CN103333717B - Process burner structure of gasification furnace - Google Patents
Process burner structure of gasification furnace Download PDFInfo
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- CN103333717B CN103333717B CN201310238036.9A CN201310238036A CN103333717B CN 103333717 B CN103333717 B CN 103333717B CN 201310238036 A CN201310238036 A CN 201310238036A CN 103333717 B CN103333717 B CN 103333717B
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Abstract
The invention relates to a process burner structure of a gasification furnace. The process burner structure comprises a burner body, wherein a plurality of material channels and cooling water cavities are orderly arranged on the body from inside to outside. The process burner structure is characterized in that a thermal insulating layer, which is matched with the front end face of the burner, and of which the refractoriness is greater than or equal to 1770 DEG C, is arranged at the front end face of the burner; the thermal insulating layer is parallel to the front end face of the burner and connected with the front end face of the burner through a plurality of slag nails which are arranged at intervals. Compared with the prior art, conventional ideas of prolonging the service life of the burner in the field and providing the operating cycle are avoided; the density of heat flow through the front end face of the burner body is greatly reduced by providing the thermal insulating layer to prevent high-temperature radiation inside the gasification furnace. Thus, thermal stress caused by temperature gradient near the front end face is greatly reduced; meanwhile, the temperature of the front end face of the burner can be reduced; the allowable stress of the burner is increased; the operating cycle of the process burner of the gasification furnace is effectively prolonged.
Description
Technical field
The present invention relates to gasification furnace structure, specifically refer to a kind of vapourizing furnace process burner structure.
Background technology
Burner is one of key part of vapourizing furnace, its Main Function is that fuel and vaporized chemical are imported vapourizing furnace with certain speed, under the dynamic action of the vaporized chemical of high-velocity jet, after realizing fully the mixing of fuel and vaporized chemical, there is unburnt chemical reaction.Because the working temperature in vapourizing furnace is usually above 1400 DEG C, and under being in the environment of pressurization, therefore very high to the requirement of burner, if nozzle structure design is improper, fuel will be caused and vaporized chemical mixed effect is poor, burner end cool not enough, thermal stresses is too high, affect vapourizing furnace time serious and normally run.
In order to increase the cycle of operation of burner, avoid burner to crack under stress, people have done a large amount of R&D works.
Such as, the patent No. is CN200610030864.3, CN201120103388.X, CN200920070813.2, CN00121897.2 and CN200610030864.3, notification number is all performances by improving burner material for the technical scheme disclosed in CN102278753A and improves cooling performance, reduce the temperature in front end of burner face, make it to drop in material tolerance band.All there is the allowable value of pressure containing part material problem on the low side in these schemes, thus cause adopting mostly be high performance material, and ignore the thermal stresses that region, front end of burner face causes due to high heat flux.
Notification number is by front end of burner face place water spray for the technical scheme disclosed in CN101956982A, utilizes the vaporization zone of water to walk heat to keep the lesser temps in burner region.But this scheme will ensure that burner long-term operation exists larger uncertainty, subject matter is the air-flow near burner is not static, the heat absorption although the water sprayed into can gasify, but not merely inhale the heat in burner region, after spraying into water in addition, the gas composition entering vapourizing furnace is also had a certain impact, especially in micro through-hole situation, there is larger thermograde.
The patent No. for CN201020534852.6 and notification number be the technical scheme disclosed in CN101956982A, all adopting is sprayed water by aperture absorbs heat, there are the problems referred to above equally, and due to the heat flow density of the spiral coil cooling tube additionally introduced itself very large, also exist and cause thermal stresses excessive because thermograde is excessive and occur losing efficacy, make spiral coil cooling tube also become a main accident source.
Summary of the invention
Technical problem to be solved by this invention provides a kind of vapourizing furnace process burner structure that effectively can extend high temperature height radiation condition lower work-ing life and the cycle of operation for the present situation of prior art.
The present invention solves the problems of the technologies described above adopted technical scheme: this vapourizing furnace process burner structure, comprise burner body, described burner body is provided with multiple material channel and cooling water cavity from the inside to the outside successively, it is characterized in that the front end face of described burner is provided with the thermofin that the refractoriness suitable with the front end face of described burner is more than or equal to 1770 DEG C, this thermofin parallels with the front end face of described burner, and described thermofin connects the front end face of described burner by multiple spaced slag nail.
Described thermofin adopts aluminum oxide, magnesium oxide or silicon carbide to be prepared from.
Described slag nail selects superalloy N06600, N06230 or N06002, is prepared from by the method for bending, punching press or welding.
Described slag nail is " Y " type, and a word end of slag nail connects the front end face of described burner, and the branch end of described slag nail is embedded in described thermofin.
The screening hot ring suitable with described front end of burner face is also provided with between the front end face of described thermofin and described burner, the hot ring of this screening adopts superalloy N06600, N06230 or N06002 to be prepared from, and all has gap between the front end face of the hot ring of described screening and described burner and described thermofin; The hot ring of described screening is welded on the front end face of described burner by many spaced connection projections; Described slag nail is connected on the hot ring of described screening.
The thickness of the hot ring of described screening is 0.5-5mm, and the thickness of described thermofin is 2-20mm.
The size of the through hole of the hot ring of described screening and described thermofin and the diameter matches of outer ring material channel.
Spacing between the hot ring of described screening and described front end of burner face is 0.5-5mm.
Spacing between described thermofin and the hot ring of described screening is 0.5-5mm.
Compared with prior art, present invention obviates this area to improve burner work-ing life and the conventional thinking of its cycle of operation is provided, adopt and the thermofin of refractoriness more than 1770 DEG C is set before the front end face of burner to stop the hyperthermia radiation in vapourizing furnace, make significantly to be reduced by the heat flow density of burner body front end face, thus significantly reduce the thermal stresses caused by thermograde near front end face, and the temperature in front end of burner face can be reduced simultaneously, in a disguised form improve the use properties of material, the permissible stress of burner is increased, effectively extend the cycle of operation of vapourizing furnace process burner.Technological method of the present invention greatly can reduce the heat flow density of burner body 5 front end face 7, can solve burner preferably under vapourizing furnace high temperature height radiation condition, the damage problem of the through-wall crack that front end of burner is caused by thermal stresses.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of embodiment of the present invention assembly structure;
Fig. 2 is the longitudinal sectional view of Fig. 1;
Fig. 3 is the schematic perspective view of embodiment of the present invention decomposition texture;
Fig. 4 is the temperature profile of burner in inventive embodiments.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figure 1 to Figure 3, this vapourizing furnace process burner structure comprises burner body 1, the cooling water cavity 14 burner body 1 being followed successively by from the inside to the outside coal dust channel 11, oxygen channel 12, vapour passage 13 and being connected with external water pipe 2.
Hide hot ring 3, be arranged on the front of the front end face 15 of burner, the hot ring of this screening 3 is welded on front end of burner face by multiple spaced connected nail 4.The hot ring of screening in the present embodiment adopts the preparation of N06600 material, and hide the size of hot ring middle through-hole and the equal diameters of vapour passage 13, the thickness hiding hot ring is 2mm.Connected nail 4 adopts N06600 material to prepare, and connected nail one end is welded on and hides on hot ring, and the other end is welded on the front end face of burner body.In the present embodiment, the spacing hidden between hot ring 3 and the front end face of burner body is 2mm.
Thermofin 5, adopts carbofrax material preparation, size and the equal and opposite in direction hiding hot ring through hole of its intermediate throughholes; In the present embodiment, the thickness of thermofin 5 is 4mm, and thermofin 5 and the spacing hidden between hot ring 3 are 2mm.
Slag nail 6, has multiple, and for connecting thermofin 5 and hiding hot ring 3, the slag nail 6 in the present embodiment is " Y " shape structure.One word end of slag nail 6 is by being welded to connect on the hot ring 3 of screening, the branch end of slag nail 6 is embedded in thermofin 5, slag nail is first welded to and hides on hot ring 3, be close to again and hide the meltable die that hot ring 3 is placed and thermofin 5 matches, preparing thermofin 5 by casting, removing die finally by adding hot melt.
In the present embodiment, slag nail 6 adopts superalloy N06600 to be prepared from by being bent into Y shape.
The principle of work of this vapourizing furnace process burner structure is described below:
In general burner head cooling system, the thermal resistance of cooling water side is much smaller than furnace side (for 15 in Fig. 2), and the heat exchange of furnace side is carried out mainly through radiation.The present embodiment hides hot ring in the front end face of burner outside to be connected by connected nail, is more again stopped by the fixing certain thickness thermofin of slag nail on the hot ring of screening, avoids furnace high-temperature gas and furnace wall to the direct radiation in front end of burner face.Obtain when other condition is identical through Computational Fluid Dynamics simulation, radiation, after twice stop, reduces a greater part of by the heat density in front end of burner face.Be 1550 DEG C for in-furnace temperature, front end of burner face when do not install hide hot ring and thermofin, the temperature in front end of burner face is that under 300 DEG C of conditions, heat flow density is about: 1e6W/ ㎡; Heat flow density in the present embodiment is then down to 2.55e5W/ ㎡, and now, the medial temperature of thermofin is about 1200 DEG C, and the medial temperature hiding hot ring is about 790 DEG C, and actual temp distribution is see Fig. 4.
On the hot ring of screening, fix thermofin by slag nail in addition, the temperature hiding hot ring can be reduced, and make the surface temperature of the hot ring of screening be tending towards even, also reduce the temperature non in front end of burner face, thus reduce the tangential thermal stresses in front end of burner face.
Claims (6)
1. a vapourizing furnace process burner structure, comprise burner body, described burner body is provided with multiple material channel and cooling water cavity from the inside to the outside successively, it is characterized in that the front end face of described burner is provided with the thermofin that the refractoriness suitable with the front end face of described burner is more than or equal to 1770 DEG C, this thermofin parallels with the front end face of described burner, and described thermofin connects the front end face of described burner by multiple spaced slag nail;
The screening hot ring suitable with described front end of burner face is also provided with between the front end face of described thermofin and described burner, the hot ring of this screening adopts superalloy N06600, N06230 or N06002 to be prepared from, and all has gap between the front end face of the hot ring of described screening and described burner and described thermofin; The hot ring of described screening is welded on the front end face of described burner by many spaced connection projections; Described slag nail is connected on the hot ring of described screening;
Spacing between the hot ring of described screening and described front end of burner face is 0.5-5mm;
Spacing between described thermofin and the hot ring of described screening is 0.5-5mm.
2. vapourizing furnace process burner structure according to claim 1, is characterized in that described thermofin adopts aluminum oxide, magnesium oxide or silicon carbide to be prepared from.
3. vapourizing furnace process burner structure according to claim 1 and 2, be is characterized in that described slag nail selects superalloy N06600, N06230 or N06002, is prepared from by the method for bending, punching press or welding.
4. vapourizing furnace process burner structure according to claim 3, is characterized in that described slag nail is " Y " type, and a word end of slag nail connects the front end face of described burner, and the branch end of described slag nail is embedded in described thermofin.
5. vapourizing furnace process burner structure according to claim 1, is characterized in that the thickness of the hot ring of described screening is 0.5-5mm, and the thickness of described thermofin is 2-20mm.
6. vapourizing furnace process burner structure according to claim 5, is characterized in that the size of the through hole of the hot ring of described screening and described thermofin and the diameter matches of outer ring material channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238036.9A CN103333717B (en) | 2013-06-13 | 2013-06-13 | Process burner structure of gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310238036.9A CN103333717B (en) | 2013-06-13 | 2013-06-13 | Process burner structure of gasification furnace |
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| CN103333717A CN103333717A (en) | 2013-10-02 |
| CN103333717B true CN103333717B (en) | 2015-04-15 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368501B (en) * | 2014-09-01 | 2018-11-09 | 大唐国际化工技术研究院有限公司 | A kind of protection mechanism of process burner suitable for air-flow bed coal-gasification stove |
| CN104449864B (en) * | 2014-12-10 | 2016-09-07 | 山东兖矿国拓科技工程有限公司 | A kind of novel water-coal-slurry pressurized-gasification furnace nozzle and manufacture method thereof |
| CN105505473A (en) * | 2016-02-03 | 2016-04-20 | 陕西鑫立喷嘴研制开发有限公司 | Coal gasification process nozzle with protective cover |
| CN116064173B (en) * | 2023-02-16 | 2023-08-25 | 山东兖矿国拓科技工程股份有限公司 | Water-coal-slurry process burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073472A (en) * | 1991-12-05 | 1993-06-23 | 赫彻斯特股份公司 | Be used to produce the burner of synthetic gas |
| CN1205676A (en) * | 1995-12-18 | 1999-01-20 | 国际壳牌研究有限公司 | Process for preparing synthesis gas |
| CN1261910A (en) * | 1997-07-01 | 2000-08-02 | 德士古发展公司 | Fuel injector nozzle with protective refractory insert |
| CN101928606A (en) * | 2009-06-20 | 2010-12-29 | 林德股份公司 | Coal gasification burner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009002939A2 (en) * | 2007-06-23 | 2008-12-31 | Innexus Biotechnology International Limited | Autophilic antibodies |
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2013
- 2013-06-13 CN CN201310238036.9A patent/CN103333717B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073472A (en) * | 1991-12-05 | 1993-06-23 | 赫彻斯特股份公司 | Be used to produce the burner of synthetic gas |
| CN1205676A (en) * | 1995-12-18 | 1999-01-20 | 国际壳牌研究有限公司 | Process for preparing synthesis gas |
| CN1261910A (en) * | 1997-07-01 | 2000-08-02 | 德士古发展公司 | Fuel injector nozzle with protective refractory insert |
| CN101928606A (en) * | 2009-06-20 | 2010-12-29 | 林德股份公司 | Coal gasification burner |
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