CN101737790A - On-line soot blowing method and on-line soot blowing device for coal water slurry boiler - Google Patents
On-line soot blowing method and on-line soot blowing device for coal water slurry boiler Download PDFInfo
- Publication number
- CN101737790A CN101737790A CN200910044267A CN200910044267A CN101737790A CN 101737790 A CN101737790 A CN 101737790A CN 200910044267 A CN200910044267 A CN 200910044267A CN 200910044267 A CN200910044267 A CN 200910044267A CN 101737790 A CN101737790 A CN 101737790A
- Authority
- CN
- China
- Prior art keywords
- boiler
- heating surface
- water slurry
- grey
- coal water
- 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.)
- Pending
Links
Landscapes
- Incineration Of Waste (AREA)
Abstract
The invention discloses an on-line soot blowing method and an on-line soot blowing device for a coal water slurry boiler. The bottom of a convection heating surface of the coal water slurry boiler is provided with a soot blowing device along the smoke circulating direction, the soot blowing device is provided with over two nozzles with oblique upward outlets along the smoke circulating direction, the soot blowing device can eject high-pressure steam or compressed air through the nozzles along the smoke circulating direction in turn, the high-pressure steam or the compressed air blows the inside of the heating surface of the boiler section by section in order and compels large granules deposited in a smoke passage of the heating surface of the boiler to elevate again due to the impact of strong airflow, and meanwhile the granules collide with the metal wall of the heating surface so that the dust adhered to the metal wall drops due to the action of an external force and is discharged along with the smoke together to achieve the soot blowing effect. The method and the device have the advantages of simple required equipment, low operating expense, high efficiency and low manpower intensity.
Description
Technical field
The present invention relates to a kind of method and boiler structure of boiler combustion, ash removal method and device thereof in the boiler heating surface when referring in particular to a kind of boiler combustion of metabolic water coal slurry.Interior ash removal method of boiler heating surface and device thereof can be so that water-coal-slurry obtain smooth combustion for a long time continuously in boiler 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, and the burning back enters the ash of boiler heating surface with flue gas and unburnt carbon granule ratio is 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.
Recently some researchs about the ash removal method in the boiler heating surface are arranged, 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.
Summary of the invention
The technical problem of solution required for the present invention 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 ash-blowing method of coal water slurry boiler and the device of blowing out during cleaning.
For this reason, the online ash-blowing method of a kind of coal water slurry boiler provided by the present invention is: arrange a soot blower in coal water slurry boiler convection heating surface bottom along the flue gas circulating direction, soot blower is furnished with oblique nozzle to upper outlet more than two along the flue gas circulating direction, soot blower can spray high steam or compressed air along the flue gas circulating direction in order by nozzle, by high steam or compressed air to boiler heating surface inside in order segmentation purge, and force the big coarse granule that is deposited on the boiler heating surface exhaust gases passes to be kicked up once more because of the impact that is subjected to air blast, bump with the heating surface metallic walls simultaneously, the feasible dust that sticks on the metallic walls comes off because of the external force effect and discharges with flue gas, reaches and blows grey effect.
Described soot blower can be to 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 coal water slurry boiler of the present invention 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
The present invention is further described below in conjunction with drawings and Examples.
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
As shown in Figure 1, the present invention's online ash-blowing method of a kind of coal water slurry boiler of doing, described method is to arrange a soot blower in coal water slurry boiler convection heating surface bottom along the flue gas circulating direction, soot blower is furnished with oblique nozzle to upper outlet more than two along the flue gas circulating direction, soot blower can spray high steam or compressed air along the flue gas circulating direction in order by nozzle, by high steam or compressed air to boiler heating surface inside in order segmentation purge, and force the big coarse granule that is deposited on the boiler heating surface exhaust gases passes to be kicked up once more because of the impact that is subjected to air blast, bump with the heating surface metallic walls simultaneously, the feasible dust that sticks on the metallic walls comes off because of the external force effect and discharges with flue gas, reaches and blows grey effect.
Described soot blower can be to arrange 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 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 method of operation of the online soot blower of coal water slurry boiler of the present invention 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 (7)
1. online ash-blowing method of coal water slurry boiler and device, it is characterized in that: arrange a soot blower along the flue gas circulating direction in coal water slurry boiler convection heating surface bottom, soot blower is furnished with oblique nozzle to upper outlet more than two along the flue gas circulating direction, soot blower can spray high steam or compressed air along the flue gas circulating direction in order by nozzle, by high steam or compressed air to boiler heating surface inside in order segmentation purge, and force the big coarse granule that is deposited on the boiler heating surface exhaust gases passes to be kicked up once more because of the impact that is subjected to air blast, bump with the heating surface metallic walls simultaneously, the feasible dust that sticks on the metallic walls comes off because of the external force effect and discharges with flue gas, reaches and blows grey effect.
2. the online ash-blowing method 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; 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.
3. the online ash-blowing method of coal water slurry boiler as claimed in claim 1 is characterized in that: whole to blow grey process be that segmentation is carried out.
4. a coal water slurry boiler is online blows grey soot blower, and it 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.
5. coal water slurry boiler as claimed in claim 4 is online to blow grey soot blower, it 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.
6. coal water slurry boiler as claimed in claim 4 is online to blow grey soot blower, it is characterized in that: in the boiler running process, controller control electromagnetic impulse valve is by predetermined blowing time and sequentially-operating, high steam or compressed air is through blowing grey female pipe by blowing the ejection of grey nozzle, to boiler heating surface inside in order segmentation purge.
7. coal water slurry boiler as claimed in claim 4 is online to blow grey soot blower, it is characterized in that: whole to blow grey process be that segmentation is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910044267A CN101737790A (en) | 2009-09-04 | 2009-09-04 | On-line soot blowing method and on-line soot blowing device for coal water slurry boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910044267A CN101737790A (en) | 2009-09-04 | 2009-09-04 | On-line soot blowing method and on-line soot blowing device for coal water slurry boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101737790A true CN101737790A (en) | 2010-06-16 |
Family
ID=42461626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910044267A Pending CN101737790A (en) | 2009-09-04 | 2009-09-04 | On-line soot blowing method and on-line soot blowing device for coal water slurry boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737790A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839490A (en) * | 2010-07-01 | 2010-09-22 | 成都四通科技投资有限公司 | Ash removing equipment and method of float glass exhaust-heat boiler |
| CN102692023A (en) * | 2011-03-23 | 2012-09-26 | 北京市旭广厦暖通节能设备有限责任公司 | Efficient and energy-saving boiler ash removal method |
| CN102701609A (en) * | 2012-06-11 | 2012-10-03 | 石家庄市新华工业炉有限公司 | Pulse blowing mechanism for combustion beam |
| CN104804751A (en) * | 2014-01-27 | 2015-07-29 | 神华集团有限责任公司 | Soot blowing device for rotary tray, and heat reactor thereof |
| CN107238304A (en) * | 2017-06-20 | 2017-10-10 | 东北大学 | A kind of dust-laden hot exhaust gas heat recovering heat exchanger with Hand scarf function |
| CN107499973A (en) * | 2017-08-03 | 2017-12-22 | 山西潞安煤基合成油有限公司 | Boiler Ash storehouse steam dust removing device |
| CN108380603A (en) * | 2018-01-11 | 2018-08-10 | 中钢集团工程设计研究院有限公司 | A kind of device for removing dust stratification online to dust and gas pipeline |
| CN109316700A (en) * | 2018-11-07 | 2019-02-12 | 王永刚 | Simulation is with a loud crash, strile-back generating device |
| CN110173706A (en) * | 2019-06-17 | 2019-08-27 | 中国华电科工集团有限公司 | Deashing device and operation method for coal steam-electric plant smoke afterheat utilizing system |
| 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 |
-
2009
- 2009-09-04 CN CN200910044267A patent/CN101737790A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839490A (en) * | 2010-07-01 | 2010-09-22 | 成都四通科技投资有限公司 | Ash removing equipment and method of float glass exhaust-heat boiler |
| CN101839490B (en) * | 2010-07-01 | 2012-02-08 | 成都四通新能源技术有限公司 | Ash removing equipment and method of float glass exhaust-heat boiler |
| CN102692023A (en) * | 2011-03-23 | 2012-09-26 | 北京市旭广厦暖通节能设备有限责任公司 | Efficient and energy-saving boiler ash removal method |
| CN102701609A (en) * | 2012-06-11 | 2012-10-03 | 石家庄市新华工业炉有限公司 | Pulse blowing mechanism for combustion beam |
| CN104804751A (en) * | 2014-01-27 | 2015-07-29 | 神华集团有限责任公司 | Soot blowing device for rotary tray, and heat reactor thereof |
| CN104804751B (en) * | 2014-01-27 | 2017-04-26 | 神华集团有限责任公司 | Soot blowing device for rotary tray, and heat reactor thereof |
| CN107238304A (en) * | 2017-06-20 | 2017-10-10 | 东北大学 | A kind of dust-laden hot exhaust gas heat recovering heat exchanger with Hand scarf function |
| CN107499973A (en) * | 2017-08-03 | 2017-12-22 | 山西潞安煤基合成油有限公司 | Boiler Ash storehouse steam dust removing device |
| CN108380603A (en) * | 2018-01-11 | 2018-08-10 | 中钢集团工程设计研究院有限公司 | A kind of device for removing dust stratification online to dust and gas pipeline |
| CN109316700A (en) * | 2018-11-07 | 2019-02-12 | 王永刚 | Simulation is with a loud crash, strile-back generating device |
| CN110173706A (en) * | 2019-06-17 | 2019-08-27 | 中国华电科工集团有限公司 | Deashing device and operation method for coal steam-electric plant smoke afterheat utilizing system |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101737790A (en) | On-line soot blowing method and on-line soot blowing device for coal water slurry boiler | |
| CN201827898U (en) | Compressed air shock wave soot blower | |
| CN103432904A (en) | Dust blowing device for selective catalytic reduction (SCR) denitration reactor | |
| CN201568979U (en) | On-line dust blowing device of CWS (coal water slurry) boiler | |
| CN1982780A (en) | Ash injector fo gas pulsing weak-explosion wave | |
| CN203744275U (en) | Gas pulse soot blower | |
| CN201688416U (en) | Ash cleaning system for heated surface at the tail of garbage incinerator | |
| CN101900343B (en) | Boiler pulse soot-blowing method and device thereof | |
| CN208536019U (en) | The deashing device of novel low low-level (stack-gas) economizer | |
| CN203116043U (en) | Online shock ash removing device of crumple-type boiler | |
| CN103234210B (en) | Soot cleaning device | |
| CN205137879U (en) | Boiler | |
| CN201795514U (en) | Soot blowing device and boiler with same | |
| CN113483596A (en) | Dry ice cleaning method and dry ice cleaning machine for furnace tube | |
| CN212108357U (en) | Biomass boiler | |
| CN202938322U (en) | One-pot-multi-jet-spray type boiler steam pulsating dust-cleaning device | |
| CN201521974U (en) | Intelligent parallel weak-blasting soot blowing system and control device for preventing water logging and soot formation | |
| CN201715524U (en) | Hydrogen explosion powerful shock-wave soot blower of oxyhydrogen machine | |
| CN208186392U (en) | Rotary regenerative air heater sound wave ash cleaner | |
| CN204084411U (en) | A kind of Novel pulse amplifying device | |
| CN208049602U (en) | A kind of two-way blowing type high temperature compressed air back-blowing device | |
| CN207146368U (en) | The anti-wear shell type coal water slurry fired waste heat boiler of automatic ash removing | |
| CN207555624U (en) | A kind of soot blower system for π type boiler furnace arch, furnace noses | |
| CN203447985U (en) | Ash blowing device of SCR (Selective Catalytic Reduction) denitration reactor | |
| CN204593870U (en) | A kind of biomass boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Application publication date: 20100616 |