CN208205000U - Novel flue gas reflow type low NOx content burner - Google Patents
Novel flue gas reflow type low NOx content burner Download PDFInfo
- Publication number
- CN208205000U CN208205000U CN201721373719.5U CN201721373719U CN208205000U CN 208205000 U CN208205000 U CN 208205000U CN 201721373719 U CN201721373719 U CN 201721373719U CN 208205000 U CN208205000 U CN 208205000U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- housing cavity
- shell
- smoke backflow
- air
- 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.)
- Expired - Fee Related
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000011449 brick Substances 0.000 claims abstract description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 239000000779 smoke Substances 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011261 inert gas Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
A kind of Novel flue gas reflow type low NOx content burner, it include burner gun and combustion chamber, combustion chamber includes exhaust gases passes, burner gun includes shell, in offering air supply channel on shell, in setting quirk brick on shell, in being provided with central lance in quirk brick, it is provided with classification spray gun on the outside of quirk brick, offers smoke backflow hole in the lateral wall of quirk brick, smoke backflow hole is connected to the inner cavity of shell.The utility model has the following beneficial effects: forming high-speed jet using combustion air, negative pressure field is formed in housing cavity, the flue gas that combustion chamber is discharged is sucked back into forming smoke backflow in housing cavity in the way of negative-pressure adsorption, the flue gas to flow back in this way can be such that inert gas content in combustion zone increases, because of flue gas heat absorption and dilute the concentration of oxygen, reduce burning velocity and temperature, since flue gas recirculation reduces smoke NOx content, it can achieve and effectively inhibit nitrogen oxide generation and energy-efficient double effects.
Description
Technical field
The utility model relates to chemical equipment technical fields, more specifically, in particular to a kind of Novel flue gas reflow type
Low NOx content burner.
Background technique
Currently, industrial furnace used in petrochemical industry type factory is both provided with burner, existing in petrochemical industry
In technology, used burner is made of components such as burner shell, quirk brick, Fuel lances on industrial furnace.
The working principle of burner are as follows: mix fuel with combustion air in quirk brick, radiation of the flame in heating furnace
Indoor Combustion, and the heated medium in boiler tube being heated by flame radiation heat transfer, due to fuel oxygen-enriched combusting and
Conflagration generates high temperature, NO in the flue gas product after causing burningXContent severely exceed, reduction exhaust contaminant is not achieved
Environmentally friendly purpose.
Utility model content
(1) technical problem
In conclusion the efficiency of combustion of burner how is improved, to reduce NO in flue gasXContent, become ability
Field technique personnel's urgent problem to be solved.
(2) technical solution
The utility model provides a kind of Novel flue gas reflow type low NOx content burner, includes burner spray
Rifle and combustion chamber, the combustion chamber include exhaust gases passes, and the burner gun includes shell, are opened on the shell
Equipped with air supply channel, in being provided with housing cavity in the shell, quirk brick, the quirk brick are connected with the housing cavity
Injection channel is offered, the injection channel is connected to the housing cavity, is connected in the injection channel and the housing cavity
Logical position is provided with air and shouts mouthpiece, in being provided with central lance in the injection channel, in the outside of the quirk brick
It is provided with classification spray gun, the classification spray gun and the central lance are arranged in parallel and the lance outlet of the classification spray gun
It is arranged in the same direction with the lance outlet of the central lance, offers smoke backflow hole, the cigarette in the lateral wall of the quirk brick
Gas return port is connected to the housing cavity, is provided between the exhaust gases passes and the smoke backflow hole for smoke backflow
Smoke backflow channel.
Preferably, the housing cavity is cylindrical structure chamber, the bottom end of the housing cavity and the exhaust gases passes
Connection, the top of the housing cavity is connected to the injection channel.
Preferably, the injection channel is cylindrical body through-hole structure, and the central lance is set to the injection channel
On center line axis position.
Preferably, the air shouts mouthpiece position cone structure, and it includes big opening end and small that the air, which shouts mouthpiece,
Mouth end, the big opening end that the air shouts mouthpiece are arranged towards the housing cavity, and the air shouts the osculum end court of mouthpiece
It is arranged to the injection channel.
Preferably, the smoke backflow hole offers multiple, and whole smoke backflow holes is in the outer of the quirk brick
It is arranged at equal intervals on side.
Preferably, the classification spray gun is provided with multiple, and whole classification spray guns is on the lateral surface of the road brick
It is arranged at equal intervals.
Preferably, in being provided with air duct butterfly valve on the exhaust gases passes.
(3) beneficial effect
The utility model has the following beneficial effects: forming high-speed jet using combustion air, negative pressure is formed in housing cavity
, the flue gas that combustion chamber is discharged is sucked back into smoke backflow is formed in housing cavity in the way of negative-pressure adsorption, is returned in this way
The flue gas of stream can be such that inert gas content in combustion zone increases, and because flue gas absorbs heat and dilutes the concentration of oxygen, make burning velocity
It is reduced with temperature, since flue gas recirculation reduces smoke NOx content, can achieve and effectively inhibit nitrogen oxide generation and energy conservation
Double effects.
Detailed description of the invention
Fig. 1 is the partial structural diagram of burner gun in the utility model embodiment；
The corresponding relationship of component names and accompanying drawing number in the figure are as follows:
Shell 1, air supply channel 2, housing cavity 3, quirk brick 4, air shout mouthpiece 5,
Central lance 6, classification spray gun 7, smoke backflow hole 8.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
For illustrating the utility model, but cannot be used to limit the scope of the utility model.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term
The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Referring to FIG. 1, Fig. 1 is the partial structural diagram of burner gun in the utility model embodiment.
The purpose of this utility model are as follows: in order to improve the burn-off rate of fuel combustion, reduce the NO after burning in flue gasXContain
Amount, to develop, provide low NO after a kind of new combustionXThe burner of content.
For this purpose, the utility model provides a kind of Novel flue gas reflow type low NOx content burner, it is practical at this
In novel, which includes burner gun and combustion chamber, and combustion chamber is used for the burning of fuel, and combustion chamber includes cigarette
Gas channel, the flue gas after burning can be discharged by exhaust gases passes.
In order to reduce the content of nitrogen oxides in effluent, the utility model has carried out structure optimization to burner gun: combustion
Burner spray gun includes shell 1, and shell 1 can be made of metal material, such as stainless steel or cast iron, and shell 1 is using casting
Make technique integrated molding.
In offering air supply channel 2 on shell 1, air supply channel 2 is arranged on the position of shell 1 on the lower, sets in shell 1
It is equipped with housing cavity 3, fresh combustion-supporting gas is provided by air supply channel 2, combustion-supporting gas can enter in housing cavity 3 first.
It is connected with quirk brick 4 with housing cavity 3, quirk brick 4 offers injection channel, and shell 1 is arranged in using vertical mode in quirk brick 4
Top, injection channel is connected to housing cavity 3, and the combustion-supporting gas in such housing cavity 3 can be sprayed by injection channel
It goes out.
The position that injection channel is connected to housing cavity 3 is provided with air and shouts mouthpiece 5, air shouts mouthpiece 5 as cone
Body structure, it includes big opening end and osculum end that air, which shouts mouthpiece 5, and air shouts the big opening end of mouthpiece 5 towards housing cavity 3
Setting, the osculum end that air shouts mouthpiece 5 are arranged towards injection channel.Combustion-supporting gas can be in the effect of rear mouthpiece in this way
Lower quickly injection.
In being provided with central lance 6 in injection channel, the outside of quirk brick 4 is provided with classification spray gun 7, is classified spray gun 7
It is arranged in parallel with central lance 6 and is classified the lance outlet of spray gun 7 and be arranged in the same direction with the lance outlet of central lance 6.
Smoke backflow hole 8 is offered in the lateral wall of quirk brick 4, smoke backflow hole 8 is connected to housing cavity 3, and flue gas is logical
The smoke backflow channel for smoke backflow is provided between road and smoke backflow hole 8.
In said structure design, burner gun is divided into the central lance 6 being arranged on 4 center of quirk brick and sets
Set the classification spray gun 7 in 4 periphery of quirk brick.Combustion air is entered by air supply channel 2 inside the shell 1 of burner, by shell
After intracoelomic cavity 3 by air aditus laryngis component improve combustion air jet velocity, using air force quirk brick 4 injection channel
And negative pressure field is formed on 3 position of housing cavity, and since smoke backflow hole 8 is connected to housing cavity 3, flue gas can be
Enter housing cavity 3 under suction function and mixed with combustion air and is ejected into combustion chamber by injection channel.
The fuel gas and mixed combustion air catalytic combustion that central lance 6 ejects, spray from the spout of quirk brick 4
Out.The fuel gas of classification spray gun 7 injection of periphery is sprayed along the periphery of quirk brick 4 to burner centre direction, makes fuel and combustion
It is mixed and burned after burning indoor high-temperature flue gas mixing with the combustion air sprayed in quirk brick 4, flame is made to be in the oxygen-enriched of low temperature
Combustion state effectively controls the generation of temperature mode nitrogen oxides.
The utility model has the following beneficial effects: forming high-speed jet using combustion air, negative pressure is formed in housing cavity 3
, the flue gas that combustion chamber is discharged is sucked back into smoke backflow is formed in housing cavity 3 in the way of negative-pressure adsorption, is returned in this way
The flue gas of stream can be such that inert gas content in combustion zone increases, and because flue gas absorbs heat and dilutes the concentration of oxygen, make burning velocity
It is reduced with temperature, since flue gas recirculation makes flue gas NOXContent is reduced, and be can achieve and is effectively inhibited nitrogen oxide generation and energy conservation
Double effects.
Specifically, in order to guarantee that the distribution of 3 air pressure inside of housing cavity is more balanced, housing cavity 3 uses cylinder body cavity
The bottom end of cell structure, housing cavity 3 is connected to exhaust gases passes, and the top of housing cavity 3 is connected to injection channel.
Specifically, injection channel is cylindrical body through-hole structure, and central lance 6 is set to the center line axis position of injection channel
On.Certainly, injection channel can also use pyramidal pathways structure or hyperbola channel design.
In order to ensure the regurgitant volume of flue gas, smoke backflow hole 8 offers multiple, whole smoke backflow holes 8 in quirk brick 4
Lateral surface on be arranged at equal intervals.
Specifically, classification spray gun 7 is provided with multiple, whole classification spray guns 7 in being arranged at equal intervals on the lateral surface of road brick.
It is controlled in order to the intake to combustion-supporting gas, the utility model is provided with air duct butterfly on exhaust gases passes
Valve.By controlling air duct butterfly valve opening, the adjusting of combustion-supporting gas intake may be implemented.
The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustively or to incite somebody to action
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Embodiment was chosen and described in order to better illustrate the principle and practical application of the utility model, and makes this field
Those of ordinary skill it will be appreciated that the utility model to designing various embodiments suitable for specific applications with various modifications.
Claims (5)
- It include burner gun and combustion chamber 1. a kind of Novel flue gas reflow type low NOx content burner, it is described Combustion chamber includes exhaust gases passes, which is characterized in thatThe burner gun includes shell (1), in offering air supply channel (2) on the shell, is set in the shell Housing cavity (3) are equipped with, are connected with quirk brick (4) with the housing cavity, the quirk brick offers injection channel, the spray It penetrates channel to be connected to the housing cavity, the position that the injection channel is connected to the housing cavity is provided with air and shouts mouth Component (5) is provided with classification spray gun on the outside of the quirk brick in being provided with central lance (6) in the injection channel (7), the classification spray gun and the central lance are arranged in parallel and the lance outlet of the classification spray gun and the center are sprayed The lance outlet of rifle is arranged in the same direction, offers smoke backflow hole (8) in the lateral wall of the quirk brick, the smoke backflow hole with The housing cavity connection, is provided with the smoke backflow for smoke backflow between the exhaust gases passes and the smoke backflow hole Channel；The classification spray gun is provided with multiple, whole classification spray guns and is arranged at equal intervals on the lateral surface of the road brick；The air shouts mouthpiece position cone structure, and it includes big opening end and osculum end, the sky that the air, which shouts mouthpiece, The big opening end that gas shouts mouthpiece is arranged towards the housing cavity, and the osculum end that the air shouts mouthpiece is logical towards the injection Road setting；The injection channel from its close to the air shout one end of mouthpiece thereto portion extend, the tapered diameter shape in its channel It is the straight pipe of straight tube structure in the end of the Taper Pipe section at there is Taper Pipe section.
- 2. Novel flue gas reflow type low NOx content burner according to claim 1, which is characterized in thatThe housing cavity is cylindrical structure chamber, and the bottom end of the housing cavity is connected to the exhaust gases passes, the shell The top of intracoelomic cavity is connected to the injection channel.
- 3. Novel flue gas reflow type low NOx content burner according to claim 1, which is characterized in thatThe injection channel is cylindrical body through-hole structure, and the central lance is set to the center line axis position of the injection channel On.
- 4. Novel flue gas reflow type low NOx content burner according to any one of claims 1 to 3, feature exist In,The smoke backflow hole offer multiple, whole smoke backflow holes on the lateral surface of the quirk brick at equal intervals Setting.
- 5. Novel flue gas reflow type low NOx content burner according to claim 1, which is characterized in thatIn being provided with air duct butterfly valve on the exhaust gases passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373719.5U CN208205000U (en) | 2017-10-24 | 2017-10-24 | Novel flue gas reflow type low NOx content burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373719.5U CN208205000U (en) | 2017-10-24 | 2017-10-24 | Novel flue gas reflow type low NOx content burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208205000U true CN208205000U (en) | 2018-12-07 |
Family
ID=64489896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721373719.5U Expired - Fee Related CN208205000U (en) | 2017-10-24 | 2017-10-24 | Novel flue gas reflow type low NOx content burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208205000U (en) |
-
2017
- 2017-10-24 CN CN201721373719.5U patent/CN208205000U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 |