CN202066336U - Oxygen-enriched combustion-supporting burner for rotary kiln - Google Patents
Oxygen-enriched combustion-supporting burner for rotary kiln Download PDFInfo
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- CN202066336U CN202066336U CN2011201550867U CN201120155086U CN202066336U CN 202066336 U CN202066336 U CN 202066336U CN 2011201550867 U CN2011201550867 U CN 2011201550867U CN 201120155086 U CN201120155086 U CN 201120155086U CN 202066336 U CN202066336 U CN 202066336U
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- rotary kiln
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- eddy flow
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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
The utility model discloses an oxygen-enriched combustion-supporting burner for a rotary kiln. Gas is conveyed to the rotary kiln through a primary gas pipe of the burner; combustion-supporting air is conveyed to the rotary kiln through a primary air duct and a secondary air duct of the burner; pressure, heat and flow of the gas conveyed to the rotary kiln through a primary gas adjusting valve are adjusted by controlling the primary gas pipe; and pressure, oxygen-enriched content and flow of the combustion-supporting air conveyed to the rotary kiln through a primary air adjusting valve are adjusted by controlling the primary air duct. With the adoption of the technical scheme, under the condition that the gas heat and the oxygen-enriched concentration of the combustion-supporting air rise and fall, the multiple design conditions can be reached with no need to replace a burning nozzle; and particularly, the flame length within the wider range can be adjusted, so that the complete combustion of the low air-fuel ratio is realized, and finally the purposes of energy conservation and emission reduction can be achieved..
Description
Technical field
The utility model relates to technical field of smelting, relates in particular to a kind of oxygen-enriched combustion-supporting burner that is used for rotary kiln.
Background technology
It is international universally recognized, effective energy-conserving and emission-cutting technology measure that industrial furnace adopts oxygen-enriched combusting.But China's overwhelming majority rotary kiln all is to adopt normal air combustion-supporting at present, and its shortcoming is to fuel gases calorific value requirement height, consumes the high coke-stove gas of a large amount of values.This be because: if fuel gases calorific value is low, cause the combustion gas theoretical temperature combustion lower, can't guarantee the production demand, for improving the air-breathing theoretical temperature combustion, be forced to adopt the technology of air, coal gas or sky, gas double pre-heating, fuel gases calorific value also must guarantee at 7500-9200KJ/NM
3Between, it requires to contain the coke-stove gas of 30%～40% high heating value in air mixture.
Along with the technology that low-cost oxygen enrichment is produced is increasingly mature, the pressure of country's energy-saving and emission-reduction constantly increases, the cry that coke-stove gas is used for hydrogen metallurgy is more and more higher, carries out oxygen-enriched combusting by rotary kiln and directly utilizes low-calorie blast furnace gas and coal gas of converter extremely urgent.
Adopt air-breathing rotary kiln, if after implementing oxygen enrichment technology, the parameters such as flow of fuel gases calorific value, air-fuel ratio, combustion gas and combustion air, all with very big changing, especially the mixed gas that uses of smelter, its calorific value will change along with the mixed proportion of blast furnace gas, coal gas of converter and coke-stove gas or the variation of the own calorific value of its three and fluctuating, and increase the adjusting factor of oxygen-rich concentration again, the air-breathing burner (burner) that uses can't be suitable at all at present.
The utility model content
The purpose of this utility model is to propose a kind of oxygen-enriched combustion-supporting burner that is used for rotary kiln, under the condition of the oxygen-rich concentration of fuel gases calorific value and combustion air fluctuation, do not need to change burner, can both reach a plurality of design conditions, especially the length of flame can realize the more adjusting of wide region, realize the completing combustion of low air-fuel ratio, finally realize the purpose of energy-saving and emission-reduction.
For reaching this purpose, the utility model by the following technical solutions:
A kind of oxygen-enriched combustion-supporting burner that is used for rotary kiln comprises a gas pipe, a gas regulator, a gas port, an airduct, a wind control valve, wind snout, secondary air channel and a secondary wind inlet, wherein,
One end of a gas pipe is communicated with the rotary kiln body, and gas regulator is installed on gas pipe, and gas port is arranged on the end that gas pipe is communicated with the rotary kiln body;
One end of an airduct is communicated with the rotary kiln body, and wind control valve is installed on airduct, and wind snout is arranged on the end that airduct is communicated with the rotary kiln body;
One end of secondary air channel is communicated with the rotary kiln body, and secondary wind inlet is arranged on the end that secondary air channel is communicated with the rotary kiln body.
Also comprise secondary gas pipe, secondary gas regulator, coal gas spinning disk and secondary gas port, one end of secondary gas pipe is communicated with the rotary kiln body, the secondary gas regulator is installed on the secondary gas pipe, the secondary gas port is arranged on the end that the secondary gas pipe is communicated with the rotary kiln body, and the coal gas spinning disk is installed on the secondary gas pipe near secondary gas port place.
Also comprise eddy flow airduct, eddy flow wind control valve, air swirl sheet and eddy flow wind snout, one end of eddy flow airduct is communicated with the rotary kiln body, eddy flow wind control valve is installed on the eddy flow airduct, the eddy flow wind snout is arranged on the end that the eddy flow airduct is communicated with the rotary kiln body, and the air swirl sheet is installed on the eddy flow airduct near eddy flow wind snout place.
Airduct, eddy flow airduct, gas pipe and secondary gas pipe are installed together by connecting bolt, adpting flange, sealing gasket and gripper shoe successively from inside to outside.
Described burner is communicated with place's outer peripheral and is wound with nozzle place heat-barrier material with the rotary kiln body, the secondary air channel outer peripheral is wound with the passage refractory material, and passage refractory material and heat-barrier material junction, nozzle place are provided with sealing plate.
Adopt the technical solution of the utility model, had following technique effect:
1, because this burner has combustion gas and the design of combustion air bispin stream, oxygenized air combustion supporting can be used, low-heat value gas can be utilized.Combustion gas has two kinds of approach to enter the burner combustion passage, combustion air has three kinds of approach to enter the burner combustion passage, fuel gases calorific value and the variation of combustion air oxygen-rich concentration had very strong adjusting adaptive capacity, it is combustion-supporting to strengthen combustion gas, guarantee that fuel gas with low heat value realizes completing combustion under low air coefficient of excess, improve the thermal efficiency, fuel savings, minimizing discharge amount of exhaust gas and air pollution, energy-saving effect is remarkable.
2, these burner energy-conserving and environment-protective, low nitrogen low-carbon (LC) effect are obvious.Facts have proved: the every raising 0.1% of oxygen-enriched combustion-supporting air, theoretical temperature combustion improve 30 ℃, and the oxygen-enriched combustion-supporting air is when reach 28%, and is energy-conservation 30%, minimizing CO
2Discharging is near 30%, and the smoke backflow passage reduces NO
XDischarging, oxygen-enriched combustion-supporting air reduce NO when reaching 28%
XDischarging is near 80%.
3, economic benefit is obvious.Low-heat value gas such as burning blast furnace gas, theoretical temperature combustion reaches 13 20 ℃, satisfies the heating furnace production requirement fully, not only saves the coke-stove gas of high price, and displaced the coke-stove gas of high heating value, for exploitation coke-stove gas chemical products or realize that hydrogen metallurgy created prerequisite.
4, can be under heating value working condition, stablize the heating furnace working condition, embody this burner easily and implement oxygen-enriched combusting quantification effect, help enterprise's firm enforcement oxygen-enriched combusting confidence and power, help the promotion and application of national " Energy Management Contract " pattern of vigorously advocating, help the realization of national energy-saving and emission-reduction strategic objective.
Description of drawings
Fig. 1 is the structural representation that is used for the oxygen-enriched combustion-supporting burner of rotary kiln in the utility model specific embodiment.
Fig. 2 is the schematic cross-section at spout place that is used for the oxygen-enriched combustion-supporting burner of rotary kiln in the utility model specific embodiment.
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by the specific embodiment.
The oxygen-enriched combustion-supporting burner that is used for rotary kiln of the present utility model is a kind of rotary kiln oxygen-enriched burning device of suitable low-heat value gas, it is in the oxygen-rich concentration fluctuation separately in a big way of fuel gases calorific value and combustion air, even under the condition of double oscillation, do not need to change burner, can both reach a plurality of design conditions, especially the length of flame can realize the more adjusting of wide region, realizes the completing combustion of low air-fuel ratio, finally realizes the purpose of energy-saving and emission-reduction.
Fig. 1 is the structural representation that is used for the oxygen-enriched combustion-supporting burner of rotary kiln in the specific embodiment of the invention.As shown in Figure 1, this oxygen-enriched combustion-supporting burner that is used for rotary kiln comprises airduct 1 one time, a wind control valve 2, eddy flow wind control valve 3, eddy flow airduct 4, a gas regulator 5, a gas pipe 6, secondary gas regulator 7, secondary gas pipe 8, sealing steel plate 9, passage refractory material 10, nozzle place heat-barrier material 11, coal gas spinning disk 12, secondary gas port 13, a gas port 14, eddy flow wind snout 15, a wind snout 16, connecting bolt 17, adpting flange 18, sealing gasket 19, gripper shoe 20, rotary kiln body 21, air swirl sheet 22, secondary air channel 23 and secondary wind inlet 24.
One end of a gas pipe is communicated with the rotary kiln body, gas regulator is installed on gas pipe, a gas port is arranged on an end of a gas pipe connection rotary kiln body, one time gas pipe passes through a gas port to rotary kiln body delivery of fuel gas, and one time gas regulator is regulated a gas pipe to rotary kiln body delivery of fuel gas.
One end of secondary gas pipe is communicated with the rotary kiln body, the secondary gas regulator is installed on the secondary gas pipe, the secondary gas port is arranged on the end that the secondary gas pipe is communicated with the rotary kiln body, the coal gas spinning disk is installed on the secondary gas pipe near secondary gas port place, the secondary gas pipe by coal gas spinning disk and secondary gas port to rotary kiln body delivery of fuel gas, the coal gas spinning disk produces the eddy flow combustion gas, and the secondary gas regulator is regulated the secondary gas pipe to rotary kiln body delivery of fuel gas.
One end of an airduct is communicated with the rotary kiln body, wind control valve is installed on airduct, a wind snout is arranged on an end of an airduct connection rotary kiln body, one time airduct is carried combustion air by a wind snout to the rotary kiln body, and a wind control valve is regulated an airduct and carried combustion air to the rotary kiln body.
One end of secondary air channel is communicated with the rotary kiln body, and secondary wind inlet is arranged on the end that secondary air channel is communicated with the rotary kiln body, and secondary air channel is carried combustion air by secondary wind inlet to the rotary kiln body.
One end of eddy flow airduct is communicated with the rotary kiln body, eddy flow wind control valve is installed on the eddy flow airduct, the eddy flow wind snout is arranged on the end that the eddy flow airduct is communicated with the rotary kiln body, the air swirl sheet is installed on the eddy flow airduct near eddy flow wind snout place, the eddy flow airduct is carried combustion air by air swirl sheet and eddy flow wind snout to the rotary kiln body, the air swirl sheet produces the eddy flow combustion air, and eddy flow wind control valve is regulated the eddy flow airduct and carried combustion air to the rotary kiln body.
Fig. 2 is the schematic cross-section at spout place that is used for the oxygen-enriched combustion-supporting burner of rotary kiln in the utility model specific embodiment.As shown in Figure 2, airduct, eddy flow airduct, gas pipe and secondary gas pipe are installed together by connecting bolt, adpting flange, sealing gasket and gripper shoe in the mode of pipe-in-pipe successively from inside to outside.The eddy flow airduct is equipped with the air swirl sheet at eddy flow wind snout place, and the secondary gas pipe is equipped with the coal gas spinning disk at secondary coal gas spray deduction.
Burner is communicated with place's outer peripheral and is wound with nozzle place heat-barrier material with the rotary kiln body, the secondary air channel outer peripheral is wound with the passage refractory material, and passage refractory material and heat-barrier material junction, nozzle place are provided with sealing plate.
The using method that this is used for the oxygen-enriched combustion-supporting burner of rotary kiln is described below, technological process just:
This burner uses the coal gas amount according to load aspect combustion gas, by gas pipe and these two pipelines of secondary gas pipe to the rotary kiln delivery of fuel gas.This burner according to the load actual air volume, is carried combustion air by these three pipelines of airduct, secondary air channel and eddy flow airduct to rotary kiln aspect combustion air.
The combustion gas of the secondary gas pipe being carried to rotary kiln by the coal gas spinning disk transfers the eddy flow combustion gas to, and the combustion air of the eddy flow airduct being carried to rotary kiln by the air swirl sheet transfers the eddy flow combustion air to.
And, regulate pressure, calorific value and the flow of secondary gas pipe to rotary kiln body delivery of fuel gas by the secondary gas regulator by pressure, calorific value and the flow of gas pipe of a gas regulator adjusting to rotary kiln body delivery of fuel gas.One time gas pipe can adopt different calorific values to the combustion gas of rotary kiln conveying with the combustion gas that the secondary gas pipe is carried to rotary kiln.
By pressure, oxygen-enriched content and the flow of airduct of a wind control valve adjusting, regulate the eddy flow airduct is carried pressure from combustion air to the rotary kiln body, oxygen-enriched content and flow by eddy flow wind control valve to rotary kiln body conveying combustion air.One time airduct adopts different oxygen content to the combustion air of rotary kiln conveying, combustion air and the eddy flow airduct that secondary air channel is carried to rotary kiln to the combustion air of rotary kiln conveying.
By adjusting, thereby regulate the ratio of combustion air flow and gas flow to combustion air and gas flow.
One combustion gas or add one eddy flow combustion gas again is with two strands of direct current airs or add the mixed combustion in burning gallery of another strand rotational flow air again.Facts have proved that the regulating effect of the changeable combination by combustion gas and combustion air has guaranteed at gas flow 1.5 * 104～5 * 104M
3Under/S the condition, the longest length of flame of burner reaches 11m, length of flame adjustable range reaches 1: 5.5 than (the shortest flame is than the longest flame), and heating demand capacity adjustment ratio (minimum load is than peak load) reaches 1: 10, and can make the material heating more even.
The diameter of coal gas spinning disk connecting rod and the design of coal gas spinning disk have many cover matable assemblies, are easy to dismounting and change.By changing the combustion gas design current velocity, the combustion gas spouting velocity can be changed into inferior high speed, be convenient to mate the combustion air of different calorific values and different oxygen-enriched concentration, to realize completing combustion.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the utility model; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (5)
1. an oxygen-enriched combustion-supporting burner that is used for rotary kiln is characterized in that, comprises a gas pipe, a gas regulator, a gas port, an airduct, a wind control valve, wind snout, secondary air channel and a secondary wind inlet, wherein,
One end of a gas pipe is communicated with the rotary kiln body, and gas regulator is installed on gas pipe, and gas port is arranged on the end that gas pipe is communicated with the rotary kiln body;
One end of an airduct is communicated with the rotary kiln body, and wind control valve is installed on airduct, and wind snout is arranged on the end that airduct is communicated with the rotary kiln body;
One end of secondary air channel is communicated with the rotary kiln body, and secondary wind inlet is arranged on the end that secondary air channel is communicated with the rotary kiln body.
2. a kind of oxygen-enriched combustion-supporting burner that is used for rotary kiln according to claim 1, it is characterized in that, also comprise secondary gas pipe, secondary gas regulator, coal gas spinning disk and secondary gas port, one end of secondary gas pipe is communicated with the rotary kiln body, the secondary gas regulator is installed on the secondary gas pipe, the secondary gas port is arranged on the end that the secondary gas pipe is communicated with the rotary kiln body, and the coal gas spinning disk is installed on the secondary gas pipe near secondary gas port place.
3. according to claim 1 or 2 described a kind of oxygen-enriched combustion-supporting burners that are used for rotary kiln, it is characterized in that, also comprise eddy flow airduct, eddy flow wind control valve, air swirl sheet and eddy flow wind snout, one end of eddy flow airduct is communicated with the rotary kiln body, eddy flow wind control valve is installed on the eddy flow airduct, the eddy flow wind snout is arranged on the end that the eddy flow airduct is communicated with the rotary kiln body, and the air swirl sheet is installed on the eddy flow airduct near eddy flow wind snout place.
4. a kind of oxygen-enriched combustion-supporting burner that is used for rotary kiln according to claim 3, it is characterized in that airduct, eddy flow airduct, gas pipe and secondary gas pipe are installed together by connecting bolt, adpting flange, sealing gasket and gripper shoe successively from inside to outside.
5. a kind of oxygen-enriched combustion-supporting burner that is used for rotary kiln according to claim 3, it is characterized in that, described burner is communicated with place's outer peripheral and is wound with nozzle place heat-barrier material with the rotary kiln body, the secondary air channel outer peripheral is wound with the passage refractory material, and passage refractory material and heat-barrier material junction, nozzle place are provided with sealing plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201550867U CN202066336U (en) | 2011-05-16 | 2011-05-16 | Oxygen-enriched combustion-supporting burner for rotary kiln |
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| CN2011201550867U CN202066336U (en) | 2011-05-16 | 2011-05-16 | Oxygen-enriched combustion-supporting burner for rotary kiln |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261836A (en) * | 2011-05-16 | 2011-11-30 | 鞍山普贝达科技有限公司 | Oxygen-enriched combustion-supporting burner used for rotary kiln and use method thereof |
| CN102878799A (en) * | 2012-08-06 | 2013-01-16 | 闻喜县白玉矿业有限公司 | Megnesium ore calcination rotary kiln burning gun |
| CN103090665A (en) * | 2012-11-30 | 2013-05-08 | 沈光林 | Partial oxygenation combustion-supporting device and method for rotary kiln |
| CN103175394A (en) * | 2013-03-01 | 2013-06-26 | 大连易世达新能源发展股份有限公司 | Energy-saving emission-reducing partial oxygen-increasing combustion-supporting device used for cement kiln |
| CN103185340A (en) * | 2011-12-30 | 2013-07-03 | 中冶长天国际工程有限责任公司 | Anti-tar-blocking nozzle system and nozzle tar treatment method adopting same |
| CN103411420A (en) * | 2013-08-31 | 2013-11-27 | 魏伯卿 | Oxygen-rich partial oxygenation jet-flow combustion-supporting energy-saving emission-reducing system for rotary kiln |
| CN103438699A (en) * | 2013-09-07 | 2013-12-11 | 魏伯卿 | Oxygen-enriched-catalyzing, energy-saving and emission-reducing system for decomposition furnace of rotary kiln |
-
2011
- 2011-05-16 CN CN2011201550867U patent/CN202066336U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261836A (en) * | 2011-05-16 | 2011-11-30 | 鞍山普贝达科技有限公司 | Oxygen-enriched combustion-supporting burner used for rotary kiln and use method thereof |
| CN103185340A (en) * | 2011-12-30 | 2013-07-03 | 中冶长天国际工程有限责任公司 | Anti-tar-blocking nozzle system and nozzle tar treatment method adopting same |
| CN103185340B (en) * | 2011-12-30 | 2015-11-25 | 中冶长天国际工程有限责任公司 | The combustion nozzle system of anti-blocking tar and the burner tar processing method of employing said system |
| CN102878799A (en) * | 2012-08-06 | 2013-01-16 | 闻喜县白玉矿业有限公司 | Megnesium ore calcination rotary kiln burning gun |
| CN102878799B (en) * | 2012-08-06 | 2014-12-10 | 运城市中金矿业有限公司 | Megnesium ore calcination rotary kiln burning gun |
| CN103090665A (en) * | 2012-11-30 | 2013-05-08 | 沈光林 | Partial oxygenation combustion-supporting device and method for rotary kiln |
| CN103090665B (en) * | 2012-11-30 | 2014-10-15 | 沈光林 | Partial oxygenation combustion-supporting device |
| CN103175394A (en) * | 2013-03-01 | 2013-06-26 | 大连易世达新能源发展股份有限公司 | Energy-saving emission-reducing partial oxygen-increasing combustion-supporting device used for cement kiln |
| CN103411420A (en) * | 2013-08-31 | 2013-11-27 | 魏伯卿 | Oxygen-rich partial oxygenation jet-flow combustion-supporting energy-saving emission-reducing system for rotary kiln |
| CN103411420B (en) * | 2013-08-31 | 2014-10-01 | 魏伯卿 | Oxygen-rich partial oxygenation jet-flow combustion-supporting energy-saving emission-reducing system for rotary kiln |
| CN103438699A (en) * | 2013-09-07 | 2013-12-11 | 魏伯卿 | Oxygen-enriched-catalyzing, energy-saving and emission-reducing system for decomposition furnace of rotary kiln |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20130516 |