CN201568979U - On-line dust blowing device of CWS (coal water slurry) boiler - Google Patents
On-line dust blowing device of CWS (coal water slurry) boiler Download PDFInfo
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- CN201568979U CN201568979U CN2009200657997U CN200920065799U CN201568979U CN 201568979 U CN201568979 U CN 201568979U CN 2009200657997 U CN2009200657997 U CN 2009200657997U CN 200920065799 U CN200920065799 U CN 200920065799U CN 201568979 U CN201568979 U CN 201568979U
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- dust blowing
- water slurry
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Abstract
The utility model provides an on-line dust blowing device of a CWS (coal water slurry) boiler. A main dust blowing pipe is arranged at the bottom part of the convection heating surface of the CWS boiler along the smoke circulating direction, a plurality of branch pipes are arranged on the main pipe, nozzles are arranged at air outlets of the branch pipes, and the main dust blowing pipe and the branch pipes are arranged in a heat preservation layer. The outlet directions of the nozzles are consistent with the smoke flowing direction and are inclined upwards at certain angle. High-pressure steam or compressed air not only sequentially carries out blowing at the inner part of the heating surface of the boiler in a segmented manner, but also forces large and coarse particles deposited in a smoke channel on the heating surface of the boiler to be raised due to impact of heavy air flow and to collide with the metal wall of the heating surface, so as to lead dust adhered on the metal wall to fall off under the action of an external force and to be discharged together with smoke, thereby achieving the dust blowing effect. The on-line dust blowing device has the characteristics of simple equipment, low running cost, high efficiency and low labor intensity.
Description
Technical field
The utility model relates to a kind of boiler structure of boiler combustion, deashing device in the boiler heating surface when referring in particular to a kind of boiler combustion of metabolic water coal slurry.Deashing device can be so that water-coal-slurry obtains smooth combustion for a long time continuously in boiler in the boiler heating surface during this kind boiler combustion.
Background technology
Water-coal-slurry is a kind of coal, water, additive mixing, by the coal-based liquid fuel of physics deep processing, has the feature of environmental protection of low ash, low-sulfur, is a kind of environment protection clean fuel.The development of water-coal-slurry is the energy project of state key development always, and country successively puts into effect multinomial associated policy and file.Therefore water-coal-slurry and combusting coal water slurry boiler have very wide prospect in China.But water-coal-slurry contains a certain amount of ash as a kind of coal derived fuel, burning back enters the ash of boiler heating surface and last after-flame with flue gas carbon granule than coal-fired, the fuel vapor boiler is much more.These ashes and carbon granule are flowed through behind the boiler heating surface with flue gas, part discharge boiler, and some sticks on the boiler heating surface metallic walls or is deposited in the exhaust gases passes.Stay the ash of boiler internal and the thermal efficiency that carbon granule has reduced boiler, blocked exhaust gases passes, increased the load of air-introduced machine, the ash removal method in the boiler heating surface has at present: mechanical vibrator method, sonic soot cleaning and steam soot blowing.The mechanical vibrator method is mainly used on the suspension type waste heat boiler; Existing sonic soot cleaning and steam soot blowing then emphasis are that the dust stratification that adheres on the tube wall is purged, and then can only handle by putting ash or blowing out the dust stratification that is deposited on the bottom.Put ash and can not effectively remove dust stratification, it is big and influence the normal operation and the daily production of boiler that hand labor intensity is then cleared up in blowing out.
In the research of coming in to have some about the ash removal method in the boiler heating surface, as Ou Zongxian; Yan Weiping; " coal-fired power station boiler blow grey strategy study " ([J] thermal power engineering that Zhu Yudong etc. deliver, 2009 03 phases), proposition is realizing that boiler heating surface pollutes on-line monitoring and entropy produces on the basis of on-line analysis, the stable operation of collateral security boiler safety is set out with the angle that grey maximum revenue is blown in realization, has proposed formulation and has blown the basic principle that the ash strategy will be followed.Actual motion characteristic according to these basic principles and boiler unit, formulated to optimize and blown the ash strategy, and set up 3 kinds and be suitable for the grey pattern of blowing of different heating surfaces and grey strategy is blown in optimization be used for the coal-fired power station boiler computer monitoring system, changed original timing and blown grey mode, realized that ash is blown in the optimization of each main heating surface of boiler.Regrettably the ash that blows of dry coal powder boiler has just been considered in this research, does not consider the problem of coal water slurry boiler deashing.
Chinese patent (publication number: CN101344256, name is called: combined distribution type high-efficiency intelligent gas shock wave ash-blowing system) also disclose a kind of combined distribution type high-efficiency intelligent gas shock wave ash-blowing system, comprise the central primary control cabinet, on the spot from the control cabinet, also comprise air supply processing equipment, premix is ignited cabinet, shock wave generator and special-purpose shock wave nozzle thereof on the spot.This technology mainly is applicable to various waste heat boilers and station boiler, the high efficiency smart of especially medium-and-large-sized each heating surface of unit station boiler blows ash, compare with soot blower system with scale, the 60%-70% of the just existing gas shock wave soot-blowing system production cost of its production cost, the on-the-spot cable consumption of installing is existing below 60% of gas shock wave soot-blowing system.But still be to be not suitable for coal water slurry boiler to use.
Chinese patent (publication number: CN200958764, name is called: boiler sootblower) disclose a kind of boiler sootblower that boiler heating surface blows ash that is used for again, comprise air inlet, pressure-control valve, seal bar, the master cylinder cavity, big cylinder sleeve, exhaust steam valve, middle cylinder sleeve, the piston group, little cylinder sleeve, discharge accent, back-moving spring, the cavity steam vent, tank body, tank body one end is provided with air inlet, its other end is provided with the release accent, pressure-control valve, the main air valve cavity places in the tank body, establish big cylinder sleeve in the main air valve cavity, back-moving spring, seal bar, main air valve cavity one end is installed the piston group, its other end end cap opening cooperates the formation sealing by seal bar with this opening.But this patent also only relates to how to use the application of common fire coal.
By to of the retrieval of present disclosed patent, do not find to relate to the online ash-blowing method and the device of coal water slurry boiler as yet with the research document.
The utility model content
The technical problem of the required solution of the utility model is: the boiler internal dust stratification is difficult for being cleared up when normally moving at existing coal water slurry boiler, need regular blowing out cleaning, the deficiency that labor strength is big, propose a kind ofly when coal water slurry boiler normally moves, can remove the boiler internal dust stratification effectively, and do not need the online soot blower of coal water slurry boiler of blowing out during cleaning.
The utility model provides implementer's case to be: the online soot blower of a kind of coal water slurry boiler, arrange that along the flue gas circulating direction one blows the female pipe of ash in coal water slurry boiler convection heating surface bottom, and female pipe is provided with some arms, and nozzle is installed in the arm gas outlet.Blow the female pipe of ash and place in the heat-insulation layer with arm, the jet expansion direction is consistent with flue gas flow direction also by certain angle obliquely.Blow grey female Guan Zaiyu sub-cylinder or compressed air bag and link to each other, blow the execution of ash action and control by controller.In the boiler running process, controller control electromagnetic impulse valve is by predetermined blowing time and sequentially-operating, and high steam or compressed air is through blowing grey female pipe by blowing grey nozzle ejection, to boiler heating surface inside in order segmentation purge in order.And whole to blow grey process be that segmentation is carried out, and the flue gas that flows through each boiler heating surface exhaust gases passes bigger change can not take place, and whole system is normally moved, and does not produce fluctuation.And tested practical effect, blowing ash thoroughly, totally, labour intensity is low, blows grey process and does not influence boiler operatiopn.
The characteristics of the online soot blower of the utility model coal water slurry boiler are:
1, rational in infrastructure simple, soot blower one-time investment cost is little, and operating cost is little, and security of operation is stable, and is durable in use;
2, ash-removal effect is good, can keep the unimpeded of the heating surface metallic walls cleaning of boiler and exhaust gases passes;
3, can when boiler normally moves, blow ash, and whole system does not produce fluctuation;
4, whole process is carried out automatically, need not manually-operated, and labor strength is little.
Description of drawings
Fig. 1 is the utility model structural representation.
1. controllers among the figure, 2. gas bag, 3. holding wire, 4. electromagnetic impulse valve 5. blows the female pipe of ash, 6. nozzle.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the utility model online soot blower of a kind of coal water slurry boiler of doing arranges that along the flue gas circulating direction one blows the female pipe 5 of ash in coal water slurry boiler convection heating surface bottom, and female pipe is provided with some arms, and the arm gas outlet is equipped with nozzle 6.Blow the female pipe 5 of ash and place in the heat-insulation layer with arm, nozzle 6 Way outs are consistent with flue gas flow direction also by certain angle obliquely.Blow the female pipe 5 of ash and link to each other with sub-cylinder or compressed air bag 2, the execution of blowing the ash action is by controller 1 control.In the boiler running process, controller 1 control electromagnetic impulse valve 4 is by predetermined blowing time and sequentially-operating, and high steam or compressed air is through blowing grey female pipe by blowing grey nozzle 6 ejections, to boiler heating surface inside in order segmentation purge.And whole to blow grey process be that segmentation is carried out, and the flue gas that flows through each boiler heating surface exhaust gases passes bigger change can not take place, and whole system is normally moved, and does not produce fluctuation.And tested practical effect, blowing ash thoroughly, totally, labour intensity is low, blows grey process and does not influence boiler operatiopn.
The method of operation of the online soot blower of the utility model coal water slurry boiler is: the compressed air or the Boiler Steam that are produced by air compressor machine are transported in the gas bag 2 of soot blower system by pipeline.In the middle of the normal operation of boiler; controller 1 in the soot blower system sends one by one by holding wire 3 according to preset program and carries out signal to each electromagnetic impulse valve 4; this moment, electromagnetic impulse valve 4 was opened; compressed air or steam enter the grey female pipe 5 that blows that is arranged in the boiler heating surface through electromagnetic impulse valve 4 and pipeline; again by nozzle 6 ejection at a high speed; the bulky grain ash that is deposited in the boiler convection heating surface exhaust gases passes is kicked up; and bump, thereby the dust that adheres to water wall is come off and discharge boiler with flue gas with metal outer wall.
Claims (2)
1. the online soot blower of coal water slurry boiler is characterized in that: arrange that along the flue gas circulating direction one blows the female pipe of ash in coal water slurry boiler convection heating surface bottom, female pipe is provided with some arms, and the arm gas outlet is equipped with nozzle; Blow the female pipe of ash and place in the heat-insulation layer with arm, the jet expansion direction is consistent with flue gas flow direction also by certain angle obliquely.
2. the online soot blower of coal water slurry boiler as claimed in claim 1 is characterized in that: blow grey female pipe and link to each other with sub-cylinder or compressed air bag, blow the execution of ash action and controlled by controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200657997U CN201568979U (en) | 2009-09-04 | 2009-09-04 | On-line dust blowing device of CWS (coal water slurry) boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200657997U CN201568979U (en) | 2009-09-04 | 2009-09-04 | On-line dust blowing device of CWS (coal water slurry) boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568979U true CN201568979U (en) | 2010-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200657997U Expired - Fee Related CN201568979U (en) | 2009-09-04 | 2009-09-04 | On-line dust blowing device of CWS (coal water slurry) boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568979U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432904A (en) * | 2013-09-11 | 2013-12-11 | 湖南麓南脱硫脱硝科技有限公司 | Dust blowing device for selective catalytic reduction (SCR) denitration reactor |
| CN110888403A (en) * | 2019-10-14 | 2020-03-17 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Intelligent soot blowing closed-loop control system based on minimum loss boiler convection heating surface |
| CN114576643A (en) * | 2022-02-28 | 2022-06-03 | 北京热力众达换热设备有限公司 | Flue gas preheater with smoke dust purging device |
-
2009
- 2009-09-04 CN CN2009200657997U patent/CN201568979U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432904A (en) * | 2013-09-11 | 2013-12-11 | 湖南麓南脱硫脱硝科技有限公司 | Dust blowing device for selective catalytic reduction (SCR) denitration reactor |
| CN110888403A (en) * | 2019-10-14 | 2020-03-17 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Intelligent soot blowing closed-loop control system based on minimum loss boiler convection heating surface |
| CN114576643A (en) * | 2022-02-28 | 2022-06-03 | 北京热力众达换热设备有限公司 | Flue gas preheater with smoke dust purging device |
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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: 20100901 Termination date: 20160904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |