CN101769537A - Oxygen-enriched burning device burning inferior coal - Google Patents
Oxygen-enriched burning device burning inferior coal Download PDFInfo
- Publication number
- CN101769537A CN101769537A CN201010034027A CN201010034027A CN101769537A CN 101769537 A CN101769537 A CN 101769537A CN 201010034027 A CN201010034027 A CN 201010034027A CN 201010034027 A CN201010034027 A CN 201010034027A CN 101769537 A CN101769537 A CN 101769537A
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- Prior art keywords
- oxygen
- enriched
- burning
- oxygen enrichment
- inner sleeve
- Prior art date
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- 239000001301 oxygen Substances 0.000 title claims abstract description 105
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 105
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims description 38
- 229910052571 earthenware Inorganic materials 0.000 claims description 6
- 150000002926 oxygen Chemical class 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract 2
- 239000002817 coal dust Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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 invention relates to an oxygen-enriched burning device burning inferior coal. The device comprises oxygen-enriched nozzles, an outer sleeve, a sliding device, oxygen-enriched channels, an inner sleeve and a burning part, wherein the burning part, the inner sleeve and the outer sleeve are distributed in a concentric circle way, and the burning part is arranged at the innermost layer. The oxygen-enriched channel consists of a heat-resisting pipe and a ceramic pipe, and the ceramic pipe is sleeved in the heat-resisting pipe; and the oxygen-enriched channels are nested and fixed in the sliding device and can slide radially between the inner and the outer sleeves. The sliding device is composed of a sliding block fixed on the heat-resisting pipe, an outer chute fixed on the outer sleeve and an inner chute fixed on the inner sleeve. More than two oxygen-enriched channels are uniformly distributed between the inner and the outer sleeves; and a group of oxygen-enriched nozzles are arranged on each oxygen-enriched channel. The oxygen-enriched nozzles are arranged at the outlets of the oxygen-enriched channels, and each oxygen-enriched nozzle has a 15-75-degree angle with the axis of the burning part. The device solves the problems of unstable burning, low burning intensity and narrow adaption range of coal when the inferior coal is used on a furnace and a kiln, thereby improving the burning efficiency of the inferior coal.
Description
Technical field
The present invention relates to a kind of oxygen-enriched burning device of burning inferior coal, be inferior fuel combustion apparatus field.
Background technology
The fuel that each big stove of current China, kiln enterprise use mostly is bituminous coal, the brown coal of high-quality.But because of factors such as its skewness, cost of transportation height and rise in price, more producers have turned one's attention in the use of colm.Utilizing the oxygen enrichment principle to solve the coal combustion problem, is present comparatively advanced and mature method.
Propose in high-temp oxygen-enriched air fire lighting method for coal powder boiler that publication number CN1752524A patent documentation proposes and the device, coal dust is divided into three strands: the shallow bid coal dust enters in the igniting chamber, meets to mix with oxygen enrichment in the high-temperature oxygen-enriched chamber and is lighted; And then the more coal dust in the coal dust sleeve pipe lighted, light the most of coal dust that still in the coal airduct, flows at last.Finish the classification ignition procedures of little fire point big fire.This device can be saved great amount of fuel oil, and is simple to operate, safe and reliable.But need to increase heater, investment improves; In pipeline the fraction coal dust is lighted, produced big calorimetric, pipeline material is had relatively high expectations and be cannot say for sure to demonstrate,prove in the big calorimetric safety of small space inner accumulated.
Propose in the coal gas that publication number CN101407381A patent documentation proposes, coal dust, oxygen-enriched mixed combustion method and the device, coal gas, coal dust and oxygen enrichment are sent to respectively to mix in stove, the kiln combustion chamber burn.Device therefor is the rifle shape jet pipe of a multilayer chamber structure.The jet pipe center is axial flow oxygen enrichment air channel, and second circle is a gas passage, and the 3rd circle is the coal dust passage, and the 4th circle is an inner cone eddy flow oxygen enrichment wind passage.Because of gas firing point is low, inflammable, it is mixed can promote the kiln temperature rapidly with coal dust, fast firing coal-dust.But fix between each air channel, flame is regulated underaction.
The oxygen enrichment method and the device of the raising burning clinker of cement temperature that publication number CN101407381A patent documentation proposes are partly to change oil gun into the oxygen enrichment passage, feed the pure oxygen of concentration more than 90% and enter into wind of combustion chamber neutralization, coal dust mixed combustion, solve the problem that the cement kiln combustion system requires ature of coal with this.This device can be good at burning inferior coal, but the oxygen enrichment passage is too single, can not guarantee to mix fully, evenly with wind, coal dust, and not strong to the adaptability of coal.
Therefore, utilize the idea of oxygen enrichment solution pulverized coal ignition, steady combustion very ripe at present, but device is still waiting further improvement, and also less to the research that utilizes the oxygen enrichment burning inferior coal.
Summary of the invention
The purpose of this invention is to provide a kind of simple to operation, regulate flexibly the colm oxygen-enriched burning device that the completion time of project is short, strong to coal adaptability.
Technical scheme of the present invention is as follows:
A kind of oxygen-enriched burning device of burning inferior coal, described oxygen-enriched burning device contain oxygen enrichment nozzle, outer tube, carriage, oxygen enrichment passage, inner sleeve and combustion component; Described combustion component, inner sleeve and outer tube are arranged concentric, and combustion component is arranged on inner sleeve inside; Described oxygen enrichment passage is made up of heat-resistant tube and the earthenware that is arranged on this heat-resistant tube inside, and be provided with the oxygen enrichment nozzle at the port of export of oxygen enrichment passage, this oxygen enrichment passage is nested and be fixed in the described carriage, and slides along central axial direction between inner sleeve and outer tube; Described carriage is by being fixed on slide block on the heat-resistant tube, being fixed on the external chute on the outer tube and the internal chute that is fixed on the inner sleeve constitutes.
In the technique scheme, described combustion component is a tubular structure; Described oxygen enrichment passage is more than two, is the center of circle with the combustion component central axis, is evenly arranged between inner sleeve and the outer tube; One group of oxygen enrichment nozzle is set on each oxygen enrichment passage, and the oxygen enrichment nozzle sets adopts with the oxygen enrichment passage and is threaded.Form 15～75 ° angle between described oxygen enrichment nozzle centerline and the combustion component central axis.The radius R of inner sleeve is 1～1.5 times of combustion component outer tube diameter.
The present invention compares with prior art, has the following advantages and the high-lighting effect: need not change existing combustion component structure, the saving funds shorten the completion time of project; It is between the inside and outside sleeve pipe at center that the oxygen enrichment passage is evenly arranged in the combustion component axis, and the oxygen enrichment nozzle is logical and the combustion component axis between angle be 15-75 °, the oxygen of concentration more than 90% is injected at a relatively high speed in the combustion chamber and carries out sufficient disturbance mixing with wind powder mixture, is beneficial to the fuel after-flame; The oxygen enrichment passage moves by the chute upper edge combustion component axis of the slide block on the steel pipe between inside and outside sleeve pipe, regulates the position that oxygen sprays into, and changes the position, high-temperature region; The oxygen enrichment nozzle is connected with the oxygen enrichment passage by screw thread, is convenient for changing equipment.
Description of drawings
Among the figure: 1-oxygen enrichment nozzle; The 2-outer tube; The 3-external chute; The 4-slide block; The 5-heat-resistant tube; The 6-earthenware; The 7-internal chute; The 8-inner sleeve; The 9-combustion component
Fig. 1 is the schematic diagram of oxygen-enriched burning device involved in the present invention.
Fig. 2 is the A-A schematic diagram of oxygen-enriched burning device involved in the present invention.
Fig. 3 looks schematic diagram for the oxygen enrichment nozzle master of oxygen-enriched burning device involved in the present invention.
Fig. 4 looks schematic diagram for the chute slide block left side of oxygen-enriched burning device involved in the present invention.
The specific embodiment
Describe concrete structure of the present invention, operation principle and embodiment in detail below in conjunction with accompanying drawing 1:
Fig. 1 is the schematic diagram of oxygen-enriched burning device involved in the present invention, and described oxygen-enriched burning device contains oxygen enrichment nozzle 1, outer tube 2, carriage, oxygen enrichment passage, inner sleeve 8 and combustion component 9; Described combustion component 9, inner sleeve 8 and outer tube 2 are arranged concentric, and combustion component 9 is arranged on inner sleeve 2 inside, is followed successively by combustion component, inner sleeve and outer tube from the inside to surface.Combustion component 9 can adopt conventional burner, and air and coal dust spray into from this burner.The oxygen enrichment passage is made up of heat-resistant tube 5 and the earthenware 6 that is arranged on this heat-resistant tube inside, the oxygen enrichment passage is nested and be fixed in the described carriage, and can be between inner sleeve 8 and outer tube 2 slide along central axial direction, be provided with oxygen enrichment nozzle 1 at the port of export of oxygen enrichment passage.Carriage is by being fixed on slide block 4 on the heat-resistant tube, being fixed on the external chute 3 on the outer tube and the internal chute 7 that is fixed on the inner sleeve constitutes.
The present invention is arranged under the hot environment, and for guaranteeing in hot environment the present invention not by the oxygen rich gas oxidation in the oxygen enrichment passage, the material require of oxygen enrichment channel part is high temperature resistant and do not react with oxygen.Therefore, oxygen enrichment passage of the present invention designs for Double layer pipeline, and inner and oxygen contact portion adopts earthenware 6, and is oxidized to prevent that it from contacting with oxygen under hot conditions; The passage skin is a heat-resistant tube 5, is out of shape and carbonization under hot conditions to prevent it.Earthenware 6 is arranged in the heat-resistant tube 5, with heat-resistant tube 6 with the socket of concentric circles sleeve pipe mode, formed the oxygen enrichment passage.
For reaching the condition of abundant oxygen enrichment, the oxygen enrichment passage can be provided with more than two, is the center of circle with the combustion component central axis, is evenly arranged between inner sleeve 8 and the outer tube 2.The radius R of inner sleeve is 1～1.5 times of combustion component outer tube diameter.
One group of oxygen enrichment nozzle is set on each oxygen enrichment passage, and the oxygen enrichment nozzle adopts with the oxygen enrichment passage and is threaded.Being threaded between oxygen enrichment nozzle and the oxygen enrichment passage can be so that the oxygen enrichment nozzle exchange be simple to operation.
Claims (4)
1. the oxygen-enriched burning device of a burning inferior coal, it is characterized in that: described oxygen-enriched burning device contains oxygen enrichment nozzle (1), outer tube (2), carriage, oxygen enrichment passage, inner sleeve (8) and combustion component (9); Described combustion component, inner sleeve and outer tube are arranged concentric, and combustion component (9) is arranged on inner sleeve (2) inside; Described oxygen enrichment passage is made up of heat-resistant tube (5) and the earthenware (6) that is arranged on this heat-resistant tube inside, and be provided with the oxygen enrichment nozzle at the port of export of oxygen enrichment passage, this oxygen enrichment passage is nested and be fixed in the described carriage, and slides along central axial direction between inner sleeve (8) and outer tube (2); Described carriage is by being fixed on slide block (4) on the heat-resistant tube, being fixed on the external chute (3) on the outer tube and the internal chute (7) that is fixed on the inner sleeve constitutes.
2. according to the oxygen-enriched burning device of the described a kind of burning inferior coal of claim 1, it is characterized in that: described combustion component (9) is a tubular structure; Described oxygen enrichment passage adopts more than two, is the center of circle with combustion component (9) center, is evenly arranged between inner sleeve (8) and the outer tube (2).
3. the oxygen-enriched burning device of a kind of burning inferior coal according to claim 1 and 2 is characterized in that: form 15～75 ° angle between the central axis of described oxygen enrichment nozzle and combustion component (9).
4. the oxygen-enriched burning device of a kind of burning inferior coal according to claim 3, it is characterized in that: the radius R of described inner sleeve (8) is 1～1.5 times of combustion component (9) outer tube diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100340274A CN101769537B (en) | 2010-01-12 | 2010-01-12 | Oxygen-enriched burning device burning inferior coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100340274A CN101769537B (en) | 2010-01-12 | 2010-01-12 | Oxygen-enriched burning device burning inferior coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101769537A true CN101769537A (en) | 2010-07-07 |
| CN101769537B CN101769537B (en) | 2012-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100340274A Expired - Fee Related CN101769537B (en) | 2010-01-12 | 2010-01-12 | Oxygen-enriched burning device burning inferior coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101769537B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146300A (en) * | 2011-02-23 | 2011-08-10 | 惠生工程（中国）有限公司 | Combined burning platform |
| CN107246607A (en) * | 2017-07-06 | 2017-10-13 | 山西大学 | A kind of automatic stable burning system for Process In A Tangential Firing |
| CN108369000A (en) * | 2015-12-23 | 2018-08-03 | Fl史密斯公司 | Burner for kiln |
| CN109264792A (en) * | 2018-10-22 | 2019-01-25 | 安徽理工大学 | A kind of CoFe2O4The preparation method of nanoparticle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366695Y (en) * | 1998-12-30 | 2000-03-01 | 宝山钢铁(集团)公司 | Burner with high rich oxygen air |
| US6085674A (en) * | 1999-02-03 | 2000-07-11 | Clearstack Combustion Corp. | Low nitrogen oxides emissions from carbonaceous fuel combustion using three stages of oxidation |
| US6978726B2 (en) * | 2002-05-15 | 2005-12-27 | Praxair Technology, Inc. | Combustion with reduced carbon in the ash |
| CN1752524A (en) * | 2004-09-21 | 2006-03-29 | 北京国力能高科技有限公司 | High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof |
| CN101407381A (en) * | 2008-11-12 | 2009-04-15 | 昆明阳光基业股份有限公司 | Oxygen-enriched combustion process for improving cement kiln clinker calcining temperature and apparatus thereof |
| CN101556039B (en) * | 2009-05-14 | 2010-09-01 | 西安建筑科技大学 | Oxygen-enriched burner |
-
2010
- 2010-01-12 CN CN2010100340274A patent/CN101769537B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146300A (en) * | 2011-02-23 | 2011-08-10 | 惠生工程（中国）有限公司 | Combined burning platform |
| CN108369000A (en) * | 2015-12-23 | 2018-08-03 | Fl史密斯公司 | Burner for kiln |
| CN107246607A (en) * | 2017-07-06 | 2017-10-13 | 山西大学 | A kind of automatic stable burning system for Process In A Tangential Firing |
| CN107246607B (en) * | 2017-07-06 | 2023-05-30 | 山西大学 | Automatic stable combustion system for four-corner tangential boiler |
| CN109264792A (en) * | 2018-10-22 | 2019-01-25 | 安徽理工大学 | A kind of CoFe2O4The preparation method of nanoparticle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101769537B (en) | 2012-02-22 |
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