CN201964415U - Multinozzle semi-premixed gas burner - Google Patents
Multinozzle semi-premixed gas burner Download PDFInfo
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- CN201964415U CN201964415U CN2010206696199U CN201020669619U CN201964415U CN 201964415 U CN201964415 U CN 201964415U CN 2010206696199 U CN2010206696199 U CN 2010206696199U CN 201020669619 U CN201020669619 U CN 201020669619U CN 201964415 U CN201964415 U CN 201964415U
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- heating furnace
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Abstract
A multinozzle semi-premixed gas burner comprises a main gas pipe communicated with a gas pipeline, at least three branch gas pipes communicated with the main gas pipe, an inductive jet pipe communicated with an air channel and with the same amount of the branch gas pipes, nozzles arranged on the heads of the branch gas pipes, and a flame stabilizing casing positioned around the nozzles. The branch gas pipes are evenly distributed around the main gas pipe, the inductive jet pipe is provided with openings relative to the side walls of the branch gas pipes and a plurality of air holes are arranged on the flame stabilizing casing. The multinozzle semi-premixed gas burner is installed in the center of the bottom of a heating furnace, thereby improving the furnace box temperature of a radiation section at the bottom, decreasing the furnace box temperature of a convection section and the temperature of smoke discharge at the top, improving thermal efficiency of the heating furnace, meanwhile realizing the goal of utilizing exhaust gas, saving energy and reducing emission, enabling the length of flame ejected by the burner to be reasonable, intensifying burning effect and leading flame to be strong and powerful.
Description
Technical field
The utility model relates to a kind of combustion gas (waste gas) burner, relates in particular to a kind of gas burner that use at the center at the bottom of the heating-furnace of petrochemical industry.
Background technology
The heating furnace of chemical industry adopts usually at the furnace bottom circumference uniform distribution and uses three (many) burner ejections to become the flame heat mode of parallel direction with boiler tube, it is on the low side bottom radiant section temperature often to occur, the upper convection section temperature drift, simultaneously exhaust gas temperature exceeds phenomenons such as thermal efficiency of heating furnace such as design load is inclined to one side, one of them main cause is exactly a radiant section temperature field irrational distribution, most of heat does not concentrate on the bottom radiation heat transfer, and gone to top heat convection district heat exchange, cause thermal efficiency of heating furnace low.
Usually chemical enterprise is want to increase the bottom to radiation heat transfer by strengthening furnace bottom burner gas quantity; improve thermal efficiency of heating furnace; but because the original burner in bottom all adopts with boiler tube and becomes parallel flame heat form; under the certain situation of burner structure; gas quantity increases; the length of flame of burner ejection is elongated, causes the convection section temperature drift, even burns out heat exchanger tube hook etc. and be unfavorable for the phenomenon of keeping the safety in production.
It is not enough bottom radiant section furnace bore temperature to occur in the normal use of former heating furnace, upper convection section fire box temperature and exhaust gas temperature are higher, increase the burner thermic load of original three furnace bottom circumference uniform distributions, can not improve the convection section fire box temperature, convection section fire box temperature and exhaust gas temperature continue to increase on the contrary.
On the other hand, the self-produced again a lot of technology waste gas of chemical enterprise itself contain a lot of combustible components (as: H2, CO, CH4 etc.) and all carry out the processing of emptying simply in the waste gas, cause the waste of resource and the pollution of environment.
The utility model content
The purpose of this utility model provides a kind of multiinjector half premixed gas burner, it both can be the waste gas of original self-produced emptying as effective fuel, can solve existing heating furnace radiant section temperature field irrational distribution again, technical problem such as exhaust gas temperature is higher, and thermal efficiency of heating furnace is on the low side.
Technical solution of the present utility model is:
A kind of multiinjector half premixed gas burner, its special character is: comprise the main combustible pipe 1 that communicates with gas pipeline, at least three Gas Pipe 2 that communicate with main combustible pipe, communicate with air duct and quantity and prop up the consistent induction tunnel 3 of Gas Pipe, be arranged on the nozzle 5 that props up Gas Pipe 2 heads, the stable flame cover 4 that is arranged on nozzle 5 peripheries; Described Gas Pipe 2 is evenly distributed on around the main combustible pipe; Described induction tunnel 3 is opened on the sidewall of a corresponding Gas Pipe 2; Described stable flame cover 4 is provided with a plurality of pores 6.
The axis of above-mentioned Gas Pipe 2 and main combustible pipe 1 axis angle a are 10～30 °.
The pore 6 of above-mentioned stable flame cover 4 is oval pore, and its quantity is 12.
Advantage of the present utility model:
1, is installed in center at the bottom of the heating-furnace, can reaches and improve bottom radiant section furnace bore temperature, reduce upper convection section fire box temperature and exhaust gas temperature, improve thermal efficiency of heating furnace, reach the purpose of exhaust gas utilization energy-saving and emission-reduction simultaneously.
2, as shown in Figure 3, during this novel burner is installed at the bottom of the heating-furnace in the heart, and the nozzle direction of Gas Pipe will be at the flame of former heating furnace burner ejection between the two, three strands of flames that guarantee the ejection of this novel burner are distributed between former burner flame, can avoid the stack of two strands of flames to cause the length of flame and direction to change licking to lick heating furnace tube like this and bring hidden danger, can improve the radiant section temperature field simultaneously and distribute to safety in production.
Thereby whether the corner dimension that 3, props up Gas Pipe axis and main combustible pipe axis is directly connected to the flame of this burner ejection and can licks and lick the heating furnace wall and cause safety in production hidden danger, so the utility model determines that through meticulous calculating, simulation, test a plurality of Gas Pipe axis become 10～30 ° of angles with the main combustible pipe axis direction.
4, the utility model is provided with induction tunnel, and portion of air as wind and combustion gas (waste gas) premix, is reached and reduces length of flame purpose, guarantees that the length of flame of this novel burner ejection is reasonable.
5, each Gas Pipe of the utility model all is equipped with induction tunnel, connects nozzle in a Gas Pipe end, between nozzle and the induction tunnel stable flame cover is set, open 12 oval pores on the stable flame cover, played the effect of secondary wind, strengthened air and fuel mix, the overheavy firing effect makes flame rigidity strong.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the flame schematic diagram of the utility model in heating furnace;
Fig. 4 is the position view of the utility model in heating furnace;
Wherein: the 1-main combustible pipe, 2-props up Gas Pipe, 3-induction tunnel, 4-stable flame cover, the 5-nozzle, the 6-pore, 7-heating furnace radiant section flame retardant coating, 8-neat gas burner flame, 9-multiinjector half pre-mixing type combustion apapratus flame, at the bottom of the 10-heating-furnace, 11-multiinjector half pre-mixing type combustion apapratus, 12-neat gas burner.
The specific embodiment
As shown in Fig. 1,2, the utility model comprises a main combustible pipe 1, three Gas Pipe 2, three induction tunnels 3, three stable flame covers 4, three nozzles 5.Prop up 2 one-tenth 120 ° of circumference uniform distributions of Gas Pipe on main combustible pipe 1, its axis becomes 10-30 ° of angle with main combustible pipe 1 axis direction.Each Gas Pipe 2 is equipped with induction tunnel 3, connects nozzle 5 in Gas Pipe 2 end, between nozzle 5 and the induction tunnel 3 stable flame cover 4 is set, 12 oval pores 6 have been opened on the stable flame cover 4, play the effect of secondary wind, enhanced fuel gas combustion effect makes flame rigidity strong.
The effect that the utility model is tested on certain two gas heating furnace in chemical enterprise ammonia workshop is as follows:
This heating furnace is the atmospheric pressure kiln of tubular type heating, total high 22.27m of stove, the high 7.73m of bottom radiant section, internal diameter 2.66m, the high 4.03m of middle part convection section, internal diameter 1.9m, the high 10.51m of top smoke evacuation tube, internal diameter 1.0m.The burner of three fuel natural gas of circumference uniform distribution at the bottom of the heating-furnace is nature induced air type diffusion combustion mode.Natural gas from compressor is introduced into the preheating of gas heating furnace radiant section, advances the desulfurization of manganese oxide desulfurizer then, sends into convection section again and continues to be warmed up to 480 ± 5 ℃, sends into primary reformer after satisfying the requirement of natural gas steam reforming temperature process.Exhaust gas temperature to occur higher for heating furnace when ordinary production, and heated gas medium advances that the primary reformer temperature is on the low side not to meet the technology requirement, and thermal efficiency of heating furnace is low.
The waste gas major parameter that this enterprise's ammonia synthesis process produces is: total flow 2000-3000Nm
3/ h is pressure 0.8MPa to novel burner nozzle preceding pipeline, and temperature is lower than 35 ℃, and waste gas main component (average) sees Table 1.
Table 1 exhaust gas constituents
| Component | H 2 | CH 4 | N 2 | NH 3 | Ar etc. |
| V％ | 29 | 18 | 40 | 10 | 3 |
When using the utility model, during this novel burner is installed at the bottom of the heating-furnace in the heart, and the shower nozzle direction of Gas Pipe will be at the flame of former heating furnace burner ejection between the two, three strands of flames that guarantee the ejection of this novel burner are distributed between former burner flame, and the included angle B in the accompanying drawing 3 is a Gas Pipe axis and a main combustible pipe axis direction angle a.Can avoid the stack of two strands of flames to cause the length of flame and direction to change licking to lick heating furnace tube like this and bring hidden danger, can improve the radiant section temperature field simultaneously and distribute to safety in production.Short and just advanced effectively from the flame of burner nozzle ejection, the fuel natural gas use amount has been saved 280Nm
3/ h, exhaust gas temperature have descended about 60 ℃, and having satisfied gas medium simultaneously, to advance the primary reformer temperature be 480 ± 5 ℃.
Gas heating furnace operational factor contrast (6 monthly average values) saw Table 2 before and after novel burner used.
Gas heating furnace operational factor contrast before and after table 2 uses
As can be seen from Table 2, use this novel burner after the gas heating furnace operating condition improve:
1, saved fuel natural gas, remarkable in economical benefits helps environmental protection simultaneously
The fuel natural gas use amount has on average been saved 280Nm
3/ h has not only saved natural gas but also the technology waste gas of original emptying is in vain effectively utilized economic benefit, obvious environment benefit.
2, improve the temperature flow field distribution, improved the gas heating furnace thermal efficiency
After the use, because the variation of flame distribution, the temperature field of having improved radiant section distributes, and has strengthened the heat exchange effect of convection section, has improved the thermal efficiency of heating furnace.Use the back natural gas to go the desulfurizer temperature-averaging to reduce by 20 ℃, on average improve 10 ℃, illustrate that furnace temp flow field, use back is more reasonable, improved the radiant section Temperature Distribution and advance the primary reformer temperature.The chimney meatus transmitting smoke temperature descends 60 ℃ simultaneously, and the burner hearth central temperature reduces by 40 ℃, and heating furnace radiant section and convection section heat exchange are more reasonable, and thermal efficiency of heating furnace obviously improves.
Claims (3)
1. a multiinjector half premixed gas burner is characterized in that: comprise the main combustible pipe that communicates with gas pipeline, at least three Gas Pipe that communicate with main combustible pipe, communicate with air duct and quantity and prop up the consistent induction tunnel of Gas Pipe, be arranged on the nozzle that props up the Gas Pipe head, the stable flame cover that is arranged on nozzle periphery; Described Gas Pipe is evenly distributed on around the main combustible pipe; Described induction tunnel is opened on the sidewall of a corresponding Gas Pipe; Described stable flame cover is provided with a plurality of pores.
2. multiinjector according to claim 1 half premixed gas burner, it is characterized in that: the axis of described Gas Pipe and main combustible pipe axis angle a are 10～30 °.
3. multiinjector according to claim 1 and 2 half premixed gas burner, it is characterized in that: the pore of described stable flame cover is oval pore, its quantity is 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206696199U CN201964415U (en) | 2010-12-20 | 2010-12-20 | Multinozzle semi-premixed gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206696199U CN201964415U (en) | 2010-12-20 | 2010-12-20 | Multinozzle semi-premixed gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201964415U true CN201964415U (en) | 2011-09-07 |
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ID=44526956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206696199U Expired - Fee Related CN201964415U (en) | 2010-12-20 | 2010-12-20 | Multinozzle semi-premixed gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201964415U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537961A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Multi-nozzle semi-premixed gas burner |
| CN102777906A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Group flow device of group injection flow complemented-burning type gas burner |
| CN102777913A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Air door tube base for volley jet afterburning gas burner |
| CN102777914A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Flocculated flow burning disc of gas burner |
| CN102777908A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Flow guiding disc of group injection flow complemented-burning type gas burner |
| CN107448942A (en) * | 2017-08-08 | 2017-12-08 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of gas burner |
-
2010
- 2010-12-20 CN CN2010206696199U patent/CN201964415U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537961A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Multi-nozzle semi-premixed gas burner |
| CN102777906A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Group flow device of group injection flow complemented-burning type gas burner |
| CN102777913A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Air door tube base for volley jet afterburning gas burner |
| CN102777914A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Flocculated flow burning disc of gas burner |
| CN102777908A (en) * | 2012-07-27 | 2012-11-14 | 慈溪市神驹节能科技有限公司 | Flow guiding disc of group injection flow complemented-burning type gas burner |
| CN102777914B (en) * | 2012-07-27 | 2014-06-18 | 慈溪市神驹节能科技有限公司 | Flocculated flow burning disc of gas burner |
| CN102777913B (en) * | 2012-07-27 | 2014-07-30 | 慈溪市神驹节能科技有限公司 | Air door tube base for volley jet afterburning gas burner |
| CN102777908B (en) * | 2012-07-27 | 2014-12-10 | 慈溪市神驹节能科技有限公司 | Flow guiding disc of group injection flow complemented-burning type gas burner |
| CN102777906B (en) * | 2012-07-27 | 2015-01-21 | 慈溪市神驹节能科技有限公司 | Group flow device of group injection flow complemented-burning type gas burner |
| CN107448942A (en) * | 2017-08-08 | 2017-12-08 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of gas burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20131220 |