CN102679360A - Multi-fuel combustor - Google Patents
Multi-fuel combustor Download PDFInfo
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- CN102679360A CN102679360A CN2012101961882A CN201210196188A CN102679360A CN 102679360 A CN102679360 A CN 102679360A CN 2012101961882 A CN2012101961882 A CN 2012101961882A CN 201210196188 A CN201210196188 A CN 201210196188A CN 102679360 A CN102679360 A CN 102679360A
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- fuel nozzle
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- burner
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Abstract
The invention relates to a multi-fuel combustor, which comprises an outer fuel nozzle, a middle fuel nozzle and an inner fuel nozzle. The outer fuel nozzle, the middle fuel nozzle and the inner fuel nozzle are coaxially arranged and are respectively provided with fuel inlets. The combustor is also provided with an inner air nozzle, a middle air nozzle and an outer air nozzle. The inner air nozzle is positioned between the inner fuel nozzle and the middle fuel nozzle, the middle air nozzle is positioned between the middle fuel nozzle and the outer fuel nozzle, and the outer air nozzle is positioned between the outer fuel nozzle and the outer wall of the combustor. The inner fuel nozzle, the middle fuel nozzle and the outer fuel nozzle are arranged coaxially, so that two or three types of fuels can be combusted in the combustor, gas fuel can be combusted in the combustor, furthermore, gas fuel and liquid fuel can be simultaneously combusted in the combustor, and operation flexibility is good. The fuel nozzles are provided with the independent air nozzles, so that air is independently supplied for the fuel nozzles, and combustion strength is increased. By adoption of the fuel nozzles, full combustion is completed, the combustion efficiency is improved, pollution to the atmosphere is reduced, and environmental protection is facilitated.
Description
Technical field
The invention belongs to the combustion apparatus technical field, relate to a kind of burner, be specifically related to a kind of many fuel burners that use two or three fuel.
Technical background
The public combustion air of the liquid fuel nozzle of the oil of prior art, gas dual burner and gas fuel nozzle; Air feed gap between gas, the liquid burner is very little or very close to each other; The root wind of the fuel nozzle of internal layer is under-supply; Cause combustion lag, nozzles root coking carbon distribution, the phenomenon of flame elongation and incomplete combustion.Imperfect combustion make burner efficiency of combustion descend, waste energy, and contaminated air, be unfavorable for environmental protection.Can supply the fuel in two or three source place in the actual production simultaneously, the fuel of the different calorific values of variety classes in other words, the kind of fuel is different, and the burning ignition point is different with burning velocity, and mixed fuel combustion efficiency is poor, very easily takes off fire and tempering.
Granted publication number " is used to solve the defective that existing single type burner heat supply is unstable, efficiency of combustion is low for the middle utility model patent of CN2662078Y discloses a kind of " the compound burner of gas-solid double fuel ".The burner body is arranged in the formation, and burner body front end has spout, is improved to, and is provided with solid fuel, gaseous fuel and combustion air passage in the said burner body, and the outlet of three passages compiles at the spout place of burner front end.Adopt the heating furnace of the utility model to have not receive the characteristic of factor affecting such as air feed fluctuation and solid combustion efficient are low; Furnace temperature is stable and can keep continuity; Fuel combustion is abundant, and efficiency of combustion is high, installs and uses on the heating furnace in productions such as lime, alloy baking, steel rolling of suiting.”。But this patent can not solve the problem that above-mentioned gas, liquid fuel and two or three gaseous fuel mixed combustion exist.
Summary of the invention
For overcoming the deficiency of prior art, the present invention provides one kind of multiple fuel burners, and every kind of fuel nozzle is provided with independently air feed system, improves the efficiency of combustion and the operating flexibility of burner.
Multifuel firing device of the present invention,------, middle fuel nozzle and internal layer fuel nozzle are formed and coaxial setting, and each grate firing material nozzle is respectively equipped with fuel inlet by outer fuel nozzle.Fuel burner also is provided with inner air nozzle, intermediate air nozzle and outer air nozzle.The inner air nozzle is between internal layer fuel nozzle and middle fuel nozzle, and the intermediate air nozzle is between middle fuel nozzle and outer fuel nozzle, and the outer air nozzle is between outer fuel nozzle and burner outer wall.The inner air inlet passes outer fuel nozzle, intermediate air nozzle and middle fuel nozzle and is connected with the inner air nozzle; The intermediate air inlet passes outer fuel nozzle and is connected with the intermediate air nozzle, and outer air inlet burner outer wall is connected with the outer air nozzle.
The internal layer fuel nozzle is liquid fuel nozzle or gas fuel nozzle, and middle fuel nozzle is liquid fuel nozzle or gas fuel nozzle, and outer fuel nozzle is a gas fuel nozzle.The material of burner is carbon steel or stainless steel.Between burner outer wall and the outer fuel nozzle, between outer burner noz(zle) and the middle level fuel nozzle and be provided with supporting between middle fuel nozzle and the internal layer fuel nozzle.Inner air inlet, intermediate air inlet and outer air inlet are provided with the air quantity governor motion.
Multifuel firing device of the present invention is provided with three layers of nozzle system, and every layer of nozzle is provided with independently air nozzle, can isolated operation one deck nozzle, also can move two layers or three layers of nozzle simultaneously.Liquid fuel combustion be can use separately, two kinds of liquid fuels and a kind of gaseous fuel also can be used, or two kinds of gas fuel combustions of a kind of liquid fuel, or three kinds of gas fuel combustions, concrete operations are confirmed according to on-the-spot fuel supply situation.The inner air nozzle is that liquid fuel calculates definite circulation of air sectional area by the fuel nozzle, and the intermediate air nozzle is that liquid fuel calculates definite circulation of air sectional area by middle fuel nozzle, regulates air quantity according to different fuel through flow control device.The outer air nozzle is that gaseous fuel calculates definite circulation of air sectional area by outer fuel nozzle, regulates air quantity according to the calorific value situation of different fuel through flow control device.
Multifuel firing device of the present invention is through coaxial internal layer, centre and outer fuel nozzle and the air nozzle of being provided with; Realize that burner uses two or three fuel combustion simultaneously; But both also using gases and liquid fuel combustion combustions simultaneously of using gases fuel combustion, operating flexibility is good.Every grate firing material nozzle is furnished with independently air nozzle, and each layer nozzle independence air feed has improved the combustion intensity of each layer burner, but all completing combustion of each layer burner.Use the present invention can effectively avoid imperfect combustion phenomenons such as over-emitting black exhaust, coking carbon distribution, flame elongation to take place, improve the efficiency of combustion of burner, reduce pollution, help environmental protection atmosphere.
Description of drawings
Fig. 1 is the structural representation of multifuel firing device of the present invention;
Fig. 2 is that the A of Fig. 1 is to figure;
Fig. 3 is the A-A figure of Fig. 1;
Fig. 4 is the B-B figure of Fig. 1.
Wherein:
1-------outer fuel nozzle, 2-middle fuel nozzle, 3-internal layer fuel nozzle, 4-internal layer fuel inlet, 5-middle fuel inlet, 6-outer fuel inlet, 7-inner air inlet, 8-intermediate air inlet, 9-outer air inlet, 10-supporting, 11-baffle plate, 12-inner air nozzle, 13-intermediate air nozzle, 14-outer air nozzle, 15-burner outer wall.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is elaborated.
Embodiment 1
Multifuel firing device of the present invention is as shown in Figure 1, is made up of outer fuel nozzle 1------, middle fuel nozzle 2, internal layer fuel nozzle 3, inner air nozzle 12, intermediate air nozzle 13 and outer air nozzle 14.---outer fuel nozzle is connected with outer fuel inlet 6, and middle fuel nozzle is connected with middle fuel inlet 5, and the internal layer fuel nozzle is connected with internal layer fuel inlet 4.As shown in Figure 2, outer fuel nozzle------, outer air nozzle, middle fuel nozzle, intermediate air nozzle, inner air nozzle, internal layer fuel nozzle coaxial arrangement.Between burner outer wall 15 and the outer fuel nozzle 1, between outer burner noz(zle) and the middle level fuel nozzle 2 and be provided with supporting 10 between middle fuel nozzle and the internal layer fuel nozzle 3, be used for fixing the position between each grate firing material nozzle.The inner air nozzle is between internal layer fuel nozzle and middle fuel nozzle, and the intermediate air nozzle is between middle fuel nozzle and outer fuel nozzle, and the outer air nozzle is between outer fuel nozzle and burner outer wall.As shown in Figure 3, inner air inlet 7 passes outer fuel nozzle 1, intermediate air nozzle 5 is connected with inner air nozzle 12 with middle fuel nozzle 2.As shown in Figure 4, intermediate air inlet 8 passes outer fuel nozzle 1 and is connected with intermediate air nozzle 5.Outer air inlet 9 passes burner outer wall 15 and is connected with outer air nozzle 14.Inner air inlet, intermediate air inlet and outer air inlet are provided with the air quantity governor motion, are used for regulating intake after the fuel conversion.The material of burner is carbon steel or stainless steel.Present embodiment internal layer fuel nozzle 3 is a liquid fuel nozzle, and middle fuel nozzle 2 is a gas fuel nozzle with outer fuel nozzle 1.
The running of multifuel firing device of the present invention does, liquid diesel fuel gets into internal layer fuel nozzles 3 through internal layer fuel inlet 4, and gaseous fuel methane is fuel nozzles 2 in the middle of middle fuel inlet 5 gets into, and gaseous fuel water-gas (mainly contains CO and H
2, calorific value is 10380kj/m
3) get into outer fuel nozzle 1 through outer fuel inlet 6.Regulate the air quantity governor motion of inner air inlet, intermediate air inlet and outer air inlet, make it the air quantity of using that aperture adapts to corresponding each fuel nozzle.
Another embodiment of the present invention does, internal layer fuel nozzle 3, middle fuel nozzle 2 and outer fuel nozzle are the gaseous fuel burner, and other structure is identical with embodiment 1.Gaseous fuel CNG gets into internal layer fuel nozzle 3 through internal layer fuel inlet 4, and the sleeve in oil field associated gas is fuel nozzle 2 in the middle of middle fuel inlet 5 gets into, and coke-stove gas gets into outer fuel nozzle 1 through outer fuel inlet 6.Regulate the air quantity governor motion of inner air inlet, intermediate air inlet and outer air inlet, make it the air quantity of using that aperture adapts to corresponding each fuel nozzle.
An embodiment more of the present invention does, the internal layer fuel nozzle is the liquid fuel burner, and outer fuel nozzle is the gaseous fuel burner.Liquid fuel gas oil gets into internal layer fuel nozzles 3 through internal layer fuel inlet 4, and the gaseous fuel liquefied petroleum gas gets into outer fuel nozzle 1 through outer fuel inlet 6, and middle fuel nozzle 2 is on the shelf.Close the air door of intermediate air inlet, regulate the air quantity governor motion of inner air inlet and outer air inlet, make it the air quantity of using that aperture adapts to corresponding each fuel nozzle.
Claims (5)
1. one kind of multiple fuel burners;------, middle fuel nozzle (2) and internal layer fuel nozzle (3) are formed and coaxial setting by outer fuel nozzle (1); Each grate firing material nozzle is respectively equipped with fuel inlet, it is characterized in that: said burner also is provided with inner air nozzle (12), intermediate air nozzle (13) and outer air nozzle (14); Said inner air nozzle is between internal layer fuel nozzle and middle fuel nozzle, and said intermediate air nozzle is between middle fuel nozzle and outer fuel nozzle, and said outer air nozzle is positioned between outer fuel nozzle and the burner outer wall (15); Inner air inlet (7) passes outer fuel nozzle, intermediate air nozzle and middle fuel nozzle and is connected with the inner air nozzle; Intermediate air inlet (8) passes outer fuel nozzle and is connected with the intermediate air nozzle, and outer air inlet (9) is connected with outer air nozzle (14).
2. multifuel firing device according to claim 1; It is characterized in that: said internal layer fuel nozzle (3) is liquid fuel nozzle or gas fuel nozzle; Fuel nozzle (2) is liquid fuel nozzle or gas fuel nozzle in the middle of said, and said outer fuel nozzle (1) is a gas fuel nozzle.
3. multifuel firing device according to claim 1 is characterized in that: the material of said institute burner is carbon steel or stainless steel.
4. multifuel firing device according to claim 1 is characterized in that: between said burner outer wall (15) and the outer fuel nozzle (1), between outer burner noz(zle) and the middle level fuel nozzle (2) and be provided with supporting (10) between middle fuel nozzle and the internal layer fuel nozzle (3).
5. multifuel firing device according to claim 1 is characterized in that: said inner air inlet (7), intermediate air inlet (8) and outer air inlet (9) are provided with the air quantity governor motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101961882A CN102679360A (en) | 2012-06-14 | 2012-06-14 | Multi-fuel combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101961882A CN102679360A (en) | 2012-06-14 | 2012-06-14 | Multi-fuel combustor |
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| Publication Number | Publication Date |
|---|---|
| CN102679360A true CN102679360A (en) | 2012-09-19 |
Family
ID=46811680
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101961882A Pending CN102679360A (en) | 2012-06-14 | 2012-06-14 | Multi-fuel combustor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443228A (en) * | 1982-06-29 | 1984-04-17 | Texaco Inc. | Partial oxidation burner |
| CN2641475Y (en) * | 2003-08-06 | 2004-09-15 | 北京金瑞华科技有限公司 | Low heat value low pressure/high pressure fuel gas combination burner |
| CN1831430A (en) * | 2006-01-31 | 2006-09-13 | 金盛珠 | Burner for using mixed high, low pressure gas and fuel |
| CN201575462U (en) * | 2009-12-29 | 2010-09-08 | 襄樊大力机电技术有限公司 | Mixed pulverized coal and gas fuel burner for rotary kiln |
| CN202630069U (en) * | 2012-06-14 | 2012-12-26 | 中科为宇（北京）科技发展有限公司 | Multi-fuel combustor |
-
2012
- 2012-06-14 CN CN2012101961882A patent/CN102679360A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443228A (en) * | 1982-06-29 | 1984-04-17 | Texaco Inc. | Partial oxidation burner |
| CN2641475Y (en) * | 2003-08-06 | 2004-09-15 | 北京金瑞华科技有限公司 | Low heat value low pressure/high pressure fuel gas combination burner |
| CN1831430A (en) * | 2006-01-31 | 2006-09-13 | 金盛珠 | Burner for using mixed high, low pressure gas and fuel |
| CN201575462U (en) * | 2009-12-29 | 2010-09-08 | 襄樊大力机电技术有限公司 | Mixed pulverized coal and gas fuel burner for rotary kiln |
| CN202630069U (en) * | 2012-06-14 | 2012-12-26 | 中科为宇（北京）科技发展有限公司 | Multi-fuel combustor |
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Application publication date: 20120919 |