CN201007476Y - Dual-strong breeze ignition and steady firing device - Google Patents
Dual-strong breeze ignition and steady firing device Download PDFInfo
- Publication number
- CN201007476Y CN201007476Y CNU2007200344207U CN200720034420U CN201007476Y CN 201007476 Y CN201007476 Y CN 201007476Y CN U2007200344207 U CNU2007200344207 U CN U2007200344207U CN 200720034420 U CN200720034420 U CN 200720034420U CN 201007476 Y CN201007476 Y CN 201007476Y
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- oil
- burner
- fire
- air film
- coal powder
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Abstract
The utility model discloses a double-better coal powder igniting and stably burning device, comprising an air film wind box 1, an air film wind window 2, and an oil burner 3, wherein, the oil burner is composed of two oil burners which are arranged in opposing direction. The oil burner employs the aviation jetting theory, which has the functions of the igniting burner and stably burning burner, the jet tip portion of the air film wind box 1 is provided with a biased section 4, the air film wind window 2 employs the air film of the venetian blind type, which ensure the stable and complete combustion of the coil and the service life of the burner.
Description
Technical field
The utility model relates to the coal-burning boiler technical field, in particular to be a kind of coal burner.
Background technology
The igniting of coal burning boiler of power station and steady combustion all can consume great amount of fuel oil every year.In recent years, along with rising steadily of crude oil price, the power station fuel oil more and more is restricted, and coal-burning boiler igniting and stable combustion oil also are used as an important performance assessment criteria.Adopt the technology of " replace oil with coal " and product by electricity power enterprise as reducing cost of electricity-generating, the important channel of improving the business economic benefit.
In recent years, along with development of science and technology, constantly there are new fuel-saving technique, product to occur, but some problems of all existence more or less, mainly contain system complex, shortcomings such as service life is short, cost is high, coal adaptability is poor, maintenance is big, system self energy consumption height.
The utility model content
The purpose of this utility model is to provide a kind of brand-new fuel-saving technique and product to solve above all problems up hill and dale at the weak point of above-mentioned prior art existence.It has adopted particular structure, can directly light various coals such as anthracite, meager coal, bituminous coal under the condition of black furnace, cold wind, cold powder, is the preferred unit of coal fired power plant saving igniting and stable combustion oil.
The technical scheme that the utility model adopted is:
A kind of pair of strong coal powder lighted a fire and smooth combustion apparatus, and it comprises: air film bellows 1, air film air regulator 2 and oil burner 3, wherein, described oil burner is two oil burners that liquidate and arrange.
Above-mentioned two strong coal powder igniting and smooth combustion apparatus, it is further characterized in that described air film bellows 1 spout place also is provided with bias area 4; Described air film air regulator 2 is to adopt the venetian blind type structural design; Also be provided with wall temperature monitoring thermocouple on the described oil burner 3.
Above-mentioned two strong coal powder igniting and smooth combustion apparatus, it further is characterised in that, described oil burner 3 is made up of burning torch 31, oil gun 32, oil fire inspection 33, installing plate 34, three-way pipe 35, conduit tube component 36, aid distributing pipe 37, oil firing tube 38, described burning torch 31, oil gun 32, oil fire inspection 33 are installed on the installing plate 34, and described three-way pipe 35 links to each other with aid distributing pipe 37.
The utility model compared with prior art adopts two strong coal powder start-up burners to have following several big advantage:
1) transform simply, directly adopt two strong coal powder start-up burners to replace former burner, this burner has start-up burner to have main burner functions concurrently, and the inner flow area of burner and a wind interface are pressed the life size design, and one time airduct need not any change.
2) the coal adaptation is wide, and after-flame degree height adapts to domestic coal fired power plant substantially and uses coal.
3) comprehensive rate of economizing gasoline is more than 80%.More considerable for newly-built unit economic benefit.
4) do not influence former low-load performance.
5) coal burner has adopted the air film cooling technology, guarantees not slagging scorification, does not ablate, and has reduced wearing and tearing simultaneously, has prolonged the service life of burner greatly.
6) system is simple, and self energy consumption is little.
7) equipment is reliable, and maintenance is extremely low, can realize non-maintaining basically.
Description of drawings
Fig. 1 is the structural principle schematic diagram of the utility model embodiment 1;
Fig. 2 is that the air film wind of the utility model embodiment 1 connects intention;
Fig. 3 is the oil burner structural representation of the utility model embodiment 1;
Fig. 4 is the structural principle schematic diagram of the utility model embodiment 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
In order to summarize the purpose of this utility model, some aspect of the present utility model, advantage and novel feature have been described here.Should be appreciated that, need not all these aspects, advantage and feature and be included among arbitrary special embodiment.
Two strong coal powder igniting of the invention and smooth combustion apparatus liquidate on coal burner and arrange two oil burners, the burner internal layer adopts the monoblock cast of fire resistant special type steel alloy, have annular air film air regulator mouth on the burner inner wall, the burner skin is the air film bellows.
Two oil burners that the utilization of this device liquidates and arranges, the thermal-flame that oil burner sent of process overheavy firing when igniting, to be heated to the ignition temperature that uses coal by the primary wind and powder air-flow of coal burner, oil pinkeye central temperature is up to 1800 ℃, the primary wind and powder mixture is subjected to the impact of thermal-flame, separating out fugitive constituent rapidly takes fire simultaneously, after fugitive constituent is separated out, pulverized coal particle becomes cellular, strengthened the reaction table area, thereby the igniting requirement of combustion technology in the coal dust has been satisfied in accelerated combustion, has realized that different coals are at black furnace, cold wind, direct-fire and burning under the cold vermicelli spare.
Embodiment 1:
The two strong coal powder igniting and the smooth combustion apparatus of present embodiment are applicable to the higher coals of fugitive constituent such as bituminous coal, and this burner has start-up burner to have main burner functions concurrently.As shown in Figure 1.
A kind of pair of strong coal powder lighted a fire and smooth combustion apparatus, and it comprises: air film bellows 1, air film air regulator 2 and oil burner 3, described oil burner are two oil burners that liquidate and arrange.Oil burner adopts the aviation ejector principle, and primary wind and powder is by oily flame 5 igniting, through the final powder flame 6 that forms of the steady combustion in combustion chamber.
Two strong coal powder igniting and smooth combustion apparatus skin are air film bellows 1; the preceding heat primary air of coal pulverizer is as air film wind after adopting preheater; all parameters of this hot blast all satisfy air film wind needs; not only can play a protective role to burner; and the influence when having reduced boiler combustion as much as possible, do not need to add in addition simultaneously ventilation apparatus.Air film air regulator 2 roads adopt unique venetian blind type structural design; offer air film air regulator mouth according to the distribution in temperature field on can be at an arbitrary position; this structural design can guarantee that not only air film wind is adherent all the time; and in the combustion chamber, formed an air film protective layer complete, that flow; reduced coal dust greatly to the washing away of burner inner wall, guaranteed not slagging scorification of combustion chamber, do not ablate.Burner is provided with three wall temperature monitoring thermocouples, and signal send DCS, can be according to adjustment air film air quantity when putting into operation.On apart from each angle heat primary air house steward the most nearby, respectively draw an airduct, link to each other with four jiaos of two strong coal powder burner air film wind interfaces 7 respectively and get final product, air film airduct trend must satisfy the pipe arrangement requirement, reduce unnecessary elbow as much as possible, reduce the pressure loss of air film wind, guarantee the flow of air film wind.Airduct is provided with motorized adjustment valve regulation air film air quantity.As shown in Figure 2.
The oil air distribution needs the more stable wind regime of pressure, when guaranteeing blast and air quantity, reduce fluctuation as far as possible, higher and pressure stability of blast of unit pulverized-coal system can be used as oily air distribution wind regime fully, and the ball type pulverizer system then need be furnished with independently blower fan air feed; Every oil burner is furnished with independent flame detecting device, and fire inspection processor is loaded in the on-site control, and the treated device of flare up fire has been sent fiery switching value signal, and signal directly send DCS, and flame detecting device need not cooling air and purges; Adopt on-site control to control fuel tap, oily air distribution door, the switch of air film air door and the startup of igniter respectively, be provided with a distant place/control mode switching knob and indication on the spot in the cabinet, on-site control is reserved the DCS interface and is accepted host computer (DCS) instruction, a realization distant place is controlled automatically, on-site control is reserved the DCS interface, be connected the hardwire mode that adopts with DCS, fire inspection processor is loaded in the on-site control.
Present embodiment basic mechanical design feature and characteristics:
1) formula of liquidating of oil burner is furnished with the mutual support that is beneficial to oily flame, for coal dust firing provides advantageous conditions, has strengthened the exchange process of caloic, for firing coal-dust has been created the condition of doing well the coming year.
2) adopted the air film cooling technology, guaranteed not slagging scorification of coal burner, do not ablate.
3) to the pulverized-coal concentration no requirement (NR), pulverized-coal concentration is regulated according to the boiler heating needs that boost fully.
4) the oil burner capacity satisfies the needs of the various coals in power station of igniting substantially between 30kg/h～300kg/h.
5) You burn-off rate is up to more than 98%.
6) system self energy consumption is little.
7) in high-temperature region work, fixed-site is not constant, does not need to establish propulsion plant for oil gun and burning torch.
8) coal adaptability is wide, is applicable to brown coal, bituminous coal, meager coal and anthracite.
9) primary air velocity: 18～25m/s satisfies meager coal and anthracite powder feeding requirement; 25～32m/s satisfies brown coal and bituminous coal powder feeding requirement.
Embodiment 2:
Substantially the same manner as Example 1.The two strong coal powder igniting and the smooth combustion apparatus of present embodiment are applicable to the lower coals of fugitive constituent such as meager coal, and this burner has the function of start-up burner and steady burning burner.This burner is a upper offset jet combustion device, and it is to utilize asymmetric jet current principle to form one in the combustion chamber to help the aerodynamic field that pulverized coal particle is lighted and burnt.Offset jet premix burner according to this principle development can not only be stablized overheavy firing bituminous coal, and the fugitive constituent that can burn is 10%, ash is 30% coal dust inferior, when one time general mood stream passes through spout, form negative pressure at bias area 4, thereby entrainment the burner hearth high-temperature flue gas, reach the purpose of smooth combustion.As shown in Figure 4.
Though the present invention with preferred embodiment openly as above; but they are not to be used for limiting the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the invention; from when can doing various variations or retouching, so being as the criterion of should being defined with the application's claim protection domain of protection scope of the present invention.
Claims (7)
1. two strong coal powder are lighted a fire and smooth combustion apparatus, and it comprises: air film bellows (1), air film air regulator (2), oil burner (3) is characterized in that: described oil burner is two oil burners that liquidate and arrange.
2. according to claim 1 pair of strong coal powder lighted a fire and smooth combustion apparatus, it is characterized in that: described air film air regulator (2) is to adopt the venetian blind type structural design.
3. according to claim 1 pair of strong coal powder lighted a fire and smooth combustion apparatus, it is characterized in that: described oil burner (3) is made up of burning torch (31), oil gun (32), the inspection of oil fire (33), installing plate (34), three-way pipe (35), conduit tube component (36), aid distributing pipe (37), oil firing tube (38), described burning torch (31), oil gun (32), oil fire inspection (33) are installed on the installing plate (34), and described three-way pipe (35) links to each other with aid distributing pipe (37).
4. according to claim 2 pair of strong coal powder lighted a fire and smooth combustion apparatus, it is characterized in that: described oil burner (3) is made up of burning torch (31), oil gun (32), the inspection of oil fire (33), installing plate (34), three-way pipe (35), conduit tube component (36), aid distributing pipe (37), oil firing tube (38), described burning torch (31), oil gun (32), oil fire inspection (33) are installed on the installing plate (34), and described three-way pipe (35) links to each other with aid distributing pipe (37).
5. according to described pair of strong coal powder igniting of one of claim 1 to 4 and smooth combustion apparatus, it is characterized in that: described air film bellows (1) spout place also is provided with bias area (4).
6. according to described pair of strong coal powder igniting of one of claim 1 to 4 and smooth combustion apparatus, it is characterized in that: also be provided with wall temperature monitoring thermocouple on the described oil burner (3).
7. according to claim 5 pair of strong coal powder lighted a fire and smooth combustion apparatus, it is characterized in that: also be provided with wall temperature monitoring thermocouple on the described oil burner (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200344207U CN201007476Y (en) | 2007-02-12 | 2007-02-12 | Dual-strong breeze ignition and steady firing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200344207U CN201007476Y (en) | 2007-02-12 | 2007-02-12 | Dual-strong breeze ignition and steady firing device |
Publications (1)
| Publication Number | Publication Date |
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| CN201007476Y true CN201007476Y (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200344207U Expired - Fee Related CN201007476Y (en) | 2007-02-12 | 2007-02-12 | Dual-strong breeze ignition and steady firing device |
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| CN (1) | CN201007476Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143725A1 (en) * | 2008-05-29 | 2009-12-03 | 徐州燃烧控制研究院有限公司 | An internal-burning type firing pulverized coal burner |
| CN101672474B (en) * | 2009-06-09 | 2012-01-25 | 徐州燃控科技股份有限公司 | Horizontal bias internal-combustion igniter and main pulverized coal burner |
| CN103807844A (en) * | 2014-01-24 | 2014-05-21 | 华东理工大学 | Method for cooling metal wall in contact with high-temperature gas |
-
2007
- 2007-02-12 CN CNU2007200344207U patent/CN201007476Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143725A1 (en) * | 2008-05-29 | 2009-12-03 | 徐州燃烧控制研究院有限公司 | An internal-burning type firing pulverized coal burner |
| CN101672474B (en) * | 2009-06-09 | 2012-01-25 | 徐州燃控科技股份有限公司 | Horizontal bias internal-combustion igniter and main pulverized coal burner |
| CN103807844A (en) * | 2014-01-24 | 2014-05-21 | 华东理工大学 | Method for cooling metal wall in contact with high-temperature gas |
| CN103807844B (en) * | 2014-01-24 | 2016-01-20 | 华东理工大学 | A kind of metallic walls cooling means contacted with high-temperature gas |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20140212 |