CN103353113A - Heating furnace with turbine tempering-proof premix nozzles - Google Patents
Heating furnace with turbine tempering-proof premix nozzles Download PDFInfo
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- CN103353113A CN103353113A CN2012102466755A CN201210246675A CN103353113A CN 103353113 A CN103353113 A CN 103353113A CN 2012102466755 A CN2012102466755 A CN 2012102466755A CN 201210246675 A CN201210246675 A CN 201210246675A CN 103353113 A CN103353113 A CN 103353113A
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- 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
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Abstract
The invention discloses a heating furnace with turbine tempering-proof premix nozzles. The heating furnace comprises a furnace body with a built-in hearth, a first nozzle group and a second nozzle group, as well as a fume pipeline, wherein each of the first nozzle group and the second nozzle group comprises at least three nozzles used for ejecting the mixture of combustible gas and oxidizing air into the hearth; the fume pipeline is connected with one end wall of the furnace body and is used for discharging the fume generated in the hearth to a chimney; each nozzle in the first nozzle group and the second nozzle group is a turbine tempering-proof premix nozzle which comprises a combustible gas pipeline with a closed tail end, an oxidizing air pipeline sleeving on the periphery of the combustible gas pipeline, and a turbine device arranged between the outer wall of the combustible gas pipeline and the inner wall of the oxidizing air pipeline; a plurality of air holes are formed in the wall of the combustible gas pipeline in the moving direction of the oxidizing air prior to the turbine device, so as to eject the combustible gas into the oxidizing air pipeline, and premix the combustible gas and the oxidizing air before the combustible gas and the oxidizing air are ejected into the hearth through the turbine device.
Description
Technical field
The present invention relates to a kind of heating furnace, particularly a kind of heating furnace that adopts fuel gas.
Background technology
As everyone knows, Industrial Stoves are a kind of equipment large, that pollution is heavy that consumes energy.All advocate energetically under the overall situation of energy-saving and emission-reduction in countries in the world, how existing Industrial Stoves are carried out the energy-saving and emission-reduction transformation, become the factor that those skilled in the art must consider when this kind equipment of design.
Take the heating furnace that adopts fuel gas as example, it extensively adopts following nozzle structure: air is supplied to the burner hearth entrance by different pipelines respectively with combustion gas and in the mixed combustion heat release of burner hearth porch.This nozzle structure has following defective: on the one hand, air and combustion gas can not get abundant mixing; On the other hand, the used air capacity of burning is excessive; The efficiency of combustion that causes heating furnace is low and concentration carbon monoxide in the flue gas is high.
Such as Chinese patent No. 200920072822.5 disclosed a kind of heating furnaces mixed gas and natural gas convertible burner and combustion systems thereof.This burner is mainly by the shell of centre wind jet pipe, natural gas jet pipe, mixed gas jet pipe, warm-air pipe and the telescoping structure that air-distributing disc forms.The centre position of warm-air pipe is provided with the primary and secondary air adjusting sleeve pipe, and air-distributing disc is as wind and Secondary Air exit passageway.During this burner work, two kinds of combustion gas can be switched mutually, and the combustion gas that sprays by gas nozzle mixes rear ejection burner realization burning operation with the hot-air of air-distributing disc, but this nozzle structure complexity, combustion gas and air are without abundant premix and without fireproof tempering device.
No. 02220905.0 disclosed a kind of straight-tube premix gan burner of Chinese patent and for example, it comprises by the flame air inlet pipe, gas nozzle, divergent cone, a wind inlet, the blending straight tube, the flame stabilization cover, premix cyclonic current device, fire jetting hole, or premix gas jet orifice, straight tube premixed flame cylinder with the fire jetting hole formation, muffler, regulate aerofoil, the air channel, a wind rectifier, the Secondary Air cyclone, refractory brick, housing, and igniter, flame monitor, the solenoid stabilizer valve valve module also comprises the added diffusion nozzle air inlet pipe of setting, center divergent nozzle or belt divergent nozzle.The disclosed nozzle arrangements of No. 02220905.0, this patent is complicated, only realized the premix of combustion gas and part air and without fireproof tempering device.
Therefore, provide a kind of heating furnace with the nozzle that can realize the premix function of preventing back-fire to become in the industry urgent problem.
Summary of the invention
The purpose of this invention is to provide a kind of heating furnace with turbine anti-backfire premixing nozzle, this heating furnace can fully improve efficiency of combustion and reduce the concentration of the carbon monoxide in the flue gas.
The invention provides a kind of heating furnace with turbine anti-backfire premixing nozzle, it comprises: body of heater is provided with the burner hearth for accommodating workpiece to be heated in the body of heater; The first nozzle sets and second nozzle group, the first nozzle sets and second nozzle group comprise respectively along the longitudinal direction of body of heater and are disposed at least three nozzles on the sidewall of body of heater, spray into the heat release of burner hearth internal combustion with the mixture with fuel gas and combustion air; And flue, flue is connected on the end wall of body of heater and is expelled to chimney with the flue gas that will produce in the burner hearth.The first nozzle sets and each nozzle in the second nozzle group of this heating furnace are turbine anti-backfire premixing nozzle.This turbine anti-backfire premixing nozzle comprise endcapped inflammable gas pipeline, be nested with the combustion air pipeline of inflammable gas pipeline periphery and be arranged on the outer wall of inflammable gas pipeline and the inwall of combustion air pipeline between turbine apparatus.Wherein, the wall before the mobile direction of combustion air is positioned at turbine apparatus of inflammable gas pipeline is offered several pores, so that fuel gas is sprayed in the combustion air pipeline, so that fuel gas and combustion air premix before spraying into burner hearth via turbine apparatus.
Wherein, the inflammable gas pipeline of each nozzle in the first nozzle sets and the second nozzle group can be connected in identical fuel gas supply source by pipeline.
Selectively, the inflammable gas pipeline of each nozzle in the inflammable gas pipeline of each nozzle in the first nozzle sets and the second nozzle group can be connected to two different fuel gas supply sources by pipeline.
Preferably, the first nozzle sets and second nozzle group are arranged at the relative both sides of body of heater with respect to the longitudinal axis of body of heater, at least three nozzles of the first nozzle sets and the successively vis-a-vis setting of at least three nozzles of second nozzle group, with the mixture of fuel gas and combustion air so that the mode of blowing is sprayed in the burner hearth.
Wherein, turbine apparatus is unidirectional turbine apparatus, and unidirectional turbine apparatus allows to spray into burner hearth and prevent that the gas backstreaming in the burner hearth from entering the combustion air pipeline from the fuel gas of combustion air pipeline and the mixture of combustion air.
Selectively, the combustion air in the combustion air pipeline can be from the air of environment or by the air of miscellaneous equipment preheating.
Preferably, this heating furnace also can comprise the air preheater that is arranged in the flue, and the combustion air in the combustion air pipeline can be the air that is preheated from air preheater.
Preferably, several pores can be divided into along the circumferential direction of inflammable gas pipeline at least two groups, and every group of pore comprises at least four pores.
More preferably, several pores can uniformly-spaced be divided at least three groups along the circumferential direction of inflammable gas pipeline, and every group of pore comprises at least five pores that uniformly-spaced arrange along the longitudinal direction of inflammable gas pipeline, such as, several pores can be divided into five groups or six groups, and every group comprises eight or ten pores.
Particularly, turbine apparatus can be arranged on an end of the contiguous burner hearth of turbine anti-backfire premixing nozzle, and several pores on the wall of inflammable gas pipeline can be positioned at the side away from burner hearth of turbine apparatus.
Selectively, fuel gas is coal gas, and heating furnace is ceramic kiln.
Selectively, fuel gas is natural gas, and heating furnace is the stainless steel annealing stove.
Preferably, the first nozzle sets and second nozzle group can comprise respectively along the longitudinal direction of body of heater and uniformly-spaced be arranged on the sidewall of body of heater three or three with top nozzle, such as five or six nozzles.
Selectively, this heating furnace also can comprise first order air preheating system and second level air preheating system.First order air preheating system comprises air compressor, the first air preheater and generator; The first air preheater is arranged in the flue and has flue gas stream and air flow circuit; Air compressor will be from sending in the air flow circuit of the first air preheater by pipeline after the air pressurized of external environment condition in case with the high-temperature flue gas heat exchange of the flue gas stream of first air preheater of flowing through; The air of the preheating of pressurizeing of flowing out from the air flow circuit of the first air preheater is sent into generator by pipeline and is used for generating; Air after the generator acting is sent into the combustion air pipeline of each nozzle of the first nozzle sets through pipeline.Second level air preheating system comprises the second air preheater; The second air preheater is arranged at the downstream of the first air preheater in flue; The second air preheater has flue gas stream and air flow circuit; Send into by pipeline from the air of external environment condition in the air flow circuit of the second air preheater so as with the high-temperature flue gas heat exchange of the flue gas stream of second air preheater of flowing through; Sent into the combustion air pipeline of each nozzle of second nozzle group through pipeline by the air of the second air preheater preheating.
The invention has the beneficial effects as follows: by adopting turbine anti-backfire premixing nozzle, can realize the premix function of preventing back-fire, can fully improve efficiency of combustion and reduce the concentration of the carbon monoxide in the flue gas; Adopt the first nozzle sets and second nozzle group the mode of blowing is carried the mixture of combustion air and fuel gas in the burner hearth, can further improve efficiency of combustion; In addition, by adopting first order air preheating system and second level air preheating system, can recycle fully fume afterheat, by adopting air compressor to increase air pressure, be conducive to air in the first air preheater with flue gas heat exchange, can improve the fume afterheat utilization rate, by adopting generator, the energy of the air of pressurization preheating is being used for suitably being converted into electric energy before combustion-supporting, avoid energy dissipation, still can fully improve efficiency of combustion to the air after the generator acting as combustion air.
Description of drawings
Fig. 1 shows the schematic diagram with heating furnace of turbine anti-backfire premixing nozzle of the present invention.
Fig. 2 shows the enlarged diagram of the turbine anti-backfire premixing nozzle of the heating furnace among Fig. 1.
The specific embodiment
First embodiment of the invention, the heating furnace 100 with turbine anti-backfire premixing nozzle is ceramic kiln, wherein, fuel gas adopts coal gas.
Please refer to Fig. 1, heating furnace 100 comprises body of heater 110, the first nozzle sets 130, second nozzle group 131, flue 150, air preheater 170 and chimney 190.
Be provided with the burner hearth (not shown) for accommodating workpiece (not shown) in the body of heater 110.Flue 150 is connected on the aft bulkhead of body of heater 110 and is expelled to chimney 190 with the flue gas that will produce in the burner hearth.
Send into the first nozzle sets 130 and second nozzle group 131 as combustion air by the air after air preheater 170 preheatings through pipeline 1702.
The first nozzle sets 130 and second nozzle group 131 are arranged at respectively with respect to the longitudinal axis of body of heater 110 on the two side of body of heater 110 and provide to burner hearth with the mixture with fuel gas and air.In this embodiment, the first nozzle sets 130 and second nozzle group 131 comprise respectively three nozzles that uniformly-spaced arrange along the longitudinal direction of body of heater 110.Wherein, three nozzles of the first nozzle sets 130 and three successively vis-a-vis settings of nozzle of second nozzle group 131, with the mixture of fuel gas and air so that the mode of blowing is sent in the burner hearth.
Please refer to Fig. 2, the first nozzle sets 130 of the heating furnace 100 of this embodiment and each nozzle in the second nozzle group 131 are turbine anti-backfire premixing nozzle.This turbine anti-backfire premixing nozzle comprise endcapped inflammable gas pipeline 1301, be nested with the combustion air pipeline 1305 of inflammable gas pipeline 1301 peripheries and be arranged on the outer wall of inflammable gas pipeline 1301 and the inwall of combustion air pipeline 1305 between turbine apparatus 1309.
Wherein, be supplied to the entrance 1303 of inflammable gas pipeline 1301 from the fuel gas of fuel gas supply source (not shown) by pipeline (not shown), and be delivered to the entrance 1307 of combustion air pipeline 1305 from the air after being preheated of air preheater 170 through pipeline.
In this embodiment, turbine apparatus 1309 is arranged on an end of the contiguous burner hearth of turbine anti-backfire premixing nozzle.Turbine apparatus 1309 along the upstream side place on the flow direction of combustion air, particularly, the side away from burner hearth at turbine apparatus 1309, offer several pores 1308 on the wall of inflammable gas pipeline 1301, that is, the wall before the mobile direction of combustion air is positioned at turbine apparatus 1309 of inflammable gas pipeline 1301 is offered several pores 1308.Particularly, several pores 1308 uniformly-spaced are divided into three groups along the circumferential direction of inflammable gas pipeline 1301, and every group of pore comprises five pores 1308 that uniformly-spaced arrange along the longitudinal direction of inflammable gas pipeline 1301.
Thus, the fuel gas in the inflammable gas pipeline 1301 will spray in the combustion air pipeline 1305 by pore 1308, so that fuel gas and combustion air spray into burner hearth via turbine apparatus 1309 first again behind combustion air pipeline 1305 interior premixs.
In this embodiment, turbine apparatus 1309 is unidirectional turbine apparatus, and its permission sprays into burner hearth and prevents that the gas backstreaming in the burner hearth from entering combustion air pipeline 1305 from the fuel gas of combustion air pipeline 1305 and the mixture of combustion air.
According to a kind of alternate embodiments of the present invention, the heating furnace that is to have turbine anti-backfire premixing nozzle with the first embodiment difference is the stainless steel annealing stove, and fuel gas is natural gas.
According to another kind of alternate embodiments of the present invention, be that with the first embodiment difference air preheater can adopt heat regenerator, namely, heat storage by the solid matter formation, heat is passed to cryogen from high temperature fluid, after thermal medium reached uniform temperature by the heat solid material first, cold medium was heated by solid matter again, made it to reach the purpose that heat transmits.According to this alternate embodiments, can adopt two groups of heat regenerators that are used alternatingly to replace air preheater.
According to another alternate embodiments of the present invention, be that with the first embodiment difference this heating furnace can comprise first order air preheating system and second level air preheating system.
Air compressor, the first air preheater, generator and corresponding pipeline and circuit consist of first order air preheating system.Wherein, enter air compressor to be forced into about 0.5 MPa from the air of external environment condition through the first air introduction pipe line, the air after the pressurization enters the first air preheater through pipeline.The first air preheater is arranged in the flue and has flue gas stream and air flow circuit.Air after the pressurization send in the air flow circuit of the first air preheater in case with the high-temperature flue gas heat exchange of the flue gas stream of first air preheater of flowing through.The air of the preheating of pressurizeing of flowing out from the air flow circuit of the first air preheater is sent into generator by pipeline and is used for generating.In the present embodiment, generator is turbine generators, and the air of its preheating of will pressurizeing imports turbo-expander expansion acting and drives generator, for example blast-furnace top gas recovery turbine generator (TRT).Air after the generator acting is sent into the combustion air pipeline of each nozzle of the first nozzle sets through pipeline with as combustion air.
The second air preheater and respective lines consist of second level air preheating system.The second air preheater is positioned at the downstream of the first air preheater in flue, with the waste heat of further recycling from the flue gas of the first air preheater outflow.In this embodiment, the second air preheater has identical structure with the first air preheater.Air from external environment condition enters the second air preheater preheating through the second air introduction pipe line.Sent into the combustion air pipeline of each nozzle of second nozzle group through pipeline by the air of the second air preheater preheating with as combustion air.
Although described preferred embodiment of the present invention in detail at this, but should be understood that the present invention is not limited to the concrete structure of describing in detail and illustrating here, in the situation that does not depart from the spirit and scope of the invention, can be realized by those skilled in the art other modification and variant.For example, each nozzle sets can select to adopt more than or be less than three nozzle, adopts two, four or six nozzles such as every group.In addition, system's temperature and pressure parameter everywhere can suitably be chosen in scope disclosed in this invention according to concrete application conditions.
Claims (10)
1. heating furnace with turbine anti-backfire premixing nozzle comprises:
Body of heater is provided with the burner hearth for accommodating workpiece to be heated in the described body of heater;
The first nozzle sets and second nozzle group, described the first nozzle sets and described second nozzle group comprise respectively along the longitudinal direction of described body of heater and are disposed at least three nozzles on the sidewall of described body of heater, spray into the heat release of described burner hearth internal combustion with the mixture with fuel gas and combustion air; And
Flue, described flue are connected on the end wall of described body of heater and are expelled to chimney with the flue gas that will produce in the described burner hearth;
It is characterized in that:
Each nozzle in described the first nozzle sets and the described second nozzle group is turbine anti-backfire premixing nozzle, described turbine anti-backfire premixing nozzle comprises the inflammable gas pipeline of endcapped, be nested with the combustion air pipeline in described inflammable gas pipeline periphery, and be arranged on turbine apparatus between the inwall of the outer wall of described inflammable gas pipeline and described combustion air pipeline, wherein, the wall before the mobile direction of combustion air is positioned at described turbine apparatus of described inflammable gas pipeline is offered several pores, fuel gas is sprayed in the described combustion air pipeline, so that fuel gas and combustion air premix before spraying into described burner hearth via described turbine apparatus.
2. the heating furnace with turbine anti-backfire premixing nozzle as claimed in claim 1, it is characterized in that, described the first nozzle sets and described second nozzle group are arranged at the relative both sides of described body of heater with respect to the longitudinal axis of described body of heater, the successively vis-a-vis setting of described at least three nozzles of described at least three nozzles of described the first nozzle sets and described second nozzle group, with the mixture of fuel gas and combustion air so that the mode of blowing is sprayed in the described burner hearth.
3. the heating furnace with turbine anti-backfire premixing nozzle as claimed in claim 1, it is characterized in that, described turbine apparatus is unidirectional turbine apparatus, and described unidirectional turbine apparatus allows to spray into described burner hearth and prevent that the gas backstreaming in the described burner hearth from entering described combustion air pipeline from the fuel gas of described combustion air pipeline and the mixture of combustion air.
4. the heating furnace with turbine anti-backfire premixing nozzle as claimed in claim 1, it is characterized in that, described heating furnace with turbine anti-backfire premixing nozzle also comprises the air preheater that is arranged in the described flue, wherein, the combustion air in the described combustion air pipeline is the air that is preheated from described air preheater.
5. the heating furnace with turbine anti-backfire premixing nozzle as claimed in claim 1 is characterized in that, described several pores are divided at least two groups along the circumferential direction of described inflammable gas pipeline, and every group of pore comprises at least four pores.
6. the heating furnace with turbine anti-backfire premixing nozzle as claimed in claim 5, it is characterized in that, described several pores uniformly-spaced are divided at least three groups along the circumferential direction of described inflammable gas pipeline, and every group of pore comprises at least five pores that uniformly-spaced arrange along the longitudinal direction of described inflammable gas pipeline.
7. such as each described heating furnace with turbine anti-backfire premixing nozzle in the claim 1～6, it is characterized in that described turbine apparatus is arranged on an end of the described burner hearth of vicinity of described turbine anti-backfire premixing nozzle.
8. the heating furnace with turbine anti-backfire premixing nozzle as claimed in claim 7 is characterized in that, described several pores on the wall of described inflammable gas pipeline are positioned at the side away from described burner hearth of described turbine apparatus.
9. such as each described heating furnace with turbine anti-backfire premixing nozzle in the claim 1～6, it is characterized in that described fuel gas is coal gas, described heating furnace is ceramic kiln.
10. such as each described heating furnace with turbine anti-backfire premixing nozzle in the claim 1～6, it is characterized in that described fuel gas is natural gas, described heating furnace is the stainless steel annealing stove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102466755A CN103353113A (en) | 2012-07-17 | 2012-07-17 | Heating furnace with turbine tempering-proof premix nozzles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102466755A CN103353113A (en) | 2012-07-17 | 2012-07-17 | Heating furnace with turbine tempering-proof premix nozzles |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614529A (en) * | 2013-10-23 | 2014-03-05 | 佛山市广旭节能自动化科技有限公司 | Fuel pre-mixing type multi-spray-gun aluminium homogenizing furnace |
| CN105485682A (en) * | 2016-01-25 | 2016-04-13 | 大庆市斯麦森科技有限公司 | Low-NOx burner adopting air premixing |
| CN105864814A (en) * | 2016-05-25 | 2016-08-17 | 王科伟 | High-efficiency spiral-flow overlapping type combustion furnace |
| CN105864813A (en) * | 2016-05-25 | 2016-08-17 | 王科伟 | Spiral-flow overlapping type combustion furnace |
| CN110440593A (en) * | 2019-08-13 | 2019-11-12 | 蚌埠市昆宇机械加工厂 | A kind of glass processing heating device |
-
2012
- 2012-07-17 CN CN2012102466755A patent/CN103353113A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614529A (en) * | 2013-10-23 | 2014-03-05 | 佛山市广旭节能自动化科技有限公司 | Fuel pre-mixing type multi-spray-gun aluminium homogenizing furnace |
| CN103614529B (en) * | 2013-10-23 | 2017-07-07 | 广东工业大学 | The premixed many spray gun aluminium homogeneous furnaces of fuel |
| CN105485682A (en) * | 2016-01-25 | 2016-04-13 | 大庆市斯麦森科技有限公司 | Low-NOx burner adopting air premixing |
| CN105864814A (en) * | 2016-05-25 | 2016-08-17 | 王科伟 | High-efficiency spiral-flow overlapping type combustion furnace |
| CN105864813A (en) * | 2016-05-25 | 2016-08-17 | 王科伟 | Spiral-flow overlapping type combustion furnace |
| CN105864814B (en) * | 2016-05-25 | 2019-04-19 | 王科伟 | High-efficiency cyclone superposing type combustion furnace |
| CN110440593A (en) * | 2019-08-13 | 2019-11-12 | 蚌埠市昆宇机械加工厂 | A kind of glass processing heating device |
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Address after: 528131 Guangdong province Foshan Sanshui Baini Town Industrial Road No. 93 four floor Applicant after: Foshan Guangxu Energy-Saving Automation Technology Co., Ltd. Applicant after: Foshan Guangshun Electrical Equipment Co., Ltd. Applicant after: Guangdong Guangshun New Energy Power Technology Co., Ltd. Address before: 528000, two, south side of Building 1, No. four, Huabao South Road, Chancheng District, Guangdong, Foshan Applicant before: Foshan Guangxu Energy-Saving Automation Technology Co., Ltd. Applicant before: Foshan Guangshun Electrical Equipment Co., Ltd. Applicant before: Guangdong Guangshun New Energy Power Technology Co., Ltd. |
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Application publication date: 20131016 |