CN204534592U - A kind of pellet oxygen-enriched air roasting burner - Google Patents
A kind of pellet oxygen-enriched air roasting burner Download PDFInfo
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- CN204534592U CN204534592U CN201520153151.0U CN201520153151U CN204534592U CN 204534592 U CN204534592 U CN 204534592U CN 201520153151 U CN201520153151 U CN 201520153151U CN 204534592 U CN204534592 U CN 204534592U
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- burner
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- fuel inlet
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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
Abstract
A kind of pellet oxygen-enriched air roasting burner, belongs to grate-kiln pelletizing production technical field.Comprise nozzle, combustion air entrance, oxygen enrichment wind entrance, fuel inlet, FlexbleJoint, pressure-measuring device, control valve, ignition channel; Nozzle (1) is in burner body termination, and combustion air entrance (2) is divided into two passages, two passages is equipped with respectively control valve (7), one of them passage is equipped with FlexbleJoint (5); Burner body there are two FlexbleJoints (5); Burner body two FlexbleJoints (5) are equipped with pressure-measuring device (6); Burner tail end is followed successively by oxygen enrichment wind entrance (3), fuel inlet (4), ignition channel (8).Advantage is, improves fuel economy, reduces Fuel Consumption, reduces CO
2discharge capacity, and then reduce ring formation of rotary kiln, raising pellet seed output and quality.
Description
Technical field
The utility model belongs to pellet-roasting technical field, in particular, provides a kind of pellet oxygen-enriched air roasting burner, makes the full combustion of fuel that burner sprays into, under the prerequisite ensureing sintering temperature, effectively reduce fuel straying quatity.
Background technology
In chain grate machine-rotary kiln pelletizing industry, pellet-roasting finally completes in rotary kiln.Flame temperature plays key effect for pellet-roasting quality, controls flame temperature, and in maintenance kiln, operating temperature is stable very important.Oxidizing atmosphere in rotary kiln is the key factor guaranteed complete combustion of fuel, pellet complete oxidation and control the generation of low melting point ring formation thing.Ensure rationally carrying out of these thermal processions, then can improve the seed output and quality of pellet, enhance productivity.The structure &processes flow process of rotary kiln as shown in Figure 3.
Therefore, improve fuel economy, reduce Fuel Consumption, low-carbon (LC) produces the important topic becoming pelletizing production development.In process of production, realize mainly through following measures:
1. optimize iron ore raw material structure, use the high-quality iron ore based on magnetic iron ore as far as possible, few with even not using bloodstone.
2. select the balling disk (-sc) that diameter is large, improve the endurance of green-ball; Strengthen the sieving capacity of green-ball, ensure green-ball epigranular, optimal granularity scope 10 ~ 12mm.
3. reduce into kiln powder, the work of study emphasis the following aspects: 1. reduce pelletizing moisture to improve cracking temperature of green pel let, improve bed permeability; 2. the dry I of chain grate machine exhausting, the hot blast temperature of II section and wind speed is suitably reduced; 3., when green-ball moisture is too high, suitably thickness of feed layer is reduced.
4. the fuel that sprays into of rotary kiln, as coal, adopts that coal calorific value is high, fugitive constituent is few, the low-melting fat coal of fugitive constituent as far as possible.
5. stablize high-temperature region in rotary kiln, improve pressure-reduction level in kiln as far as possible.
6. specification startup-shutdown operating duty, strict start thermal technology adjustment.
Above-mentioned measure inherently could not reduce fuel consumption, reduce CO
2discharge.According to combustion reaction principle, improve the oxidizing atmosphere of rotary kiln, make full combustion of fuel, the more abundant temperature of burning is higher; Under the prerequisite of sintering temperature needed for pellet complete oxidation, effectively reduce fuel straying quatity.Fundamentally realize energy-saving and emission-reduction low-carbon (LC) to produce, reduce ring formation of rotary kiln simultaneously.Therefore, researching and developing Novel ball nodulizing oxygen-enriched air roasting burner is needing when business.
Summary of the invention
The purpose of this utility model is to provide a kind of pellet oxygen-enriched air roasting burner, can improve fuel economy, reduces Fuel Consumption, reduce CO
2discharge capacity, and then reduce ring formation of rotary kiln, raising pellet seed output and quality.
The utility model comprises nozzle 1, combustion air entrance 2, oxygen enrichment wind entrance 3, fuel inlet 4, FlexbleJoint 5, pressure-measuring device 6, control valve 7, ignition channel 8.
Nozzle 1, in burner body termination, burner body has two FlexbleJoints 5; Combustion air entrance 2 is divided into again two passages, respectively as Whirl deposite tank and axial flow wind, two passages is equipped with control valve 7 respectively, one of them passage is equipped with FlexbleJoint 5; Burner body two FlexbleJoints 5 are equipped with pressure-measuring device 6; Burner tail end is followed successively by oxygen enrichment wind entrance 3, fuel inlet 4, ignition channel 8.
Oxygen enrichment wind entrance 3 sprays into oxygen enrichment wind, makes burning more abundant, and plays current stabilization.
Fuel inlet 4 both can spray into coal dust, can spray into coal gas again, and the mixed spray of all right coal gas, coal dust, belongs to mixed type burner; Fuel inlet 4 is 15 ° with the angle of burner centerline.
Nozzle 1 is processed by special material, and the ejiction opening area of each passage is adjustable, thus regulates the wind speed of ejection; FlexbleJoint 5 connects the critical piece of each pipeline, sealing and adjustment flame profile, allows coupled pipeline to axially move; Pressure-measuring device 6 shows air port spouting velocity in burner indirectly; Control valve 7, for regulating air quantity, burner is equipped with three control valves, is respectively used to regulate oxygen enrichment wind, Whirl deposite tank and axial flow wind.
The utility model pellet oxygen-enriched air roasting burner is applicable to chain grate machine-rotary kiln pelletizing production.
1, efficiency of combustion is improved
Oxygen enrichment wind entrance 3 sprays into oxygen-enriched stream, improves the oxidizing atmosphere in rotary kiln, contributes to the full combustion of fuel that fuel inlet 4 sprays into.
2, fuel consumption is reduced
The fuel combustion that fuel inlet 4 sprays into is more abundant, and the temperature in rotary kiln is higher, under the prerequisite reaching pellet complete roasting oxidizing temperature, contributes to reducing fuel consumption.
3, low-carbon (LC), High-efficient Production
Fuel consumption reduces, CO
2discharge capacity reduces, and pellet realizes low-carbon (LC) and produces; Meanwhile, fuel consumption reduces, and reduces eutectic and enters kiln, reduce ring formation of rotary kiln, improve rotary kiln production efficiency, and then improve pellet seed output and quality.
Accompanying drawing explanation
Fig. 1 is the utility model pellet oxygen-enriched air roasting burner front view.Wherein, nozzle 1, fuel inlet 4, FlexbleJoint 5, pressure-measuring device 6, ignition channel 8.
Fig. 2 is the utility model pellet oxygen-enriched air roasting burner top view.Wherein, nozzle 1, combustion air entrance 2, oxygen enrichment wind entrance 3, fuel inlet 4, FlexbleJoint 5, pressure-measuring device 6, control valve 7, ignition channel 8.
Fig. 3 is the structure &processes flow chart of rotary kiln.
Detailed description of the invention
The utility model pellet oxygen-enriched air roasting burner comprises nozzle 1, combustion air entrance 2, oxygen enrichment wind entrance 3, fuel inlet 4, FlexbleJoint 5, pressure-measuring device 6, control valve 7, ignition channel 8, is Five-channel, mixed type burner.
Nozzle 1, in burner body termination, burner body has two FlexbleJoints 5; Combustion air entrance 2 is divided into again two passages, respectively as Whirl deposite tank and axial flow wind, two passages is equipped with control valve 7 respectively, one of them passage is equipped with FlexbleJoint 5; Burner body two FlexbleJoints 5 are equipped with pressure-measuring device 6; Burner tail end is followed successively by oxygen enrichment wind entrance 3, fuel inlet 4, ignition channel 8.
Coal gas outwards sprays from fuel inlet 4 by certain angle of flare eddy flow, the momentum quite high by the Whirl deposite tank transmission of outer neighbour and the moment of momentum, and at full speed spiral advances, and continues radial diffusion; The axial flow wind bundle sprayed at a high speed with combustion air entrance 2 meets.The insertion of axial flow wind bundle further enhancing mixing (Secondary Air comprising surrounding) of coal gas and combustion air, and the degree of divergence of adjustable combustion flame, length, the thickness of flame can be regulated on demand, reach the flame profile of needs.Coal dust sprays inside fuel inlet 4 passage, and the wind of its core is sprayed into by oxygen enrichment entrance 3, impels the fuel combustion of core, makes burning more abundant, and plays current stabilization.The coal gas that fuel inlet 4 sprays into and coal dust light burning under the effect of ignition channel 8.
Nozzle 1 is processed by special material, and the ejiction opening area of each passage is adjustable, thus regulates the wind speed of ejection, is ensure one of flame profile and the critical component in life-span.FlexbleJoint 5 connects the critical piece of each pipeline, sealing and adjustment flame profile, allows coupled pipeline to axially move.Pressure-measuring device 6 shows air port spouting velocity in burner indirectly.Control valve 7, for regulating air quantity, burner is equipped with three control valves, the Whirl deposite tank that the oxygen enrichment wind being respectively used to regulate oxygen enrichment entrance 3 to spray into, combustion air entrance 2 spray into and axial flow wind.
The utility model pellet oxygen-enriched air roasting burner, to raising fuel economy, reduces Fuel Consumption, minimizing CO
2discharge capacity, and then reduce ring formation of rotary kiln, improve pellet seed output and quality there is realistic meaning.
Claims (2)
1. a pellet oxygen-enriched air roasting burner, is characterized in that, comprises nozzle, combustion air entrance, oxygen enrichment wind entrance, fuel inlet, FlexbleJoint, pressure-measuring device, control valve, ignition channel; Nozzle (1) is in burner body termination, and combustion air entrance (2) is divided into two passages, two passages is equipped with respectively control valve (7), one of them passage is equipped with FlexbleJoint (5); Burner body there are two FlexbleJoints (5); Burner body two FlexbleJoints (5) are equipped with pressure-measuring device (6); Burner tail end is followed successively by oxygen enrichment wind entrance (3), fuel inlet (4), ignition channel (8).
2. pellet oxygen-enriched air roasting burner according to claim 1, is characterized in that, fuel inlet (4) is 15 ° with the angle of burner centerline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153151.0U CN204534592U (en) | 2015-03-17 | 2015-03-17 | A kind of pellet oxygen-enriched air roasting burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153151.0U CN204534592U (en) | 2015-03-17 | 2015-03-17 | A kind of pellet oxygen-enriched air roasting burner |
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| Publication Number | Publication Date |
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| CN204534592U true CN204534592U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520153151.0U Active CN204534592U (en) | 2015-03-17 | 2015-03-17 | A kind of pellet oxygen-enriched air roasting burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424954A (en) * | 2017-09-04 | 2019-03-05 | 上海钜荷热力技术有限公司 | A kind of surface combustion burner of head collapsible |
-
2015
- 2015-03-17 CN CN201520153151.0U patent/CN204534592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424954A (en) * | 2017-09-04 | 2019-03-05 | 上海钜荷热力技术有限公司 | A kind of surface combustion burner of head collapsible |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |