CN1323261C - Powder-combustible vortex burner - Google Patents

Powder-combustible vortex burner Download PDF

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Publication number
CN1323261C
CN1323261C CNB2005100797024A CN200510079702A CN1323261C CN 1323261 C CN1323261 C CN 1323261C CN B2005100797024 A CNB2005100797024 A CN B2005100797024A CN 200510079702 A CN200510079702 A CN 200510079702A CN 1323261 C CN1323261 C CN 1323261C
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Prior art keywords
cooling
cooling jacket
burner
channel
coal
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CNB2005100797024A
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CN1710333A (en
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王明坤
李兵科
刘孝弟
王军
郭进军
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Changzheng Engineering Co Ltd
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Beijing Aerospace Propulsion Institute
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Abstract

The present invention relates to a vortex burner for combustible powder which uses powdered coal as an instance. The center of the burner is provided with a primary cooling jacket, an ignition device is inserted in the center of the primary cooling jacket, and a flame monitoring device is arranged on an end cover; the primary cooling jacket, a secondary cooling jacket and a tertiary cooling jacket are radially and orderly arranged outwards in a coaxial mode, a primary air channel, a primary cooling channel, a secondary air channel, a secondary cooling channel, a tertiary powder channel and a tertiary cooling channel are orderly formed in spaces between the pipe walls of the adjacent jackets and spaces in the jackets; an inlet channel of fuel gas is connected in parallel to an entrance channel of gasifying agents and then connected to the primary air channel, and the fuel gas and the gasifying agents can be switched by a valve; a vortex device is additionally arranged at the outlet of the secondary air channel; the powdered coal is conveyed by 2 to 5 powdered coal pipes, and is spouted from the outlet of the powdered coal pipes in a vortex mode. The present invention has the advantages of shortened length of burner flames, saved furnace body volume, prolonged service life of the burner because of multi-layer cooling structures and realized higher combustion efficiency and gasification efficiency.

Description

A kind of powder-combustible vortex burner
Technical field
The present invention relates to a kind of burner, particularly a kind of what be used for gasification furnace and heating furnace is the turbulent burner of fuel with the combustible powder.
Background technology
In the existing Coal Gasification Technology, with the technology comparative maturity of Texaco and Shell, a lot of at home producers are applied, and both have their own characteristics each aspect burner design.Wherein the Texaco gasification furnace burner is fuel with the water-coal-slurry, and this burner is divided into three layers of passage, and the central passage medium is an oxygen, and second layer channel media is a water-coal-slurry, and the outermost layer channel media still is an oxygen.The burner of this structure is very ripe, but the deficiency of self is also arranged: (1) water-coal-slurry has very strong wearing and tearing to shower nozzle, therefore must often change wearing terrain (the wearing terrain life-span was generally 30～60 days); (2) water-coal-slurry and oxygen adopt straight flow structure to make combustion flame longer, and corresponding body of heater length also increases; (3) burner uses the coil pipe cooling structure, very easily causes damage when dismounting; (4) the burner sparking mode adopts preheat burner to refractory brick heating in the body of heater, and fire box temperature is switched after reaching the ignition temperature of water-coal-slurry, to water-coal-slurry igniting, sparking mode complex operation; (5) this structural requirement coal can be made into high concentration, high stability, the water-coal-slurry that rheological behavior is good, require coal to wear into the coal slurry that distributes by certain particle size, in order to improve the characteristic of water-coal-slurry, also to add certain quantity of additive, even so, still have the part coal to be not suitable for making water-coal-slurry, the scope of application is limited to.
Shell coal dust gasification equipment is the dry coal powder with fuel, adopt high pressure nitrogen to be conveyed into gasification furnace, the scope of application to coal is wide, granularity, cohesiveness, sulfur content, oxygen content and the ash content of coal to coal are insensitive, its structure is uniformly distributed along the circumference in the stove middle and lower part by the quadruplet burner, the quadruplet burner forms flames in opposing direction in stove, synthesis gas is from the discharging of gasification furnace upper end, and slag discharges from the lower end.The deficiency of Shell burner is: (1) though simple in structure, adopt straight flow structure, flame is longer, itself is not with igniter, needs add in addition the igniting device and light a fire in gasification furnace; (2) mixed process of Shell burner coal dust and oxygen mainly realizes that by the structure that liquidates of four in the stove do not add cyclone structure, single burner can't work independently, so the Shell burner scope of application is little, only is applicable to the liquidate body of heater of structure of flame.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcomes the deficiencies in the prior art, provides a kind of atomizing effect good, and long service life, compact conformation, flame is sturdy, efficiency of combustion height, the powder-combustible vortex burner that the scope of application is extensive.
Technical scheme of the present invention: powder-combustible vortex burner, its characteristics are: the burner center radially is cooling jacket, secondary cooling jacket and three cooling jackets outward successively, three layers of chuck concentric are arranged; One time igniter is inserted at the cooling jacket center, arranges flame monitor on the cooling jacket end cap; Space between space in the chuck and adjacent chuck tube wall and the tube wall forms fuel gas passage, cooling duct, oxidant channel, secondary cooling duct, combustible powder passage and three cooling ducts successively; Fuel gas carrier pipe and gasifying agent carrier pipe access in parallel fuel gas passage, the switching of two kinds of gas conveyings is controlled by valve, the oxidant channel exit installs swirl-flow devices additional, coal dust adopts 2～5 coal pipes to carry, coal pipe is uniformly distributed along the circumference in the combustible powder passage, be spirally wound on secondary cooling jacket outer wall, coal dust sprays at coal pipe exit eddy flow.
Principle of the present invention: fuel gas is lighted through fire rod, with fuel gas flame ignition coal dust, the fuel gas in the fuel gas passage is replaced as gasifying agent.Coal dust is divided into 2～5 coal pipes to be carried as carrier by assist gas, and coal pipe is uniformly distributed along the circumference in the combustible powder passage, and every Guan Jun is spirally wound on secondary cooling jacket outer wall, chooses suitable pitch and avoids the coal dust alluvial and form bigger flow resistance.It is in order to make coal dust have tangential velocity, to form eddy flow when guaranteeing the coal dust ejection that the coal pipe spiral twines.The oxidant swirl-flow devices is arranged in the oxidant channel exit, and oxidant sprays behind eddy flow, run into coal dust and gasifying agent after, the three mixes rapidly.It is in order to accelerate mixing velocity that powder and oxidant all adopt the cyclone mode ejection, and favourable to the tissue burning, the while combustion flame shortens chap.Flame is very strong to the radiation of burner, and therefore every layer of pipeline outer wall all is provided with cooling jacket protection, and the medium in the chuck can be water or other cooling mediums.The central point lighted torch can be withdrawn from behind firing coal-dust, avoids the damage of hyperthermia radiation to igniter, and the fire rod mouth blocks with blind flange.
The present invention's advantage compared with prior art is:
(1) will light a fire, three kinds of functions of flame monitoring and operate as normal are integrated in one, and the type of furnace that is fit to different structure is used, and has wide range of applications.Fire rod can be withdrawn from behind firing coal-dust, avoids ablating;
(2) be provided with the multilayer cooling structure, gas medium passage and coal dust passage all have cooling jacket protection, have prolonged burner service life greatly;
(3) 2～5 coal pipes of coal dust employing are carried, and can or reduce the adjusting of number of tubes realization to the coal dust conveying capacity by increase, thereby regulate the live load of burner;
(4) coal pipe adopts the spiral coil form, can form very strong eddy flow during the coal dust ejection, accelerates the mixing velocity of coal dust and oxidant, forms short and thick flame during burning, reduces body of heater length.Choosing suitable pitch avoids the coal dust blocking pipeline and forms bigger flow resistance;
(5) the gasifying agent pipeline is connected the air channel with the fuel gas pipeline and after connecing one time by a pipe, and two kinds of gases switch by valve control to be finished.Inserting gasifying agent is after stopping feed for fear of fuel gas, and flame forms backflow in the fuel gas passage, and gasifying agent can play the cooling protection effect to an air channel simultaneously;
(6) oxidant outlet is provided with swirl-flow devices, accelerates the mixing velocity of oxidant and coal dust.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein, 1. fire rod, 2. fuel gas passage, 3. cooling jacket, 4. the cooling medium of cooling jacket outlet, 5. the clamping plate of a cooling jacket, 6. oxidant inlet, 7. secondary cooling jacket, 8. oxidant channel, 9. the cooling medium inlet of secondary cooling jacket, the 10. clamping plate of secondary cooling jacket, the end cap between 11. secondary cooling jackets and three cooling jackets, 12. the cooling medium inlet of three cooling jackets, 13. three cooling jackets, 14. combustible powder passages, 15. 3 cooling jacket outer layer channels, 16. the clamping plate of three cooling jackets, 17. three cooling jacket internal layer passages, 18. mounting flanges, 19. 3 cooling jacket cooling medium outlets, 20. spiral coal pipe, 21. secondary cooling jacket outer layer channel, the outlet of 22. secondary cooling jacket cooling mediums, 23. secondary cooling jacket internal layer passages, 24. secondary cooling jacket end cap, 25. a cooling jacket outer layer channel, 26. cooling jacket internal layer passages, 27. cooling jacket cooling medium inlets, 28. fuel gas and gasifying agent import, 29. a cooling jacket end cap, 30. flame monitoring apparatus, 31. oxidant swirl-flow devices
The specific embodiment
As shown in Figure 1, burner of the present invention center is provided with on the end cap 29 of 1, cooling jacket of a cooling jacket 3, cooling jacket 3 centers insertion point lighted torch and arranges flame monitoring apparatus 30; Fuel gas pipeline and gasifying agent pipeline also insert a pipeline, are connected with import 28, and import 28 is connected with an air channel 2, and fuel gas and gasifying agent switch by valve; Oxidant flows into from oxidant inlet 6, by oxidant channel 8 back ejections; A cooling jacket 3 is secondary cooling jacket 7 outward, and secondary cooling jacket 7 outer wall spirals twine 2～5 coal pipes 20, and coal dust is by the ejection of coal pipe eddy flow; The burner outermost layer is arranged three cooling jackets 13; Cooling medium is respectively behind cooling jacket cooling medium inlet 27, secondary cooling jacket cooling medium inlet 9 and three cooling jacket cooling medium inlet 12 admission passages, flow into internal layer by the passage skin, export cooling medium outlet 22 outflows of 19 and three cooling jackets from the cooling medium outlet 4 of a cooling jacket, the cooling medium of secondary cooling jacket respectively at last; Cooling jacket 3, secondary cooling jacket 7 and three cooling jackets 13 are divided into inside and outside two-layer successively respectively by the clamping plate 16 of the clamping plate 10 of the clamping plate 5 of a cooling jacket, secondary cooling jacket, three cooling jackets, cooling medium enters from skin, and internal layer flows out; Space between adjacent chuck tube wall and the tube wall, space between chuck inwall and the clamping plate, form fuel gas passage 2, cooling jacket outer layer channel 25, cooling jacket internal layer passage 26, oxidant channel 8, secondary cooling jacket outer layer channel 21, secondary cooling jacket internal layer passage 23, combustible powder passage 14, three cooling jacket outer layer channels 15 and three cooling jacket internal layer passages 17 successively, oxidant channel 8 exits can install oxidant swirl-flow devices 31 additional.Whole burner is fixed in burner by mounting flange 18.
Flame monitoring apparatus 30 can pass gas medium, induction flame region high temperature.Oxidant swirl-flow devices 31 evenly is welded on the tube wall along circumference by sector bending back and is made.Coal pipe, swirl vane and cooling jacket head all adopt high temperature resistant, the anti-alloy material that washes away, for example HAYNES 188 alloys.Fire rod 1 and flame monitoring apparatus 30 can outsourcings.Three times cooling jacket 13 can replace with cooling coil, and cooling coil divides inside and outside two-layer, and cooling medium flows into one side-entrance of burner housing head from outer cooling coil, and the internal layer of opposite side exit inflow from the head cooling coil is drained after the circulation.But cooling coil structure more complicated easily causes damage during dismounting.
The course of work of the present invention: fuel gas passage 2 charges into fuel gas when igniting, an amount of oxidant of oxidant channel 8 supplies.Fuel gas is opened coal dust charging valve after fire rod 1 is lighted, increase the supply of oxidant simultaneously gradually.Utilize the flame of fuel gas that coal dust is lighted, reduce the fuel gas flow then gradually, open gasifying agent charging valve and increase its flow gradually.Stop the fuel gas air feed at last, the medium that this moment, fuel gas passage 2 flow through is a gasifying agent.Coal dust is divided into 2～5 coal pipes to be carried as carrier by assist gas, and coal pipe 20 is uniformly distributed along the circumference in combustible powder passage 14, is spirally wound on secondary cooling jacket 7 outer walls.During operate as normal, fire rod 1 can be withdrawn from.In entire work process, there is cooling medium to pass through all the time in three layers of cooling jacket, with the protection burner.During the burner completion of combustion, stop the coal dust charging earlier, stop oxidant feed at last.

Claims (3)

1, powder-combustible vortex burner is characterized in that: the burner center radially is cooling jacket, secondary cooling jacket and three cooling jackets outward successively, and three layers of chuck concentric are arranged; One time igniter is inserted at the cooling jacket center, arranges flame monitor on the cooling jacket end cap; Space between space in the chuck and adjacent chuck tube wall and the tube wall forms fuel gas passage, cooling duct, oxidant channel, secondary cooling duct, combustible powder passage and three cooling ducts successively; Fuel gas carrier pipe and gasifying agent carrier pipe access in parallel fuel gas passage, the switching of two kinds of gas conveyings is controlled by valve; The oxidant channel exit installs swirl-flow devices additional, and coal dust adopts 2～5 coal pipes to carry, and coal pipe is uniformly distributed along the circumference in the combustible powder passage, is spirally wound on secondary cooling jacket outer wall, and coal dust sprays at coal pipe exit eddy flow.
2, powder-combustible vortex burner according to claim 1, it is characterized in that: a described cooling jacket, secondary cooling jacket and three cooling jackets are formed by installing a laminated plank additional in the middle of the annulus, and clamping plate are divided into inside and outside two-layer passage with sleeve.
3, powder-combustible vortex burner according to claim 1, it is characterized in that: described three cooling jackets can adopt cooling coil to substitute, cooling coil is divided into inside and outside two-layer, and outer coil pipe is a coolant feed pipes, and the internal layer coil pipe is the cooling medium discharge nozzle.
CNB2005100797024A 2005-06-24 2005-06-24 Powder-combustible vortex burner Active CN1323261C (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949538A (en) * 2010-09-06 2011-01-19 昆明理工大学 Combustion nozzle with internal cooling channel and external cooling channel for gasifying powdery carbon fuel
CN102287825A (en) * 2011-07-15 2011-12-21 马鞍山科达洁能股份有限公司 Burning nozzle and coal-gasifying furnace

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DE102007040890A1 (en) 2007-08-29 2009-03-05 Siemens Ag Coal dust combination burner with integrated pilot burner
US8434700B2 (en) 2008-04-30 2013-05-07 General Electric Company Methods and systems for mixing reactor feed
CN101650031B (en) * 2009-09-18 2011-04-13 兖矿集团有限公司 Start-up compound burner for water-coal-slurry or coal dust gasification furnace
CN101691924B (en) * 2009-10-21 2011-08-17 北京航天动力研究所 Water coal slurry pressure gasification process burner device with ignition device
JP5529291B2 (en) 2009-12-24 2014-06-25 チャンチョン エンジニアリング カンパニー リミティド Fuel distributor and burner
CN102746899A (en) * 2012-04-25 2012-10-24 神华集团有限责任公司 Coal water slurry/coal fine gasification furnace and feeding method thereof
CN103822208A (en) * 2012-11-16 2014-05-28 航天长征化学工程股份有限公司 Burner of gasification furnace
CN103881758B (en) * 2014-01-26 2015-11-25 西安交通大学 A kind of narrow passage sprays the gasifying process burner of cooling
CN103937553B (en) * 2014-01-26 2015-10-21 西安交通大学 A kind of gasifying process burner of novel jet flow impinging cooling
CN103881760B (en) * 2014-01-26 2015-11-25 西安交通大学 The hydronic gasifying process burner in a kind of novel microchannel
CN103805288A (en) * 2014-03-13 2014-05-21 杜建吉 High-efficiency pulverized coal burner for dried pulverized coal fluidized bed gasification furnace
CN104611065B (en) * 2015-01-14 2017-02-22 清华大学 Double-swirling pulverized coal spray nozzle for dry powder gasifier
CN105864756A (en) * 2016-05-20 2016-08-17 哈尔滨华氏海德科技发展有限公司 Combined multi-nozzle burner for combustible powder
CN106190329A (en) * 2016-08-26 2016-12-07 安徽科达洁能股份有限公司 Coal dust burner
CN106398777A (en) * 2016-10-13 2017-02-15 安徽科达洁能股份有限公司 Pulverized coal gasification combined burner
CN108728168A (en) * 2017-04-14 2018-11-02 航天长征化学工程股份有限公司 Gasification burner
CN110577846B (en) * 2019-09-12 2021-02-05 杨建平 Combustion system and burner

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CN1101113A (en) * 1993-09-28 1995-04-05 德士古发展公司 Partial oxidation prcess and burner with porous tip
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CN2800077Y (en) * 2005-06-24 2006-07-26 北京航天动力研究所 Vortex burner with flammable powder as fuel

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Publication number Priority date Publication date Assignee Title
CN1042596A (en) * 1988-11-05 1990-05-30 克鲁普克普斯有限公司 The gasification combustor of apparatus for gasifying solid fuel
CN1073472A (en) * 1991-12-05 1993-06-23 赫彻斯特股份公司 Be used to produce the burner of synthetic gas
CN1077328A (en) * 1991-12-12 1993-10-13 克瓦纳尔工程有限公司 Torch device for chemical processes
CN1101113A (en) * 1993-09-28 1995-04-05 德士古发展公司 Partial oxidation prcess and burner with porous tip
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949538A (en) * 2010-09-06 2011-01-19 昆明理工大学 Combustion nozzle with internal cooling channel and external cooling channel for gasifying powdery carbon fuel
CN102287825A (en) * 2011-07-15 2011-12-21 马鞍山科达洁能股份有限公司 Burning nozzle and coal-gasifying furnace

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