CN203068527U - Oil-gas dual-purpose combustor for rotary kiln - Google Patents
Oil-gas dual-purpose combustor for rotary kiln Download PDFInfo
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- CN203068527U CN203068527U CN 201220647394 CN201220647394U CN203068527U CN 203068527 U CN203068527 U CN 203068527U CN 201220647394 CN201220647394 CN 201220647394 CN 201220647394 U CN201220647394 U CN 201220647394U CN 203068527 U CN203068527 U CN 203068527U
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- rotary kiln
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Abstract
The utility model discloses an oil-gas dual-purpose combustor for a rotary kiln. The oil-gas dual-purpose combustor for the rotary kiln is characterized by comprising an atomization oil gun (1) arranged in the center of the oil-gas dual-purpose combustor for the rotary kiln, a low-load combustion unit sleeved on the periphery of the atomization oil gun (1), and a large-load combustion unit sleeved on the periphery of the low-load combustion unit, wherein the maximum turndown ratio of the oil-gas dual-purpose combustor for the rotary kiln is more than 1:10 by using common combustion operation of the atomization oil gun (1), the low-load combustion unit and the large-load combustion unit. The low-load combustion unit comprises a primary gas cavity pipe (3) sleeved on the periphery of the atomization oil gun (1), and a primary air cavity pipe (4) sleeved on the periphery of the primary gas cavity pipe (3). The large-load combustion unit comprises a secondary gas cavity pipe (5) sleeved on the periphery of the primary air cavity pipe (4), and a secondary air cavity pipe (6) sleeved on the periphery of the secondary gas cavity pipe (5). The oil-gas dual-purpose combustor for the rotary kiln is reasonable in structural design, efficient in combustion, energy-saving and environment-friendly.
Description
Technical field
The utility model relates to a kind of burner, relates in particular to a kind of industrial rotary kiln oil-gas two-way burner.
Background technology
Along with the enforcement of policies such as national energy-saving and emission-reduction, cause enterprise that combustion apparatus is had higher requirement.Want to reach environmental protection standard, must reduce the discharge capacity of NOx, must improve burner.
At present, the burner of domestic industry rotary kiln employing is usually based on general expression, triple channel and four-way burner.Enterprise is for reducing the NOx discharging of Industrial Stoves, and normally the transformation by burner realizes.
The multicenter combustor of realizing the NOx burning by the air classification technology arises at the historic moment, and becomes market mainstream combustion apparatus.The fuel ejection back of multicenter combustor and multichannel air capable mixed combustion successively, especially adopt center wind design can make the base portion of combustion flame form the circulation eddy current and produced negative pressuren zone, reached the generation of effective inhibition NOx, fume emission also reaches the energy-saving and cost-reducing environmental protection standard of country.
The adjusting of burner is than the ratio of the minimum load that refers to burner and peak load.But the adjusting ratio of present domestic normal burner is for about 1:4, and the bigger adjusting ratio of kiln operation technological requirement, so the adjusting of conventional burners is than not satisfying the actual needs of producing well.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the problem that above-mentioned prior art exists, a kind of oil-gas two-way burner that can expand industrial rotary kiln energy-conserving and environment-protective technology better to be provided.The multichannel stepped mixing combustion technology that the utility model utilizes fuel staging and air classification to combine, and in conjunction with torch oil gun atomization technique realization oil-gas two-way.The little load fuel element of the utility model design can be avoided waste of fuel, compares energy-conservation more than 10% with conventional burners; And the reasonable burning by little load fuel element and big load fuel element distributes, and can realize bigger adjusting than burning, and when improving efficiency of combustion, NOx discharges reduction, and effects of energy conservation and environmental protection is obvious.
In addition, the utility model designs the atomized oil gun of mist of oil spray angle according to actual needs, not only can well solve the problem of spray nozzle clogging, reduces the atomizing medium consumption, and oil is mixed fully with atomizing medium, and burning realizes purpose of energy saving fully.
In order to realize above-mentioned purpose of the present utility model, provide following technical scheme:
A kind of rotary kiln oil-gas two-way burner comprises: the atomized oil gun that is arranged on the burner center; Be set in described atomized oil gun little load fuel element on every side; And be set in big load fuel element around the described little load fuel element; Wherein, utilize the common burning operation of described atomized oil gun, little load fuel element and the fuel element of loading greatly, make the maximal regulated of burner than surpassing 1:10.
Preferably, the head of described atomized oil gun is provided with nozzle, and the periphery of described nozzle arranges a plurality of spouts, and the angle of spout and nozzle centre axis is 15 ° ~ 29 °, or 31 ° ~ 59 °, or 61 ° ~ 90 °.
Preferably, described little load fuel element comprises: a combustion gas lumen that is set in described atomized oil gun periphery; And the primary air lumen that is set in a combustion gas lumen periphery.
Preferably, described big load fuel element comprises: the secondary combustion gas lumen that is set in described primary air lumen periphery; And the auxiliary air lumen that is set in secondary combustion gas lumen periphery.
Preferably, when combustion gas lumen and primary air lumen were sent into combustion gas and air, the operation of burning jointly of described little load fuel element and described atomized oil gun was regulated than being 1:4 it.
Preferably, when secondary combustion gas lumen and auxiliary air lumen were sent into combustion gas and air, the operation of burning jointly of described big load fuel element, little load fuel element and described atomized oil gun was regulated than surpassing 1:10 it.
Preferably, a described combustion gas lumen head is connected with gas spray head one time, and a described gas spray head is circumferential weld or loose structure; Described secondary combustion gas lumen head is connected with the secondary gas spray head, and described secondary gas spray head is circumferential weld or loose structure.
Preferably, described primary air lumen head is equipped with cyclone; Described auxiliary air lumen head is connected with the auxiliary air spout, and described auxiliary air spout is the circumferential weld structure.
Preferably, be provided with oil gun stay pipe assembly between described atomized oil gun and a combustion gas lumen.
Preferably, the head of a described combustion gas lumen, primary air lumen, secondary combustion gas lumen and auxiliary air lumen is selected low cement deposit material or mullite pouring material for use.
The beneficial effects of the utility model embody in the following areas:
Burner of the present utility model not only possesses the practical effect of normal burner, and can realize bigger adjusting than burning, regulates than surpassing 1:10; The utility model has adopted fuel staging and two kinds of combustion technologies of air classification, and the discharging of NOx significantly reduces; The utility model can be realized the function of oil-gas two-way; Atomized oil gun of the present utility model not only can well solve the problem of spray nozzle clogging, can also realize burning fully, purpose of energy saving; The utlity model has little load fuel element, can avoid waste of fuel, compare energy-conservation more than 10% with conventional burners; The utility model distributes by the reasonable burning of each fuel element, and when improving efficiency of combustion, effects of energy conservation and environmental protection is obvious.
Description of drawings
Fig. 1 is a kind of rotary kiln of the utility model oil-gas two-way burner structure schematic diagram;
Fig. 2 is burner head structure cutaway view shown in Figure 1;
Fig. 3 is the nozzle plane cutaway view of atomized oil gun shown in Figure 1.
Description of reference numerals: 1-atomized oil gun; The 11-nozzle; The 11a-spout; 2-oil gun stay pipe assembly; Combustion gas lumen of 3-; Gas spray head of 31-; Wind lumen of 4-; The 41-cyclone; 5-secondary combustion gas lumen; 6-secondary wind lumen.
The specific embodiment
As shown in Figure 1, a kind of rotary kiln of the utility model oil-gas two-way burner comprises: the atomized oil gun 1 that is arranged on the burner center; Be set in atomized oil gun 1 little load fuel element on every side; And be set in big load fuel element around the little load fuel element; Wherein, utilize the common burning operation of atomized oil gun 1, little load fuel element and the fuel element of loading greatly, can make the maximal regulated ratio of the utility model burner surpass 1:10, and be no more than 1:16.
As shown in Figure 1, 2, little load fuel element comprises: a combustion gas lumen 3 that is set in atomized oil gun 1 periphery; And the primary air lumen 4 that is set in combustion gas lumen 3 peripheries.Big load fuel element comprises: the secondary combustion gas lumen 5 that is set in primary air lumen 4 peripheries; And the auxiliary air lumen 6 that is set in secondary combustion gas lumen 5 peripheries.
Particularly, as shown in Figure 1, atomized oil gun 1 is arranged on the center of burner, and the oil gun body connects in-line and atomizing medium pipeline respectively, and its head is provided with atomising device, can produce good atomizing effect.The head of atomized oil gun 1 is provided with nozzle 11, and as shown in Figure 3, the periphery of nozzle 11 arranges a plurality of spout 11a, and the aperture of spout 11a is bigger, prevents from stopping up.The angular range of spout 11a and nozzle 11 central axis can design according to actual needs at 15 ° ~ 90 °, preferably at 15 ° ~ 29 °, or 31 ° ~ 59 °, or in 61 ° ~ 90 ° scopes, guarantees sufficient combustion.
As shown in Figure 2, a combustion gas lumen 3 is set in the periphery of atomized oil gun 1, and its head is connected with gas spray head 31 one time, and this gas spray head 31 can be selected circumferential weld or loose structure for use according to the difference of required combustion gas.
As shown in Figure 2, primary air lumen 4 is set in the periphery of a combustion gas lumen 3, its head is equipped with cyclone 41, and this cyclone 41 makes the primary air that enters in the primary air lumen 4 form eddy flow wind in exit generation rotation, sprays and reach the purpose of steady flame to rotation all around.The direction of rotation of cyclone 41 is consistent with turning to of rotary kiln, can change angle and the wind speed of cyclone 41 according to needs of production, thereby changes flame profile and length.The exit passageway of primary air lumen 4 is longer than atomized oil gun nozzle 11 and cyclone 41, makes fuel oil, combustion gas and air carry out the premixed combustion ejection at this, and flame stabilization.
As shown in Figure 2, secondary combustion gas lumen 5 is set in the periphery of primary air lumen 4, and its head is connected with the secondary gas spray head, and this secondary gas spray head can be selected circumferential weld or loose structure for use according to the difference of required combustion gas.
As shown in Figure 2, auxiliary air lumen 6 is set in the periphery of secondary combustion gas lumen 5, and its head is connected with the auxiliary air spout, and this auxiliary air spout is the circumferential weld structure.The auxiliary air that enters auxiliary air lumen 6 directly sprays by the circumferential weld at auxiliary air spout place, forms direct current wind, and with the secondary combustion gas, and the flue gas of primary air and a combustion gas mixing burning carries out secondary at far-end and crosses, mixes, burns.Can change the outlet wind speed according to the outlet that needs of production changes auxiliary air lumen 6, thereby change flame profile.
As shown in Figure 1, be provided with oil gun stay pipe assembly 2 between atomized oil gun 1 and a combustion gas lumen 3, this oil gun stay pipe assembly 2 is set in the periphery of atomized oil gun 1, and oil gun is played support, effect such as fixing.
Each gun barrel head is higher because of flame temperature, passes through to select the material of heat-resistant antifriction when design, to satisfy the service life of burner.The head of a combustion gas lumen 3 of the present utility model, primary air lumen 4, secondary combustion gas lumen 5 and auxiliary air lumen 6 is selected low cement deposit material or mullite pouring material for use, prolongs the service life of burner.
Concrete operations step of the present utility model is as follows:
Oil-gas two-way burner of the present utility model has little load combustion function, and little load fuel element is formed in primary air and a combustion gas; Also have simultaneously big load combustion function, big load fuel element is formed in auxiliary air and secondary combustion gas.
When production is limited to light running, a combustion gas and primary air are sent into combustion gas lumen 3 and primary air lumen 4 respectively, the operation of burning jointly of the little load fuel element of being made up of combustion gas lumen 3 and primary air lumen 4 and atomized oil gun 1, the adjusting of burner is than being 1:4.Because burner is avoided waste of fuel according to the little load fuel element of having produced the needs appropriate design, energy conservation and consumption reduction effects is remarkable, compares energy-conservation more than 10% with conventional burners.
When production reaches the design load running, secondary combustion gas lumen 5 and auxiliary air lumen 6 are sent in secondary combustion gas and auxiliary air respectively, a combustion gas and primary air are sent into combustion gas lumen 3 and primary air lumen 4 respectively, the big load fuel element of being formed by secondary combustion gas lumen 5 and auxiliary air lumen 6, the operation of burning jointly of the little load fuel element that combustion gas lumen 3 and primary air lumen 4 are formed and atomized oil gun 1, make the adjusting of burner than surpassing 1:10, efficiency of combustion improves greatly.
Burner of the present utility model is owing to adopted fuel staging and two kinds of combustion technologies of air classification, and the discharging of NOx significantly reduces, and can realize the function of oil-gas two-way.
Although above-mentioned the utility model is described in detail; but the utility model is not limited thereto; those skilled in the art can make amendment according to principle of the present utility model; therefore, all various modifications of carrying out according to principle of the present utility model all should be understood to fall into protection domain of the present utility model.
Claims (8)
1. a rotary kiln oil-gas two-way burner is characterized in that, comprising:
Be arranged on the atomized oil gun (1) at burner center;
Be set in described atomized oil gun (1) little load fuel element on every side; And
Be set in described little load fuel element big load fuel element on every side;
Wherein, utilize the common burning operation of described atomized oil gun (1), little load fuel element and the fuel element of loading greatly, make the maximal regulated of burner than surpassing 1:10.
2. rotary kiln as claimed in claim 1 oil-gas two-way burner, it is characterized in that, the head of described atomized oil gun (1) is provided with nozzle (11), the periphery of described nozzle (11) arranges a plurality of spouts (11a), spout (11a) is 15 °～29 ° with the angle of nozzle (11) central axis, or 31 °～59 °, or 61 °～90 °.
3. rotary kiln as claimed in claim 1 oil-gas two-way burner is characterized in that, described little load fuel element comprises:
Be set in the peripheral combustion gas lumen (3) of described atomized oil gun (1); And
Be set in the peripheral primary air lumen (4) of a combustion gas lumen (3).
4. rotary kiln as claimed in claim 3 oil-gas two-way burner is characterized in that, the fuel element of loading greatly comprises:
Be set in the peripheral secondary combustion gas lumen (5) of described primary air lumen (4); And
Be set in the peripheral auxiliary air lumen (6) of secondary combustion gas lumen (5).
5. rotary kiln as claimed in claim 4 oil-gas two-way burner is characterized in that, a described combustion gas lumen (3) head is connected with a gas spray head (31), and a described gas spray head (31) is circumferential weld or loose structure; Described secondary combustion gas lumen (5) head is connected with the secondary gas spray head, and described secondary gas spray head is circumferential weld or loose structure.
6. rotary kiln as claimed in claim 4 oil-gas two-way burner is characterized in that, described primary air lumen (4) head is equipped with cyclone (41); Described auxiliary air lumen (6) head is connected with the auxiliary air spout, and described auxiliary air spout is the circumferential weld structure.
7. rotary kiln as claimed in claim 3 oil-gas two-way burner is characterized in that, is provided with oil gun stay pipe assembly (2) between described atomized oil gun (1) and the combustion gas lumen (3).
8. rotary kiln as claimed in claim 4 oil-gas two-way burner, it is characterized in that the head of a described combustion gas lumen (3), primary air lumen (4), secondary combustion gas lumen (5) and auxiliary air lumen (6) is selected low cement deposit material or mullite pouring material for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647394 CN203068527U (en) | 2012-11-29 | 2012-11-29 | Oil-gas dual-purpose combustor for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647394 CN203068527U (en) | 2012-11-29 | 2012-11-29 | Oil-gas dual-purpose combustor for rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN203068527U true CN203068527U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220647394 Expired - Fee Related CN203068527U (en) | 2012-11-29 | 2012-11-29 | Oil-gas dual-purpose combustor for rotary kiln |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642053A (en) * | 2016-11-29 | 2017-05-10 | 武汉都市环保工程技术股份有限公司 | System of adopting coal gas with low heating value to conduct electricity generation |
| CN106838863A (en) * | 2016-11-29 | 2017-06-13 | 武汉都市环保工程技术股份有限公司 | The method generated electricity using low-heat value gas |
-
2012
- 2012-11-29 CN CN 201220647394 patent/CN203068527U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642053A (en) * | 2016-11-29 | 2017-05-10 | 武汉都市环保工程技术股份有限公司 | System of adopting coal gas with low heating value to conduct electricity generation |
| CN106838863A (en) * | 2016-11-29 | 2017-06-13 | 武汉都市环保工程技术股份有限公司 | The method generated electricity using low-heat value gas |
| CN106642053B (en) * | 2016-11-29 | 2020-02-14 | 中冶南方都市环保工程技术股份有限公司 | System for generating electricity by adopting low-calorific-value gas |
| CN106838863B (en) * | 2016-11-29 | 2020-05-08 | 中冶南方都市环保工程技术股份有限公司 | Method for generating electricity by adopting low-calorific-value gas |
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| 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: 20130717 Termination date: 20201129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |