CN102052677B - Industrial gas burner - Google Patents

Industrial gas burner Download PDF

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Publication number
CN102052677B
CN102052677B CN201110024489A CN201110024489A CN102052677B CN 102052677 B CN102052677 B CN 102052677B CN 201110024489 A CN201110024489 A CN 201110024489A CN 201110024489 A CN201110024489 A CN 201110024489A CN 102052677 B CN102052677 B CN 102052677B
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gas
combustion
distribution pipe
air
gas distribution
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CN102052677A (en
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蒋玉亭
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LANZHOU TINDER COMBUSTION EQUIPMENT ENGINEERING Co Ltd
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LANZHOU TINDER COMBUSTION EQUIPMENT ENGINEERING Co Ltd
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Abstract

The invention discloses a burner for burning an industrial gas. The structure of the industrial gas burner is as follows: a gas chamber is arranged at the tail end of a gas supply pipe, the gas chamber is separated from an air chamber by a partition plate, a gas distribution pipe bundle is arranged on the partition plate and positioned inside the air chamber, guide vanes are arranged inside the individual gas distribution pipes, holes are formed on the walls of the individual gas distribution pipes and communicated with the air chamber, and the distance from the tail end on the downstream side of the gas distribution pipe bundle to the margin of the tail end of the air chamber ranges from 30 mm to 50 mm, which defines a space that serves as a gas and air mixing and combustion chamber.

Description

A kind of industrial combustion gas burner
Technical field
The present invention relates to that a kind of industry uses, is the burner of fuel with the fuel gas, and the present invention exactly is a kind of burner of burning industrial combustion gas.This burner is by air compartment, combustion gas storehouse and place gas distribution pipe bundle in the air compartment, place burner inside to have the central tube rifle of ignitor and be positioned at anterior combustion head and mounting flange constitutes.
Technical background
Existing industrial combustion gas burner adopts the blowing-type pre-mixed configuration mostly, and emphasical combustion gas fully mixes with combustion air.But ubiquity power is little, combustion gas and air can not precise proportioning, load regulation range is restricted, poor stability and to the combustion gas performance requirement than problems such as height, especially particularly outstanding to large scale industry gas burner problem.The domestic research that also has the partial monopoly technology to relate to above problem at present; But the mode of dealing with problems is too single; Can not take into account each other, like Chinese invention patent 02111914.7 disclosed complete pre-mixing type gas burner, 200710072397.5 disclosed strong premixed gas burners, the disclosed efficient gas burner of Chinese invention patent 200810010867X, the disclosed gas burner of 02273600.X, 02228538.5 disclosed efficient energy-saving gas burner, 200720150391.0 disclosed industrial stoving, heating with the cellular gas burner of full premix etc.200710072397.5 to be example, its technical solution is: have spray gun Gas Pipe and spray gun aid distributing pipe that inclined hole, front end have spray orifice on its spray tip.The spray gun Gas Pipe connects combustion gas through gas conduct pipe and divides tubular combustion gas main stem and shunting, and first blender is one group, the spray orifice in its inner air flue corresponding one by one Gas Pipe of inlet and air channel; Second blender and the 3rd blender respectively are two groups, and between blender and the blender, blender and spray tip be provided with mixing chamber, combustion gas and air import at the inlet of first blender, mix the back at mixing chamber and spray from the spray tip inclined hole.Spray gun Gas Pipe and spray gun aid distributing pipe are equipped with control valve.Though this technology has solved the mixed problem of combustion gas and combustion air, structure is too numerous and diverse, and particularly the burner of this type requires height to the pressure and the cleanliness factor of combustion gas, and flame holding is poor when fluctuation appears in bleed pressure.
Existing all kinds of burner all not too is applicable to the lower industrial combustion gas of combustion heat value (like blast furnace gas); Be not suitable for containing in the burning gases combustion gas of more solid impurity especially, the burner of the burning industrial combustion gas of practical application now exists the deficiency that is prone to take place tempering again.In addition, because the industrial combustion gas calorific value is lower, all there is the common fault of ignition difficulties in present all kinds of burners.
Summary of the invention
The present invention provides a kind of can overcome the prior art deficiency, and it is big, applied widely and have a gas burner of good function of preventing back-fire to fuel gas to have power, gas burner that especially still can smooth combustion when fuel gas pressure fluctuates.
The structure of industrial combustion gas burner of the present invention is that the end at the gas supply pipe is provided with a combustion gas storehouse; The combustion gas storehouse separates with a dividing plate and air chamber; Dividing plate is provided with the gas distribution pipe bundle that is positioned at air chamber; The gross area of gas distribution pipe bundle is pressed gas flow rate and is confirmed at 25~30m/s; The diameter of each gas distribution pipe is 1/10~1/20 with the length ratio, and confirms the quantity of gas distribution pipe in each gas distribution pipe, to be provided with guide vane by this scope; Downstream at each gas distribution pipe offer the hole that is communicated with air chamber on its tube wall beyond total length 6/7; The gross area in the hole on each gas distribution pipe footpath is 0.05~0.008 with the ratio in this gas distribution pipe footpath, and the distance of gas distribution pipe bundle downstream end and combustion air chamber terminal edge is 30~50mm, mixed wind and the combustion chamber that mix with air for combustion gas in this zone.For the industrial combustion gas that has more solid impurity in the combustion gas (being that grey dirty rank is higher in the combustion gas); The present invention provides a kind of and the slightly different another kind of industrial combustion gas burner of previous combustion device structure; Its concrete structure is that the end at the gas supply pipe is provided with a combustion gas storehouse, and the combustion gas storehouse separates with a dividing plate and air chamber, and dividing plate is provided with the gas distribution pipe bundle that is positioned at air chamber; The gross area of gas distribution pipe bundle is pressed gas flow rate and is confirmed at 25~30m/s; The diameter of each gas distribution pipe is 1/10~1/20 with the length ratio, and presses the quantity of this scope gas distribution pipe, in each gas distribution pipe, is provided with guide vane; On its tube wall beyond total length 6/7, offering the hole that is communicated with air chamber on each gas distribution pipe; The gross area in each hole confirms that by 0.75~5 times of the required theoretical air requirement of fuel gas buring of corresponding gas distribution pipe output promptly the aperture gross area on each gas distribution pipe footpath is 0.05~0.008 with the ratio in this gas distribution pipe footpath, and the distance that downstream end and air bin terminal edge are restrained in combustion gas is 30~50mm; This zone is for mixing wind and combustion zone; The air chamber inwall of position, combustion zone is provided with the guide vane that is in tilted layout along axis, and the height of guide vane is 50~90mm, and the helical pitch of guide vane is 1.
In above technical scheme, the footpath/long value of gas distribution pipe is 1/20 for low-pressure fuel gas, can be greater than the value between 1/20 to 1/10 for this value of high-pressure gas greater than 5KPa;
The size of the air capacity of sneaking in the gas distribution pipe is directly proportional with the fuel gases calorific value size, little its lower limit of then getting of fuel gases calorific value;
Preferably: the outline cross section of industrial combustion gas burner of the present invention is circular, and air inlet pipe and the inlet plenum of air chamber are tangent, and the interior flow direction of rotating gas of the gas flow that makes the gas distribution pipe ejection and air chamber is opposite.The combustion gas that from gas distribution pipe, sprays is more effectively mixed with air.
Be not easy the deficiency of being ignited to the low industrial combustion gas burner of calorific value; The present invention provides place's improved plan on the basis of above-described two types of burners, promptly be provided with the central tube rifle that a combustible gas source is communicated with and has ignitor at its axis place of previous combustion device, and this central tube rifle is made up of with the combustion air passage that is positioned at outside it Gas Pipe at the center of being arranged at; And central tube rifle and combustion gas storehouse are isolated; Be provided with the diffusion aperture that is communicated with air chamber at the Gas Pipe end, little hole area is pressed 1/4 of burning torch combustion gas circulation area and is confirmed, is positioned at central tube rifle outlet 50mm place guide vane is set; The blade helical pitch is 1, height 50mm.For the industrial combustion gas that is difficult to especially ignite; Can be with the Gas Pipe in the aforesaid central tube rifle and the second flammable source of the gas; Particularly the fuel gas source of certain high heating value (like liquefied petroleum gas) is communicated with; Central point fire tube rifle is introduced in the combustion gas of high heating value, and high heating value combustion gas capable of using is so in use burnt in burner earlier, and then lights industrial combustion gas and set up burning.
Burner of the present invention preferably adopts spout (being the combustion zone) the structure manufacturing of steel shell and heat-resistance stainless steel system.
The invention has the advantages that:
1) combustion gas is incorporated into the burning position in the nearly exit of burner through the gas distribution pipe bundle from the combustion gas storehouse; On its tube wall beyond total length 6/7, offering the aperture that is communicated with air chamber on each gas distribution pipe, can realize the normal combustion of fuel gas with low heat value effectively so simultaneously in the burner combustion position.Show through calculating and test; The air capacity of the gas distribution pipe of importing is 0.75~5 times of gas quantity; It is gas distribution pipe footpath and the ratio 0.05~0.008 of the aperture gross area; This can make the combustion gas in the gas distribution pipe sneak into little air in advance on the one hand, can carry out the problem that abundant capacity is mixed with regard to having solved in combustion gas with air at burning position like this, is unlikely to again as prior art, to sneak into the excessive deficiency that influences its burning because of air simultaneously.
2) owing to adopted these the simplest technical measures of gas distribution pipe that have than big L/D ratio, can overcome the tempering problem that takes place in the burning effectively
3) combustion gas is employed in the technical scheme that guide vane is set in the gas distribution pipe for general industrial; To the higher industrial combustion gas of the dirty rank of ash; Then adopted the air bin inwall of the position, combustion zone of burner to be provided with the guide vane structure that is in tilted layout along axis; Can overcome like this and make in the combustion gas solid impurity the influence of burner; A kind of structure after adopting particularly can be avoided solid impurity bigger in industrial combustion gas obstruction and the deposition to burner fully.
4) among the present invention, fuel gas is intrafascicular through guide vane formation eddy flow and the combustion air interaction that gets into air compartment through the tangential at gas distribution pipe, can fully mix, and can guarantee the rigidity and the flame size of flame.
5) the present invention particularly imports second fuel gas source because configuration independently has the central tube rifle of ignitor in the central tube rifle, can guarantee still can normally ignite when more or calorific value is low at source of the gas impurity.
6) adopt device of the present invention, add some attached electric control valves etc. again, can also control burning condition easily.
Description of drawings
Accompanying drawing 1 is typical structure generalized section of the present invention.Wherein: 1 for having the supply air line of steam supply valve group; 2 for having the air-supply pipeline of air feed valve group; 3 is ignition circuit; 4 is air inlet; 5 are the combustion gas storehouse; 6 is air inlet; 7 is the combustion air chamber; 8 for having the central tube rifle of ignitor; 9 is the gas distribution pipe bundle; 10 is gripper shoe; 11 for mixing wind and combustion chamber; 12 is combustion head; 13 is the burner installation panel.
Accompanying drawing 2 is the radial section sketch map of gas distribution pipe bundle.Wherein 14 is the helical form guide vane.
Accompanying drawing 3 is combustion air inlet sketch map.This shows that the combustion air tangential gets into combustion-supporting air compartment.
Accompanying drawing 4 is for having the central tube rifle structural representation of ignitor.15 are ignitor insertion mouth; 16 is that the compressed air inlet is used in igniting; 17 is ignitor; 18 are the igniting fuel gas inlet; 19 are the igniting tube bank; 20 is central tube rifle and burner mounting flange.
Accompanying drawing 5 is for being arranged at the swirl vane sketch map at burning torch outlet 50mm place.21 is spinning disk; 22 is burning torch; 23 is the combustion air passage; 24 is center gun barrel wall; 25 are the igniting Gas Pipe.
Specific embodiments
Accompanying drawing is embodiments of the invention.
Fuel gas gets into combustion gas storehouse 5 by supply air line 1 through air inlet 4 in the accompanying drawing 1.Dividing plate of combustion gas storehouse 5 usefulness and air chamber 7 separate.Dividing plate is provided with gas distribution pipe bundle 9, by gas distribution pipe bundle 9 to mixed wind combustion zone 11 and combustion air mixed combustion.24 gas distribution pipes (referring to accompanying drawing 2) have been used in the present embodiment; On each gas distribution pipe, offer the hole (not representing these holes in the drawings) that communicates with combustion air chamber 7; Open at the terminal 130mm of distance place in these holes, 8 of hoop staggered arrangement perforates, and the aperture of each aperture is Φ 14mm.The length of guide vane is 50~90mm; The helical pitch of guide vane is 1; Each gas distribution pipe caliber is 45 millimeters; Long 900 millimeters, combustion air gets into combustion-supporting air compartment 7 by air-supply pipeline 2 through air inlet 6 tangentials and forms eddy flow to wind mixed chamber 11 and combustion gas mixing, and the rotation direction of combustion air is opposite with the fuel gas flow rotation direction.Suitable fuel of the present invention is a blast furnace gas, and calorific value is 3260KJ/Nm 3, the rated power downforce is 3.2KPa, flow velocity is 27m/s.Be arranged at the steam supply valve group of supply air line and the air feed valve group passing ratio adjuster of air-supply pipeline among the present invention and link each other, thereby guarantee combustion gas and combustion air precise proportioning.Every tube interior in gas distribution pipe bundle 9 is provided with guide vane 14; The combustion gas that gets into the gas distribution pipe bundle is formed and the eddy flow of chamber 11 air opposite courses under the effect of guide vane; Eddy flow in tube bank exit and combustion air formation interacts, and reaches well-mixed purpose.This gas distribution pipe bundle has typical back-fire relief structural design simultaneously, has function of preventing back-fire.
In the present embodiment, the burner igniting is to be accomplished by the central tube rifle that has independent ignitor 17 8.It can be fuel gas that this central tube rifle injects source of the gas, also can insert other easy fuel gas source separately, like liquefied petroleum gas; It is outer to be the combustion air passage, i.e. 30~50KPa compressed air channel.Central tube rifle and combustion gas storehouse are isolated.Its combustion air is with compressed air inlet 16 compressed and supplied air through igniting.This part compressed air has the effect of cooling ignitor simultaneously, uses safely under the situation that needn't withdraw from combustion head 12 after the igniting action completion to guarantee ignitor.Central tube rifle 8 is connected through mounting flange 20 with burner, is convenient to repair and replacement.
Visible from accompanying drawing 4, the central tube rifle 8 that has independent ignitor 17 is the equal of a small-power burner that places in the burner.In actual use, confirm that at first this ignition flame has been set up after, open steam supply valve group and air feed valve group again, main flame ignites; After confirming that main flame is set up, ignition process is accomplished.This process can be programme-control, and is safe and reliable to guarantee to light a fire, and when the main fuel gaseous impurity when more or calorific value is low this sparking mode seem particularly important.
The end view of the central tube rifle that is provided by accompanying drawing 5 is visible, apart from the outlet 50mm place of burning torch 22 be provided with spinning disk 21, burning torch 22 is outer to be igniting Gas Pipe 25, is combustion air passage 23 outside the igniting Gas Pipe 25.
In this example, the large scale industry gas burner adopts steel design, when fuel gas and combustion air temperature reach 300 degrees centigrade, still can keep the safety in production.In practical application, fuel gas can directly use industrial flammable tail gas, and combustion air can get into the burner effects of energy conservation and environmental protection after the waste heat heating remarkable.Gas distribution pipe bundle of this burner and combustion head partly adopt heat-resistance stainless steel to process, and equipment is estimated its service life and is no less than 5 years.

Claims (5)

1. industrial combustion gas burner; Comprise: the gas supply pipe that is connected with the industrial combustion gas source, be connected with air source and be positioned at the outer air chamber of gas distribution pipe, be used to make flowing gas to produce the guide vane of rotation; Reach the wind mixed chamber that combustion gas mixes with air; The end that it is characterized in that the gas supply pipe is provided with a combustion gas storehouse, and the combustion gas storehouse separates with a dividing plate and air chamber, and dividing plate is provided with the gas distribution pipe bundle that is positioned at air chamber; The gross area of gas distribution pipe bundle is pressed gas flow rate and is confirmed at 25~30m/s; The diameter of each gas distribution pipe is 1/10~1/20 with the length ratio, and confirms the quantity of gas distribution pipe in each gas distribution pipe, to be provided with guide vane by this scope; Downstream at each gas distribution pipe offer the hole that is communicated with air chamber on its tube wall beyond total length 6/7; The gross area in the hole on each gas distribution pipe footpath is 0.05~0.008 with the ratio in this gas distribution pipe footpath, and the distance of gas distribution pipe bundle downstream end and combustion air chamber terminal edge is 30~50mm, mixed wind and the combustion chamber that mix with air for combustion gas in this zone.
2. industrial combustion gas burner; Comprise: the gas supply pipe that is connected with the industrial combustion gas source, be connected with air source and be positioned at the outer air chamber of gas distribution pipe, be used to make flowing gas to produce the guide vane of rotation; Reach the wind mixed chamber that combustion gas mixes with air; The end that it is characterized in that the gas supply pipe is provided with a combustion gas storehouse, and the combustion gas storehouse separates with a dividing plate and air chamber, and dividing plate is provided with the gas distribution pipe bundle that is positioned at air chamber; The gross area of gas distribution pipe bundle is pressed gas flow rate and is confirmed at 25~30m/s; The diameter of each gas distribution pipe is 1/10~1/20 with the length ratio, and presses the quantity of this scope gas distribution pipe, in each gas distribution pipe, is provided with guide vane; Downstream at each gas distribution pipe offer the hole that is communicated with air chamber on its tube wall beyond total length 6/7; The gross area in each hole confirms that by 0.75~5 times of the fuel gas buring required air quantity of corresponding gas distribution pipe output the gross area in the hole on each gas distribution pipe footpath is 0.05~0.008 with the ratio in this gas distribution pipe footpath, and the distance that downstream end and air chamber terminal edge are restrained in combustion gas is 30~50mm; Mixed wind and the combustion chamber that mix with air for combustion gas in this zone; The air chamber inwall of position, combustion zone is provided with the guide vane that is in tilted layout along axis, and the height of guide vane is 50~90mm, and the helical pitch of guide vane is 1.
3. industrial combustion gas burner according to claim 1 and 2; The outline cross section that it is characterized in that burner is for circular; Air inlet pipe and combustion air chamber are tangent, and the eddy flow that rotates gas in eddy flow direction and the air chamber of the gas of gas distribution pipe ejection under the guide vane effect is in the opposite direction.
4. industrial combustion gas burner according to claim 3 is characterized in that being provided with a central tube rifle that is communicated with and has ignitor with combustible gas source along its axis place, and this central tube rifle is made up of burning torch, the igniting Gas Pipe at the center of being arranged at and the combustion air passage that is positioned at outside the igniting Gas Pipe; Burning torch is the igniting Gas Pipe outward; The igniting Gas Pipe be outward the combustion air passage, and central tube rifle and combustion gas storehouse completely cut off, and is provided with the diffusion aperture that is communicated with air chamber at the Gas Pipe end; Little hole area is pressed 1/4 of burning torch combustion gas circulation area and is confirmed; Be positioned at central tube rifle outlet 50mm place guide vane is set, the blade helical pitch is 1, height 50mm.
5. according to the industrial combustion gas burner of claim 4, it is characterized in that the Gas Pipe in the central tube rifle is communicated with second fuel gas source.
CN201110024489A 2011-01-19 2011-01-19 Industrial gas burner Active CN102052677B (en)

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CN102519039B (en) * 2011-11-24 2013-12-18 赵桐斌 Burner for gas calorific value instrument
BR102013033702B1 (en) * 2013-12-27 2019-06-25 Tecnored Desenvolvimento Tecnologico S.A. METALURGICAL OVEN
CN104949120A (en) * 2015-06-22 2015-09-30 刘洋 Combustor used for biomass gas industry water heater
CN105972602B (en) * 2016-05-24 2018-10-02 华东理工大学 A kind of processing unit of solid organic castoff and the treatment process containing it
CN106016434A (en) * 2016-07-05 2016-10-12 中国工程物理研究院总体工程研究所 Heating supply system for vacuum environment
CN108006639B (en) * 2017-12-30 2024-03-26 赵金岷 High-temperature high-pressure gas burner
CN108006628A (en) * 2017-12-30 2018-05-08 赵金岷 A kind of high temperature and high pressure flue gas generator
CN110360550A (en) * 2018-04-09 2019-10-22 江苏弗雷姆环境科技有限公司 Industrial combustion gas rotary energy saving low NO
CN110986039B (en) * 2019-12-18 2021-12-28 史星宇 Gas molecule collision diffusion premixing low-nitrogen combustion device and combustion head thereof

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