CN203615340U - Novel combustion furnace employing annular wall gas protection - Google Patents
Novel combustion furnace employing annular wall gas protection Download PDFInfo
- Publication number
- CN203615340U CN203615340U CN201320385059.8U CN201320385059U CN203615340U CN 203615340 U CN203615340 U CN 203615340U CN 201320385059 U CN201320385059 U CN 201320385059U CN 203615340 U CN203615340 U CN 203615340U
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- gas
- protection
- combustion furnace
- protection gas
- wall
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Abstract
The utility model provides a combustion furnace used in petroleum refining and chemical production, and particularly relates to the combustion furnace employing annular wall gas protection technology. The combustion furnace comprises a combustor (1), a thermometer interface (2), a furnace wall protection gas open hole (3), a protection gas annular channel (4), a combustion furnace air exhaust opening (5), a gas turning ring (6), a gas conflux groove (7), a protection gas outlet (8), a protection gas inlet (9) and a support seat (10), wherein the gas conflux groove (7) and the protection gas outlet (8) are arranged in the gas turning ring (6). According to the utility model, protection gas is uniformly blown out from the axial direction, i.e., firstly, the protection gas is leaded in from the protection gas inlet (9), then arrives the gas conflux groove (7) in the gas turning ring (6) via the furnace wall protection gas open hole (3), and at last is uniformly blown out via the protection gas outlet (8). In this way, interference in main combustion flames by the protection gas can be reduced, a gas protection layer can be effectively formed along the furnace wall, and heat resistance of the combustion furnace is improved.
Description
Affiliated technical field
The utility model relates to a kind of combustion furnace in oil refining, Chemical Manufacture, especially a kind of ring wall gas shield class combustion furnace that adopts, at this with H
2s combustion furnace is main elaboration.
Background technology
Existing heating furnace, combustion furnace adopt ring wall gas shield technology by existing part between the combustion zone of burner and combustion chamber.So-called ring wall gas shield is exactly between the flame of main combustion zone and furnace wall heat-insulation layer, to increase one deck gas shield layer again, improves the heat resistance of combustion furnace.But in use, find just to start to occur coming off the service life that the insulating lining of combustion zone is still difficult to reach design, furnace wall is directly exposed in high temperature and burns inefficacy.After being simulated, three speed (temperature field, velocity field, a concentration field) of combustion furnace can find: in main combustion zone; ring wall protective gas is radially blown into from combustion furnace; the flame just in time coming with axial direction is crossing; because protective gas is difficult to accomplish to be steadily blown into; so just cause ring wall protective gas to produce disturbance to combustion flame, make flame occur irregular swing.Now, the irregular circulation of insulating lining is heated, thereby occurs heat fatigue, and then occurs that insulating lining comes off, and loses the defencive function to combustion furnace.
Utility model content
The purpose of this utility model: by from parallel with the flame ring wall protective gas that is axially blown into, make gas form one deck gas shield layer on furnace wall vertically, thereby reach the object that improves furnace wall heat resistance.
The purpose of this utility model is achieved in that wall protection gas open-celled structure is set in the taper connection structure of combustion furnace front end; introduce protective gas; and utilize the gas turns ring that is arranged on taper connection structure place, protective gas is blown into combustion chamber along the direction that is parallel to main combustion zone flame.Gas turns ring outer surface at taper connection structure place is offered gas flow guiding groove, for collecting protective gas.On steering ring, offer three row's small diameter circular protection gas outlets, in order to evenly to blow out collecting the protective gas coming, make furnace wall form one deck gas shield layer.
The technical solution of the utility model: the first, original scheme that is blown into ring wall protection gas from main chamber is changed in taper connection structure and is blown into protective gas; The second, change into from being axially blown into protective gas from being radially blown into the scheme of ring wall protective gas original.
Advantage of the present utility model:
(1) before improvement, easily combustion flame is produced to disturbance from the ring wall protective gas being radially blown into, make flame irregular fluctuation; Very little to combustion flame disturbance from the ring wall protective gas being axially blown into after improvement.Can avoid the erratic circulation in furnace wall to be heated by such improvement.
(2) scope that the gas shield film forming from the ring wall protective gas being radially blown into before improvement distributes is less; After improvement, can form forward the gas shield film that one deck distribution is wider from being blown into opening's edge furnace wall from the ring wall protective gas being axially blown into.Such improvement can better improve the heat resistance of combustion furnace.
Accompanying drawing explanation
Fig. 1 is for to design combustion furnace of the present utility model with reference to GB/150, and figure is installation diagram.
Fig. 2 is the taper connection structure partial enlarged drawing in Fig. 1.
In Fig. 1,2,1. burner, 2. thermometer boss, 3. wall protection gas perforate, 4. protective gas circular passage, 5. baker exhaust outlet, 6. gas turns ring, 7. gas collecting tray, 8. steering ring protection gas outlet, 9. protection gas import, 10. bearing
Fig. 3 is the steering ring 6 of the utility model gas feed place, with so that protective gas from being axially blown into.Be arranged on taper connection structure place in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model patent is described in further detail:
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment, the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
By protecting gas import 9 to be blown into gas in Fig. 2, then enter main chamber by wall protection gas perforate 3.Make the object of gas from being axially blown in order to reach; again via the drawn part of gas turns ring 6(Fig. 3) on gas collecting tray 7 collect gas; by three row's steering rings protections gas outlets 8 by protective gas from being axially evenly blown into; make to protect gas to form one deck gas shield layer along furnace wall, thereby improve the heat resistance of furnace wall.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. novel ring wall gas shield combustion furnace; its feature is; wall protection gas perforate (3) structure is set in the taper connection structure of combustion furnace front end; introduce protective gas; and utilize the gas turns ring (6) that is arranged on taper connection structure place, protective gas is blown into combustion chamber along the direction that is parallel to main combustion zone flame.
2. novel ring wall gas shield combustion furnace according to claim 1, is characterized in that: gas turns ring (6) outer surface at taper connection structure place is offered gas flow guiding groove (7), for collecting protective gas.
3. novel ring wall gas shield combustion furnace according to claim 1, is characterized in that: on steering ring, offer three row's small diameter circular protection gas outlets (8), in order to evenly to blow out collecting the protective gas coming, make furnace wall form one deck gas shield layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385059.8U CN203615340U (en) | 2013-07-01 | 2013-07-01 | Novel combustion furnace employing annular wall gas protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385059.8U CN203615340U (en) | 2013-07-01 | 2013-07-01 | Novel combustion furnace employing annular wall gas protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615340U true CN203615340U (en) | 2014-05-28 |
Family
ID=50767982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320385059.8U Expired - Fee Related CN203615340U (en) | 2013-07-01 | 2013-07-01 | Novel combustion furnace employing annular wall gas protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203615340U (en) |
-
2013
- 2013-07-01 CN CN201320385059.8U patent/CN203615340U/en not_active Expired - Fee Related
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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: 20140528 Termination date: 20150701 |
|
| EXPY | Termination of patent right or utility model |