CN201885252U - Rich-oxygen preheater provided with rich-oxygen nozzle in combustion furnace - Google Patents
Rich-oxygen preheater provided with rich-oxygen nozzle in combustion furnace Download PDFInfo
- Publication number
- CN201885252U CN201885252U CN2010205714185U CN201020571418U CN201885252U CN 201885252 U CN201885252 U CN 201885252U CN 2010205714185 U CN2010205714185 U CN 2010205714185U CN 201020571418 U CN201020571418 U CN 201020571418U CN 201885252 U CN201885252 U CN 201885252U
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- China
- Prior art keywords
- oxygen enrichment
- preheater
- oxygen
- rich
- nozzle
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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 a rich-oxygen preheater provided with a rich-oxygen nozzle in a combustion furnace, which comprises a tubular rich-oxygen preheater surrounding a combustor in the combustion furnace, and a small-spread-angle rich-oxygen nozzle connected on the tubular rich-oxygen preheater and integrally and symmetrically distributed around the combustor; and the rich-oxygen preheater is characterized in that the heat-resistant tubular rich-oxygen preheater is arranged around the combustor in the combustion furnace and attached or half-embedded in an insulating layer around the combustor, the rich-oxygen nozzle is directly welded on the tubular preheater, bevel connections of different length and opposite to the gas flow direction are arranged in rich-oxygen nozzle pipes in a connector of the rich-oxygen nozzle and the internal tubular preheater, and the bevel connections extend into the tubular preheater so as to prevent the gas flowing in the tubular preheater from directly entering the rich-oxygen nozzle connecting pipes, thus enabling the flow rate of gas passing through all the rich-oxygen nozzle pipes to be approximate.
Description
Technical field
The present invention relates to the oxygen enrichment preheater of band oxygen enrichment nozzle in the combustion furnace, 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, low-carbon economy, low-carbon (LC) living pressure become 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 the industrial production is the key that realizes low-carbon economy, protection human survival 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 the 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 transforms the high-new integrated technology that minimum (having only the oxygen enrichment nozzle to contact with body of heater with the oxygen enrichment preheater), operating parameter constant substantially (combustion air volume is turned down) also can return to former stove state at any time to body of heater simultaneously, but in implementation process, the preheating of oxygen enrichment is to bother most and invest relatively large; For the combustion furnace system that implements flue gas heat recovery, draw down heat-obtaining preheating oxygen rich gas the flue of flue gas from it, workload is big, 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 quickening 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 the interior oxygen enrichment preheater of being with the oxygen enrichment nozzle of a kind of combustion furnace safe, convenient and with low cost.
The oxygen enrichment preheater of band oxygen enrichment nozzle in the combustion furnace comprises being looped around combustion furnace inner burner tubular type oxygen enrichment preheater on every side and the little angle of flare oxygen enrichment nozzle that totally is symmetrically distributed in the burner periphery that is connected on the tubular type oxygen enrichment preheater, it is characterized in that:
1, resistant to elevated temperatures tubular type oxygen enrichment preheater is installed in around the interior burner of combustion furnace, and be attached to or partly be embedded in the heat-insulation layer around the burner, the oxygen rich gas preheating is drawn the heat of furnace bottom around the burner or furnace wall and is not influenced that heat radiation distributes in combustion furnace thermal radiation effect and the combustion furnace.
2, the oxygen enrichment nozzle directly is welded on the 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 the stove in the burner and adds experience and determine: the quantity of oxygen enrichment nozzle and be welded in the stove relative position and the angle of fuel nozzle in the position on the tubular preheater and angle, oxygen enrichment nozzle and burner.
3, in the connector of the interior tubular preheater of oxygen enrichment nozzle and stove, the oxygen enrichment blast tube has the angle of a back of the body towards airflow direction, stretch in the tubular preheater pipe, directly enter oxygen enrichment nozzle tube connector with the gas that flows in the oxygen enrichment economizer bank that is blocked in tubular preheater, and from the near more oxygen enrichment blast tube of tubular type oxygen enrichment preheater oxygen rich gas inlet, its angle part that stretches in the oxygen enrichment economizer bank of tubular type oxygen enrichment preheater is long more, thereby guarantees on the tubular type oxygen enrichment preheater away from the oxygen rich air physical efficiency of the oxygen enrichment nozzle flow warp of oxygen rich gas inlet close from oxygen rich gas flow and pressure that oxygen rich gas enters the different oxygen enrichment nozzle flow warp of each distance of tubular type oxygen enrichment preheater inlet with other.
4, the relative position of oxygen enrichment nozzle and combustion flame and angle also depend on the speed of fuel nozzle burner oil in the 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 oxygen enrichment nozzle (200920195812.0) etc. in quantity, distribution and relative combustion device axis of each fuel nozzle of burner.The position of oxygen enrichment nozzle and combustion flame is for injecting directly on hot oxygen rich gas the position of fuel nozzle slightly partially, combustion flame centre in the combustion furnace, and the angle of oxygen enrichment nozzle and burner axis is 10 degree ~ 90 degree.
5, test and facts have proved furnace bottom or the furnace wall heat-obtaining preheating oxygen rich gas thermal efficiency that not only can not reduce combustion furnace of oxygen enrichment around the burner, the temperature of combustion centre's a part flame can be improved on the contrary significantly, 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, then oxygen enrichment preheater in the stove can be designed to around a plurality of burner arrangement, the position of its oxygen enrichment nozzle can be according to conditions such as combustion flames, and design is in the overall on every side symmetrical distribution of a plurality of burners or according to the overall asymmetric distribution of burner block structural condition.
7, the oxygen enrichment nozzle by the main points that burner and flame etc. totally is symmetrically distributed in around the burner is: determine as the case may be, be symmetrically distributed around each burner or several relatively or all burners totally are symmetrically distributed.
8, can not there be dead angle or the cecum that does not have oxygen rich gas to flow in tubular type oxygen enrichment preheater, to guarantee that the oxygen enrichment preheater is not by the high temperature scaling loss in the stove.
The present invention compared with prior art has the following advantages:
1. the oxygen enrichment preheater is placed on around the burner in the stove, and directly is connected, more convenient, simple, safety are installed with the oxygen enrichment nozzle.
2. ratio is less relatively because the heat that the oxygen enrichment preheating is absorbed accounts for the burning liberated heat, and do not change the heat radiation environment in the combustion furnace again, so oxygen enrichment preheater in the stove of mounting strap oxygen enrichment nozzle can reduce the cost and the complex installation work of oxygen enrichment preheater widely.
3. can combine with burner and make standardized local oxygen enriching jet combustion supporting device, promptly utilize the present invention can be with the individual difference of complexity bigger and need strive the local oxygen enriching jet combustion supporting application integration technology that each combustion furnace is designed oxygen enrichment nozzle and installation site and angle separately 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 invention;
Fig. 2 is a middle A-A generalized section embodiment illustrated in fig. 1;
Fig. 3 is that middle oxygen enrichment blast tube angle embodiment illustrated in fig. 1 stretches into part-structure schematic diagram in the economizer bank dorsad.
Among the figure: 1, oxygen enrichment economizer bank 2, oxygen enrichment blast tube 3, oxygen rich gas inlet 4, fuel nozzle 5, fuel nozzle mouth 6, burner 7, oxygen enrichment nozzle 8, burner front end face 9, oxygen enrichment blast tube stretch into economizer bank interior angle part 10, oxygen enrichment blast tube dorsad and stretch into economizer bank interior angle part 11, oxygen rich gas flow path direction dorsad
The specific embodiment
In the embodiment shown in Fig. 1-3: in the stove oxygen enrichment economizer bank 1 be looped around combustion furnace inner burner 6 around, be attached to or partly be embedded in burner 6 heat-insulation layer all around, be welded with the oxygen enrichment blast tube 2 of two or several and burner 6 symmetrical distributions in the stove on the oxygen enrichment economizer bank 1, oxygen enrichment nozzle 7 is connected on the oxygen enrichment blast tube 2, the spout of oxygen enrichment nozzle 7 is facing to the axis of burner 6, and the angle that becomes 10 degree ~ 90 to spend with burner 6 axis, make oxygen enrichment nozzle 7 oxygen rich gas is sent to the zone of combustion flame appointment; Oxygen enrichment blast tube 2 stretches into the angle part 9 and 10 in the oxygen enrichment economizer bank 1, angle is oxygen rich gas flow path direction 11 dorsad, and from the oxygen rich gas 3 nearer angle parts 9 that stretch in the oxygen enrichment economizer bank 1 that enter the mouth, than long from the oxygen rich gas inlet 3 angle part 10 that stretches into oxygen enrichment economizer bank 1 in far away, thereby it is close to make flow through each oxygen enrichment nozzle 7 and injection send into the regional oxygen rich gas flow of combustion flame.The installation of oxygen enrichment economizer bank 1 in the combustion furnace of band oxygen enrichment nozzle 7, do not transform the structure of former burner 6, only need the fuel nozzle 4 in the former burner 6 is shifted to burner front end face 8 certain distances of burner 6, the combustion flame overwhelming majority is exposed on the burner front end face 8, thereby the oxygen rich gas that oxygen enrichment nozzle 7 is sprayed accurately enters into the combustion flame zone, realizes that the local oxygen enriching jet is efficiently concentrated combustion-supporting.
Claims (2)
1. be with the oxygen enrichment preheater of oxygen enrichment nozzle in the combustion furnace, comprise and be looped around combustion furnace inner burner (6) tubular type oxygen enrichment preheater on every side and the oxygen enrichment nozzle (7) that totally is symmetrically distributed in burner (6) periphery that is connected on the tubular type oxygen enrichment preheater, it is characterized in that: resistant to elevated temperatures tubular type oxygen enrichment preheater is installed in the interior burner (6) of combustion furnace on every side, and is attached to or partly is embedded in burner (6) heat-insulation layer all around.
2. the oxygen enrichment preheater of band oxygen enrichment nozzle in the combustion furnace as claimed in claim 1, it is characterized in that: oxygen enrichment nozzle (7) directly is welded on the tubular type oxygen enrichment preheater, and by burner (6) and flame totally be symmetrically distributed in combustion furnace inner burner (6) around.
3, the oxygen enrichment preheater of band oxygen enrichment nozzle in the combustion furnace as claimed in claim 1 or 2, it is characterized in that: in the connector of the interior tubular type oxygen enrichment preheater of oxygen enrichment nozzle (7) and stove, oxygen enrichment blast tube (2) has the angle (9 of a back of the body towards airflow direction, 10), stretch in the oxygen enrichment economizer bank (1) of tubular type oxygen enrichment preheater, directly enter oxygen enrichment nozzle (7) tube connector with the gas that flows in the oxygen enrichment economizer bank (1) that is blocked in tubular type oxygen enrichment preheater, and from the near more oxygen enrichment blast tube (2) of tubular type oxygen enrichment preheater oxygen rich gas inlet, its angle part that stretches in the tubular type oxygen enrichment preheater tube is long more.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205714185U CN201885252U (en) | 2010-10-22 | 2010-10-22 | Rich-oxygen preheater provided with rich-oxygen nozzle in combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205714185U CN201885252U (en) | 2010-10-22 | 2010-10-22 | Rich-oxygen preheater provided with rich-oxygen nozzle in combustion furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201885252U true CN201885252U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205714185U Expired - Fee Related CN201885252U (en) | 2010-10-22 | 2010-10-22 | Rich-oxygen preheater provided with rich-oxygen nozzle in combustion furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353058A (en) * | 2011-09-14 | 2012-02-15 | 魏伯卿 | Fuel oil and fuel gas oxygen rich mixed combustion nozzle for oxygen rich local oxygenation jet combustion supporting |
-
2010
- 2010-10-22 CN CN2010205714185U patent/CN201885252U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353058A (en) * | 2011-09-14 | 2012-02-15 | 魏伯卿 | Fuel oil and fuel gas oxygen rich mixed combustion nozzle for oxygen rich local oxygenation jet combustion supporting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131022 |