CN204629490U - Reburner full classification fuel low NOx overhead gas burner - Google Patents
Reburner full classification fuel low NOx overhead gas burner Download PDFInfo
- Publication number
- CN204629490U CN204629490U CN201520201628.8U CN201520201628U CN204629490U CN 204629490 U CN204629490 U CN 204629490U CN 201520201628 U CN201520201628 U CN 201520201628U CN 204629490 U CN204629490 U CN 204629490U
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- fuel
- refractory brick
- reburner
- gas burner
- overhead gas
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Abstract
The utility model relates to the full classification fuel of a kind of reburner low NOx overhead gas burner.It comprises housing (1), the top of housing (1) is provided with air inlet (1.1), it is characterized in that: the bottom of described housing (1) is provided with refractory brick (4), refractory brick (4) has smoke backflow hole (5), the steady flame plate (6) of resistant to elevated temperatures metal is provided with in refractory brick (4), described burner also comprises low-pressure fuel air gun (7) and fuel under high pressure air gun (8), and low-pressure fuel air gun (7) and the staggered annular of fuel under high pressure air gun (8) are arranged in the outside of refractory brick (4).A kind of reburner full classification fuel low NOx overhead gas burner of the utility model, this burner can effectively reduce flame peak temperature, from the discharge capacity reducing NOx high temperature air.
Description
Technical field
The utility model relates to a kind of burner of reburner, particularly relates to a kind of burner of tipburn stove.Belong to technical field of combustion equipment.
Background technology
A large amount of operations of Chinese large-sized reburner in recent years, reburner is classified by radiation chamber heat-supplying mode, can be divided into following four kinds of modes: 1, tipburn stove; 2, sidefired furnace; 3, halfpace stove; 4, bottom fired heater.Wherein, tipburn stove adopts maximum a kind of type of furnaces, the burner arrangement of this type of furnace is at radiation chamber top, the conversion tube form of being heated is that single row of tubes is subject to double-side radiation, flame is parallel with boiler tube, burns vertically downward, and flue gas is descending, leave radiation chamber from burner hearth bottom flue, heat transfer type is and spreads heat.
The combustion air temperature of tipburn stove generally can reach 450 DEG C, reaches as high as 600 DEG C, at high temperature, and the N in air
2nOx can be oxidized to, the low-pressure fuel gas that the current general operative installations of tipburn furnace fuel is self-produced, shortage of heat part supplements high-pressure fuel gas, wherein, low-pressure fuel gas accounts for 90% of total thermal discharge, high-pressure fuel gas then accounts for about 10%, fuel under high pressure air gun and low-pressure fuel air gun are arranged to coaxial configuration by current tipburn burner, be arranged on the axis of quirk, adopt fuel single injection event, and coordinate the technology of air classification, and only rely on air classification technology significantly can not reduce flame peak temperature, therefore this kind of burner effectively can not reduce NOx emission, more and more higher discharge standard cannot be met.
NOx emission data are the important parameters characterizing burner performance, and restriction petrochemical industry tubular heater NOx emission is less than 100mg/m by " discharge standard of air pollutants " that be about to put into effect
3(48.8PPm), current most of burner can not meet this requirement.Along with moving forward steadily of national air contaminant treatment, reduce NOx emission extremely urgent.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and provide the full classification fuel of a kind of reburner low NOx overhead gas burner, this burner can effectively reduce flame peak temperature, from the discharge capacity reducing NOx high temperature air.
The purpose of this utility model is achieved in that
A kind of reburner full classification fuel low NOx overhead gas burner, comprise housing, the top of housing is provided with air inlet, be characterized in: described burner also comprises low-pressure fuel air gun and fuel under high pressure air gun, low-pressure fuel air gun and fuel under high pressure air gun pass housing and are uniform staggered with outside refractory brick.
A kind of reburner full classification fuel low NOx overhead gas burner of the utility model, the bottom of its housing is provided with refractory brick, refractory brick has smoke backflow hole, is provided with the steady flame plate of resistant to elevated temperatures metal in refractory brick.
A kind of reburner full classification fuel low NOx overhead gas burner of the utility model, its air inlet is provided with one and adjusts windshield plate.
A kind of reburner full classification fuel low NOx overhead gas burner of the utility model, is provided with an air baffle in its housing.
A kind of reburner full classification fuel low NOx overhead gas burner of the utility model, the inwall of its housing is equipped with and adopts aluminosilicate refractory fiber material to make heat-insulation layer.
A kind of reburner full classification fuel low NOx overhead gas burner of the utility model, the epimere of its refractory brick is cylindrical, and hypomere is tapered.
Compared with prior art, the beneficial effects of the utility model are:
1. a kind of reburner full classification fuel low NOx overhead gas burner of the utility model, fuel under high pressure air gun and low-pressure fuel air gun annular of interlocking is arranged in outside refractory brick, the hypomere of refractory brick is tapered and have smoke backflow hole, and refractory brick inside is provided with the steady flame plate of refractory metal.
Due to the full hierarchy that this high-low pressure fuel air gun is uniform staggered with outside refractory brick, combustion zone can be made to become large, and flame high-temperature area is no longer concentrated, and can heat release rapidly, therefore significantly can reduce the peak temperature of flame, thus reduce the generation of NOx.The high-low pressure fuel gas energy of branched interlaced arrangement and air mix rapidly fully, reduce excess air, the lifting device thermal efficiency while promoting combustion efficiency.In addition the high-pressure fuel gas of fuel under high pressure air gun ejection makes to produce negative pressuren zone near shower nozzle, the oxygen deprivation flue gas that in stove, flame temperature is lower is relatively flowed along injection direction, introduces combustion zone, reduce flame peak temperature, thus reduce the discharge of NOx.
2. the utility model air adopts side air admission, air inlet is provided with the tune windshield plate for regulating intake, and be provided with air baffle in housing, therefore make air flow in the structure that runner is shorter more even, solve in the past air side to the problem of air inlet structure eccentricity of fire.
3. the utility model adopts empty full fractional combustion in conjunction with the technology of flue gas recirculation, more significantly reduces flame peak temperature.
Accompanying drawing explanation
Fig. 1 is the structural representation of the full classification fuel of a kind of reburner of the utility model low NOx overhead gas burner.
Fig. 2 is the layout drawing of fuel under high pressure air gun of the present utility model and low-pressure fuel air gun.
Fig. 3 is air flow direction schematic diagram of the present utility model.
In figure:
Housing 1,
Air inlet 1.1,
Air outlet 1.2,
Adjust windshield plate 2,
Air baffle 3,
Refractory brick 4,
Smoke backflow hole 5,
Steady flame plate 6,
Low-pressure fuel air gun 7,
Fuel under high pressure air gun 8.
Detailed description of the invention
See Fig. 1-2, the utility model relates to the full classification fuel of a kind of reburner low NOx overhead gas burner, it comprises housing 1, air adopts side air admission, the top of housing 1 is provided with air inlet 1.1, and air inlet 1.1 place is provided with one and adjusts windshield plate 2, is provided with the air baffle 3 of one piece of arc in housing 1, the inwall of housing 1 lays heat-insulation layer, and described heat-insulation layer adopts aluminosilicate refractory fiber material to make.Lower air outlet 1.2 place of described housing 1 is provided with refractory brick 4, described refractory brick 4 is high alumina heavy refractory brick, the epimere of refractory brick 4 is cylindrical, hypomere is tapered, the hypomere of refractory brick 4 has smoke backflow hole 5, the steady flame plate 6 of resistant to elevated temperatures metal is provided with in refractory brick 4, steady flame plate 6 has several aperture, on refractory brick 4, annular is furnished with fuel air gun, described fuel air gun comprises full classification low-pressure fuel air gun 7 and full classification fuel under high pressure air gun 8, and low-pressure fuel air gun 7 and fuel under high pressure air gun 8 pass housing 1 and be uniform staggered with outside refractory brick 4.
Operation principle: a kind of reburner full classification fuel low NOx overhead gas burner of the utility model, fuel under high pressure air gun 8 and low-pressure fuel air gun 7 are uniform staggered with outside refractory brick 4, inner side no longer fuel arranged air gun, all fuel sprays into burner hearth by the fuel under high pressure air gun 8 outside refractory brick 4 and low-pressure fuel air gun 7, burn, this is full classification fuel technology, full classification fuel technology can make combustion zone become large, flame high-temperature area is no longer concentrated, and can heat release rapidly, therefore the peak temperature of flame can significantly be reduced, thus reduce the generation of NOx.The high-low pressure fuel gas energy of branched interlaced arrangement and air mix rapidly fully, reduce excess air, the lifting device thermal efficiency while promoting combustion efficiency.
The hypomere of refractory brick 4 is tapered and have smoke backflow hole 5, refractory brick 4 inside is provided with the steady flame plate 6 of refractory metal, the high-pressure fuel gas that fuel under high pressure air gun 8 sprays makes to produce negative pressuren zone near shower nozzle, the oxygen deprivation flue gas that in stove, flame temperature is lower is relatively flowed along injection direction, introduce combustion zone, reduce flame peak temperature, thus make NOx emission value be reduced to below 30PPm.
See Fig. 3, the utility model air adopts side air admission, air inlet 1.1 place is provided with the tune windshield plate 2 for regulating intake, and in housing, be provided with air baffle 3, therefore make air flow in the structure that runner is shorter more even, solve in the past air side to the problem of air inlet structure eccentricity of fire.
Claims (6)
1. a reburner full classification fuel low NOx overhead gas burner, comprise housing (1), the top of housing (1) is provided with air inlet (1.1), it is characterized in that: described burner also comprises low-pressure fuel air gun (7) and fuel under high pressure air gun (8), low-pressure fuel air gun (7) and fuel under high pressure air gun (8) through housing (1) and be uniform staggered with refractory brick (4) outside.
2. a kind of reburner according to claim 1 full classification fuel low NOx overhead gas burner, it is characterized in that: the bottom of described housing (1) is provided with refractory brick (4), refractory brick (4) has smoke backflow hole (5), in refractory brick (4), be provided with the steady flame plate (6) of resistant to elevated temperatures metal.
3. a kind of reburner according to claim 1 and 2 full classification fuel low NOx overhead gas burner, is characterized in that: air inlet (1.1) place is provided with one and adjusts windshield plate (2).
4. a kind of reburner according to claim 1 and 2 full classification fuel low NOx overhead gas burner, is characterized in that: be provided with an air baffle (3) in housing (1).
5. a kind of reburner according to claim 1 and 2 full classification fuel low NOx overhead gas burner, is characterized in that: the inwall of housing (1) is equipped with and adopts aluminosilicate refractory fiber material to make heat-insulation layer.
6. a kind of reburner according to claim 1 and 2 full classification fuel low NOx overhead gas burner, is characterized in that: the epimere of refractory brick (4) is cylindrical, and hypomere is tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201628.8U CN204629490U (en) | 2015-04-07 | 2015-04-07 | Reburner full classification fuel low NOx overhead gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201628.8U CN204629490U (en) | 2015-04-07 | 2015-04-07 | Reburner full classification fuel low NOx overhead gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204629490U true CN204629490U (en) | 2015-09-09 |
Family
ID=54048515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520201628.8U Expired - Fee Related CN204629490U (en) | 2015-04-07 | 2015-04-07 | Reburner full classification fuel low NOx overhead gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204629490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019751A (en) * | 2017-11-08 | 2018-05-11 | 扬州高立达科技产业有限公司 | The low NO of ultralow discharged nitrous oxidesxBurner |
-
2015
- 2015-04-07 CN CN201520201628.8U patent/CN204629490U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019751A (en) * | 2017-11-08 | 2018-05-11 | 扬州高立达科技产业有限公司 | The low NO of ultralow discharged nitrous oxidesxBurner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20180407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |