CN203517796U - Oxygen-enriched combustor - Google Patents
Oxygen-enriched combustor Download PDFInfo
- Publication number
- CN203517796U CN203517796U CN201320572577.0U CN201320572577U CN203517796U CN 203517796 U CN203517796 U CN 203517796U CN 201320572577 U CN201320572577 U CN 201320572577U CN 203517796 U CN203517796 U CN 203517796U
- Authority
- CN
- China
- Prior art keywords
- fumarole
- oxygen
- nozzle
- center
- gas pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gas Burners (AREA)
Abstract
The utility model discloses an oxygen-enriched combustor, and relates to the technical field of manufacture and use of metallurgy processing equipment. An oxygen pipe in an insertion section part of the combustor is arranged in a gas pipe, and a nozzle is connected between the front end of the oxygen pipe and the front end of the gas pipe, wherein the nozzle is provided with a center gas orifice for spraying oxygen and a plurality of outer side gas orifices for spraying gas. The outer port of the center gas orifice is located in front of the outer ports of the outer side gas orifices, and a cooling medium loopback channel is formed outside the gas pipe. By the utilization of the combustor, the problems that an existing oxygen-enriched combustor is poor in stability when low molecular weight gas is combusted, flame rigidity is weak, deformability and spreadability are bad, so that oxidization and decarburization of materials in a furnace can be generated can be solved.
Description
Technical field
The utility model relates to metallurgical technology equipment manufacturing technology field, and that in especially a kind of large-scale metallurgical industrial furnace, uses usings burner and the using method thereof of high-load oxygen as the gaseous fuel of combustion-supporting gas.
Background technology
In metallurgy industry, the use of oxygen-enriched combustion technology can extend converter life, improves the quality of products, and improves fuel economy.Along with improving constantly of combustion-supporting oxygen concentration, the high oxygen-enriched burner of a kind of efficient, energy-saving and environmental protection, long service life has important economy and technological value.Brainstrust never stopped to the improvement research of oxygen-enriched burner both at home and abroad, but effect is always not ideal enough.
(notification number is Chinese utility model patent " high oxygen-enriched burner ": CN2366695Y, the day for announcing is on March 1st, 2000), this patent is also a kind ofly to using oxygen content and be greater than 90% oxygen as the burner of combustion-supporting gas, there is cartridge, oxygen supplying tube and heat insulation burner, burner and cartridge are coaxially set in cartridge front end, and axial location offers the fuel nozzle ports being connected with cartridge.On burner with on the equidistant same circumference in fuel nozzle ports outer ring, be evenly equipped with oxygen spout, between oxygen spout and oxygen supplying tube, cartridge periphery is provided with annular pressure stabilizing cavity.This high oxygen-enriched burner arranges combustion-supporting oxygen ejection air-flow and is multiply and is looped around outside fuel gas stream at burner place, make combustion-supporting oxygen before mixing with fuel gas, sneak into appropriate furnace gas, thereby reach, reduced flame temperature, increased flame kinetic energy, the object of uniformity of temperature profile in stove.This high oxygen-enriched burner but when low-molecular-weight gas such as adopting natural gas, hydrogen is made fuel gas, its kinetic energy is lower, flame is easily dispersed; When burner tilts to install, flame easily deforms and shortens especially, and this not only can have influence on the uniformity of Temperature Distribution in stove, and is not suitable for adopting in the larger metallurgical body of heater of the degree of depth; Sixty-four dollar question is: the oxygen in fuel gas periphery easily makes material oxidation in stove, causes the oxygen content of matallurgical products to exceed standard.
Utility model content
The purpose of this utility model is to provide a kind of oxygen-enriched burner, this burner can solve existing oxygen-enriched burner poor stability when the combustion gas of burning low-molecular-weight, flame rigidity is weak, distortion and spreadability bad, and oxidation and the decarburization problem that can cause material in stove.
In order to address the above problem, this oxygen-enriched burner by the following technical solutions: have the place ahead of being positioned at, length is greater than the inserting paragraph of 5000 millimeters and is positioned at the interface section two parts at rear, includes oxygen hose, Gas Pipe and nozzle; In described inserting paragraph part, described oxygen hose is contained in described Gas Pipe, between the leading section of described oxygen hose and the leading section of described Gas Pipe, is connected described nozzle; Described nozzle You Yige center fumarole and be looped around a plurality of outsides fumarole outside this center fumarole, the center fumarole of described nozzle is communicated with the endoporus of described oxygen hose, each outside fumarole of described nozzle is communicated with described Gas Pipe and is provided with outward by outer tube and spacer tube is separated to form between this outer tube and described Gas Pipe cooling medium loopback passage with the air flue of described Gas Pipe, cooling medium loopback passage is by barrier ring seal; Inlet union and the outlet connection of described cooling medium loopback passage, and Gas Pipe inlet union and oxygen hose inlet union are all located in described interface section part.
Further, in the high oxygen-enriched burner of this top-blown converter, each outside fumarole and the center fumarole of described nozzle are straight hole; The cross-sectional area sum of each outside fumarole of described nozzle: fumarole cross-sectional area=1:2.5～6, center of described nozzle, this ratio is too small or excessively mostly will cause the unbalance of combustion-supporting oxygen and burning gases, when ratio is excessive, cause the surplus of burning gases, when ratio is too small, cause the surplus of combustion-supporting oxygen, thereby affect efficiency of combustion; The length of the center fumarole of described nozzle is 130～180 millimeters, and the too small rigidity that can affect flame of this length, crosses the stability that conference affects flame; The diameter of the center fumarole of described nozzle: described oxygen hose diameter of bore=1:1.2～1.57;
The diameter of the center fumarole of described nozzle: the fumarole center, outside of described nozzle around diameter=1:2.43, oxygen-supplying amount when the too small meeting of this ratio reduces burner combustion, while constantly increasing gas discharge, will affect burner combustion efficiency, even cause flame-out, when this ratio, cross the eject momentum that senior general reduces combustion-supporting oxygen, affect the rigidity of combustion flame; The external port of the center fumarole of described nozzle can be arranged on the place ahead of the external port that is positioned at described each outside fumarole, and the distance of the external port of the external port of the center fumarole of described nozzle and described each outside fumarole is 3～15 millimeters.
For convenience of the replacing of described nozzle, nozzle is preferably and is threaded with the leading section of Gas Pipe.
The using method of above-mentioned oxygen-enriched burner is: by the inlet union of described oxygen hose, by oxygen regulating valve and oxygen content >95%, the source of oxygen that pressure is 0.3～0.5MPa connects; The gas source that is 0.4MPa by gas control valve with pressure by Gas Pipe inlet union is connected; The inlet union of described cooling medium loopback passage is connected to cooled compressed air source or cooling water source with outlet connection; Control gas discharge: oxygen-enriched combusting is carried out in the output of oxygen flow=1:1.8～2.2.
Fuel is preferably used natural gas, and fuel and combustion-supporting oxygen are preferably by liquified natural gas, liquid oxygen gasified, and their temperature is relatively low, and burner is had to certain cooling effect.
Maximum gas flow that fuel is adjustable is 2090Nm
3/ h, maximum stream flow that combustion-supporting oxygen is adjustable is 4000 Nm
3/ h, turndown ratio, burner regulation ratio is 1:5.
Under normal work, fuel gas flow is 1630Nm
3/ h, air pressure is 0.4 MPa; The normal gas flow of combustion-supporting oxygen is 2900 Nm
3/ h, air pressure is 0.3 MPa.
The front end of oxygen-enriched burner preferably adopts resistant to elevated temperatures alloy material, with prolonging combustion device service life.
The front end length of oxygen-enriched burner is 8000 millimeters, can enter furnace length according to the number of the raw material in stove or the depth adjustment burner of burner hearth, can adapt to the metallurgical body of heater of various furnace depths.
Owing to having adopted technique scheme, the utility model compared with prior art has following beneficial effect:
1, combustion stability is good, and burned for long time flame profile remains unchanged;
2, flame spreadability is good, and burner flame length can reach 6 meters to 6.5 meters;
3, flame rigidity is good by force, even if tilt to install, the flame of its ejection can not deform yet;
4, fuel gas surrounds oxygen, makes material isolation in oxygen and stove, therefore can prevent oxidation and the decarburization of material in stove;
5, because the inserting paragraph of oxygen-enriched burner is longer, and the outer coolant guiding channel that is provided with loopback, therefore can according to the raw material in stove number or the depth adjustment burner of burner hearth insert length in stove, the needs that can adapt to the metallurgical body of heater of various furnace depths, and strengthened cooling effect, prolonging combustion device service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model oxygen-enriched burner.
Fig. 2 is the partial enlarged view at B place in Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment 1:
Oxygen-enriched burner shown in Fig. 1, Fig. 2, has that to be positioned at the place ahead length be the inserting paragraph L1 of 8000 millimeters, at the rear of inserting paragraph L1, is interface section L2.It is the oxygen hose 1 of 110 millimeters that the front end that is positioned at whole interface section L2 and inserting paragraph L1 has an internal orifice dimension A2 outward, oxygen hose 1 right-hand member dogleg section in Fig. 1 is oxygen tube junction, the left end of oxygen hose 1 in Fig. 1 is front end, the front end of oxygen hose 1 is threaded with nozzle 8, the front end of oxygen hose 1 is communicated with the center fumarole of nozzle 8 central authorities, and is threaded connection the effect that mode can also play timely replacing nozzle 8.In the part of inserting paragraph L1, oxygen hose 1 is contained in Gas Pipe 3, nozzle 8 is between the leading section of oxygen hose 1 and the leading section of Gas Pipe 3, and the center fumarole of nozzle 8 is surrounded with 6 equally distributed outside fumaroles outward, and each outside fumarole of nozzle 8 is communicated with the air flue of Gas Pipe 3; Each outside fumarole and the center fumarole of nozzle 8 are straight through hole, the cross-sectional area sum of each outside fumarole of nozzle 8 is 1526 square millimeters, the center fumarole cross-sectional area of nozzle 8 is 3815 square millimeters, i.e. the cross-sectional area sum of each outside fumarole of nozzle 8: the center fumarole cross-sectional area of nozzle 8 is 1:2.5; The length L 4 of the center fumarole of nozzle 8 is 130 millimeters.The diameter A1 of the center fumarole of nozzle 8 is 70 millimeters, and oxygen hose 1 diameter of bore A2 is 110 millimeters, the fumarole center, outside of nozzle 8 around diameter A3, be 170 millimeters.Before the outlet of each outside fumarole of nozzle 8, there is an expansion regions, the external port of the center fumarole of nozzle 8 is positioned at the place ahead of the external port of each outside fumarole, the distance L 3 of the external port of the external port of the center fumarole of nozzle and each outside fumarole is 3 millimeters, and the angle that this distance can be controlled combustion gas expansion is to make the combustion gas can be fully and combustion-supporting oxygen mix.Gas Pipe 3 is outer to be also provided with by outer tube 7 and spacer tube 5 is separated to form between this outer tube 7 and Gas Pipe 3 cooling medium loopback passage, and cooling medium loopback passage is sealed by barrier ring 9; The rear portion of oxygen hose 1 and Gas Pipe 3 is all welded with adpting flange, and the rear portion of oxygen hose 1 and Gas Pipe 3 is connected with connecting bolt 2 by these two adpting flanges, between these two adpting flanges, sealing gasket is housed; The rear end of middle spacer tube 5 is also by adpting flange, bolt 4 with the rear portion of Gas Pipe 3 and is contained in two sealing gaskets between adpting flange and is connected; The rear end of outer tube 7 is to be also connected by adpting flange, sealing gasket and bolt 6 with the rear portion of middle spacer tube 5, inlet union 11 and the outlet connection 10 of above-mentioned three pairs of adpting flanges and cooling medium loopback passage, and Gas Pipe inlet union 12 and oxygen hose inlet union are all located in interface section L2 part, part before the inlet union 11 of cooling medium loopback passage is inserting paragraph L1, and the length of inserting paragraph L1 is 8000 millimeters.
The using method of this oxygen-enriched burner is: first the inserting paragraph of oxygen-enriched burner is inserted to suitable length according to the number of the raw material in stove or the degree of depth of burner hearth, by the inlet union of oxygen hose 1, by oxygen regulating valve and oxygen content >95%, the storage gas tank that has been just 0.3～0.5MPa oxygen by liquid oxygen vapor pressure connects; The inlet union of Gas Pipe 3 12 is connected from liquid state natural gas tank gasification, that pressure is 0.4MPa with firm by gas control valve; The inlet union of cooling medium loopback passage is connected in cooling recirculation system with outlet connection, by regulating oxygen regulating valve and gas control valve to control gas discharge: the oxygen-enriched combusting of lighting a fire under the output quantity state of oxygen flow=1:1.8 ~ 2.2.By liquified natural gas, liquid oxygen gasified and come fuel gas and oxygen temperature lower, burner is had to certain cooling effect.Under the normal work of oxygen-enriched burner of this specification, fuel gas flow is 1630Nm
3/ h, air pressure is 0.4 MPa, the normal gas flow of combustion-supporting oxygen is 2900 Nm
3/ h, air pressure is 0.3 MPa, combustion flame length reaches 3500～4000 millimeters.When burning is carried out, high pressure oxygen jet penetrates from nozzle 8 center fumaroles, from outside fumarole, the natural gas of ejection is rolled up to the place ahead of burner and is mixed, burns.In stove, temperature is too low or when too high, can fuel metering, the flow of two kinds of gases of combustion-supporting oxygen, and maximum gas flow that fuel is adjustable is 2090Nm
3/ h, maximum stream flow that combustion-supporting oxygen is adjustable is 4000 Nm
3/ h, turndown ratio, burner regulation ratio is 1:5, by regulating the flow of these two kinds of gases can control temperature in stove.
Embodiment 2:
As shown in Fig. 1～2, in the present embodiment, the cross-sectional area sum of each outside fumarole of nozzle 8 is 1526 square millimeters, the center fumarole cross-sectional area of nozzle 8 is 9156 square millimeters, i.e. the cross-sectional area sum of each outside fumarole of nozzle 8: the center fumarole cross-sectional area of nozzle 8 is 1:6; The diameter A1 of the center fumarole of nozzle 8 is 70 millimeters, and oxygen hose 1 diameter of bore A2 is 84 millimeters, and the center fumarole of nozzle 8 is surrounded with 8 equally distributed outside fumaroles outward, the fumarole center, outside of nozzle 8 around diameter A3, be 170 millimeters; The length L 4 of the center fumarole of nozzle 8 is 180 millimeters; The distance L 3 of the external port of the external port of the center fumarole of nozzle and each outside fumarole is 15 millimeters.The other parts of the present embodiment are identical with above-described embodiment 1.
Claims (3)
1. an oxygen-enriched burner, includes oxygen hose (1), Gas Pipe (3) and nozzle (8), it is characterized in that: have the place ahead of being positioned at, length is greater than the inserting paragraph (L1) of 5000 millimeters and is positioned at interface section (L2) two parts at rear; In described inserting paragraph (L1) part, described oxygen hose (1) is contained in described Gas Pipe (3), between the leading section of described oxygen hose (1) and the leading section of described Gas Pipe (3), is connected described nozzle (8); Described nozzle (8) You Yige center fumarole and be looped around a plurality of outsides fumarole outside this center fumarole, the center fumarole of described nozzle (8) is communicated with the endoporus of described oxygen hose (1), and each outside fumarole of described nozzle (8) is communicated with the air flue of described Gas Pipe (3); Described Gas Pipe (3) is outer be provided with by outer tube (7) and be arranged in this outer tube and described Gas Pipe (3) between the cooling medium loopback passage that is separated to form of spacer tube (5), cooling medium loopback passage is sealed by barrier ring (9); The inlet union (11) of described cooling medium loopback passage and outlet connection (10), and Gas Pipe inlet union (12) and oxygen hose inlet union are all located in described interface section (L2) part.
2. oxygen-enriched burner according to claim 1, is characterized in that: each outside fumarole and the center fumarole of described nozzle (8) are straight hole; The cross-sectional area sum of each outside fumarole of described nozzle (8): fumarole cross-sectional area=1:2.5～6, center of described nozzle (8); The length (L4) of the center fumarole of described nozzle (8) is 130～180 millimeters; The diameter (A1) of the center fumarole of described nozzle (8): described oxygen hose (1) diameter of bore (A2)=1:1.2～1.57; The diameter (A1) of the center fumarole of described nozzle (8): the fumarole center, outside of described nozzle (8) around diameter (A3)=1:2.43.
3. oxygen-enriched burner according to claim 1, is characterized in that: described nozzle (8) with the leading section of Gas Pipe (3) for being threaded; The external port of the center fumarole of described nozzle (8) is positioned at the place ahead of the external port of described each outside fumarole, and the distance (L3) of the external port of the external port of the center fumarole of described nozzle and described each outside fumarole is 3～15 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572577.0U CN203517796U (en) | 2013-09-16 | 2013-09-16 | Oxygen-enriched combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572577.0U CN203517796U (en) | 2013-09-16 | 2013-09-16 | Oxygen-enriched combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203517796U true CN203517796U (en) | 2014-04-02 |
Family
ID=50376725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320572577.0U Expired - Fee Related CN203517796U (en) | 2013-09-16 | 2013-09-16 | Oxygen-enriched combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203517796U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453525A (en) * | 2013-09-16 | 2013-12-18 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
| CN108800119A (en) * | 2018-07-23 | 2018-11-13 | 长沙有色冶金设计研究院有限公司 | A kind of smelting furnace undercurrent spray combustion device |
| CN112050209A (en) * | 2020-09-08 | 2020-12-08 | 合肥依科普工业设备有限公司 | Forced air cooling full-oxygen multi-stage burner |
| CN112683074A (en) * | 2020-12-16 | 2021-04-20 | 铜陵德兴机械制造有限责任公司 | Top-blown furnace spray gun and special maintenance method thereof |
-
2013
- 2013-09-16 CN CN201320572577.0U patent/CN203517796U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453525A (en) * | 2013-09-16 | 2013-12-18 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
| CN108800119A (en) * | 2018-07-23 | 2018-11-13 | 长沙有色冶金设计研究院有限公司 | A kind of smelting furnace undercurrent spray combustion device |
| CN112050209A (en) * | 2020-09-08 | 2020-12-08 | 合肥依科普工业设备有限公司 | Forced air cooling full-oxygen multi-stage burner |
| CN112683074A (en) * | 2020-12-16 | 2021-04-20 | 铜陵德兴机械制造有限责任公司 | Top-blown furnace spray gun and special maintenance method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103453525B (en) | The using method of oxygen-enriched burner | |
| CN101614394B (en) | Method and device thereof for stably burning various fuel gases with high-low calorific values | |
| CN203517796U (en) | Oxygen-enriched combustor | |
| CN107166395B (en) | A kind of self-loopa low nitrogen oxide swirling burner | |
| CN107218602A (en) | A kind of low heat value/low-pressure gas burner | |
| CN111256111A (en) | Efficient wall-attached air system and method for preventing water-cooled wall from high-temperature corrosion of front-wall and rear-wall opposed combustion boiler | |
| CN201652349U (en) | Double-gas fuel burner | |
| CN201697128U (en) | Oxygen-rich combustion device | |
| CN203517787U (en) | Pure oxygen burner | |
| CN110469847B (en) | Water-cooled fuel gas ultralow nitrogen combustion device | |
| CN104279561A (en) | External mixing type glass polishing combustor | |
| CN204460213U (en) | A kind of porous gas jet burner | |
| CN104296142A (en) | Fuel gas flame-free pure oxygen burner | |
| CN109973994B (en) | Low-nitrogen burner | |
| CN103868055A (en) | Regenerative combustion device applicable to stable combustion of compounded tangent-flow and direct-flow gas with low calorific value | |
| CN203744238U (en) | Tangential and direct flows combined combustion stabilizing and heat storage combusting device suitable for low-calorific-value fuel gas | |
| CN113757646B (en) | Flue gas recycling combustion system for injecting natural gas and oxygen by using venturi tube | |
| CN210004390U (en) | oxygen-enriched flat flame burner | |
| CN209977990U (en) | Low-nitrogen full-premixing steam boiler | |
| CN207112801U (en) | The nozzle and burner and gas kitchen ranges of a kind of multi-staged air ejection structure | |
| CN104501169B (en) | For the First air note oxygen conglomerate integration device that rubbish oxygen enrichment burns | |
| CN103438452A (en) | Pure oxygen combustor | |
| CN207378815U (en) | A kind of linear low nitrogen gas burner | |
| CN202066010U (en) | Low oxygen burner | |
| CN205245170U (en) | Four -channel gas oxygen -enriched combustor in gas cupola furnace |
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: 20140402 Termination date: 20140916 |
|
| EXPY | Termination of patent right or utility model |