dropping tube (5), partition wall (6), snakelike cooling water pipe (7), blast cap (8) is formed, slag input mechanically controlled valve (1) places on the slag feed pipe (2), slag feed pipe (2) places cooling chamber (4) left side wall front end, the other end at cooling chamber (4) top is equipped with feed back blast pipe (3), cooling chamber (4) is divided into two by the partition wall (6) of centre, two top communicates, be equipped with identical snakelike cooling water pipe (7) in the middle of the cooling chamber Room (4) two, evenly be equipped with fluidisation blast cap (8) on the base plate, slag dropping tube (5) places the back wall upper end of cooling chamber (4).
2. fluid bed air-water combined slag cooler according to claim 1 is characterized in that, described slag feed pipe (2) is a double-decker, and internal layer is the insulating and wear-resistant layer, the outer pipeline that rolls for thick carbon steel steel plate.
3. fluid bed air-water combined slag cooler according to claim 1, it is characterized in that, described feed back blast pipe (3) is a double-decker, internal layer is that high temperature resistant stainless steel rolls into, skin is light heat insulation material and the zinc-plated outer casing of metal, and the lower end of feed back blast pipe (3) is provided with non-metal expansion joint (9).
4. fluid bed air-water combined slag cooler according to claim 1, it is characterized in that, described cooling chamber (4) is a double-decker, internal layer is wear-resisting, heat-insulation layer, skin is thick carbon steel steel plate, evenly be equipped with 5#, 6#, three kinds of different blast caps of 7# (8) on the base plate, be connected by metal hose between blast cap (8) and the air channel, outside.
5. fluid bed air-water combined slag cooler according to claim 1 is characterized in that, described slag dropping tube (5) is that square pipe and centre are that round pipe is formed by the two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420036974 CN2722044Y (en) | 2004-06-30 | 2004-06-30 | Combined water-air slag cooler of fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420036974 CN2722044Y (en) | 2004-06-30 | 2004-06-30 | Combined water-air slag cooler of fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722044Y true CN2722044Y (en) | 2005-08-31 |
Family
ID=35012415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420036974 Expired - Lifetime CN2722044Y (en) | 2004-06-30 | 2004-06-30 | Combined water-air slag cooler of fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722044Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453903C (en) * | 2006-08-10 | 2009-01-21 | 上海锅炉厂有限公司 | Method for cooling bottom dregs at fluid bed boiler |
| CN101225952B (en) * | 2007-01-20 | 2010-11-03 | 蒋德春 | Fluidized bed boiler slag-cooling device |
| CN101598334B (en) * | 2009-06-30 | 2010-12-08 | 上海锅炉厂有限公司 | Bottom slag cooling method of circulating fluidized bed |
| CN103217029A (en) * | 2013-03-26 | 2013-07-24 | 蚌埠市佳力化工有限责任公司 | Waste treatment equipment of combustion furnace |
| CN110748879A (en) * | 2019-11-19 | 2020-02-04 | 大唐鸡西第二热电有限公司 | Device for enhancing smooth slag discharging at inlet of slag discharging pipe of 300MW circulating fluidized bed boiler and installation method |
-
2004
- 2004-06-30 CN CN 200420036974 patent/CN2722044Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453903C (en) * | 2006-08-10 | 2009-01-21 | 上海锅炉厂有限公司 | Method for cooling bottom dregs at fluid bed boiler |
| CN101225952B (en) * | 2007-01-20 | 2010-11-03 | 蒋德春 | Fluidized bed boiler slag-cooling device |
| CN101598334B (en) * | 2009-06-30 | 2010-12-08 | 上海锅炉厂有限公司 | Bottom slag cooling method of circulating fluidized bed |
| CN103217029A (en) * | 2013-03-26 | 2013-07-24 | 蚌埠市佳力化工有限责任公司 | Waste treatment equipment of combustion furnace |
| CN110748879A (en) * | 2019-11-19 | 2020-02-04 | 大唐鸡西第二热电有限公司 | Device for enhancing smooth slag discharging at inlet of slag discharging pipe of 300MW circulating fluidized bed boiler and installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140630 Granted publication date: 20050831 |