CN1710333A - Powder-combustible vortex burner - Google Patents

Powder-combustible vortex burner Download PDF

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Publication number
CN1710333A
CN1710333A CN 200510079702 CN200510079702A CN1710333A CN 1710333 A CN1710333 A CN 1710333A CN 200510079702 CN200510079702 CN 200510079702 CN 200510079702 A CN200510079702 A CN 200510079702A CN 1710333 A CN1710333 A CN 1710333A
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China
Prior art keywords
cooling
cooling jacket
coal
powder
channel
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CN 200510079702
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CN1323261C (en
Inventor
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

A vortex burner of combustible micropowder i.e pulverized coal is prepared by setting primary cooling jacket with an ignition device at the centre of it and a flame detection device at jacket top cover ; arranging primary , secondary and tertiary cooling jackets in sequence coaxially as radial outwards to form primary and secondary air channel and cooling channel , tertiary micropowder channel and tertiary channel ; connecting primary air-channel to fuel gas inlet tube and gasifying agent inlet tube after they are combined for switching over two gases by valve ; setting spiral - flow device at secondary air-channel outlet and jetting out pulverized coal in spiral - flow way at its conveying tube outlet.

Description

A kind of powder-combustible vortex burner
Affiliated 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 is characterized in that: the burner center is provided with cooling jacket one time, and one time the high-energy ignition rod is inserted at the cooling jacket center, arranges flame monitor on the end cap; Cooling jacket, secondary cooling jacket and three cooling jackets, radially pressing concentric outward successively places, space between adjacent cooling jacket tube wall and the tube wall, the space in the chuck form an air channel, cooling duct, secondary air duct, secondary cooling duct, three powder roads and three cooling ducts successively; The fuel gas inlet pipeline is connected with an air channel with the gasifying agent inlet pipeline and after connecing, and two kinds of gases switch by valve; The secondary air duct exit installs swirl-flow devices additional; Coal dust adopts 2～5 coal pipes to carry, and coal pipe is uniformly distributed along the circumference in three powder roads, is spirally wound on secondary cooling jacket outer wall, and coal dust sprays from 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 air channel 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 three powder roads, 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 secondary air duct 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 in an air channel and refluxes, 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. air channel, 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. secondary air duct, 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. 3 powder roads, 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 secondary air duct 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 air channel 2, cooling jacket outer layer channel 25, cooling jacket internal layer passage 26, secondary air duct 8, secondary cooling jacket outer layer channel 21, secondary cooling jacket internal layer passage 23, three powder roads 14, three cooling jacket outer layer channels 15 and three cooling jacket internal layer passages 17 successively, secondary air duct 2 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: one time air channel 2 charges into fuel gas when igniting, an amount of oxidant of secondary air duct 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, an air channel 2 was 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 three powder roads 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 is provided with cooling jacket one time, and one time igniter is inserted at the cooling jacket center, arranges flame monitor on the end cap; Cooling jacket, secondary cooling jacket and three cooling jackets, radially pressing concentric outward successively places, space between adjacent cooling jacket tube wall and the tube wall, the space in the chuck form an air channel, cooling duct, secondary air duct, secondary cooling duct, three powder roads and three cooling ducts successively; The fuel gas inlet pipeline is connected with an air channel with the gasifying agent inlet pipeline and after connecing, and two kinds of gases switch by valve; The secondary air duct exit installs swirl-flow devices additional; Coal dust adopts 2～5 coal pipes to carry, and coal pipe is uniformly distributed along the circumference in three powder roads, 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 (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009027361A2 (en) * 2007-08-29 2009-03-05 Siemens Aktiengesellschaft Combined pulverized coal burner comprising an integrated pilot burner
CN102015972A (en) * 2008-04-30 2011-04-13 通用电气公司 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
WO2011075874A1 (en) 2009-12-24 2011-06-30 北京航天万源煤化工工程技术有限公司 Fuel distribution device and burner
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
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
CN103805288A (en) * 2014-03-13 2014-05-21 杜建吉 High-efficiency pulverized coal burner for dried pulverized coal fluidized bed gasification furnace
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
CN103881760A (en) * 2014-01-26 2014-06-25 西安交通大学 Novel micro-channel circularly cooling gasification process nozzle
CN103881758A (en) * 2014-01-26 2014-06-25 西安交通大学 Novel gasifying process nozzle with function of spray cooling through narrow channels
CN103937553A (en) * 2014-01-26 2014-07-23 西安交通大学 Novel jet impingement cooling gasification technology burner
CN104611065A (en) * 2015-01-14 2015-05-13 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
CN110577846A (en) * 2019-09-12 2019-12-17 杨建平 Combustion system and burner

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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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DE3837586A1 (en) * 1988-11-05 1990-05-10 Krupp Koppers Gmbh GASIFICATION BURNER FOR A PLANT FOR GASIFYING SOLID FUELS
DE4140063A1 (en) * 1991-12-05 1993-06-09 Hoechst Ag, 6230 Frankfurt, De BURNER FOR THE PRODUCTION OF SYNTHESIS GAS
NO174180C (en) * 1991-12-12 1994-03-23 Kvaerner Eng Burner insertion tubes for chemical processes
CN1056916C (en) * 1993-09-28 2000-09-27 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

Cited By (27)

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US8070484B2 (en) 2007-08-29 2011-12-06 Siemens Aktiengesellschaft Combination pulverized fuel burner with integrated pilot burner
DE202007018718U1 (en) 2007-08-29 2009-05-14 Siemens Aktiengesellschaft Coal dust combination burner with integrated pilot burner
WO2009027361A3 (en) * 2007-08-29 2010-04-08 Siemens Aktiengesellschaft Combined pulverized coal burner comprising an integrated pilot burner
WO2009027361A2 (en) * 2007-08-29 2009-03-05 Siemens Aktiengesellschaft Combined pulverized coal burner comprising an integrated pilot burner
CN101403496B (en) * 2007-08-29 2013-02-06 西门子公司 Combined pulverized coal burner comprising an integrated pilot burner
CN102015972A (en) * 2008-04-30 2011-04-13 通用电气公司 Methods and systems for mixing reactor feed
US8434700B2 (en) 2008-04-30 2013-05-07 General Electric Company Methods and systems for mixing reactor feed
CN104845676A (en) * 2008-04-30 2015-08-19 通用电气公司 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
WO2011075874A1 (en) 2009-12-24 2011-06-30 北京航天万源煤化工工程技术有限公司 Fuel distribution device and burner
US9541283B2 (en) 2009-12-24 2017-01-10 Changzheng Engineering Co., Ltd. Fuel distribution device and a 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
CN103937553A (en) * 2014-01-26 2014-07-23 西安交通大学 Novel jet impingement cooling gasification technology burner
CN103881760A (en) * 2014-01-26 2014-06-25 西安交通大学 Novel micro-channel circularly cooling gasification process nozzle
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
CN103881758A (en) * 2014-01-26 2014-06-25 西安交通大学 Novel gasifying process nozzle with function of spray cooling through narrow channels
CN103805288A (en) * 2014-03-13 2014-05-21 杜建吉 High-efficiency pulverized coal burner for dried pulverized coal fluidized bed gasification furnace
CN104611065A (en) * 2015-01-14 2015-05-13 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
CN110577846A (en) * 2019-09-12 2019-12-17 杨建平 Combustion system and burner

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