CN205119061U - Gas fractional combustion ware - Google Patents
Gas fractional combustion ware Download PDFInfo
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- CN205119061U CN205119061U CN201520898545.9U CN201520898545U CN205119061U CN 205119061 U CN205119061 U CN 205119061U CN 201520898545 U CN201520898545 U CN 201520898545U CN 205119061 U CN205119061 U CN 205119061U
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Abstract
The utility model provides a gas fractional combustion ware, the combustor includes barrel, fire pan brick, gas owner spray gun, gas assistance spray gun, altar lamp, air -supply line and gas distributor pipe. The combustor is through adopting the gas hierarchical, through burning of non - chemical equivalent and fuel refueling, the NOx formation has effectively been reduced, through add the steady flame of foraminiferous disc cover at the combustor head, flame stability has been strengthened, make ordinary air inlet mode into venturi type spray tube air inlet, the disturbance of gas around the very big acceleration, can arouse the flame internal recycling of flue gas on every side, it mixes with the gas and heat transfer between the two to have reinforceed the air, the existence of local high -temperature region has been reduced, the upright and outspoken nature of flame has been strengthened.
Description
Technical field
The utility model relates to a kind of burner, refers in particular to the tubular heater being applicable to oil plant, can realize efficient low NOx and low noise.
Background technology
Tubular heater is the important firing equipment of petrochemical industry production field extensive use, the phenomenon such as the partial combustion device that current heating furnace uses occurs in running that oxygen content of smoke gas is too high, flame drifting, flame type are bad, the easy coking of boiler tube, discharged nitrous oxides exceed standard.Along with country is to the attention of energy-saving and emission-reduction, studies a kind of high efficency low NOx burner and be necessary very much.
At present efficient low-NO_x combustion technology mainly adopt that enhanced fuel air mixes, the technology of air classification and combustion gas classification.Document " the CFD research of tubular heater Researched of Air Staging Combustion Burning Pulverized Coal device " (Liu Bo etc., petroleum journal (PETROLEUM PROCESSING), 2013,29(6)) mainly describe a kind of Researched of Air Staging Combustion Burning Pulverized Coal device, air is divided into primary air and auxiliary air by it, utilize air flow to set up combustion with meagre oxygen district to reduce flame temperature, reduce nitrogen oxide NOx and generate, complete whole combustion process at fuel burning-out zone.But district of localized hyperthermia can be produced when the mixing of burner outlet air-flow is uneven, affect nitrogen oxide and reduce discharging; Document " the CFD research of novel low nitrogen combustion gas gradual combustor combustion characteristics and NOx emission " (Wu Xiaolei etc., chemical industry is in progress, 2014,33(9)) describe a kind of combustion gas gradual combustor, fuel is divided into primary fuel and secondary fuel by it, carry out part of fuel burning to reduce flame temperature in a poor fuel district, reduce NOx and generate, complete the burning of residual fuel at secondary fuel burning-out zone.But because air velocity is limited, cause recirculating zone less, mixed is not strong.Combustion gas classification and high-speed air combine by the utility model, effectively can reduce nitrogen oxide, can entrainment flue gas around again, strengthen the mixing of fuel and air because of high-speed air, strengthen turbulence effects, overheavy firing.
Utility model content
The purpose of this utility model is improved for the defect existed in existing gradual combustor and problem, provides the combustion gas gradual combustor of a kind of energy-efficient, low stain thing discharge.
The technical solution of the utility model is to provide a kind of combustion gas gradual combustor, described burner comprises cylindrical shell, brazier brick, combustion gas main jet rifle, the auxiliary spray gun of combustion gas, altar lamp, blast pipe and combustion gas distributor pipe, wherein: described combustion gas main jet rifle is positioned at body centre, described altar lamp is arranged at combustion gas main jet rifle side, the outside side of described cylindrical shell is provided with blast pipe, blast pipe other end entrance is provided with flow control valve, the upper end that described blast pipe is positioned at cylindrical shell offers some apertures, be connected with venturi type gas spray pipe by described aperture, described brazier brick outer shroud is designed with groove, gas gun auxiliary shower nozzle is set in groove, the auxiliary shower nozzle of combustion gas is connected with the auxiliary spray gun of combustion gas, combustion gas main jet rifle lower end is provided with a fuel gas inlet, combustion gas main jet rifle upper end is provided with combustion gas main jet head, combustion gas main jet head is provided with stable flame cover, the auxiliary spray gun lower end of combustion gas is provided with secondary fuel gas inlet, described secondary fuel gas inlet is connected with combustion gas distributor pipe.
In combustion gas gradual combustor of the present invention, the lining of described cylindrical shell is provided with insulating silencing material.
In combustion gas gradual combustor of the present invention, described altar lamp is arranged on combustion gas main jet rifle side, and ignite combustion gas main jet head.
In combustion gas gradual combustor of the present invention, the combustion gas main jet head of described combustion gas main jet rifle is provided with the sidewall one-level combustion gas spout of steady combustion, described combustion gas main jet crown portion is also provided with the oblique spout of one-level combustion gas of band α angle, and described sidewall one-level combustion gas spout and the oblique spout of one-level combustion gas form flame of centre.
In combustion gas gradual combustor of the present invention, the auxiliary shower nozzle of combustion gas of the auxiliary spray gun of described combustion gas is provided with the sidewall second gas burning spout of steady combustion, described combustion gas auxiliary shower nozzle top is also provided with the second gas burning main injection jet of band β angle and the auxiliary spout of second gas burning of band γ angle, three gas injection interruption-forming outer flames on auxiliary shower nozzle.
In combustion gas gradual combustor of the present invention, described stable flame cover is disk, and disk is provided with uniform hole.
In combustion gas gradual combustor of the present invention, described venturi type gas spray pipe is evenly distributed on below stable flame cover and combustion gas main jet rifle surrounding.
Burner described in the utility model, by adopting combustion gas classification, is fired by non-chemically equivalent burning and fuel again, effectively reduces NOx and generates.By adding disk stable flame cover with holes at burner head, enhance flame holding.Common air inlet mode is made into venturi type jet pipe air intake, the disturbance of great acceleration ambient gas, can cause the inner loop of flame periphery flue gas, enhances air and combustion gas mixing and heat exchange between the two, decrease the existence in district of localized hyperthermia, enhance flame outspoken nature.The utility model is applicable to most of tubular heater, can meet heating furnace device to the energy needed for product heating.
Accompanying drawing explanation
Fig. 1 is the structural representation of combustion gas gradual combustor described in the utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the utility model combustion gas main jet header structure schematic diagram.
Fig. 4 is the auxiliary nozzle structure schematic diagram of the utility model combustion gas.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the utility model can limit according to claim and cover multitude of different ways to be implemented.
As Figure 1-4, burner described in the utility model comprises cylindrical shell 2, brazier brick 1, combustion gas main jet rifle 4, the auxiliary spray gun 6 of combustion gas, altar lamp 3, blast pipe and combustion gas distributor pipe, wherein: described combustion gas main jet rifle 4 is positioned at body centre, described altar lamp 3 is arranged at combustion gas main jet rifle 4 side, the outside side of described cylindrical shell is provided with blast pipe 5, blast pipe 5 other end entrance is provided with flow control valve 11, the upper end that described blast pipe is positioned at cylindrical shell offers some apertures, be connected with venturi type gas spray pipe 10 by described aperture, described brazier brick 1 outer shroud is designed with groove, combustion gas auxiliary shower nozzle 7 is set in groove, the auxiliary shower nozzle of combustion gas 7 is connected with the auxiliary spray gun 17 of combustion gas, combustion gas main jet rifle 4 lower end is provided with a fuel gas inlet 18, combustion gas main jet rifle 4 upper end is provided with combustion gas main jet head 8, combustion gas main jet head 8 is provided with stable flame cover 9, below stable flame cover 9,4 venturi type gas spray pipes 10 are set with combustion gas main jet rifle 8 surrounding, combustion gas auxiliary spray gun 17 lower end is provided with secondary fuel gas inlet 19, described secondary fuel gas inlet 19 is connected with combustion gas distributor pipe 6.Described cylindrical shell 2 liner adopts deadener and heat-barrier material.Described altar lamp 3 is arranged on combustion gas main jet head 8 side for the combustion gas main jet head 8 that ignites.Described combustion gas main jet head 8 is provided with the sidewall one-level combustion gas spout 12 of steady combustion, combustion gas main jet crown portion is provided with the oblique spout 13 of one-level combustion gas of band α angle, and described sidewall one-level combustion gas spout 12 and the oblique spout 13 of one-level combustion gas form flame of centre.The auxiliary shower nozzle 7 of combustion gas of the auxiliary spray gun of described combustion gas 2 is provided with the sidewall second gas burning spout 14 of steady combustion, described combustion gas auxiliary shower nozzle top is also provided with the second gas burning main injection jet 15 of band β angle and the auxiliary spout 16 of second gas burning of band γ angle, three gas injection interruption-forming outer flames on auxiliary shower nozzle.
The specific works process of combustion gas gradual combustor of the present invention is as follows: the high-temperature preheated air of certain pressure (80-300Pa) to be regulated after air quantity through control valve 11 by blast pipe 5 and enters 4 venturi type gas spray pipes 10, injection is at a high speed sentenced from the venturi type gas spray pipe mouth of pipe, a combustion gas enters combustion gas main jet rifle 4 through a fuel gas inlet 18, each spout on combustion gas main jet head 8 is with injection at a high speed, be submerged in the high-speed air penetrated from venturi type gas spray pipe 10, both mixing are strong, high-speed air entrainments flue gas around simultaneously, dilute fuel gas, combustion gas burning under the igniting of altar lamp 3 flame, form the flame of centre of peroxide.The gas quantity sprayed due to main jet head 8 is few, and what mix with it is nominal air amount, and belong to lean fuel burning, combustion gas is simultaneously diluted through high-speed air, and combustion flame temperature is low, and thermal NO x generates few.The auxiliary shower nozzle 7 of combustion gas of the auxiliary spray gun of described combustion gas 2 is provided with the sidewall second gas burning spout 14 of steady combustion, described combustion gas auxiliary shower nozzle top is also provided with the second gas burning main injection jet 15 of band β angle and the auxiliary spout 16 of second gas burning of band γ angle, secondary combustion gas enters combustion gas distributor pipe 6 via secondary fuel gas inlet 19 and enters each auxiliary spray gun 17 again, each spout through the auxiliary shower nozzle 7 of combustion gas penetrates with high speed, burning under the igniting of main jet head 8 one-level combustion gas spout flame.The flame of sidewall combustion gas spout plays steady combustion effect under the effect of stable flame cover 9, and the flame of second gas burning spout forms outer flame under the effect of stable flame cover 9, further enhances flame stabilization burning.Because the gas quantity of auxiliary shower nozzle 7 is large, and the air mixed with it is the flue gas from flame of centre, and oxygen concentration reduces, and what carry out is mixed combustion under fuel overrich, and secondary fuel gas can also the part NO reduction that generate simultaneously, and the growing amount of NOx reduces.Due to the mixed combustion that I and II combustion gas is all under non-chemically equivalent proportion, combustion flame temperature is low, so NOx generates receive suppression, after two groups of bias combustions complete respectively, residue combustion gas and surplus air realize burning completely in the combination of flame top, therefore ignition temperature and oxygen concentration are all low, and NOx receives suppression again; Air simultaneously owing to spraying from venturi spray nozzle 10 injects burner hearth at a high speed, and the flue gas entrainmenting surrounding forms hypoxic atmosphere, and effectively reduce the generation of NOx, in flue gas, NOx concentration is at below 50ppm.
Claims (7)
1. a combustion gas gradual combustor, described burner comprises cylindrical shell, brazier brick, combustion gas main jet rifle, the auxiliary spray gun of combustion gas, altar lamp, blast pipe and combustion gas distributor pipe, wherein: described combustion gas main jet rifle is positioned at body centre, described altar lamp is arranged at combustion gas main jet rifle side, the outside side of described cylindrical shell is provided with blast pipe, blast pipe other end entrance is provided with flow control valve, the upper end that described blast pipe is positioned at cylindrical shell offers some apertures, be connected with venturi type gas spray pipe by described aperture, described brazier brick outer shroud is designed with groove, gas gun auxiliary shower nozzle is set in groove, the auxiliary shower nozzle of combustion gas is connected with the auxiliary spray gun of combustion gas, combustion gas main jet rifle lower end is provided with a fuel gas inlet, combustion gas main jet rifle upper end is provided with combustion gas main jet head, combustion gas main jet head is provided with stable flame cover, the auxiliary spray gun lower end of combustion gas is provided with secondary fuel gas inlet, described secondary fuel gas inlet is connected with combustion gas distributor pipe.
2. according to combustion gas gradual combustor according to claim 1, it is characterized in that: the lining of described cylindrical shell is provided with insulating silencing material.
3. according to combustion gas gradual combustor according to claim 1, it is characterized in that: described altar lamp is arranged on combustion gas main jet rifle side.
4. according to combustion gas gradual combustor according to claim 1, it is characterized in that: the sidewall one-level combustion gas spout combustion gas main jet head of described combustion gas main jet rifle being provided with steady combustion, described combustion gas main jet crown portion is also provided with the oblique spout of one-level combustion gas of band α angle.
5. according to combustion gas gradual combustor according to claim 1, it is characterized in that: the sidewall second gas burning spout auxiliary shower nozzle of combustion gas of the auxiliary spray gun of described combustion gas being provided with steady combustion, described combustion gas auxiliary shower nozzle top is also provided with the second gas burning main injection jet of band β angle and the auxiliary spout of second gas burning of band γ angle.
6. according to combustion gas gradual combustor according to claim 1, it is characterized in that: described stable flame cover is disk, and disk is provided with uniform hole.
7. according to combustion gas gradual combustor according to claim 1, it is characterized in that: described venturi type gas spray pipe is evenly distributed on below stable flame cover and combustion gas main jet rifle surrounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898545.9U CN205119061U (en) | 2015-11-12 | 2015-11-12 | Gas fractional combustion ware |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898545.9U CN205119061U (en) | 2015-11-12 | 2015-11-12 | Gas fractional combustion ware |
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| CN205119061U true CN205119061U (en) | 2016-03-30 |
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| CN201520898545.9U Active CN205119061U (en) | 2015-11-12 | 2015-11-12 | Gas fractional combustion ware |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931437A (en) * | 2017-03-28 | 2017-07-07 | 长沙理工大学 | A kind of low NOx gas burners with air conducting cover |
| CN107120652A (en) * | 2017-05-09 | 2017-09-01 | 北京水木星源环保科技有限公司 | One kind classification combustion gas low NO |
| CN108105766A (en) * | 2017-11-30 | 2018-06-01 | 郑平安 | It is a kind of to realize low-nitrogen discharged burner and application method |
| CN113639274A (en) * | 2021-08-12 | 2021-11-12 | 北京泷涛环境科技有限公司 | Smokeless high altitude diffusion torch head |
-
2015
- 2015-11-12 CN CN201520898545.9U patent/CN205119061U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931437A (en) * | 2017-03-28 | 2017-07-07 | 长沙理工大学 | A kind of low NOx gas burners with air conducting cover |
| CN107120652A (en) * | 2017-05-09 | 2017-09-01 | 北京水木星源环保科技有限公司 | One kind classification combustion gas low NO |
| CN107120652B (en) * | 2017-05-09 | 2023-07-21 | 北京水木星源环保科技有限公司 | Graded gas low-nitrogen burner |
| CN108105766A (en) * | 2017-11-30 | 2018-06-01 | 郑平安 | It is a kind of to realize low-nitrogen discharged burner and application method |
| CN113639274A (en) * | 2021-08-12 | 2021-11-12 | 北京泷涛环境科技有限公司 | Smokeless high altitude diffusion torch head |
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