CN202328246U - Side wall gas combustor with big adjusting capability - Google Patents
Side wall gas combustor with big adjusting capability Download PDFInfo
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- CN202328246U CN202328246U CN 201120460989 CN201120460989U CN202328246U CN 202328246 U CN202328246 U CN 202328246U CN 201120460989 CN201120460989 CN 201120460989 CN 201120460989 U CN201120460989 U CN 201120460989U CN 202328246 U CN202328246 U CN 202328246U
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- burner
- air inlet
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- boss
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Abstract
The utility model provides a side wall gas combustor with the big adjusting capability, which mainly consists of an air bellow (1), an air intake tee (2), a plug (3), an air intake pipe (4), a fuel injection nozzle (5), an ejector (6), a burner (7) and a burner brick (8), wherein the fuel gas introduced in through the air intake tee (2) ejects and is mixed with first combustion air to be injected into the combustion chamber for combustion through the burner (7); second combustion air goes into the combustion chamber to participate in the combustion through the annular gap between the burner (7) and the burner brick (8); by on-line replacing the fuel injection nozzle (5) or adjusting the size of a fire hole of the burner (7), the big adjusting capability and wide fuel application range of the side wall gas combustor are achieved; and the fuel injection nozzle (5) can be on-line maintained. The side wall gas combustor is particularly applicable to the cracking furnace, the flame is combusted against the wall, the combustion state is satisfactory, the noise is low, and the gas combustor is economical and practical and simpler to maintain and control.
Description
Technical field
The utility model relates to a kind of side-wall gas burner of big regulating power, and particularly a kind of ethane cracking furnace that is applicable to is the adherent flame gas burner of fuel with fuel gas.
Background technology
Burner is one of critical piece of ethane cracking furnace, and most of pyrolysis furnaces have adopted the mode of radiant wall burner and base burning device combined heat, and this configuration mode can obtain boiler tube axial temperature distribution uniformly.Radiant wall burner adopts half pre-mixing type combustion apapratus usually, utilizes the fuel gas injection air of fuel nozzle ejection, mixes with air that at injector fuel gas concentration field, temperature field, velocity field are reached unanimity, and ejection burner fire hole forms adherent flame.
The technology and the burner in early stage are being obtained success in various degree aspect flame profile, flame diameter, the heat flow density distribution, but for burner, also need some to improve, particularly the regulating power of radiant wall burner and regular maintenance.As everyone knows, the adjusting of burner is restricting the operating flexibility of pyrolysis furnace than the ratio of minimum load (the burner peak load with), and the adjusting ratio of bottom diffusion flame burner can reach 1:8 at present; And the adjusting of sidewall half pre-mixing type combustion apapratus is than being merely 1:3 usually; This is owing to burner structure form difference causes, and radiant wall burner needs to change the fuel-hole diameter as realizing the high ratio or the wide fuel scope of application of regulating; Sometimes also to change burner fire hole area; This just needs refuelling nozzle and burner, but the fuel nozzle of existing structure should not dismantle, and changes and uses the burner of precious metal material also uneconomical; The also unsuitable on-line maintenance of radiant wall burner fuel nozzle in addition, this might have influence on the operation cycle of stove.
CN00247075.6 discloses a kind of side-wall gas burner; Mainly form by fuel gas inlet tube, injector, burner; Characteristics be outside the air inlet end is provided with, interior muffler and look fire hole, the port of export of fuel gas inlet tube is provided with the gas spray head that places in the injector, the injector front end is connected to burner; The burner head is bowl-shape, and its bowl portion periphery has several rectangle spray orifices; Injector, burner periphery are provided with burner block, are provided with secondary combustion air adjuster between outer muffler and the burner block.The adherent burning of this flame in gas burner, combustion position is good, and long service life is easy to operate, and noise is low, but owing to limit by version, regulating power is little, the fuel scope of application is wideless, yet unsuitable on-line maintenance.
Summary of the invention
The purpose of the utility model is to avoid weak point of the prior art; A kind of side-wall gas burner of big regulating power is provided; Particularly a kind of being applicable on the ethane cracking furnace is the adherent flame sidewall gas burner of fuel with fuel gas; It not only can satisfy technological requirement, and is convenient to regular maintenance.
The purpose of the utility model is achieved in that
A kind of side-wall gas burner of big regulating power; Mainly form by bellows 1, air inlet pipe 4, fuel nozzle 5, injector 6, burner 7, burner block 8; The porch that it is characterized in that air inlet pipe 4 is connected on the person in charge of air inlet threeway 2, and the person in charge's the other end is threaded with plug 3, and arm is connected with burning line; Air inlet pipe 4 places in the injector 6; Air inlet pipe 4 ports of export have internal thread hole 9, and fuel nozzle 5 one ends have cross recess 10, can be screwed in the internal thread hole 9 of air inlet pipe 4 ports of export through its external screw thread by air inlet pipe 4 arrival ends; Fuel nozzle 5 centers have fuel jet orifice 11; Make the fuel gas of introducing from air inlet threeway 2 spray into injector 6 through fuel jet orifice 11, the injection primary air also mixes with it after the fire hole 12 of burner 7 sprays into the burner hearth burning, and the secondary combustion air that gets into burner hearth through annular space between burner 7 and the burner block 8 is also participated in burning in the combustion zone.
In the utility model, burner 7 also can be made up of burner head 13, burner body 14, fastening bolt 15, clamp nut 16, and burner head 13 is bowl-shape; The boss 17 of several (preferably 3～10) circumference uniform distributions is arranged at bowl eaves bottom, and each boss height is identical, and the bowl root has is convenient to the center drilling that fastening bolt 15 extends through; Burner body 14 is a tubular; The one of which end is fixed with a sleeve pipe at the place, axle center, and inside pipe casing is embedded with fastening bolt 15, and other end end face has the groove 18 of many group (preferably having 2～4 groups) circumference uniform distributions; Every group of depth of groove is identical; Every group preferably has 3～10 grooves that are uniformly distributed with (conforming to the boss number), and it is identical that each organizes between groove angle, and preferably α is 5 °～30 °; Each organizes the depth of groove difference, and the shape of cross section of groove 18 and boss 17 is complementary, and shape of cross section is preferably polygon or circle; Boss can embed in the groove, passes burner head 13 and burner body 14 and fixing by clamp nut 16 through fastening bolt 15.The joint gap of burner head 13 and burner body 14 forms burner fire hole 12, and the groove 18 through the different group of boss 17 insertions in the change burner head 13 because each group depth of groove is different, produces different clearance thus, can form the burner 7 of different burner fire holes 12.
The utility model is the improvement of CN00247075.6; Can be through the on-line replacing of fuel nozzle; Or off-line while fuel injector nozzle aperture and burner fire hole size; The height of realizing radiant wall burner regulate than with the wide fuel scope of application, saved the precious metal material simultaneously, but also on-line maintenance burner fuel nozzle in addition.More specifically give an example, a radiant wall burner has many cover fuel nozzles 5, and its fuel jet orifice 11 has nothing in common with each other; Difference according to burner ability or fuel is used different fuel nozzles 5, and during on-line replacing, cut-out needs the radiant wall burner fuel gas source of replacing; The plug 3 of outwarding winding has the cover fuel nozzle 5 that the long Phillips screwdriver of magnetic will change through head and screws out, otherwise changes to another set of fuel nozzle 5; In like manner also can online fuel nozzle 5 be safeguarded easy to operate economy.
If only depend on the change fuel-hole diameter can not satisfy the requirement of the burner ability or the fuel scope of application through technology Calculation; Need to change burner fire hole 12 areas; When off-line is safeguarded burner 7 is taken out; Outwarding winding connects the fastening bolt 15 and clamp nut 16 of burner head 13 and burner body 14, the size of regulating burner fire hole 12 through not on the same group the cooperation of burner head 13 convex platforms 17 and burner body 14 upper grooves 18 that match.
The material of fuel nozzle 5 is required to be magnetic material in the utility model side-wall gas burner.
When using the utility model, preferably adopt computational fluid dynamics (CFD) method to carry out the design of injector 6 and burner 7 runners; Adopt computational fluid dynamics (CFD) method to confirm the size and the quantity of fuel jet orifice 11, burner fire hole 12, thereby satisfy technological requirement.
The side-wall gas burner of the utility model is particularly suitable on pyrolysis furnace, using, and it is wide to be suitable for fuel range, the adherent burning of flame, and combustion position is good, and noise is low; And the burner of the utility model is simpler in maintenance and control, regulates than reaching 1:8 or higher, has given bigger elasticity of operator and security during the pyrolysis furnace operation.
The feature and advantage of the utility model can be through further describing in the following specific embodiment and the accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of the utility model burner;
Fig. 2 is the structure chart of the utility model combustor air inlet pipe;
Fig. 3 is the utility model burner fuel structure of nozzle figure;
Fig. 4 is the structural representation of the utility model combustor nozzle;
Fig. 5 is the structure chart of the utility model combustor nozzle head;
Fig. 6 is that the A of Fig. 5 is to view;
Fig. 7 is the utility model combustor nozzle main body structure figure;
Fig. 8 is that the B of Fig. 7 is to view.
Among the figure: 1-bellows, 2-air inlet threeway, 3-plug, 4-air inlet pipe, 5-fuel nozzle; The 6-injector, 7-burner, 8-burner block, 9-internal thread hole, 10-cross recess; The 11-fuel jet orifice, 12-burner fire hole, 13-burner head, 14-burner body; The 15-fastening bolt, 16-clamp nut, 17-boss, 18-groove.
The specific embodiment
Shown in Figure 1 is a kind of big regulating power side-wall gas burner that is used for ethane cracking furnace of using the utility model, mainly is made up of bellows 1, air inlet threeway 2, plug 3, air inlet pipe 4, fuel nozzle 5, injector 6, burner 7, burner block 8.It only is a kind of form of the utility model, and the utility model is not limited in this.
Consult Fig. 1; Air inlet threeway 2 is responsible for an end and is threaded with plug 3, is responsible for the other end and is connected with air inlet pipe 4 arrival ends, and arm is connected with burning line; Fuel gas gets into from air inlet pipe 4 through air inlet threeway 2; Spray into injector 6 through fuel nozzle 5, after in injector 6, mixing with it through the injection primary air, get into furnace combustion zone through burner 7.The secondary combustion air that gets into burner hearth through annular space between burner 7 and the burner block 8 is also participated in burning in the combustion zone.
Consult Fig. 1,2,3; Air inlet pipe 4 places in the injector 6, and air inlet pipe 4 ports of export have internal thread hole 9, and fuel nozzle 5 one ends have cross recess 10; Can be through the internal thread hole 9 of its external screw thread by air inlet pipe 4 arrival ends screw-in air inlet pipe 4 ports of export, fuel nozzle 5 centers have fuel jet orifice 11.
Consult Fig. 4, burner 7 is by burner head 13, burner body 14, fastening bolt 15, clamp nut 16.It only is a kind of form of the utility model, and the utility model is not limited in this.
Consult Fig. 5,6,8 boss that are uniformly distributed with 17 are arranged on the burner head 13, the boss height is identical.
Consult Fig. 7,8, three groups of grooves 18 are arranged on the burner body 14, every group has 8 grooves that are uniformly distributed with 18, and depth of groove is identical, and three groups of grooves promptly have three groups of degree of depth different recesses.
Consult Fig. 4,5,6,7,8, burner 7 is through fastening bolt 15, clamp nut 16, and with the different sizes of regulating burner fire hole 12 that cooperate of the burner body that matches 14 upper grooves 18.
The design of the runner of injector 6, burner 7 adopts computational fluid dynamics (CFD) method to design among Fig. 1.
The size of fuel jet orifice 11, burner fire hole 12, orientation and quantity adopt computational fluid dynamics (CFD) method to design among Fig. 3,4.
This side-wall gas operation of combustors elasticity is big, and it is wide to be suitable for fuel range, controls easy to maintenance.
Claims (6)
1. the side-wall gas burner of a big regulating power; Mainly form by bellows (1), air inlet pipe (4), fuel nozzle (5), injector (6), burner (7), burner block (8); The porch that it is characterized in that air inlet pipe (4) is connected on the person in charge of air inlet threeway (2); The other end of being responsible for is threaded with plug (3); Arm is connected with burning line, and air inlet pipe (4) places in the injector (6), and air inlet pipe (4) port of export has internal thread hole (9); Fuel nozzle (5) one ends have cross recess (10); Can be through the internal thread hole (9) of its external screw thread by air inlet pipe (4) arrival end screw-in air inlet pipe (4) port of export, fuel nozzle (5) center has fuel jet orifice (11), makes the fuel gas of introducing from air inlet threeway (2) spray into injector (6) through fuel jet orifice (11); The injection primary air also mixes with it after the fire hole (12) of burner (7) sprays into the burner hearth burning, and the secondary combustion air that gets into burner hearth through annular space between burner (7) and the burner block (8) is also participated in burning in the combustion zone.
2. side-wall gas burner according to claim 1 is characterized in that, burner (7) is made up of burner head (13), burner body (14), fastening bolt (15), clamp nut (16); Burner head (13) is bowl-shape, and the boss (17) of a plurality of circumference uniform distributions is arranged at bowl eaves bottom, and each boss height is identical; The bowl root has is convenient to the center drilling that fastening bolt (15) extends through, and burner body (14) is a tubular, and the one of which end is fixed with a sleeve pipe at the place, axle center; Inside pipe casing is embedded with fastening bolt (15); Other end end face has the grooves (18) of many group circumference uniform distributions, and every group of depth of groove is identical, and it is identical that each organizes between groove angle; Each organizes the depth of groove difference; The shape of cross section of groove (18) and boss (17) is complementary, and boss can embed in the groove, passes burner head (13) and burner body (14) and fixing by clamp nut (16) through fastening bolt (15); The joint gap of burner head (13) and burner body (14) forms burner fire hole (12).
3. side-wall gas burner according to claim 1 is characterized in that the boss (17) that is uniformly distributed with has 3～10.
4. side-wall gas burner according to claim 1 is characterized in that the groove (18) that has 2～4 groups to be complementary with burner head (13) boss (17) on the burner body (14).
5. side-wall gas burner according to claim 1, the angle that it is characterized in that respectively organizing between groove (18) is 5 °～30 °.
6. side-wall gas burner according to claim 1 is characterized in that the shape of cross section of boss (17) and groove (18) is polygon or circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120460989 CN202328246U (en) | 2011-11-20 | 2011-11-20 | Side wall gas combustor with big adjusting capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120460989 CN202328246U (en) | 2011-11-20 | 2011-11-20 | Side wall gas combustor with big adjusting capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202328246U true CN202328246U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120460989 Expired - Lifetime CN202328246U (en) | 2011-11-20 | 2011-11-20 | Side wall gas combustor with big adjusting capability |
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| Country | Link |
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| CN (1) | CN202328246U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672893A (en) * | 2013-11-28 | 2014-03-26 | 成都科盛石油科技有限公司 | Environment-friendly gas combustion apparatus |
| CN106989387A (en) * | 2017-02-22 | 2017-07-28 | 北京航空航天大学 | The low NOx gas burners of side wall fractional combustion and its combustion method |
-
2011
- 2011-11-20 CN CN 201120460989 patent/CN202328246U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672893A (en) * | 2013-11-28 | 2014-03-26 | 成都科盛石油科技有限公司 | Environment-friendly gas combustion apparatus |
| CN106989387A (en) * | 2017-02-22 | 2017-07-28 | 北京航空航天大学 | The low NOx gas burners of side wall fractional combustion and its combustion method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: Sinopec Corp. Patentee after: Tianhua Institute of Chemical Machinery & Automation Co., Ltd. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: Sinopec Corp. Patentee before: Tianhua Chemical Machinery & Automation Research Inst. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |