CN203286557U - Cooling system for bottom slag of fluidized bed boiler - Google Patents
Cooling system for bottom slag of fluidized bed boiler Download PDFInfo
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- CN203286557U CN203286557U CN2013202434006U CN201320243400U CN203286557U CN 203286557 U CN203286557 U CN 203286557U CN 2013202434006 U CN2013202434006 U CN 2013202434006U CN 201320243400 U CN201320243400 U CN 201320243400U CN 203286557 U CN203286557 U CN 203286557U
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- slag
- cooling
- boiler
- negative pressure
- steel band
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Abstract
The utility model discloses a circulating cooling system for bottom slag of a fluidized bed boiler, which comprises a cooling unit connected with the boiler, a control unit and a deslagging unit, wherein the cooling unit comprises water-cooled roller slag coolers and a negative pressure air-cooled steel band machine, a closed casing is arranged at the periphery of the negative pressure air-cooled steel band machine in a sleeving manner, a cooling air inlet and a cooling air outlet are formed in the casing, the cooling air inlet is connected with an air blower, the cooling air outlet is connected with a furnace chamber of the boiler, and the air ingoing direction is opposite to the conveying direction of the negative pressure air-cooled steel band machine; the deslagging unit comprises a slag bin and a deslagging valve arranged on the slag bin; the control unit is a PLC control system. The cooling system has the benefits that the slag can be cooled quickly, the recovery of waste heat is high, the consumption of coal, water and power is saved, and meanwhile the recovery utilization of waste heat is high; the operation environment of the whole system is clean, and no dust pollution exists; the suitability for coal types is strong, and the impact resistance of the equipment is strong, and the abrasion is small.
Description
Technical field
The utility model relates to field of mechanical technique, is specifically related to a kind of cooling system for bottom dregs at fluid bed boiler.
Background technology
The cooling system of existing bottom dregs at fluid bed boiler is the structure that barrel slag cooler adds bucket conveyor, and there is following shortcoming in this structure:
1. cylinder type cold slag machine directly is connected with CFBB, is pressure-fired, and running environment is dirtier.
2. be subject to the heat exchange area constraint of slag and cold slag machine, slag be cooled to comparatively difficulty of 150 degree from 300, usually cause the area of cold slag machine cylinder 1/3 to be used for slag is cooled to 300 degree from 850 degree, and to be used for 2/3 area 300 to 150 spend cooling.
Along with recirculating fluidized bed towards large scale development and Coal Quality Decline, barrel slag cooler is exerted oneself and is also done larger and larger, the diameter of barrel slag cooler and length also increase thereupon, cold slag machine is large-scale rotation heat transmission equipment, the increase of diameter and length, make the manufacturing process more sophisticated, and is indeformable for making equipment barrel, barrel is also more and more thicker, and manufacturing cost constantly rises.
4. bucket conveyor non-refractory.
5. the system operation is stable not.
The utility model content
The purpose of this utility model is to provide a kind of cooling system for bottom dregs at fluid bed boiler, by adopting barrel slag cooler to coordinate cooling with the air-cooled steel band machine of negative pressure, overcome the above-mentioned defect of the cooling system of existing bottom dregs at fluid bed boiler, thereby realized the purpose of this utility model.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of circulating cooling system for bottom dregs at fluid bed boiler, comprise that the cooling unit, the control module that are connected with boiler close the deslagging unit, wherein:
Cooling unit comprises some water-cooled barrel slag coolers and a negative pressure wind cold type steel band machine, and the entrance of these water-cooled barrel slag coolers is connected with the slag-drip opening of boiler, and outlet connects the entrance of negative pressure wind cold type steel band machine;
The periphery of this negative pressure wind cold type steel band machine is arranged with the housing of a sealing, this housing is provided with a cooling air import, outlet, wherein the cooling air import connects a blower fan, and cooling air outlet is connected with the burner hearth of boiler, and the air intake direction is opposite with the transporting direction of this negative pressure wind cold type steel band machine;
The deslagging unit comprises a slag storehouse and is located at residual cake valve on this slag storehouse;
Control module is a PLC control system.
In a preferred embodiment of the present utility model, the water-cooled barrel slag cooler is arranged under the slag-drip opening of boiler.
The beneficial effects of the utility model are:
Cooled slag, high to the rate of recovery of waste heat fast, saves coal, water, power consumption, and the recovery utilization rate to waste heat is high simultaneously; Whole system running environment cleaning, no dust pollution; For the strong adaptability of coal, the equipment anti-shock performance is strong, weares and teares little.
Description of drawings
Fig. 1 is a kind of circulating cooling system for bottom dregs at fluid bed boiler described in the utility model schematic diagram in the specific implementation.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand,, below in conjunction with the specific embodiment, further set forth the utility model.
As shown in Figure 1, a kind of circulating cooling system for bottom dregs at fluid bed boiler described in the utility model comprises that the cooling unit 100, the control module that are connected with boiler close deslagging unit 200.
Negative pressure wind cold type steel band machine 120 is established a housing 121 and extraneous sealing by shroud outside, offers cooling air import, outlet 122,123 on this housing 121, and wherein cooling air import 122 is from blower fan, and cooling air outlet 123 connects boiler furnaces; And the air intake direction of cooling air import 122 is opposite with the transporting direction of negative pressure wind cold type steel band machine 120.
The outlet of negative pressure wind cold type steel band machine 120 is connected with conveyer 130, this conveyer 130 is transported to deslagging unit 200 along arrow 131 directions with cooled slag, bar deslagging unit 200 comprises slag storehouse 210 and is arranged at residual cake valve on slag storehouse 210, also is connected with the import 212 of water conservancy project industry water and compressed air system 213 on slag storehouse 210.
Control module is specially a PLC control system.
The utility model when specific works, boiler slag removal enter water-cooled barrel slag cooler 110 carry out cooling, after being cooled to 300 degrees centigrade from 850 degrees centigrade, entering negative pressure wind cold type steel band machine 120 carries out air-cooled, because slag is tiled on steel band, area of dissipation is large, can fast cooling; Slag is transported to slag storehouse 210 by conveyer 130 after being down to 150 degrees centigrade from 300 degrees centigrade, then by discharges such as residual cake valves, by car 211 outward transports.
The utility model utilizes water-cooled and air-cooled combination, takes full advantage of slag water-cooled thermal resistance when high temperature advantage little, that air-cooled contact area is large when low temperature and carries out coolingly, and cooling effectiveness is high; Moreover cooling water, cooling air can effectively reclaim a large amount of afterheat of slags, are conducive to improve boiler efficiency, reduce coal consumption.
Moreover, the cooling nozzle temperature rise, water consumption reduces, and reduces simultaneously power consumption, and the operation and maintenance cost effectively reduces.
Moreover, the operation of system negative pressure, negative pressure wind cold type steel band machine 120 outer cup, by housing 121, have been avoided dust pollution, and the whole service environment totally cleans.
Moreover the utility model is strong for different coal adaptabilities, and equipment heat resistanceheat resistant performance is strong, and the wearing and tearing for equipment simultaneously reduce.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. circulating cooling system that is used for bottom dregs at fluid bed boiler comprises that the cooling unit, the control module that are connected with boiler close the deslagging unit, is characterized in that:
Described cooling unit comprises some water-cooled barrel slag coolers and a negative pressure wind cold type steel band machine, and the entrance of these water-cooled barrel slag coolers is connected with the slag-drip opening of described boiler, and outlet connects the entrance of described negative pressure wind cold type steel band machine;
The periphery of negative pressure wind cold type steel band machine is arranged with the housing of a sealing, described housing is provided with a cooling air import, outlet, wherein the cooling air import connects a blower fan, and cooling air outlet is connected with the burner hearth of boiler, and the air intake direction is opposite with the transporting direction of this negative pressure wind cold type steel band machine;
Described deslagging unit comprises a slag storehouse and is located at residual cake valve on this slag storehouse;
Described control module is a PLC control system.
2. a kind of circulating cooling system for bottom dregs at fluid bed boiler as claimed in claim 1, is characterized in that, described water-cooled barrel slag cooler is arranged under the slag-drip opening of boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202434006U CN203286557U (en) | 2013-05-07 | 2013-05-07 | Cooling system for bottom slag of fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202434006U CN203286557U (en) | 2013-05-07 | 2013-05-07 | Cooling system for bottom slag of fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286557U true CN203286557U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202434006U Expired - Fee Related CN203286557U (en) | 2013-05-07 | 2013-05-07 | Cooling system for bottom slag of fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286557U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114947A (en) * | 2015-09-18 | 2015-12-02 | 青岛达能环保设备股份有限公司 | Stepped cooling slag discharging method for bottom slags of circulating fluidized bed boiler |
| CN105180163A (en) * | 2015-09-18 | 2015-12-23 | 青岛达能环保设备股份有限公司 | Classified cooling and slag discharging system for circulating fluidized bed boiler |
-
2013
- 2013-05-07 CN CN2013202434006U patent/CN203286557U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114947A (en) * | 2015-09-18 | 2015-12-02 | 青岛达能环保设备股份有限公司 | Stepped cooling slag discharging method for bottom slags of circulating fluidized bed boiler |
| CN105180163A (en) * | 2015-09-18 | 2015-12-23 | 青岛达能环保设备股份有限公司 | Classified cooling and slag discharging system for circulating fluidized bed boiler |
| CN105180163B (en) * | 2015-09-18 | 2017-11-17 | 青岛达能环保设备股份有限公司 | CFBB classification cooling dreg removing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20190507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |