CN202647834U - Long heat-resistant oxygen-enriched combustion-supporting spray gun for rotary kiln - Google Patents
Long heat-resistant oxygen-enriched combustion-supporting spray gun for rotary kiln Download PDFInfo
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- CN202647834U CN202647834U CN2012203153791U CN201220315379U CN202647834U CN 202647834 U CN202647834 U CN 202647834U CN 2012203153791 U CN2012203153791 U CN 2012203153791U CN 201220315379 U CN201220315379 U CN 201220315379U CN 202647834 U CN202647834 U CN 202647834U
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- spray gun
- heat
- steel pipe
- oxygen
- high temperature
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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 long heat-resistant oxygen-enriched combustion-supporting spray gun for a rotary kiln comprises an ordinary steel pipe spray gun body, a heat-resistant oxygen-enriched spray nozzle welded to one end of the ordinary steel pipe spray gun body, and a spray gun heat-insulating layer wrapping the periphery of the ordinary steel pipe spray gun body. The long spray gun is characterized in that the heat-resistant oxygen-enriched spray nozzle is welded at one end of the ordinary steel pipe spray gun body; a plurality of asymmetric spray gun heat-insulating material fixing rivets are welded on the outer side of the ordinary steel pipe spray gun body; the spray gun heat-insulating layer is fixed on the spray gun heat-insulating material fixing rivets on the outside of the ordinary steel pipe spray gun body; the heat-insulating material is selected according to the temperature of the rotary kiln to resist a temperature about 1,500 DEG C to 1,700 DEG C; and the ordinary heat-insulating material has the property that the strength and the heat-insulating property are inversely proportional, that is to say, the higher the strength is, the worse the heat-insulating property is, so that during the manufacturing process, the heat-insulating material first needs to be wrapped and fixed with a galvanized iron sheet and then go through two steps of heat-insulating layer thermal treatment: first, baking at a medium temperature for 120 hours to 180 hours and then firing at a high temperature for 48 hours to 120 hours to be shaped.
Description
Technical field
The present invention relates to rotary kiln with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting, be applicable to all types of rotary kilns, belong to synthetic energy-saving discharge-reducing technical field and field of combustion technology.
Background technology
Local oxygen-enriched oxygen enriching burning-aid power-saving technology has been used for many years at home, but the successful example of using in rotary kiln is few, mainly be because the oxygen enrichment spray gun of rotary kiln requires oversize, General Requirements is more than 4 meters, and this greatly enhances high-temperature resistant tube 4 meters more, in the higher rotary kiln of some temperature, make and have more than is neededly how long softening transform will occur, thereby it is combustion-supporting that a small amount of oxygen rich gas can not be sprayed in the combustion flame, but domestic have 7 industries using rotary kiln, with the quantity of rotary kiln up to tens0000, and the thermal efficiency overwhelming majority of rotary kiln is about 50% ~ 60%, and conventional method can't improve its thermal efficiency, only has local oxygen-enriched combustion-assistance technology can improve significantly its combustion thermal efficiency; So the energy-conservation market of the oxygen enrichment of the rotary kiln of a huge quantity is but because of the former of oxygen enrichment spray gun thereby can't use, and this just requires our oxygen enrichment worker, invents a kind of long spray gun of high temperature resistant oxygen-enriched combustion-supporting that can be applied to muchly rotary kiln.
Summary of the invention
The purpose of this invention is to provide a kind of can under higher temperature, use and the rotary kiln that carries heat-insulation layer of permanency shape with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting.
Rotary kiln comprises steel pipe gun body and the spray gun heat-insulation layer that is welded in the high temperature resistant rich-oxygen nozzle of one end and is wrapped in its periphery with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting, it is characterized in that:
1, high temperature resistant rich-oxygen nozzle is welded in an end of steel pipe gun body, the steel pipe gun body outside is welded with a plurality of asymmetric spray gun insulation material fixing rivets, the spray gun heat-insulation layer is fixed on the spray gun insulation material fixing rivet in the steel pipe gun body outside, choosing according to the furnace temperature of rotary kiln of insulation material selected high temperature resistant about 1500 ℃ ~ 1700 ℃, because the characteristic of general insulation material is that intensity and heat insulating ability are inversely proportional to, be that its higher heat-insulating property of intensity is poorer, so on the make need to wrap with galvanized iron sheet; Then through the heat treatment of twice heat-insulation layer: the temperature baking is 120 ~ 180 hours first, again high-temperature firing typing in 48 ~ 120 hours.
2, the spray gun heat-insulation layer in steel pipe gun body and the high temperature resistant rich-oxygen nozzle outside is a straight barrel type of easily making; the nozzle closing in section of high temperature resistant rich-oxygen nozzle is the interstice coverage of rich-oxygen nozzle mouth outer periphery; pack into the insulation material that same material and making are shaped; and use the filled thermal insulation materials sealing thermal insulation, to protect high temperature resistant rich-oxygen nozzle.
3, the thickness of insulation material: according to the temperature of kiln head of rotary kiln, calculate the thickness that uses heat-insulation layer, both made the steel pipe gun body not by scaling loss, can allow again the thickness of heat-insulation layer drop to minimum to alleviate the weight of heat-insulation layer, simultaneously can also allow the oxygen rich air physical efficiency of flowing through in steel pipe spray gun tagma, obtain good preheating, general anti-about 1100 ℃ ~ 1700 ℃ insulation bed thickness 60mm ~ 150mm.
The present invention compared with prior art has the following advantages:
1. the oxygen enrichment spray gun that is used for now rotary kiln adopts the high temperature resistant steel pipe of 310S mostly; and without any safeguard measure; its actual heat resisting temperature is about 1100 ℃, and heat resisting temperature of the present invention reaches as high as 1700 ℃, can satisfy the requirement of domestic nearly all rotary kiln.
Description of drawings
Fig. 1 is the cross-sectional view of the embodiment of the invention.
Among Fig. 1: 1, rich-oxygen nozzle mouth 2, gun slot insulation material 3, nozzle closing in 4, high temperature resistant rich-oxygen nozzle 5, steel pipe gun body 6, spray gun heat-insulation layer 7, spray gun insulation material fixing rivet.
The specific embodiment
In the embodiment shown in fig. 1: rotary kiln is with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting, comprise steel pipe gun body 5 and the spray gun heat-insulation layer 6 that is welded in the high temperature resistant rich-oxygen nozzle 4 of one end and is wrapped in its periphery, high temperature resistant rich-oxygen nozzle 4 is welded in an end of steel pipe gun body 5, steel pipe gun body 5 outsides are welded with a plurality of asymmetric spray gun insulation material fixing rivets 7, spray gun heat-insulation layer 6 is fixed on the spray gun insulation material fixing rivet 7 in steel pipe gun body 5 outsides, choosing according to the furnace temperature of rotary kiln of insulation material selected high temperature resistant about 1500 ℃ ~ 1700 ℃, because the characteristic of general insulation material is that intensity and heat insulating ability are inversely proportional to, be that its higher heat-insulating property of intensity is poorer, so on the make need to wrap with galvanized iron sheet; Then through the heat treatment of twice heat-insulation layer: the temperature baking is 120 ~ 180 hours first, again high-temperature firing typing in 48 ~ 120 hours.
The spray gun heat-insulation layer 6 in steel pipe gun body 5 and high temperature resistant rich-oxygen nozzle 4 outsides is a straight barrel type of easily making; the nozzle of high temperature resistant rich-oxygen nozzle 43 sections that close up are the interstice coverage of rich-oxygen nozzle mouth 1 outer periphery; pack into the insulation material that same material and making are shaped; and use the filled thermal insulation materials sealing thermal insulation, to protect high temperature resistant rich-oxygen nozzle 4.
The thickness of insulation material: according to the temperature of kiln head of rotary kiln, calculate the thickness that uses heat-insulation layer, both made steel pipe gun body 5 not by scaling loss, can allow again the thickness of heat-insulation layer drop to minimum to alleviate the weight of heat-insulation layer, simultaneously can also allow the oxygen rich air physical efficiency of flowing through in steel pipe gun body 5 districts, obtain good preheating, general anti-about 1500 ℃ ~ 1700 ℃ insulation bed thickness 80mm ~ 150mm.
Claims (3)
1. rotary kiln is with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting, the spray gun heat-insulation layer (6) that comprises steel pipe gun body (5) and be welded in the high temperature resistant rich-oxygen nozzle (4) of one end and be wrapped in its periphery, it is characterized in that: high temperature resistant rich-oxygen nozzle (4) is welded in an end of steel pipe gun body (5), steel pipe gun body (5) outside is welded with a plurality of asymmetric spray gun insulation material fixing rivets (7), and spray gun heat-insulation layer (6) is fixed on the spray gun insulation material fixing rivet (7) in steel pipe gun body (5) outside.
2. rotary kiln as claimed in claim 1 is with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting, it is characterized in that: the spray gun heat-insulation layer (6) in steel pipe gun body (5) and high temperature resistant rich-oxygen nozzle (4) outside is a straight barrel type of easily making, nozzle closing in (3) section of high temperature resistant rich-oxygen nozzle (4) is the interstice coverage of rich-oxygen nozzle mouth (1) outer periphery, pack into the insulation material that same material and making are shaped, and use the filled thermal insulation materials sealing thermal insulation.
3. rotary kiln as claimed in claim 1 is characterized in that: the thickness of insulation material: anti-1100 ℃ ~ 1700 ℃ insulation bed thickness 60mm ~ 150mm with the long spray gun of high temperature resistant oxygen-enriched combustion-supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203153791U CN202647834U (en) | 2012-07-02 | 2012-07-02 | Long heat-resistant oxygen-enriched combustion-supporting spray gun for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203153791U CN202647834U (en) | 2012-07-02 | 2012-07-02 | Long heat-resistant oxygen-enriched combustion-supporting spray gun for rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN202647834U true CN202647834U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203153791U Expired - Fee Related CN202647834U (en) | 2012-07-02 | 2012-07-02 | Long heat-resistant oxygen-enriched combustion-supporting spray gun for rotary kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534499A (en) * | 2014-12-30 | 2015-04-22 | 广东梅雁吉祥水电股份有限公司 | Coal spraying gun with combined high-temperature-resistant structure |
-
2012
- 2012-07-02 CN CN2012203153791U patent/CN202647834U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534499A (en) * | 2014-12-30 | 2015-04-22 | 广东梅雁吉祥水电股份有限公司 | Coal spraying gun with combined high-temperature-resistant structure |
| CN104534499B (en) * | 2014-12-30 | 2016-08-17 | 广东梅雁吉祥水电股份有限公司 | Coal powder lance with combination type high-temperature-resistant structure |
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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: 20130102 Termination date: 20140702 |
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| EXPY | Termination of patent right or utility model |