CN2497160Y - Recirculating fluidized bed boiler red-slag cooling apparatus - Google Patents
Recirculating fluidized bed boiler red-slag cooling apparatus Download PDFInfo
- Publication number
- CN2497160Y CN2497160Y CN 01250384 CN01250384U CN2497160Y CN 2497160 Y CN2497160 Y CN 2497160Y CN 01250384 CN01250384 CN 01250384 CN 01250384 U CN01250384 U CN 01250384U CN 2497160 Y CN2497160 Y CN 2497160Y
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- CN
- China
- Prior art keywords
- water
- gate valve
- pipe
- fluidized bed
- cold slag
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- Expired - Fee Related
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Abstract
The utility model discloses a red slag cooling device used for a circulating fluidized bed boiler. The utility model consists of a slag cooler, a deoxidizing device, an adjusting valve, a gate valve and a pipeline. The utility model is characterized in that a three-way pipe is respectively connected with branch pipes, and a water-filling nozzle of the deoxidizing device is connected with the adjusting valve and branch pipes of the three-way pipe; a water-draining nozzle of the deoxidizing device is connected through the pipeline with an outlet gate valve of the slag cooler, and a cooling water inlet and a cooling water outlet of the slag cooler are respectively connected with a water inlet gate valve and a water outlet gate valve; a water-filling gate valve is connected with branch pipes of the three-way pipe. The utility model has a simple structure, and the operation is convenient and the high efficiency, safe and long-term running of the slag cooler can be guaranteed, and filth is hard to be accumulated in the slag cooler and the heat energy can be recycled.
Description
The utility model relates to the energy project field, more specifically relates to a kind of red slag cooler for circular fluidized bed boiler.
About 800 ℃, the red slag that must utilize cold slag machine that boiler is discharged is cooled to could entrucking outward transport and comprehensive utilization below 200 ℃ usually for the deslagging temperature of CFBB.At present, in general engineering practice, cold slag machine adopts the cold slag machine of spiral, and cooling medium is mostly with industry water or recirculated water.When cooling water flows through cold slag machine,, make red slag cooling with the red slag indirect heat exchange of boiler by cold slag machine, cooling water flow out of cold slag machine after, temperature raises about 10 ℃, directly drains into trench or get back to cooling tower to recycle.
Because industry water and recirculated water hardness are higher, easily cause fouling in cold slag machine, cause heat transfer deterioration, and cause cold slag machine cisco unity malfunction, therefore for making cold slag machine operate as normal have to often carry out scale removal work such as pickling; Simultaneously, adopt the red slag of industry water or recirculated water cooling boiler also to cause the waste of the thermal loss and the energy.
The purpose of this utility model provides a kind of red slag cooler for circular fluidized bed boiler, and this apparatus structure is simple, and is easy to operate, can guarantee the long-time running of cold slag machine highly effective and safe, and reclaims heat.
In order to achieve the above object, the utility model adopts following technical measures: this device is made up of the cold slag machine of spiral, thermal deaerator, control valve, gate valve and connecting pipe.It is characterized in that three-way pipe is connected with arm respectively, the filling pipe of oxygen-eliminating device links to each other with the arm of control valve, three-way pipe, and the hydrophobic mouth of pipe of oxygen-eliminating device links to each other with the outlet gate valve of cold slag machine by pipeline.The cooling medium of the cold slag machine of spiral adopts demineralized water or soft water, and this makes that cold slag machine is less scaling, and reliability and security greatly improve.The cooling water of cold slag machine is entered oxygen-eliminating device after the red slag heating of boiler, thereby has been reduced the heating steam consumption of oxygen-eliminating device as the part of boiler water-filling, has improved the thermal efficiency of boiler unit.By adjusting the water inlet and the hydrophobic mouth of pipe in the thermal deaerator, make it be fit to answer the requirement of feedwater flow and changes in flow rate.The water yield through cold slag machine does not need to regulate, and the water level of oxygen-eliminating device is controlled by the control valve that another road replenishes on the water pipe.
The utility model compared with prior art, it is safe and reliable to operation, simple in structure, easy to operate to have equipment, cold slag machine is less scaling, has reached the result who improves utilization rate of waste heat.
Fig. 1 is a kind of red slag cooler for circular fluidized bed boiler schematic diagram.
Below in conjunction with accompanying drawing the utility model is described in further detail:
According to Fig. 1 as can be known, three-way pipe 1 is connected with arm 2, arm 6 respectively, and the import of three-way pipe 1 connects the water-main from demineralized water or soft water system, and outlet divides a two-way: the one tunnel directly enters the moisturizing mouth of pipe 4 of thermal deaerator 5 through control valve 3; Another road is through entering the hydrophobic mouth of pipe 11 of thermal deaerator behind the cold slag machine 8.Oxygen-eliminating device 5 has two water inlet pipes (being the moisturizing mouth of pipe 4 and the hydrophobic mouth of pipe 11), a steam inlet and an effluent pipe mouth.Effluent pipe mouth 12, deoxygenation steam pipe 13 are identical with conventional system.Outlet pipe 12 links to each other with oxygen-eliminating device 5, water pump respectively, and deoxygenation steam pipe 13 links to each other with oxygen-eliminating device 5, vapour system respectively.Since the conventional water inlet of the part of oxygen-eliminating device 5 water inlet (mouth of pipe 11) temperature ratio (mouth of pipe 14) temperature height, thereby reduced whole heating steam consumption, improved the thermal efficiency.The moisturizing mouth of pipe 4 of oxygen-eliminating device 5 links to each other with the outlet stool 2 of control valve 3, three-way pipe 1, forms the moisturizing the regulated loop of oxygen-eliminating device, can control the cistern water level of oxygen-eliminating device 5 by control valve 3, and make it to remain on certain level.Consider cold slag machine operation and overhaul two kinds of situations, the changes in flow rate scope of regulating the moisturizing loop is bigger than conventional system, thereby the adjustable extent broad of control valve 3.The hydrophobic mouth of pipe 11 of oxygen-eliminating device 5 links to each other with the outlet gate valve 9 of cold slag machine 8 by pipeline 10.Because the heat exchange in the cold slag machine 8 is an indirect heat exchange, cold slag machine 8 outlet water temperatures raise to some extent, and effluent quality can be not contaminated, can be used as supplementing water and enter oxygen-eliminating device 5.According to the cooling water inflow of cold slag machine 8 needs, the hydrophobic mouth of pipe 11 of oxygen-eliminating device 5 should suitably strengthen.The cooling water intake-outlet of cold slag machine 8 respectively with water inlet gate valve 7 with go out Water gate valve 9 and be connected.Water inlet gate valve 7 links to each other with the outlet stool 6 of three-way pipe 1.Cooling water carries out indirect heat exchange with the red slag of boiler in cold slag machine, make slag temperature have 800 ℃ to reduce to below 200 ℃.Because cooling water is demineralized water or soft water, avoided fouling in the cold slag machine, prolonged the cold slag machine life-span, improved reliability.Cold slag machine 8 can cut off its cooling water outlet and inlet gate valve 7 and go out Water gate valve 9, thereby cold slag machine is separated with cooling system during maintenance outage.
Claims (2)
1, a kind of red slag cooler for circular fluidized bed boiler, it comprises that cold slag machine (8), pipeline (10) constitute, it is characterized in that three-way pipe (1) is connected with arm (2), (6) respectively, the filling pipe (4) of oxygen-eliminating device (5) links to each other with the arm (2) of control valve (3), three-way pipe (1), and the hydrophobic mouth of pipe (11) of oxygen-eliminating device (5) links to each other with the outlet gate valve (9) of cold slag machine (8) by pipeline (10).
2, a kind of red slag cooler for circular fluidized bed boiler according to claim 1, the cooling water outlet and inlet that it is characterized in that cold slag machine (8) is respectively with water inlet gate valve (7) with go out Water gate valve (9) and be connected, and the gate valve (7) of intaking links to each other with the arm (6) of three-way pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01250384 CN2497160Y (en) | 2001-08-16 | 2001-08-16 | Recirculating fluidized bed boiler red-slag cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01250384 CN2497160Y (en) | 2001-08-16 | 2001-08-16 | Recirculating fluidized bed boiler red-slag cooling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2497160Y true CN2497160Y (en) | 2002-06-26 |
Family
ID=33660557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01250384 Expired - Fee Related CN2497160Y (en) | 2001-08-16 | 2001-08-16 | Recirculating fluidized bed boiler red-slag cooling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2497160Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022724A (en) * | 2011-01-11 | 2011-04-20 | 蒋卫东 | Slag cooler suitable for circulating fluidized bed boiler burning coal gangue and other low-grade fuels |
| CN102087024A (en) * | 2011-03-08 | 2011-06-08 | 北京交通大学 | Energy saving device for circulating fluidized bed boiler |
-
2001
- 2001-08-16 CN CN 01250384 patent/CN2497160Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022724A (en) * | 2011-01-11 | 2011-04-20 | 蒋卫东 | Slag cooler suitable for circulating fluidized bed boiler burning coal gangue and other low-grade fuels |
| CN102087024A (en) * | 2011-03-08 | 2011-06-08 | 北京交通大学 | Energy saving device for circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |