CN207006149U - Ultralow nitrogen neat gas burner - Google Patents
Ultralow nitrogen neat gas burner Download PDFInfo
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- CN207006149U CN207006149U CN201720709433.3U CN201720709433U CN207006149U CN 207006149 U CN207006149 U CN 207006149U CN 201720709433 U CN201720709433 U CN 201720709433U CN 207006149 U CN207006149 U CN 207006149U
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Abstract
The utility model discloses ultralow nitrogen neat gas burner, including neat gas burner main body, described neat gas burner main body is mainly made up of gas spraying device of air and air-intake device, and gas spraying device of air is located at the center of burner body, the air-intake device tail end offers an air channel and secondary air duct respectively, one time air channel is located on neat gas burner main center line, and the air channel rear end is provided with fire retardant mixer and cyclone.In the utility model, the utility model is provided with an air channel and secondary air duct first, and the oxygen conten analyser being respectively provided with an air channel and secondary air duct, automatically adjust the flue gas recirculation amount of two passages, by combustion air Control for Oxygen Content 16% 18%, the combustion-supporting oxygen amount that the passage provides accounts for the 40% of total amount and act as ensureing that mixing part of smoke while the stability of natural gas root-burn reduces NOx generation in a wherein air channel.
Description
Technical field
It the utility model is related to backflow flue gas low-NO_x combustion technology field, more particularly to ultralow nitrogen neat gas burner.
Background technology
Research and management experience show both at home and abroad, and control area property PM2.5 pollutions are the very big system works of a difficulty
Journey, it is necessary on the basis of comprehensive analysis, propose targetedly control way, could effectively alleviate region PM2.5 pollutions.
PM2.5 includes primary emission and secondary generation particle two parts, and by taking Beijing as an example, offspring ratio is higher, particularly heavy dirt
The offspring ratio more conventional period substantially increases in dye period PM2.5.There are observation as shown by data, PM2.5 when heavily contaminated occurs
The feature that strong correlation is presented, synchronously changes with NOx environmental quality change in concentration.NOx is PM2.5 important as precursors thing, in shape
There are two effects during：First, the NO3- of reaction generation is the important chemical constituent of offspring；Second, pass through photodissociation chain
Formula reaction generation O3, increases oxidizing capacity, there is provided SOx, NOX oxidation are generated to SO42- and NO3- oxidant.California, USA
Influences of the NOx of primary emission to PM2.5 is cut down using CAMQ modelings, result is that 1 ton of NOx emission of every reduction can be reduced about
0.13 ton of PM2.5.Beijing current research result shows that offspring is current PM2.5 significant contributor, and is had than 2000
Obvious to rise, main component is water soluble ion（Account for 53%）, crustal elements（Account for 22%）, organic matter（Account for 20%）And elemental carbon（Account for
3%）, other unknown elements account for 2%, and increase trend is presented in NO3-/SO42- proportionate relationships.In water soluble ion with SO42-,
Based on NO3- and NH4+, three's sum（SNA）The contribution of concentration for accounting for PM2.5 average nearly 50%, the SNA of ratio is to cause PM2.5 dirty
The main reason for dye.Therefore, it is to improve one of vital task of quality of air environment, existing low NOx combustion skill to reduce NOx emission
Art reduces what thermal NO x generations were carried out, major technique includes fractional combustion, premix mainly around how to reduce ignition temperature
Surface combustion, flue gas recirculation, porous media catalysis burning and flameless combustion, the reduction of ignition temperature can be by flame zone
Domain adds flue gas to realize, the flue gas of addition absorbs heat so as to reduce ignition temperature.By the way that the combustion product of flue gas is added to
In combustion zone, ignition temperature is not only reduced, reduces NOx generations；The flue gas added simultaneously reduces the partial pressure of oxygen, this
The process of oxygen and nitrogen generation thermal NO x will be weakened, so as to reduce NOx generation.According to the difference of application principle, flue gas
Recycling has two kinds of application modes, is respectively that outside flue gas recirculation recycles with inside smoke, for outside flue gas recirculation
For technology, flue gas, by an external pipe, is rejoined in burner hearth from the outlet of boiler.According to R kke etc. research,
Outside flue gas recirculation can reduce by 70% NOx generations.Outer circulation ratio also has considerable influence to NOx control effects, with outer
The increase NOx reduction amplitude of circulation ratio is also more obvious.
But as the increasing of flue gas recirculation amount can influence the stability of burner operation, its main cause is to maintain day
The passage of the uncertain burning of right gas enters substantial amounts of flue gas, causes the too low normal combustion that can not maintain natural gas of root temperature of burning
Burn, full premix combustion in the market be " full premixed metal fiber surface combustion technology ", the metallic fiber that the technology is applied
Combustion head is expensive, relies primarily on import, easy scaling loss.And premix worries burner combustion to traditional burner internal entirely
Stability and the problem of tempering, based on above technical background, my company combines oneself years of researches and practical application, releases
A kind of new ultralow nitrogen neat gas burner.
Utility model content
The purpose of this utility model is and the ultralow nitrogen natural gas combustion proposed in order to solve shortcoming present in prior art
Burner.
To achieve these goals, the utility model employs following technical scheme：Ultralow nitrogen neat gas burner, including
Neat gas burner main body, described neat gas burner main body are mainly made up of gas spraying device of air and air-intake device, and
Gas spraying device of air is located at the center of burner body, and the air-intake device tail end offers an air channel and two respectively
Secondary air channel, one time air channel is located on neat gas burner main center line, and the air channel rear end is provided with fire retardant mixer
And cyclone, the rear end of the secondary air duct are provided with the secondary air duct cyclone of adjustable angle, an air channel and two
Secondary air channel is connected to First air oxygen analyzer and Secondary Air oxygen analyzer, the air-intake device front end inlet box upper casing
Body is provided with circulating flue gas First air air inlet and circulating flue gas Secondary Air air inlet, and circulating flue gas First air air inlet and follows
Circulating flue gas First air air adjustment actuator is respectively fixed with ring smoke secondary wind air inlet passage and circulating flue gas Secondary Air adjusts wind
Mechanism, the air-intake device front end inlet box lower house are provided with combustion air First air air inlet and combustion air Secondary Air air intake
Mouthful, and combustion air First air air inlet and combustion air Secondary Air air inlet channel interior are respectively fixed with combustion air First air and adjust wind
Mechanism and combustion air Secondary Air air adjustment actuator.
As further describing for above-mentioned technical proposal：
The angle of regulation range of the secondary air duct cyclone be zero degree to 90 degree, and secondary air duct cyclone
Highly it is the half of secondary air duct total height.
As further describing for above-mentioned technical proposal：
The circulating flue gas First air air inlet and circulating flue gas Secondary Air air inlet and combustion air First air air inlet and
Combustion air Secondary Air air inlet is symmetrical on neat gas burner main body horizontal central line.
As further describing for above-mentioned technical proposal：
The circulating flue gas First air air inlet and circulating flue gas Secondary Air air inlet and combustion air First air air inlet and
The passage of combustion air Secondary Air air inlet correspond to an air channel and secondary air duct respectively.
As further describing for above-mentioned technical proposal：
The tail end of the fire retardant mixer and a cyclone is connected with jet mechanism.
In the utility model, the utility model first is provided with an air channel and secondary air duct, and an air channel and secondary
The oxygen conten analyser being respectively provided with air channel, the flue gas recirculation amount of two passages is automatically adjusted, wherein an air channel will be combustion-supporting
In 16%-18%, the combustion-supporting oxygen amount that the passage provides accounts for the 40% of total amount and act as ensureing the combustion of natural gas root wind Control for Oxygen Content
Part of smoke is mixed while the stability of burning reduces NOx generation, and secondary air duct is by combustion air Control for Oxygen Content in 12%-
15%, the combustion-supporting oxygen amount that the passage provides accounts for the 60% of total amount and act as providing the remaining oxygen needed for combustion of natural gas, simultaneously
Due to being mixed with a large amount of backflow flue gas, such flue gas can be participated directly in burning, the significantly more efficient temperature for reducing flame
Degree, it is possible thereby to reduce 85%NOx yield, to reach the purpose of super low nitrogen burning, secondly jet mechanism is connected to back-fire relief mixing
The rear side of device and cyclone, during work natural gas by certain form be first injected to inside an air channel with an air channel
Combustion air premix in advance, then spraying burner by fire retardant mixer and cyclone again carries out stablizing burning, thus
Become a kind of fuel of low heat value, low-heat by being pre-mixed with non-flammable air equivalent to by a kind of fuel of high heating value
The fuel of value is low compared to the fuel flame temperature of high heating value, NOx generation can be effectively reduced, further, secondary air channel
Rear end be provided with zero degree to 90 degree of adjustable angle cyclone；The height of cyclone is secondary air channel total height
Half；Secondary air duct can be controlled to participate in the state of burning by adjusting the aperture of cyclone, delay secondary air duct with it is natural
The time of gas mixing, avoid concentration zones of burning, further reducing NOx generation.
Brief description of the drawings
Fig. 1 be the utility model proposes ultralow nitrogen neat gas burner structural representation.
Marginal data：1- gas sprayings device of air, 2- air-intake devices, 3- circulating flue gas First airs air inlet, 4- circulation cigarettes
Gas First air air adjustment actuator, 5- circulating flue gas Secondary Airs air inlet, 6- circulating flue gas Secondary Airs air adjustment actuator, 7- secondary air ducts,
Air channel of 8-, 9- secondary air ducts cyclone, 10- combustion air First airs air inlet, 11- combustion air First airs air adjustment actuator,
12- combustion air Secondary Airs air inlet, 13- combustion air Secondary Airs air adjustment actuator, 14- First airs oxygen analyzer, 15- Secondary Air oxygen
Measure analyzer, 16- mounting flanges, 17- fire retardant mixers, 18- air channel cyclone.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.
Reference picture 1, ultralow nitrogen neat gas burner, including neat gas burner main body 19, it is characterised in that natural gas
Burner body 19 is mainly made up of gas spraying device of air 1 and air-intake device 2, and gas spraying device of air 1 is located at burner
The center of main body, the tail end of air-intake device 2 offer an air channel 8 and secondary air duct 7 respectively, and an air channel 8 is positioned at natural
On the center line of air burner main body 19, an air channel 8 rear end is provided with fire retardant mixer 17 and cyclone 18, secondary air duct 7
Rear end be provided with adjustable angle secondary air duct cyclone 9, an air channel 8 and secondary air duct 7 are connected to First air oxygen
Amount analyzer 14 and Secondary Air oxygen analyzer 15, the front end inlet box upper shell of air-intake device 2 are provided with circulating flue gas First air
Air inlet 3 and circulating flue gas Secondary Air air inlet 5, and circulating flue gas First air air inlet 3 and circulating flue gas Secondary Air air inlet 5
Circulating flue gas First air air adjustment actuator 4 and circulating flue gas Secondary Air air adjustment actuator 6 are respectively fixed with passage, before air-intake device 2
End inlet box lower house is provided with combustion air First air air inlet 10 and combustion air Secondary Air air inlet 12, and combustion air First air
Air inlet 10 and the channel interior of combustion air Secondary Air air inlet 12 are respectively fixed with combustion air First air air adjustment actuator 11 and combustion-supporting
Wind Secondary Air air adjustment actuator 13.
The angle of regulation range of secondary air duct cyclone 9 be zero degree to 90 degree, and the height of secondary air duct cyclone 9
Spend for the half of the total height of secondary air duct 7, circulating flue gas First air air inlet 3 and circulating flue gas Secondary Air air inlet 5 with it is combustion-supporting
Wind First air air inlet 10 and combustion air Secondary Air air inlet 12 are symmetrical on the horizontal central line of neat gas burner main body 19,
Circulating flue gas First air air inlet 3 and circulating flue gas Secondary Air air inlet 5 and combustion air First air air inlet 10 and combustion air two
The passage of secondary wind air inlet 12 correspond to an air channel 8 and secondary air duct 7, fire retardant mixer 17 and a cyclone 18 respectively
Tail end be connected with jet mechanism.
Operation principle：In use, a part of combustion air circulates cigarette from combustion air First air air inlet 10, a part during work
Gas sprays burning after being mixed from circulating flue gas First air air inlet 3, while an air channel 8 in the air-intake device 2 of entrance
Device participates in burning, First air oxygen analyzer 14 is provided with an air channel 8, according to the measured value of First air oxygen analyzer 14
Circulating flue gas First air air adjustment actuator 4 is automatically adjusted, to adjust the flue gas recirculation amount of circulating flue gas First air air inlet 3, root
According to the flow adjustment combustion air First air air adjustment actuator 11 of natural gas, to adjust the combustion-supporting distinguished and admirable of combustion air First air air inlet 10
Amount, a combustion air Control for Oxygen Content of air channel 8 is accounted for the 40% of total amount in 16%-18%, the combustion-supporting oxygen amount that an air channel 8 provides
It act as ensureing that part of smoke is mixed while the stability of natural gas root-burn reduces NOx generation, meanwhile, secondary
Secondary Air oxygen analyzer 15 is provided with air channel 7, circulating flue gas is automatically adjusted according to the measured value of Secondary Air oxygen analyzer 15
Secondary Air air adjustment actuator 6, to adjust the flue gas recirculation amount of circulating flue gas Secondary Air air inlet 5, adjusted according to the flow of natural gas
Whole combustion air Secondary Air air adjustment actuator 13, to adjust the combustion-supporting wind flow of combustion air Secondary Air air inlet 12, secondary air duct 7 is helped
Wind Control for Oxygen Content is fired in 12%-15%, and the combustion-supporting oxygen amount that secondary air duct 7 provides accounts for the 60% of total amount and act as providing natural gas
Remaining oxygen needed for burning, simultaneously because being mixed with a large amount of backflow flue gas, such flue gas can be participated directly in burning,
It is significantly more efficient to reduce the temperature of flame, it is possible thereby to 85%NOx yield is reduced, it is secondary to reach the purpose of super low nitrogen burning
The rear end in air channel 7 is provided with the secondary air duct cyclone 9 of 0 ° of -90 ° of adjustable angle；The blade of secondary air duct cyclone 9
Highly lead to the half of 7 total heights for Secondary Air；Secondary Air can be controlled to participate in by the aperture for adjusting secondary air duct cyclone 9
The state of burning, the time that delay Secondary Air mixes with natural gas, concentration zones of burning are avoided, further reduce NOx generation, and
Natural gas is first injected to the inside in an air channel 8 by certain form and the combustion air in an air channel 8 premixes in advance, then
Spray burner by fire retardant mixer 17 and First air cyclone 18 again to carry out stablizing burning, thus equivalent to by one kind
The fuel of high heating value becomes a kind of fuel of low heat value by being pre-mixed with non-flammable air, and the fuel of low heat value is compared
It is low in the fuel flame temperature of high heating value, it can effectively reduce NOx generation.
Claims (4)
1. a kind of ultralow nitrogen neat gas burner, including neat gas burner main body（19）, it is characterised in that described natural gas
Burner body（19）Mainly by gas spraying device of air（1）And air-intake device（2）Composition, and gas spraying device of air（1）Position
In the center of burner body, the air-intake device（2）Tail end offers an air channel respectively（8）And secondary air duct（7）,
Air channel（8）Positioned at neat gas burner main body（19）On center line, an air channel（8）Rear end is provided with back-fire relief mixing
Device（17）And cyclone（18）, the secondary air duct（7）Rear end be provided with adjustable angle secondary air duct cyclone（9）,
Air channel（8）And secondary air duct（7）It is connected to First air oxygen analyzer（14）With Secondary Air oxygen analyzer
（15）, the air-intake device（2）Front end inlet box upper shell is provided with circulating flue gas First air air inlet（3）With circulating flue gas two
Secondary wind air inlet（5）, and circulating flue gas First air air inlet（3）With circulating flue gas Secondary Air air inlet（5）It is solid respectively in passage
Surely there is circulating flue gas First air air adjustment actuator（4）With circulating flue gas Secondary Air air adjustment actuator（6）, the air-intake device（2）Front end
Inlet box lower house is provided with combustion air First air air inlet（10）With combustion air Secondary Air air inlet（12）, and combustion air is once
Wind air inlet（10）With combustion air Secondary Air air inlet（12）Channel interior is respectively fixed with combustion air First air air adjustment actuator
（11）With combustion air Secondary Air air adjustment actuator（13）.
2. ultralow nitrogen neat gas burner according to claim 1, it is characterised in that the secondary air duct cyclone
（9）Angle of regulation range be zero degree to 90 degree, and secondary air duct cyclone（9）Height be secondary air duct（7）It is total high
The half of degree.
3. ultralow nitrogen neat gas burner according to claim 1, it is characterised in that the circulating flue gas First air air intake
Mouthful（3）With circulating flue gas Secondary Air air inlet（5）With combustion air First air air inlet（10）With combustion air Secondary Air air inlet
（12）On neat gas burner main body（19）Horizontal central line is symmetrical.
4. ultralow nitrogen neat gas burner according to claim 1, it is characterised in that the circulating flue gas First air air intake
Mouthful（3）With circulating flue gas Secondary Air air inlet（5）With combustion air First air air inlet（10）With combustion air Secondary Air air inlet
（12）Passage correspond to an air channel respectively（8）And secondary air duct（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709433.3U CN207006149U (en) | 2017-06-19 | 2017-06-19 | Ultralow nitrogen neat gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709433.3U CN207006149U (en) | 2017-06-19 | 2017-06-19 | Ultralow nitrogen neat gas burner |
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| Publication Number | Publication Date |
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| CN207006149U true CN207006149U (en) | 2018-02-13 |
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| CN201720709433.3U Active CN207006149U (en) | 2017-06-19 | 2017-06-19 | Ultralow nitrogen neat gas burner |
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| Country | Link |
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| CN (1) | CN207006149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091475A (en) * | 2017-06-19 | 2017-08-25 | 唐山金沙燃烧热能股份有限公司 | Ultralow nitrogen neat gas burner |
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2017
- 2017-06-19 CN CN201720709433.3U patent/CN207006149U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091475A (en) * | 2017-06-19 | 2017-08-25 | 唐山金沙燃烧热能股份有限公司 | Ultralow nitrogen neat gas burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Ultra low nitrogen natural gas burner Effective date of registration: 20210624 Granted publication date: 20180213 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY Co.,Ltd. Registration number: Y2021990000552 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221111 Granted publication date: 20180213 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Registration number: Y2021990000552 |