CN202018040U - Multi-nozzle double-row burner for heating furnace - Google Patents
Multi-nozzle double-row burner for heating furnace Download PDFInfo
- Publication number
- CN202018040U CN202018040U CN2010206701604U CN201020670160U CN202018040U CN 202018040 U CN202018040 U CN 202018040U CN 2010206701604 U CN2010206701604 U CN 2010206701604U CN 201020670160 U CN201020670160 U CN 201020670160U CN 202018040 U CN202018040 U CN 202018040U
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- gas pipe
- branch gas
- heating furnace
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- pipe group
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Abstract
The utility model discloses a multi-nozzle double-row burner for a heating furnace. The multi-nozzle double-row burner comprises a main gas pipe, a first branch gas pipe group and a second branch gas pipe group, wherein the main gas pipe is communicated with a gas pipeline; the first branch gas pipe group is communicated with the main gas pipe; the second branch gas pipe group is positioned below the first branch gas pipe group; the first branch gas pipe group comprises at least three first branch gas pipes; the quantity of second branch gas pipes of the second branch gas pipe group is accordant with the quantity of the first branch gas pipes of the first branch gas pipe group; the first branch gas pipes and the second branch gas pipes are distributed at corresponding positions; the top ends of the first branch gas pipes and the second branch gas pipes are provided with nozzles; an included angle a between the axis of each first branch gas pipe and the axis of the main gas pipe is between 5 degrees and 20 degrees; and an included angle b between the axis of each second branch gas pipe and the axis of the main gas pipe is greater than the included angle a and smaller than 40 degrees. By adopting the multi-nozzle double-row burner, the internal temperature field distribution form of the heating furnace is changed, the internal heat efficiency is improved, the cost on the purchasing of a plurality of burners is saved for an enterprise, mixing of air and fuel gas can be enhanced, the burning effect is enhanced, and rigid and powerful flame is realized.
Description
Technical field
The utility model relates to a kind of heating furnace with the double burner of multiinjector, 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 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.
The utility model content
The purpose of this utility model provides a kind of heating furnace with the double burner of multiinjector, changes original heating furnace burner flame distribution form and temperature field and distributes, and improves original heating furnace radiant section temperature field and distributes, and improves thermal efficiency of heating furnace.
Technical solution of the present utility model is:
A kind of heating furnace double burner of multiinjector, its special character is: second the Gas Pipe group that comprises the main combustible pipe that communicates with gas pipeline, first the Gas Pipe group that communicates with main combustible pipe and be positioned at first Gas Pipe group below; Described first Gas Pipe group comprises at least three first Gas Pipe, and Gas Pipe quantity is consistent and distributing position is corresponding for second Gas Pipe quantity of described second Gas Pipe group and first Gas Pipe group first; The top of described first Gas Pipe and second Gas Pipe is provided with nozzle; The angle a of the axis of described first Gas Pipe and the axis of main combustible pipe is 5～20 °; The angle b of the axis of described second Gas Pipe and the axis of main combustible pipe is greater than angle a and less than 40 °.
The nozzle of the nozzle of above-mentioned first Gas Pipe and second Gas Pipe is provided with stable flame cover; Described stable flame cover is provided with a plurality of pores 9.
The pore of above-mentioned stable flame cover is oval pore, and its quantity is 12.
Above-mentioned first Gas Pipe group comprises 3 first Gas Pipe.
Advantage of the present utility model:
1, during this novel burner is installed at the bottom of the heating-furnace in the heart, and the nozzle direction and the heating furnace central axis of a Gas Pipe have certain angle, changed original heating furnace bottom centre many burners, its nozzle direction and heating furnace central axis parallel construction form have been installed.And then changed heating furnace temperature field in furnace distribution form, improve the thermal efficiency in the stove.
Thereby whether the corner dimension that 2, 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, the size of angle a, b also is related to the reasonable distribution of heating temperature field in furnace simultaneously, the utility model determines that through meticulous calculating, simulation, test first Gas Pipe axis and main combustible pipe axis angle a are 5～20 °, second Gas Pipe axis and main combustible pipe axis direction angular range are greater than angle a and less than 40 °, can effectively avoid this problem.
3, original heating furnace is generally all evenly arranged many burners (as: three, four, six etc.) on the furnace bottom circumference, the burner that the shower nozzle direction is parallel with the heating furnace axis is installed at the center at the bottom of indivedual heating-furnaces, at the bottom of the heating-furnace of the present utility model the center only install and use this novel one just can satisfy the heating furnace thermic load, saved many burner costs of enterprise procurement.
4, each Gas Pipe end of the utility model connects nozzle, and nozzlend is provided with stable flame cover, has opened 12 oval pores on the stable flame cover, plays the reinforcement air and mixes with fuel gas, and the overheavy firing effect makes flame rigidity strong.
5, be installed in center at the bottom of the heating-furnace, can reach 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.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that A-A of the present utility model is to view;
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.
Among the figure: the 1-main combustible pipe, first Gas Pipe of 2-, second Gas Pipe of 3-, 4-first nozzle, 5-second nozzle, the 6-stable flame cover, the 7-heating furnace, at the bottom of the 8-heating-furnace, the 9-pore.
The specific embodiment
As shown in Fig. 1,2, a kind of heating furnace burner that the utility model provides, its preferred implementation is:
This burner comprises a main combustible pipe 1, three first Gas Pipe 2, three second Gas Pipe 3, three first nozzles 4, three second nozzles 5, six stable flame covers 6; First Gas Pipe 2 communicates with main combustible pipe 1 and becomes 120 ° of circumference uniform distributions on main combustible pipe 1, and the angle a of its axis and main combustible pipe 1 axis direction is 5～20 °; Second Gas Pipe 3 be arranged at first Gas Pipe 2 under, promptly second Gas Pipe 3 communicates with main combustible pipe 1 and becomes 120 ° of circumference uniform distributions on main combustible pipe 1, the angle b of its axis and main combustible pipe 1 axis direction greater than first Gas Pipe 2 with the angle a of main combustible pipe 1 and less than 40 °, i.e. 5 °＜a＜b＜40 °; Three first nozzles 4 are arranged at the head of three first Gas Pipe 2 respectively, and three second nozzles 5 are arranged on the head of second Gas Pipe 3 respectively; Six stable flame covers 6 are arranged on the periphery of three first nozzles 4 and three second nozzles 5 respectively, and on stable flame cover 6, offer 12 oval pores 9, make it can play the effect of secondary wind, strengthen air and mix with fuel gas, the overheavy firing effect makes flame rigidity strong.
First Gas Pipe 2 of the present utility model and second Gas Pipe 3 can also be a plurality of, are good but be three at least.
Referring to Fig. 3,4, burner of the present utility model is arranged at furnace bottom 8 centers of heating furnace 7, its flame sprays from nozzle, its radiation scope is bigger, lick heating furnace 7 walls but be unlikely to lick, can improve heating furnace 7 radiant section temperature fields and distribute, and can play the secondary wind action, overheavy firing effect and flame rigidity at the stable flame cover 6 of its peripheral perforate that is provided with.
The effect that the utility model is used on the gas heating furnace in certain chemical enterprise workshop is as follows.
This gas heating furnace is the atmospheric pressure kiln of tubular type heating, total high 22.7m of stove, the high 7.15m of bottom radiant section, internal diameter 1.9m, the high 2.6m of middle part convection section, internal diameter 1.4m, the high 12.95m of top smoke evacuation tube, internal diameter 0.45m.A fuel natural gas burner is installed at the center at the bottom of the heating-furnace, is natural 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 former neat gas burner air consumption that uses of this enterprise is 500Nm
3/ h, behind the replacing written or printed documents novel burner, the fuel natural gas use amount has been saved 80Nm
3/ h, exhaust gas temperature have descended about 45 ℃, and having satisfied gas medium simultaneously, to advance the primary reformer temperature be 480 ± 5 ℃.
Gas heating furnace operational factor contrast (12 monthly average values) saw Table 1 before and after novel heating furnace burner used.
Gas heating furnace operational factor contrast before and after table 1 uses
As can be seen from Table 1, use this novel burner after the gas heating furnace operating condition improve:
1, both satisfies technological requirement, saved fuel natural gas again, remarkable in economical benefits.
Having satisfied gas medium, to advance the primary reformer temperature be 480 ± 5 ℃ of technological requirements, saved the fuel natural gas use amount simultaneously and on average saved 80Nm
3/ h presses 1.6 yuan/Nm of fuel natural gas
3Adjust, can be enterprise every year and save 1,120,000 yuan, remarkable in economical benefits.
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 30 ℃, 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 45 ℃ simultaneously, and the burner hearth central temperature reduces by 20 ℃, and heating furnace radiant section and convection section heat exchange are more reasonable, and thermal efficiency of heating furnace obviously improves.
Claims (4)
1. a heating furnace is characterized in that: second the Gas Pipe group that comprises the main combustible pipe that communicates with gas pipeline, first the Gas Pipe group that communicates with main combustible pipe and be positioned at first Gas Pipe group below with the double burner of multiinjector; Described first Gas Pipe group comprises at least three first Gas Pipe, and Gas Pipe quantity is consistent and distributing position is corresponding for second Gas Pipe quantity of described second Gas Pipe group and first Gas Pipe group first; The top of described first Gas Pipe and second Gas Pipe is provided with nozzle; The angle a of the axis of described first Gas Pipe and the axis of main combustible pipe is 5～20 °; The angle b of the axis of described second Gas Pipe and the axis of main combustible pipe is greater than angle a and less than 40 °.
2. the heating furnace according to claim 1 double burner of multiinjector, it is characterized in that: the nozzle of the nozzle of described first Gas Pipe and second Gas Pipe is provided with stable flame cover; Described stable flame cover is provided with a plurality of pores.
3. the heating furnace according to claim 1 and 2 double burner of multiinjector, it is characterized in that: the pore of described stable flame cover is oval pore, its quantity is 12.
4. the heating furnace according to claim 3 double burner of multiinjector, it is characterized in that: described first Gas Pipe group comprises 3 first Gas Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206701604U CN202018040U (en) | 2010-12-20 | 2010-12-20 | Multi-nozzle double-row burner for heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206701604U CN202018040U (en) | 2010-12-20 | 2010-12-20 | Multi-nozzle double-row burner for heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202018040U true CN202018040U (en) | 2011-10-26 |
Family
ID=44811710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206701604U Expired - Fee Related CN202018040U (en) | 2010-12-20 | 2010-12-20 | Multi-nozzle double-row burner for heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202018040U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537955A (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 double-row burner for heating furnace |
| CN105985808A (en) * | 2015-01-30 | 2016-10-05 | 神华集团有限责任公司 | Gasification nozzle and gasification furnace |
| CN111174625A (en) * | 2018-11-09 | 2020-05-19 | 深圳龙澄高科技环保股份有限公司 | Multi-branch crude gas pipeline component |
-
2010
- 2010-12-20 CN CN2010206701604U patent/CN202018040U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537955A (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 double-row burner for heating furnace |
| CN105985808A (en) * | 2015-01-30 | 2016-10-05 | 神华集团有限责任公司 | Gasification nozzle and gasification furnace |
| CN105985808B (en) * | 2015-01-30 | 2022-12-23 | 国家能源投资集团有限责任公司 | Gasification burner and gasification furnace |
| CN111174625A (en) * | 2018-11-09 | 2020-05-19 | 深圳龙澄高科技环保股份有限公司 | Multi-branch crude gas pipeline component |
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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: 20111026 Termination date: 20131220 |