CN102261669B - Oxygen enrichment preheating device with oxygen enrichment nozzles in combustion furnace - Google Patents
Oxygen enrichment preheating device with oxygen enrichment nozzles in combustion furnace Download PDFInfo
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- CN102261669B CN102261669B CN2010105151118A CN201010515111A CN102261669B CN 102261669 B CN102261669 B CN 102261669B CN 2010105151118 A CN2010105151118 A CN 2010105151118A CN 201010515111 A CN201010515111 A CN 201010515111A CN 102261669 B CN102261669 B CN 102261669B
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- oxygen
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- burner
- oxygen enrichment
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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
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Abstract
The invention provides an oxygen enrichment preheating device with oxygen enrichment nozzles in a combustion furnace. The device comprises tubular oxygen enrichment preheaters surrounding a combustor in the combustion furnace and oxygen enrichment nozzles connected with the tubular oxygen enrichment preheaters, wherein the oxygen enrichment nozzles are generally in symmetrical distribution on the periphery of the combustor and are provided with small diffusion angles. The oxygen enrichment preheating device is characterized in that the heat-resistant tubular oxygen enrichment preheaters are installed around the combustor in the combustion furnace and are adhered to or semi-buried in insulating layers which are arranged all around the combustor; the oxygen enrichment nozzles are directly welded on the tubular oxygen enrichment preheaters; in the connectors of the oxygen enrichment nozzles and the tubular oxygen enrichment preheaters in the combustion furnace, each oxygen enrichment nozzle tube is provided with inclined holes extending into the tubular oxygen enrichment preheater tube so as to block the flowing gas in the tubular oxygen enrichment preheater tube from directly entering the connecting pipe of the oxygen enrichment nozzles, wherein the inclined holes are opposite to the airflow direction and are of different lengths, thus the flow of the oxygen enrichment gas flowing through each oxygen enrichment nozzle is similar.
Description
Technical field
The present invention relates to oxygen enrichment preheating device in the combustion furnace with rich-oxygen nozzle, be applicable to the various Industrial Boilers, heating furnace, kiln, smelting furnace, incinerator of all fuel-firing gas-firings etc., belong to synthetic energy-saving discharge-reducing technical field and combustion science technical field.
Background technology
Along with the development of industry and agriculture deep processing industry, it is more and more worse that our existence living environment becomes, and therefore, the pressure of low-carbon economy, low-carbon (LC) life becomes increasing; The various Industrial Boilers of modern industry, heating furnace, kiln, smelting furnace, incinerator etc. are the maximum releasers of emission such as discharging carbon dioxide etc., so the discharging that reduces in industrial production is the key that realizes low-carbon economy, to protect mankind existence living environment; Present local oxygen-enriched oxygen enriching burning-aid energy-conserving and emission-cutting technology more and more becomes the favourite of energy-saving and emission-reduction in industrial production, and the great advantage of oxygen-enriched combustion-supporting energy-conserving and emission-cutting technology is that not only effects of energy saving and emission reduction is good, he also can return to the high-new integrated technology of former stove state at any time to Furnace body retrofit minimum (only having rich-oxygen nozzle to contact with body of heater with rich-oxygen preheater), operating parameter substantially constant (combustion air volume is turned down) simultaneously, but in implementation process, the preheating of oxygen enrichment is bother most and invest relatively large; For the combustion furnace system that implements flue gas heat recovery, draw heat-obtaining preheating oxygen rich gas the flue of flue gas under it, workload is large, cost is higher, and can not reduce heat loss; And for the combustion furnace system that does not implement flue gas heat recovery, from its flue heat-obtaining preheating oxygen rich gas, cost is too high and construction is complicated; Therefore, seeking a kind of safe, convenient and oxygen rich gas pre-heating mean with low cost, is the key of accelerating the high-new integrated technology promotion and implementation of local oxygen-enriched oxygenation jet combustion supporting energy-saving and emission-reduction process.
Summary of the invention
The purpose of this invention is to provide a kind of interior oxygen enrichment preheating device of combustion furnace with rich-oxygen nozzle safe, convenient and with low cost.
With oxygen enrichment preheating device in the combustion furnace of rich-oxygen nozzle, comprise being looped around combustion furnace inner burner tubular type rich-oxygen preheater on every side and the little angle of flare rich-oxygen nozzle that totally is symmetrically distributed in the burner periphery that is connected on the tubular type rich-oxygen preheater, it is characterized in that:
1, resistant to elevated temperatures tubular type rich-oxygen preheater is arranged on around the interior burner of combustion furnace, and be attached to or partly be embedded in the heat-insulation layer of burner surrounding, the oxygen rich gas preheating is drawn the heat of burner surrounding furnace bottom or furnace wall and is not affected heat radiation distribution in combustion furnace thermal radiation effect and combustion furnace.
2, rich-oxygen nozzle directly is welded on tubular preheater, and by burner and flame totally be symmetrically distributed in burner around, it specifically calculates by conditions such as heat radiation distributions in fuel nozzle, combustion flame and structure in the stove and stove in burner and adds experience and determine: the quantity of rich-oxygen nozzle and be welded in relative position and the angle of expecting nozzle in the position on tubular preheater and angle in stove, rich-oxygen nozzle and burner combustion.
3, be welded with the symmetrical rich-oxygen nozzle pipe of two or several and burner in stove on the oxygen enrichment economizer bank, rich-oxygen nozzle is connected on the rich-oxygen nozzle pipe, rich-oxygen nozzle Guan Youyi the angle of carrying on the back towards airflow direction, stretch in the tubular preheater pipe, directly enter the rich-oxygen nozzle pipe with the gas that flows in the oxygen enrichment economizer bank that is blocked in tubular preheater, and from tubular type rich-oxygen preheater oxygen rich gas entrance the rich-oxygen nozzle pipe close to more, its angle part that stretches in the oxygen enrichment economizer bank of tubular type rich-oxygen preheater is longer, thereby it is close to guarantee that the oxygen rich air physical efficiency of flowing through away from the rich-oxygen nozzle of oxygen rich gas entrance on the tubular type rich-oxygen preheater and other enter from oxygen rich gas oxygen rich gas flow and pressure that the different rich-oxygen nozzle of each distance of tubular type rich-oxygen preheater entrance flows through.
4, the relative position of rich-oxygen nozzle and combustion flame and angle also depend on the speed of fuel nozzle burner oil in burner, outside jet angle, the length of flame, combustion position, fuel nozzle mouth size, rare denseness of fuel, the jet velocity of oxygen rich gas and the type of little angle of flare rich-oxygen nozzle (200920195812.0) etc. in quantity, distribution and relative combustion device axis of each fuel nozzle of burner.The position of rich-oxygen nozzle and combustion flame is for injecting directly on hot oxygen rich gas the position of the slightly inclined to one side fuel nozzle in combustion flame centre in combustion furnace, and the angle of rich-oxygen nozzle and burner axis is 10o ~ 90o.
5, test and facts have proved that oxygen enrichment not only can not reduce the thermal efficiency of combustion furnace from furnace bottom or furnace wall heat-obtaining preheating oxygen rich gas around burner, the temperature of combustion centre's a part flame can be improved significantly on the contrary, thereby the radiation efficiency of burning can be improved significantly.
If a plurality of compact burners of relatively concentrating are arranged in 6 combustion furnaces, rich-oxygen preheater in stove can be designed to around a plurality of burner arrangement, the position of its rich-oxygen nozzle can be according to conditions such as combustion flames, and design is overall symmetrical or mal-distribution overall according to the burner block structural condition around a plurality of burners.
7, rich-oxygen nozzle by the main points that burner and flame etc. totally is symmetrically distributed in around burner is: determine as the case may be, and symmetrical or relatively several or all burners are totally symmetrical around each burner.
8, can not there be dead angle or the cecum that does not have oxygen rich gas to flow in the tubular type rich-oxygen preheater, to guarantee that in stove, rich-oxygen preheater is not by the high temperature scaling loss.
The present invention compared with prior art has the following advantages:
1. rich-oxygen preheater is placed on around burner in the stove, and directly connects with rich-oxygen nozzle, more convenient, simple, safety are installed.
2. because the heat that the oxygen enrichment preheating absorbs accounts for burning liberated heat ratio less, and do not change again the heat radiation environment in combustion furnace, so rich-oxygen preheater in the stove of mounting strap rich-oxygen nozzle can reduce cost and the complicated installment work of rich-oxygen preheater widely.
3. can be combined with burner and make standardized local oxygen enriching jet combustion supporting device, namely utilize the present invention can be with the individual difference of complexity larger and need strive the local oxygen enriching jet combustion supporting application integration technology that each combustion furnace is designed separately rich-oxygen nozzle and installation site and angle and realize standardization, standardization, summary, popular.Be more suitable in its large-area applying.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is middle A-A generalized section embodiment illustrated in fig. 1;
Fig. 3 is that middle rich-oxygen nozzle pipe angle embodiment illustrated in fig. 1 stretches into part-structure schematic diagram in economizer bank dorsad.
In figure: 1, oxygen enrichment economizer bank 2, rich-oxygen nozzle pipe 3, oxygen rich gas entrance 4, fuel nozzle 5, fuel nozzle mouth 6, burner 7, rich-oxygen nozzle 8, burner front end face 9, rich-oxygen nozzle pipe stretch into dorsad economizer bank interior angle part 10, rich-oxygen nozzle pipe and stretch into dorsad economizer bank interior angle part 11, oxygen rich gas flow path direction.
The specific embodiment
In the embodiment shown in Fig. 1-3: in stove oxygen enrichment economizer bank 1 be looped around combustion furnace inner burner 6 around, be attached to or partly be embedded in the heat-insulation layer of burner 6 surroundings, be welded with the symmetrical rich-oxygen nozzle pipe 2 of two or several and burner 6 in stove on oxygen enrichment economizer bank 1, rich-oxygen nozzle 7 is connected on rich-oxygen nozzle pipe 2, the spout of rich-oxygen nozzle 7 is facing to the axis of burner 6, and become the angle of 10o ~ 90o with burner 6 axis, make rich-oxygen nozzle 7 oxygen rich gas is sent to the zone of combustion flame appointment; Rich-oxygen nozzle pipe 2 stretches into the angle part 9 and 10 in oxygen enrichment economizer bank 1, angle is oxygen rich gas flow path direction 11 dorsad, and stretch into angle part 9 in oxygen enrichment economizer bank 1 from oxygen rich gas entrance 3 close to, than the angle part 10 that stretches in oxygen enrichment economizer bank 1 away from is long from oxygen rich gas entrance 3, flows through each rich-oxygen nozzle 7 and spray that to send into the regional oxygen rich gas flow of combustion flame close thereby make.Installation with oxygen enrichment economizer bank 1 in the combustion furnace of rich-oxygen nozzle 7, do not change the structure of former burner 6, only need the fuel nozzle 4 in former burner 6 is shifted to burner front end face 8 certain distances of burner 6, the combustion flame overwhelming majority is exposed on burner front end face 8, thereby the oxygen rich gas that rich-oxygen nozzle 7 is sprayed accurately enters into the combustion flame zone, realizes that the local oxygen enriching jet-flow efficient concentrates combustion-supporting.
Claims (5)
1. with oxygen enrichment preheating device in the combustion furnace of rich-oxygen nozzle, comprise and be looped around combustion furnace inner burner (6) tubular type rich-oxygen preheater on every side and the little angle of flare rich-oxygen nozzle (7) that totally is symmetrically distributed in burner (6) periphery that is connected on the tubular type rich-oxygen preheater, it is characterized in that: resistant to elevated temperatures tubular type rich-oxygen preheater is arranged on the interior burner (6) of combustion furnace on every side, and be attached to or partly be embedded in the heat-insulation layer of burner (6) surrounding, the oxygen rich gas preheating is drawn the heat of burner (6) surrounding furnace bottom or furnace wall and is not affected heat radiation distribution in combustion furnace thermal radiation effect and combustion furnace, be welded with the symmetrical rich-oxygen nozzle pipe (2) of two or several and burner (6) in stove on oxygen enrichment economizer bank (1), rich-oxygen nozzle (7) is connected on rich-oxygen nozzle pipe (2), rich-oxygen nozzle pipe (2) has a back of the body towards the angle (9 of airflow direction, 10), stretch in the oxygen enrichment economizer bank (1) of tubular type rich-oxygen preheater, directly enter rich-oxygen nozzle pipe (2) with the gas that flows in the oxygen enrichment economizer bank (1) that is blocked in the tubular type rich-oxygen preheater, and from tubular type rich-oxygen preheater oxygen rich gas entrance the rich-oxygen nozzle pipe (2) close to more, its angle part that stretches in the oxygen enrichment economizer bank (1) of tubular type rich-oxygen preheater is longer, thereby it is close to guarantee that the oxygen rich air physical efficiency of flowing through away from the rich-oxygen nozzle (7) of oxygen rich gas entrance on the tubular type rich-oxygen preheater and other enter from oxygen rich gas oxygen rich gas flow and pressure that the different rich-oxygen nozzle (7) of each distance of tubular type rich-oxygen preheater entrance flows through.
2. as claimed in claim 1 with oxygen enrichment preheating device in the combustion furnace of rich-oxygen nozzle, it is characterized in that: rich-oxygen nozzle (7) directly is welded on the tubular type rich-oxygen preheater, and by burner (6) and flame totally be symmetrically distributed in combustion furnace inner burner (6) around, the concrete middle fuel nozzle (4) of burner (6) of pressing, the heat radiation distribution occasion calculates and adds experience and determine in combustion flame and structure in the stove and stove: the quantity of rich-oxygen nozzle (7) and be welded in position and the angle on the tubular type rich-oxygen preheater in stove, relative position and the angle of fuel nozzle (4) in rich-oxygen nozzle (7) and burner (6).
3. oxygen enrichment preheating device in the combustion furnace with rich-oxygen nozzle as claimed in claim 2 is characterized in that: outside jet angle, the length of flame, combustion position, fuel nozzle (4) mouthful size, rare denseness of fuel, the jet velocity of oxygen rich gas and the type of little angle of flare rich-oxygen nozzle (7) in quantity, distribution and relative combustion device (6) axis of each fuel nozzle (4) in the speed that relative position and the angle of rich-oxygen nozzle (7) and combustion flame also depends on fuel nozzle (4) burner oil in burner (6), burner (6); In combustion furnace, for hot oxygen rich gas being injected directly on the position of the slightly inclined to one side fuel nozzle (4) in combustion flame centre, rich-oxygen nozzle (7) is 10o ~ 90o with the angle of burner (6) axis to rich-oxygen nozzle (7) with the position of combustion flame.
4. as claimed in claim 1 or 2 with oxygen enrichment preheating device in the combustion furnace of rich-oxygen nozzle, it is characterized in that: if a plurality of compact burners (6) of relatively concentrating are arranged in combustion furnace, rich-oxygen preheater in stove is designed to arrange around a plurality of burners (6), the position of rich-oxygen nozzle (7) is according to the combustion flame condition, and design is overall symmetrical or mal-distribution overall according to the burner block structural condition around a plurality of burners (6).
5. as claimed in claim 1 or 2 with oxygen enrichment preheating device in the combustion furnace of rich-oxygen nozzle, it is characterized in that: rich-oxygen nozzle (7) totally is symmetrically distributed in burner (6) main points on every side by burner (6) and flame and is: determine as the case may be, and symmetrical or relatively several or all burners (6) are totally symmetrical on every side at each burner (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105151118A CN102261669B (en) | 2010-10-22 | 2010-10-22 | Oxygen enrichment preheating device with oxygen enrichment nozzles in combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105151118A CN102261669B (en) | 2010-10-22 | 2010-10-22 | Oxygen enrichment preheating device with oxygen enrichment nozzles in combustion furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102261669A CN102261669A (en) | 2011-11-30 |
| CN102261669B true CN102261669B (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105151118A Expired - Fee Related CN102261669B (en) | 2010-10-22 | 2010-10-22 | Oxygen enrichment preheating device with oxygen enrichment nozzles in combustion furnace |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB176929A (en) * | 1921-01-04 | 1922-03-23 | Champion Kerosene Burner Co | Improvements in kerosene burning apparatus |
| GB659286A (en) * | 1949-04-04 | 1951-10-17 | Kenderi Tibor | Improvements in vaporizing burners of the nozzle type for liquid fuels |
| CN2320619Y (en) * | 1997-11-27 | 1999-05-26 | 时战胜 | Multi-grate products channel and secondary air-distributing device of rotary internal heated activation furnace |
| JP2001263608A (en) * | 2000-03-22 | 2001-09-26 | Nippon Sanso Corp | Burner for oxygen-enriched liquid fuel |
| CN2492560Y (en) * | 2001-05-21 | 2002-05-22 | 于志贤 | Energy-saving gas producer |
| CN100473901C (en) * | 2007-04-25 | 2009-04-01 | 郑州豫兴耐火材料有限公司 | Ceramic burner with round arrangement vertical upward nozzle |
| CN201184604Y (en) * | 2008-02-20 | 2009-01-21 | 山东鲁能节能设备开发有限公司 | Boiler oxygen-enriched combustion-supporting apparatus |
| CN201462855U (en) * | 2009-07-07 | 2010-05-12 | 丁红才 | Garbage harmless burning and processing device |
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2010
- 2010-10-22 CN CN2010105151118A patent/CN102261669B/en not_active Expired - Fee Related
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| CN102261669A (en) | 2011-11-30 |
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Effective date of registration: 20181120 Address after: 242200 Peng Guangde Road, Guangde Economic Development Zone, Xuancheng, Anhui Patentee after: Guangde Hong Xia development in science and technology Co., Ltd Address before: 314408 304, room 2, 30 shallow water bay, Kashi street, Haining, Jiaxing, Zhejiang. Patentee before: Wei Boqing |
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Granted publication date: 20130619 Termination date: 20191022 |
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