CN108613181A - A kind of low NO - Google Patents
A kind of low NO Download PDFInfo
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- CN108613181A CN108613181A CN201810377648.9A CN201810377648A CN108613181A CN 108613181 A CN108613181 A CN 108613181A CN 201810377648 A CN201810377648 A CN 201810377648A CN 108613181 A CN108613181 A CN 108613181A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention relates to low NOs, including：One end of shell, the shell is provided with fuel gas inlet and air intlet, and combuster is arranged in the other end；Level-one Gas Pipe is installed in the shell, and one end is connected to the fuel gas inlet；Second gas burning pipe is installed in the shell, and one end is connected to the level-one Gas Pipe level-one Gas Pipe close to described fuel gas inlet one end, and the other end is arranged towards the combustion chamber；Air classification air deflector is installed in the shell, is formed as air duct between outer wall and the inner walls, and one port is connected to setting with the described one end of level-one Gas Pipe far from the fuel gas inlet, and another port is arranged towards the combustion chamber.Low NO provided by the invention reduces the discharge of nitrogen oxides.
Description
Technical field
The present invention relates to Industrial Boilers and industrial furnace gas burner technical field, are arranged especially with regard to a kind of low NOx
Put gas burner.
Background technology
With wreaking havoc for haze, requirement of the people to air quality and environmental protection is increasingly stringenter, to the clean combustion of fuel
And its hope of pollutant minimum discharge is just increasingly stronger, index request increasingly improves.Nitrogen oxidation caused by fuel gas buring
Object be exactly haze formation the main reason for one of, therefore how to reduce the nitrogen oxides in air become environmental protection there is an urgent need to.
Nitrogen oxides such as NO, NO in air2, N2O3, N2O5Etc. be referred to as NOx, both generally be from the burning of fuel.And
NOx caused by industrial burning device is mainly made of two parts：N in combustion air2The high temperature Nox that oxidation reaction generates
With the fuel Nox from the NO_x formation in fuel；
The generation of fuel Nox：HCN, NH in industrial fuel in (oil, coal, natural gas etc.)3Contained in equal nitride
N is known as fuel bound nitrogen, and the Nox that fuel bound nitrogen is generated in burning is referred to as fuel Nox, and the generation of fuel Nox and the quality of fuel have
It closes.
High temperature Nox is in combustion by the N in combustion air2The product of oxidation reaction at high temperature, it and stove
Bore temperature is related with flame temperature.Due to fire box temperature determined by heat processing technique it is immutable, so burner structure designs
It is to reduce the key factor of high temperature Nox with combustion technology.
Existing common burner is as shown in Figure 1, include shell 2, one end of shell 2 is provided with fuel gas inlet 1 and sky
Combuster 9 is arranged in gas import 4, the other end, and Gas Pipe 11 is equipped in the shell, and 11 one end of Gas Pipe connects with fuel gas inlet
It is logical, the other end and combustion chamber.In use, being passed through combustion gas by fuel gas inlet, air, combustion gas warp are passed through by air intlet
Gas Pipe mixes in the exit of Gas Pipe with the air of entrance, is discharged through combustion chamber, uses the works such as igniter in the process
Have mixed gas of igniting to can be used.
The burner nitrogen oxide emission of this structure is larger, cannot meet the requirement of people, therefore, the knot of burner
Structure and combustion technology are improved extremely urgent.
Invention content
Therefore, the purpose of the present invention is to provide a kind of low NOs, to reduce the discharge of nitrogen oxides.
The technical scheme is that：A kind of low NO, including shell, one end of the shell be provided with combustion gas into
Mouth and air intlet, the other end are arranged combuster, level-one Gas Pipe, level-one Gas Pipe one end are equipped in the shell
It is connected to the fuel gas inlet, the level-one Gas Pipe other end is connected with air classification air deflector, the air classification water conservancy diversion
Device it is inside and outside respectively with the combustion chamber；The air intlet respectively with the inside of the air classification air deflector and
Outside connection；Second gas burning pipe, second gas burning pipe one end and the level-one Gas Pipe are fixed in the level-one Gas Pipe
Connection, the other end and the combustion chamber.
Optionally, the air classification air deflector includes level-one diversion pipe, two level diversion pipe, three-level diversion pipe and eddy flow
Piece, the level-one diversion pipe, two level diversion pipe, three-level diversion pipe and spinning disk are sequentially connected and are integrated, and internal connection, institute
The one end of level-one diversion pipe far from two level diversion pipe is stated to be provided with combustion gas through-hole and main air through-hole and connect level-one Gas Pipe,
The axis of the main air through-hole has angle, the combustion gas through-hole to be connected to level-one Gas Pipe with the axis of the air deflector,
It is connected to inside one end of the outlet of the spinning disk and three-level diversion pipe, the other end and the combustion chamber；The level-one is led
Flow tube is provided with inclined first inclined-plane inwardly, and the two level water conservancy diversion tube outer surface is provided with outward inclined second tiltedly
Face, first inclined-plane are connected with second inclined-plane, are provided with secondary air through-hole at the top of second inclined-plane, and described two
The axis of the axis and the air deflector of grade air hole has angle, is provided on the inside of the two level diversion pipe and tilts inwardly
Third inclined-plane, the outer surface of the three-level diversion pipe is provided with the 4th inclined-plane, second diversion pipe and the 4th inclined-plane
The bottom of connection, the 4th inclined-plane is provided with three-level air hole, axis and the air deflector of the three-level air hole
Axis have angle, inclined 5th inclined surface, the spinning disk inwardly are provided on the inside of the three-level diversion pipe and is gone out
Mouth is connect with the 5th inclined surface；The outer edge of the spinning disk is provided with the second through-hole with combustion chamber.
Optionally, the air classification air deflector includes hollow cylinder and spinning disk, the hollow cylinder with it is described
Spinning disk connects, and the level-one Gas Pipe connect with the hollow cylinder and is connected to hollow inner barrel, the eddy flow
One end of the outlet of piece is connected to hollow inner barrel, the other end and the combustion chamber；It is set on the hollow cylinder
It is equipped with the first through hole being connected to hollow inner barrel, the outer edge of the spinning disk is circumferentially provided with and combustion chamber
Second through-hole；The air intlet is connected to by first through hole with the inner barrel；And pass through the second through-hole and the combustion
Burn room connection.
Optionally, the shell is hollow, and the air classification air deflector includes hollow cylinder and spinning disk, described
Hollow cylinder is connect with the spinning disk, the level-one Gas Pipe connect with the hollow cylinder and in hollow cylinder
Portion is connected to, and one end of the outlet of the spinning disk is connected to hollow inner barrel, the other end and the combustion chamber；It is described
The first through hole being connected to hollow inner barrel, the outer edge of the spinning disk and the shell are provided on hollow cylinder
Between have spacing；The air intlet is connected to by first through hole with the inner barrel；And by the spacing with it is described
Combustion chamber.
Optionally, the hollow cylinder is provided with protrusion in circumferencial direction；The first through hole is multiple, wherein one
Part first through hole is located at the side of the raised face fuel gas inlet, and has angle, another portion with the axis of the cylinder
Divide and is located on the joint face that the hollow cylinder is connect with the level-one Gas Pipe；The hollow cylinder is fired with the level-one
Tracheae is coaxial.
Optionally, the level-one Gas Pipe extends in the hollow cylinder, and fuel gas hole is provided on side wall.
Optionally, combuster is set between the combustion chamber and the spinning disk.
Optionally, the combustion chamber is surrounded by barrel-type casing and hollow truncated cone-shaped shell, the barrel-type casing, hollow
What truncated cone-shaped shell and combustion chamber were integrated, the internal diameter of the barrel-type casing is more than the internal diameter of the combustion chamber；It is described hollow
The larger bottom surface of truncated cone-shaped housing area is connect with barrel-type casing, the hollow truncated cone-shaped housing area smaller bottom surface and combustion
Burn room connection.
Optionally, igniter is installed on the shell；The firing tip of the igniter is located in the hollow cylinder.
Optionally, the firing tip of the igniter is located at the side of the close level-one Gas Pipe of the cylinder.
Low NO provided by the invention, operation principle are passed through combustion gas by fuel gas inlet, are passed through by air intlet
Air, combustion gas is entered by level-one Gas Pipe inside air classification air deflector, and after air enters enclosure interior, a part enters empty
The inside of qi leel grade air deflector and combustion gas mixing, another part reach air classification water conservancy diversion by the external of air classification air deflector
The outlet port of device, mixed gas of igniting in the process, at this point, burning is divided to two processes：Process 1：Air classification air deflector
Internal mixed gas is burnt under the conditions of anoxic, fuel-rich combustion, reduces burning velocity and temperature.Therefore, not only postpone
Combustion process, and the reactivity for generating NOx is reduced in reducing atmosphere, it is suppressed that NOx is in this aflame life
Cheng Liang；Process 2：Burn in process 1 generation flue gas reach air classification air deflector outlet port after, with above-mentioned another portion
Divide air mixing, to fully burning again, the formation flame at combustion chamber under the environment of oxygen abundance.It, will in the application
Air into shell is divided into two parts and reduces ignition temperature by anoxycausis in process 1 with combustion gas mixing respectively,
To reduce the generation of nitrogen oxides；In the whole process, N2 in the high-temperature region residence time mainly in process 2, to subtract
N2 is lacked in the high-temperature region residence time of whole process, the generation of nitrogen oxides has been further reduced, to reduce nitrogen oxidation
The discharge of object.
Description of the drawings
Fig. 1 shows a kind of structural schematic diagram of existing low NO；
Fig. 2 shows a kind of structural schematic diagrams of low NO provided by the invention；
Fig. 3 shows a kind of internal structure schematic diagram of low NO provided by the invention；
Fig. 4 is enlarged drawings of the Fig. 3 at A；
Fig. 5 is a kind of schematic view of the mounting position of igniter；
Fig. 6 shows the structural scheme of mechanism of air classification air deflector in a kind of low NO provided by the invention；
Fig. 7 is a kind of axially mounted structural schematic diagram of support construction of the present invention；
Fig. 8 is a kind of side mounting structure schematic diagram of support construction of the present invention；
Wherein, fuel gas inlet -1；Level-one Gas Pipe -11；Second gas burning pipe -111；Air classification air deflector -12；Cylinder-
121；Spinning disk -122；First through hole -123；Second through-hole -124；Protrusion -125；The outlet -126 of spinning disk；Fuel gas hole-
127；First strut -13；Second strut -14；Head rod -15；Second connecting rod -16；Third connecting rod -17；4th connects
Extension bar -18；Connecting plate -19；Shell -2；Air intlet -4；Igniter -8；Combustion chamber -7.
Specific implementation mode
Technical scheme of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment 1
The present invention provides a kind of low NOs, and referring to Fig. 2-Fig. 4, including shell 2, one end of the shell is provided with
Combuster 7 is arranged in fuel gas inlet 1 and air intlet 4, the other end, is equipped with level-one Gas Pipe 11 in the shell, and described one
Grade Gas Pipe one end is connected to the fuel gas inlet, and the level-one Gas Pipe other end is connected with air classification air deflector 12, institute
State air classification air deflector it is inside and outside respectively with the combustion chamber；The air intlet respectively with the air classification
The inside and outside connection of air deflector.
Low NO provided by the invention, operation principle are passed through combustion gas by fuel gas inlet, are passed through by air intlet
Air, combustion gas is entered by level-one Gas Pipe inside air classification air deflector, and after air enters enclosure interior, a part enters empty
The inside of qi leel grade air deflector and combustion gas mixing, another part reach air classification water conservancy diversion by the external of air classification air deflector
The outlet port of device, mixed gas of igniting in the process, at this point, burning is divided to two processes：Process 1：Air classification air deflector
Internal mixed gas is burnt under the conditions of the fuel-rich combustion of anoxic, reduces burning velocity and temperature.Therefore, not only postpone
Combustion process, and the reactivity for generating NOx is reduced in reducing atmosphere, it is suppressed that NOx is in this aflame life
Cheng Liang；Process 2：Burn in process 1 generation flue gas reach air classification air deflector outlet port after, with above-mentioned another portion
Divide air mixing, to fully burning again, the formation flame at combustion chamber under the environment of oxygen abundance.It, will in the application
Air into shell is divided into two parts and reduces ignition temperature by anoxycausis in process 1 with combustion gas mixing respectively,
To reduce the generation of nitrogen oxides；In the whole process, N2 in the high-temperature region residence time mainly in process 2, to subtract
Lack N2 in the high-temperature region residence time of whole process, further reduced the generation of nitrogen oxides, in addition, in process 1, root
According to thermal expansion and contraction principle, the mixed gas inside air classification air deflector burn under the conditions of the fuel-rich combustion of anoxic generate
Heat is relatively small, and gas expansion is smaller, therefore the N2 pressure in air is smaller, to further reduced the life of nitrogen oxides
At.
Second gas burning pipe 111, second gas burning pipe one end and the level-one Gas Pipe are fixed in level-one Gas Pipe
Connection, the other end and the combustion chamber.This structure, when combustion gas classification and air classification can be mixed and burned, into
One step reduces the generation of NOx, it is often more important that, in process 2, combustion gas and the cigarette in process 1 out that second gas burning pipe comes out
Gas being capable of secondary response again, that is, in burning in process 1 generated NO encounter hydrocarbon root CHi and imperfect combustion product CO, H2, C and
When CnHm, it may occur that the reduction reaction of NO, reaction equation are：
4NO+CH4=2N2+CO2+2H2O
2NO+2CnHm+ (2n+m/2-1) O2=N2+2nCO2+mH2O
2NO+2CO=N2+2CO2
2NO+2C=N2+2CO
2NO+2H2=N2+2H2O
According to this principle, the discharge capacity of NOx can be further reduced.
It is the central principle of the application below：Ignition temperature is higher, and the concentration of oxygen is higher in combustion zone, in high-temperature area
The interior combustion gasification residence time is longer, and the NOx of generation is more.Low Nox emissions combustions and burner pass through fractional combustion skill
Art realizes the combustion with meagre oxygen of combustion zone and reduces ignition temperature, and reduces the residence time, and then inhibits the generation of Nox；Meanwhile
By means of external control technology and flue gas recirculation technology, further reach the target for reducing Nox discharges.
1, air staged combustion technology
In the first stage, the air capacity that burner hearth one (in i.e. hollow cylinder) will be fed from main burner is reduced, and is generally subtracted
The 70-75% (be equivalent to theoretical air requirement 80%) for arriving total combustion air amount less makes fuel first in the fuel-rich combustion of anoxic
Under the conditions of burn.Excess air coefficient α ＜ 1 in the area of first-stage burning at this time, thus reduce the burning velocity in combustion zone and
Temperature.Therefore, combustion process is not only delayed, and reduces the reactivity for generating NOx in reducing atmosphere, it is suppressed that
NOx is in this aflame production quantity.
In order to complete whole combustion processes, the remaining air needed for completely burned is then by being arranged in outside main burner
Air baffle be sent into burner hearth two (i.e. in combustion chamber), with first-stage burning area under the conditions of " combustion with meagre oxygen " generated flue gas
Whole combustion processes are completed in mixing under conditions of α ＞ 1.In addition, this method compensates for simple low excess air burning
Disadvantage.Excess air coefficient in first-stage burning area is smaller, inhibits the generation effect of NOx better.
2, fuel-staged combustion technology
When generated NO encounters hydrocarbon root CHi and imperfect combustion product CO, H2, C and CnHm in burning, it may occur that NO
Reduction reaction, reaction equation is：
4NO+CH4=2N2+CO2+2H2O
2NO+2CnHm+ (2n+m/2-1) O2=N2+2nCO2+mH2O
2NO+2CO=N2+2CO2
2NO+2C=N2+2CO
2NO+2H2=N2+2H2O
Using this principle, fuel (being typically chosen 80-85%) is sent into first-stage burning area (in hollow cylinder),
α>Under the conditions of 1, burns and generate NOx.The fuel for being sent into single-stage combustion area is known as primary fuel, remaining fuel (15-20%)
It then is sent into secondary combustion zone on the top of main burner, in α<Very strong reducing atmosphere is formed under conditions of 1 so that in level-one
The NOx generated in combustion zone is reduced into nitrogen molecular in secondary combustion zone, and secondary combustion zone is also known as reburning zone, is sent into two level combustion
The fuel for burning area is also known as secondary fuel or reburning fuel.Not only make that generated NOx is restored in reburning zone,
The generation of new NOx is further suppressed, the concentration of emission of NOx can be made to further decrease.In general, can be made using fuel staging
The concentration of emission of Nox reduces by 50% or more.Arrangement " fiery windward " spout is also needed in the upper surface of reburning zone, forms third level combustion zone
(burning-out zone), to ensure the after-flame of the imperfect combustion product generated in reburning zone.This combustion method again is also known as fuel staging
Burning.
3, low excess air burns
Low excess air burning is that combustion process carries out under conditions of close to theoretical air requirement as far as possible, in flue gas
The reduction of excess of oxygen can inhibit the generation of NOx.This is a kind of simplest method for reducing NOx emission.It can generally reduce
NOx emission 15-20%.
4, flue gas combustion technology again
Experience have shown that flue gas again combustion rate be 15-20% when, NOx emission concentration can reduce by 25% or so.The drop of NOx
Low rate with flue gas again the increase of combustion rate and increase.And it is related with fuel type and ignition temperature.Ignition temperature is higher,
Influence of the combustion rate to NOx reduction rate is bigger again for flue gas.
5, low-NOx combustor
Gas burner is the key equipment in industrial furnace and combustion of industrial boiler system.Not only combustion gas is to pass through burning
Device is sent into burner hearth, and the air needed for fuel gas buring is also to enter burner hearth by burner.From the point of view of burning, burning
The performance of device plays main function to the reliability and economy of fuel gas combustion system.In terms of the formation mechanism of NOx, it is exhausted to account for NOx
Most high temperature NOx was generated in the combustion gas stage of catching fire, therefore, by the burner structure of special designing and by changing
Become the air-fuel ratio of burner, air classification above-mentioned, fuel staging and flue gas can burn again reduces the big of NOx concentration
Batch is used for burner, and to reduce the concentration of ignition zone oxygen as much as possible, and the temperature for suitably reducing ignition zone reaches maximum limit
Degree ground inhibits the purpose that NOx is generated, and here it is low-NOx combustors.
Air classification air deflector can use existing air classification air deflector, and in the application, applicant is to air classification
Air deflector has also done further design, and referring to Fig. 2-Fig. 4, the air classification air deflector includes hollow cylinder 121 and eddy flow
Piece 122, the hollow cylinder are connect with the spinning disk, and the level-one Gas Pipe is connect and with the hollow cylinder in
Empty inner barrel connection, one end of the outlet 126 of the spinning disk are connected to hollow inner barrel, the other end and the combustion
Burn room connection；The first through hole 123 being connected to hollow inner barrel is provided on the hollow cylinder, in order to air point
Stream enters hollow inner barrel, and the outer edge of the spinning disk is circumferentially provided with the second through-hole 124 with combustion chamber, with
It is mixed by and with flue gas that hollow inner barrel burning generates convenient for the air outside hollow cylinder, the second through-hole is general
It is set as semicircle, the outer edge of cyclone can be directly fixedly connected with the inward flange of shell by when making, only pass through second
Through-hole and the combustion chamber, this structure can fix air classification water conservancy diversion by spinning disk in one end close to combustion chamber
Device resists the impact that air-flow and anoxycausis generate air classification air deflector；The air intlet by first through hole with
The inner barrel connection；And by the second through-hole and the combustion chamber, this is simple in structure, practical.In the application, in
Empty inner barrel space preferably accounts between the 1/5-2/5 in enclosure interior space, and first through hole is uniformly arranged on hollow cylinder
On, account between the 1/8-1/5 of hollow drum surface product, as deforming in one, air intlet can also by pipe with it is hollow
Inner barrel and combustion chamber.
As a preferred mode, the hollow cylinder is provided with protrusion 125 in circumferencial direction；The first through hole
Be multiple, wherein a part of first through hole is located at the side of the raised face fuel gas inlet, and with the axis of the cylinder
There is angle, enables air to be tilted into, the combustion gas cross-mixing that level-one Gas Pipe enters is conducive to improve mixing efficiency,
Prevent that combustion gas from mixing with air to a certain extent it is uneven caused by part fully burning and the generation conducive to NOx, angle one
As between 30-70 degree, another part is located on the joint face that the hollow cylinder is connect with the level-one Gas Pipe；It is described
Hollow cylinder and the level-one Gas Pipe are coaxial.This structure, in process 1, portion of air is through first on joint face
Through-hole enters in hollow cylinder, burns with the combustion gas mixing entered through level-one Gas Pipe in hollow cylinder, generates flue gas simultaneously
Continue to move ahead, another part air is mixed into hollow cylinder with the flue gas of process through the first through hole in protrusion to be fired again
It burns, this mode, hollow inner barrel can be made to burn and be classified, previous stage more has than rear stage excess air coefficient α smallers
Conducive to the reactivity for generating NOx is reduced, inhibit NOx in this aflame production quantity.Protrusion is in the axial direction of hollow cylinder
It can be arranged to multilayer, to be formed in multistage combustion in hollow cylinder, further decrease the reactivity for generating NOx, inhibit NOx
Only schematically protrusion is divided into two layers in this aflame production quantity, Fig. 1.As a preferred mode, join
See that Fig. 3 and Fig. 4, the level-one Gas Pipe are extended in the hollow cylinder, fuel gas hole 127 is provided on side wall, in this way, combustion
The outgassing direction of stomata is almost vertical with the direction for entering air entrance in hollow cylinder through the first through hole on joint face, more
Be conducive to combustion gas uniformly to mix with the air at this.In Fig. 3 and Fig. 4, " → " schematically indicates the flow direction of combustion gas,The schematical flow direction for indicating air；
As a kind of deformation referring to Fig. 6, the air classification air deflector includes level-one diversion pipe 210, two level diversion pipe
211, three-level diversion pipe 212 and spinning disk 122, the level-one diversion pipe, two level diversion pipe, three-level diversion pipe and spinning disk are successively
Be connected as one, and internal connection, the described one end of level-one diversion pipe far from two level diversion pipe be provided with combustion gas through-hole 213 and
Main air through-hole 214 simultaneously connects level-one Gas Pipe, and the axis of the main air through-hole has folder with the axis of the air deflector
Angle α makes the center line of air and combustion gas approach axis have and intersects, in order to the sky of entrance in order to which the air entered to be oriented to
Gas and combustion gas mixing, the combustion gas through-hole are connected to level-one Gas Pipe, one end and the three-level water conservancy diversion of the outlet 126 of the spinning disk
Connection inside pipe, the other end and the combustion chamber；The level-one diversion pipe is provided with inclined first inclined-plane inwardly
215, the two level water conservancy diversion tube outer surface is provided with inclined second inclined-plane 216 outward, first inclined-plane and described second
Inclined-plane connects, and is provided with secondary air through-hole 217 at the top of second inclined-plane, the axis of the secondary air through-hole with it is described
The axis of air deflector has angle, which is being conducive to the base into the air and combustion gas mixing of two level diversion pipe more preferably greater than α
On plinth, shortens the length of two level diversion pipe as possible, inclined third inclined-plane inwardly is provided on the inside of the two level diversion pipe
218, the outer surface of the three-level diversion pipe is provided with the 4th inclined-plane 219, the axis of the vertical line and the air deflector on the 4th inclined-plane
There are angle β, β to be generally higher than α, second diversion pipe is connect with the 4th inclined-plane, and the bottom on the 4th inclined-plane is provided with
Three-level air hole 230, the axis of the three-level air hole and the axis of the air deflector have angle, the angle more preferably greater than
α is provided with inclined 5th inclined surface 231 inwardly, the outlet of the spinning disk and the 5th on the inside of the three-level diversion pipe
Inclined surface connects；The outer edge of the spinning disk is provided with the second through-hole 124 with combustion chamber.This structure, in air
Three-level mixing is formed in stepped diversion device, in process 1, portion of air enters level-one diversion pipe through main air through-hole 214
It is interior to burn with the combustion gas mixing entered, it generates flue gas and continues to move ahead, after flue gas enters two level diversion pipe, secondary air through-hole
217 enter portion of air is further mixed and burned with it, generates secondary flue gas, secondary flue gas proceeds into three-level water conservancy diversion
Guan Hou, three-level air hole 230 enter portion of air and are further mixed and burned with it, outlet of the gas through spinning disk after burning
The air to come into combustion chamber with the second through-hole is discharged after being mixed and burned through combustion chamber, and this mode can make air classification
Air deflector internal-combustion is divided into three-level, and for previous stage than rear stage excess air coefficient α smallers, being more advantageous to reduces generation NOx's
Reactivity inhibits NOx in this aflame production quantity.In addition, 230 position of secondary air through-hole 217 and three-level air hole
Be set as the alternate mode in upper and lower part, be tilted into conjunction with main air through-hole, and combustion gas mixing, at different angles
Degree and direction impact combustion gas or smog, make mixing efficiency faster.First inclined-plane 215 and third inclined-plane 218 have guiding poly- in air-flow
Hold together effect, mixed with the air of entrance when gas diffusion when making to enter next stage behind junction, is more advantageous to the mixed of gas
It closes.
In order to facilitate igniting, referring to Fig. 5, igniter 8 is also equipped on the shell；The firing tip of the igniter
In the hollow cylinder, as a preferred mode, the firing tip of the igniter is located at the close of the cylinder
The side of the level-one Gas Pipe, is more advantageous to combustion gas fractional combustion in this way.Firing tip described herein, the as point of igniter
Fiery position, for example, gas ignitor outlet port.The installation of igniter is well known to those skilled in the art, is no longer gone to live in the household of one's in-laws on getting married herein
It states.
It is abundant in order to facilitate the smoke combustion in process 2, combuster is set between the combustion chamber and the spinning disk
7, i.e., combustion space is reserved between combustion chamber and the spinning disk in order to which flue gas and air fully burn after evenly mixing.Specifically
, the combustion chamber is surrounded by barrel-type casing 71 and hollow truncated cone-shaped shell 72, the barrel-type casing, hollow truncated cone-shaped shell
What body and combustion chamber were integrated, the internal diameter of the barrel-type casing is more than the internal diameter of the combustion chamber；The hollow truncated cone-shaped shell
The larger bottom surface of bulk area is connect with barrel-type casing, and the smaller bottom surface of the hollow truncated cone-shaped housing area connects with combustion chamber
It connects, this structure, air is after the second through-hole, and inside side diffusion, moves ahead, on one side by the medial surface of truncated cone-shaped shell on one side
When, it limits, is spread inwardly forward on the inside of round estrade, the flue gas one that spinning disk exports out through round estrade medial surface shape
Side moves ahead, and outside side diffusion, is especially arrived at the smaller bottom surface of truncated cone-shaped housing area, inside and outside intertexture, mixing is evenly on one side.
Embodiment 2
Be not provided with the second through-hole in the present embodiment, on spinning disk, when installation, the outer edge of spinning disk and the shell it
Between have spacing, in order to which air flows through, i.e.,：The shell is hollow, and the air classification air deflector includes hollow cylinder
And spinning disk, the hollow cylinder are connect with the spinning disk, the level-one Gas Pipe is connect simultaneously with the hollow cylinder
Be connected to hollow inner barrel, one end of the outlet of the spinning disk is connected to hollow inner barrel, the other end with it is described
Combustion chamber；The first through hole being connected to hollow inner barrel is provided on the hollow cylinder, the spinning disk
There is spacing between outer edge and the shell；The air intlet is connected to by first through hole with the inner barrel；And lead to
Cross the spacing and the combustion chamber.The structural gap directly can be by the outer edge of spinning disk, and the gas flowed through is more equal
It is even, it is more advantageous to and is mixed with the flue gas in process 1, this structure leads air classification to resist air-flow and anoxycausis
The impact that device generates is flowed, support construction is installed on hollow cylinder, referring to Fig. 7 and Fig. 8, support construction is traditionally arranged to be multiple
4 are diagrammatically illustrated in Fig. 6, the support construction includes multiple supporters, diagrammatically illustrates 2 in Fig. 7, multiple described
Supporter is arranged in an axially parallel mode, and the supporter includes circumferentially fixed the first strut between hollow cylinder and barrel-type casing
13 and second strut 14, head rod 15, the second connecting rod 16, third are provided between first strut and the second strut
Connecting rod 17 and the 4th connecting rod 18, the head rod and the third connecting rod are fixed on first strut, institute
It states the second connecting rod and the 4th connecting rod is fixed on the second strut；The head rod, the second connecting rod, third connecting rod
And the 4th be fixedly connected with connecting plate 19, the extended line of the extended line and third connecting rod of the head rod between connecting rod
Intersection, the extended line of second connecting rod and the extended line intersection of the 4th connecting rod；First between adjacent supporter
It is provided with head rod, the second connecting rod, third connecting rod and the 4th connecting rod between bar, the head rod and described
Third connecting rod is fixed on one of them first strut, second connecting rod and the 4th connecting rod be fixed on another first
On strut；It is fixedly connected with connecting plate between the head rod, the second connecting rod, third connecting rod and the 4th connecting rod,
The extended line of the head rod intersects with the extended line of third connecting rod, and the extended line of second connecting rod and the 4th connects
The extended line of extension bar intersects；Head rod, the second connecting rod, are provided between the second strut between adjacent supporter
Three connecting rods and the 4th connecting rod, the head rod and the third connecting rod are fixed on one of them second strut,
Second connecting rod and the 4th connecting rod are fixed on another second strut；The head rod, the second connecting rod,
Connecting plate, extended line and the third connecting rod of the head rod are fixedly connected between three connecting rods and the 4th connecting rod
Extended line intersects, the extended line of second connecting rod and the extended line intersection of the 4th connecting rod.It should be noted that in order to match
Close hull shape, camber or straight can be arranged in head rod, the second connecting rod, third connecting rod and the 4th connecting rod.
This structure, the first connecting rod and second connecting rod of supporter, coordinates the shape of hollow cylinder and barrel-type casing, in first connecting rod
Two arch supports are formed with the both ends of second connecting rod, air-flow and anoxycausis is resisted and air classification is being led perpendicular to axial direction
Flow the impact that device generates, head rod 15,18 mating connection plate of the second connecting rod 16, third connecting rod 17 and the 4th connecting rod
It is mutually restricted circumferential, in air-flow and anoxycausis when circumferentially generating power, pulling force or thrust can be generated, to resist gas
Stream and anoxycausis are in the impact circumferentially generated.Similarly, it is provided with first between the first strut between adjacent supporter
Connecting rod, the second connecting rod, third connecting rod and the 4th connecting rod mating connection plate can resist air-flow and anoxycausis exists
The impact generated in axial direction.Certainly, head rod, the second connecting rod, third connecting rod can also be set between support construction
With the structure of the 4th connecting rod mating connection plate, to form the mutual cooperation for resisting the impact that air-flow and anoxycausis generate
Structure, effect are more preferable.
It is exactly that the second through-hole had both been set on spinning disk, when installation, between having between the outer edge of spinning disk and the shell
Away from.
Above-described embodiment is the illustration invented, and it is special should not to describe limitation with the exemplary embodiments of specification and attached drawing
The protection domain of economic rights.
The preferred embodiments of the disclosure and embodiment are explained in detail above in conjunction with attached drawing, but it is of the invention
The above-described embodiment and examples are not limited to, within the knowledge of those skilled in the art, can also not taken off
Various changes can be made under the premise of from present inventive concept.In the claims, should not will between bracket it is any with reference to symbol
Number be used as limitations on claims.Word "comprising" does not exclude the presence of element or step not listed in the claims.
Claims (8)
1. a kind of low NO, which is characterized in that including：
One end of shell (2), the shell (2) is provided with fuel gas inlet (1) and air intlet (4), and the other end is set as combustion chamber
(7)；
Level-one Gas Pipe (11) is installed in the shell (2), and one end is connected to the fuel gas inlet (1)；
Second gas burning pipe (111) is installed in the shell (2), one end and the level-one Gas Pipe level-one Gas Pipe (11))
It is connected to close to the fuel gas inlet (1) one end, the other end is towards the combustion chamber (7)；
Air classification air deflector (12) is installed in the shell (2), is formed as between outer wall and the shell (2) inner wall
Air duct, one port are connected to setting, the other end with the one end of the level-one Gas Pipe (11) far from the fuel gas inlet (1)
Mouth is arranged towards the combustion chamber (7).
2. low NO according to claim 1, which is characterized in that the air classification air deflector includes hollow cylinder
Body (121) and spinning disk (122), the hollow cylinder (121) are connect with the spinning disk (122), the level-one Gas Pipe
(11) it connect with the hollow cylinder (121) and is connected to hollow inner barrel, the outlet of the spinning disk (122)
(126) it is connected to inside one end and hollow cylinder (121), the other end is connected to the combustion chamber (7)；
It is provided with the first through hole (123) being connected to hollow inner barrel, the spinning disk on the hollow cylinder (121)
(122) outer edge is circumferentially provided with the second through-hole (124) being connected to combustion chamber (7)；
The air intlet (4) inside first through hole (123) and the cylinder (121) by being connected to；And pass through the second through-hole
(124) it is connected to the combustion chamber (7).
3. low NO according to claim 2, which is characterized in that the hollow cylinder (121) is in circumferencial direction
It is provided with raised (125)；The first through hole (123) is multiple, wherein a part of first through hole (123) is located at the protrusion
(125) side of face fuel gas inlet (1), and have an angle with the axis of the cylinder (121), another part be located at it is described in
On the joint face that empty cylinder (121) is connect with the level-one Gas Pipe (11)；The hollow cylinder (121) and the level-one
Gas Pipe (11) is coaxial.
4. low NO according to claim 3, which is characterized in that the level-one Gas Pipe (11) extend to it is described in
In empty cylinder (121), fuel gas hole (127) is provided on side wall.
5. low NO according to claim 1, which is characterized in that the air classification air deflector (12) includes level-one
Diversion pipe (210), two level diversion pipe (211), three-level diversion pipe (212) and spinning disk (122), the level-one diversion pipe (210),
Two level diversion pipe (211), three-level diversion pipe (212) and spinning disk (122) are sequentially connected and are integrated, and internal connection, described
The one end of level-one diversion pipe (210) far from two level diversion pipe (211) is provided with combustion gas through-hole (213) and main air through-hole
(214) and level-one Gas Pipe (11) is connected, the axis of the main air through-hole (214) has folder with the axis of the air deflector
Angle, the combustion gas through-hole (213) are connected to level-one Gas Pipe (11), one end and three of the outlet (126) of the spinning disk (122)
Connection, the other end are connected to the combustion chamber (7) inside grade diversion pipe (212)；The level-one diversion pipe (210) is provided with inwardly
Inclined first inclined-plane (215) in side, two level diversion pipe (211) outer surface are provided with inclined second inclined-plane outward
(216), first inclined-plane (215) and second inclined-plane (216) connect, and are provided at the top of second inclined-plane (216)
Secondary air through-hole (217), the axis of the secondary air through-hole (217) and the axis of the air deflector have an angle, and described two
It is provided with inclined third inclined-plane (218) inwardly, the appearance of the three-level diversion pipe (212) on the inside of grade diversion pipe (211)
Face is provided with the 4th inclined-plane (219), and the two level diversion pipe (211) connect with the 4th inclined-plane (219), the 4th inclined-plane
(219) bottom is provided with three-level air hole (230), axis and the air deflector of three-level air (230) through-hole
Axis has angle, and inclined 5th inclined surface (231) inwardly, the rotation are provided on the inside of the three-level diversion pipe (212)
The outlet of flow (122) is connect with the 5th inclined surface (231)；The outer edge of the spinning disk (122) is provided with and combustion chamber (7)
The second through-hole (124) of connection.
6. low NO according to claim 1, which is characterized in that the combustion chamber (7) by barrel-type casing (71) and
Hollow truncated cone-shaped shell (72) surrounds, and the barrel-type casing (71), hollow truncated cone-shaped shell (72) are wholely set, the sky
The bottom surface that truncated cone-shaped shell (72) area of the heart is larger is connect with barrel-type casing (71), described hollow truncated cone-shaped shell (72) face
The smaller bottom surface of product is connect with combustion chamber (7).
7. low NO according to claim 2, which is characterized in that be equipped with igniter (8) on the shell (2)；
The firing tip of the igniter (8) is located in the hollow cylinder.
8. low NO according to claim 7, which is characterized in that the firing tip of the igniter (8) is located at described
The side of the close level-one Gas Pipe (11) of cylinder (121).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403677.6A CN114110580A (en) | 2018-04-25 | 2018-04-25 | Low-nitrogen combustor |
| CN201810377648.9A CN108613181A (en) | 2018-04-25 | 2018-04-25 | A kind of low NO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810377648.9A CN108613181A (en) | 2018-04-25 | 2018-04-25 | A kind of low NO |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111403677.6A Division CN114110580A (en) | 2018-04-25 | 2018-04-25 | Low-nitrogen combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108613181A true CN108613181A (en) | 2018-10-02 |
Family
ID=63660759
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810377648.9A Pending CN108613181A (en) | 2018-04-25 | 2018-04-25 | A kind of low NO |
| CN202111403677.6A Pending CN114110580A (en) | 2018-04-25 | 2018-04-25 | Low-nitrogen combustor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111403677.6A Pending CN114110580A (en) | 2018-04-25 | 2018-04-25 | Low-nitrogen combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108613181A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654488A (en) * | 2018-11-27 | 2019-04-19 | 乔永 | A kind of combustion gas diffusion type low NO |
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|---|---|
| CN114110580A (en) | 2022-03-01 |
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Application publication date: 20181002 |