CN102492479B - Three-channel slurry fuel gasification burner - Google Patents
Three-channel slurry fuel gasification burner Download PDFInfo
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- CN102492479B CN102492479B CN 201110447606 CN201110447606A CN102492479B CN 102492479 B CN102492479 B CN 102492479B CN 201110447606 CN201110447606 CN 201110447606 CN 201110447606 A CN201110447606 A CN 201110447606A CN 102492479 B CN102492479 B CN 102492479B
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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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The invention discloses a three-channel slurry fuel gasification burner, which comprises an outer ring channel jet pipe, a middle ring channel jet pipe, a center channel jet pipe, an outer ring nozzle, a middle ring nozzle and a center nozzle that are coaxial. A slurry fuel enters a gasification furnace from a middle ring channel, and a gasification agent enters the gasification furnace from a center channel and an outer ring channel in two parts. The lateral sides of the center nozzle are provided with a lateral gasification agent jet orifice, along which the gasification agent can enter a middle ring channel from the center channel. The end face of the center nozzle is provided with an end face gasification agent jet orifice. At the center nozzle, the gasification agent is divided into a plurality of material flows, which are respectively jetted from the lateral gasification agent jet orifice and the end face gasification agent jet orifice of the center nozzle. The gasification agent jetted from the lateral gasification agent jet orifice contacts with the slurry fuel of the middle ring channel inside the head of the burner. And the slurry fuel also mixes with the gasification agent of the center channel and the outer ring channel at the outlet area of the burner, thus achieving a good atomization effect.
Description
Technical field
The present invention relates to the fuel slurry atomisation unit, especially a kind of three-channel slurry fuel gasification burner.
Background technology
The clean and effective utilization of the carbonaceous fuels such as coal becomes the important topic of current energy utilization gradually.The fuel gasification preparing synthetic gas can be the systems such as modern chemical industry production, combined cycle generation (being called for short the IGCC generating), ICL for Indirect Coal Liquefaction and coal hydrogen manufacturing leading technology is provided.At present, the vaporizing system synthetic gas technology of the carbonaceous fuels such as coal is divided into two classes usually, and a class is the slurry gasification technology, and another kind is dry powder solid gasification technology, and what existing domestic and international application was the widest is the slurry gasification technology.As one of key part that gasifies, the development of burner technology has directly determined operation stability and the reliability of slurry gasification technology, and the backwardness of burner technology has seriously restricted the raising of production efficiency.
Up to 1400 ℃, nozzle structure design is improper due to the vapourizing furnace interior reaction temperature, will its head of ablation, and the ablation gasification stove internal wall produces serious consequence.When burner is abundant not to the atomizing of fuel slurry, will affect the efficiency of carbon conversion of fuel, reduce synthetic gas available gas component concentration.May cause the abrasion of burner head wall surface material when the burner head design is unreasonable, affects its work-ing life.Existing patented technology such as United States Patent (USP) 4736693,4858538,4443228 and Chinese patent 89104265 etc. all to adopt core jet pipe be the burner of straight pipe type structure, common shortcoming is that material lacked accelerator before spraying into reactor, the speed of leaving burner is low, atomizing effect is not good enough, and is easy to the ablation burner.The structure of United States Patent (USP) 3743606,3705108, the employing pipe core front end reducings such as 4443230 improves logistics speed, core jet pipe outlet logistics speed improves, the burner atomizing effect is strengthened, but speed will make the abrasion of burner head accelerate after improving, and affect the work-ing life of nozzle.And for single nozzle overhead type vapourizing furnace, top jet nozzle outlet material flow velocity is crossed senior general directly affects the residence time of material in vapourizing furnace, thereby affects whole efficiency of carbon conversion.United States Patent (USP) 6228224 adopts the four-way nozzle structure, with the atomizing effect of raising burner, but so will make nozzle structure more complicated, and the processing maintenance difficulties increases.In addition; above-mentioned patent does not mostly adopt fire resistant wear prevention coating protection burner end face material at the burner section; more than reaching up to 1400 ℃ due near the temperature burner spray orifice; although adopted the end face water quench, be difficult to avoid the appearance of the bad working environments such as the ablation of nozzle head and wearing and tearing.
In sum, solving the problems such as the anti-wear and burner head of high-efficient atomizing, the burner head of fuel slurry is cooling, is the key point that improves present burner use properties.Therefore, the advanced long lifetime high-efficient atomizing gasification burner tip of exploitation is one of gordian technique approach that improves China's fuel slurry gasification technology reliability.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of not to increase burner centre channel and outer ring channel vaporized chemical flow velocity as cost, just can reach the three-channel slurry fuel gasification burner of the effect of the front premix of vaporized chemical and fuel fire.
Design of the present invention is to adopt the triple channel structure design, and centre channel jet pipe head is carried out structure design, and the raising of its spraying of ruel performance is based upon on the basis of nozzle structure design optimization, rather than pure raising jet pipe is interior or the nozzle exit material flow.So can avoid the raising of material flow and the abrasion of burner pipe wall material is increased.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of three-channel slurry fuel gasification burner, comprise coaxial outer ring channel jet pipe, middle ring passage jet pipe, centre channel jet pipe, outer shroud shower nozzle, middle ring spray head and center shower nozzle, outer shroud shower nozzle, middle ring spray head and center shower nozzle are respectively the Taper Pipe of a butt, middle ring spray headgear is in center shower nozzle outside, and the outer shroud shower nozzle is enclosed within again outside middle ring spray head; The large end of outer shroud shower nozzle is connected with nozzle outer ring channel jet pipe, and the large end of middle ring spray head is connected with the middle ring passage jet pipe of nozzle, and the large end of center shower nozzle is connected with the centre channel jet pipe of nozzle; Be provided with the gap between middle ring spray head and outer shroud shower nozzle, consist of the outer ring channel of burner, be provided with the gap between middle ring spray head and center shower nozzle, consist of the middle ring passage of burner, center shower nozzle and centre channel jet pipe consist of centre channel; Fuel slurry therefrom encircles passage and enters vapourizing furnace, and vaporized chemical divides two portions to enter vapourizing furnace from centre channel and outer ring channel; Be furnished with side vaporized chemical spray orifice on shower nozzle side, center, vaporized chemical can along side vaporized chemical spray orifice ring passage from centre channel enters, be furnished with end face vaporized chemical spray orifice on the end face of center shower nozzle.
Three-channel slurry fuel gasification burner of the present invention can make vaporized chemical divide two portions to enter burner, and a part enters from centre channel, and another part enters by outer ring channel.Fuel therefrom encircles passage and enters burner.the vaporized chemical of centre channel is divided into the multiply logistics at shower nozzle place, center, side vaporized chemical spray orifice and end face vaporized chemical spray orifice from the center shower nozzle sprays respectively, the vaporized chemical of the side vaporized chemical spray orifice ejection of center shower nozzle namely fully contacts with the fuel slurry of middle ring passage in the burner inner portion, the fuel slurry of premix is then at the vaporized chemical of burner head exit region continuation with the centre channel end face, the vaporized chemical of outer ring channel is mixed together, under the effect of centre channel multiply vaporized chemical jet premix, the outer ring channel vaporized chemical flows the shearing action of thigh in addition, combine premix fragmentation and two kinds of mechanism of pre-film atomizing, fuel slurry has reached still good atomizing effect.
The ring spray head outside is provided with cooling water jecket outside, and cooling water jecket surrounds the outer shroud shower nozzle by the burner exit end face and consists of.Cooling water jecket is connected with spiral coil cooling tube, and spiral coil cooling tube is coiled on the outer wall of outer ring channel jet pipe.The cooling water jecket of a ring spray outer setting is used for cooling outer shroud shower nozzle outside, and spiral coil cooling tube is used for cooling outer ring channel jet pipe, and cooling water jecket and spiral coil cooling tube consist of the cooling system of burner.
The burner exit end face is provided with a fire resistant wear prevention coating, and the fire resistant wear prevention coating adopts " T " font bitch to connect and is covered on the burner exit end face.The fire resistant wear prevention coating of burner exit end face can make the end face heat-conductive characteristic reduce, and reduces the temperature of burner end plane metal wall, reduces thermal stresses, has also avoided grey solid impurity particle directly to the erosion effect of burner end plane metal wall, has extended the work-ing life of burner.
Gasification burner tip of the present invention is than the remarkable advantage of prior art:
1) gasification burner tip of the present invention adopts the triple channel structure design, the coil tube type water cooling system, and the burner overall structure is simple, makes easy to maintenance.Can be used for the altogether vaporizing system synthesis gas process of the fuel slurry such as pulping of coal water slurry, oil coke slurry, residual oil, biomass class and coal, of many uses;
2) gasification burner tip of the present invention is provided with a plurality of vaporized chemical outlets at center shower nozzle end face and side, can reach the effect of the front premix of vaporized chemical and fuel fire, and to increase burner centre channel and outer ring channel vaporized chemical flow velocity as cost, do not avoided the flow at high speed solid particulate and the burner wall has been caused the shortcoming of wearing and tearing;
3) gasification burner tip of the present invention combines the characteristics of pre-membrane type burner and premixed burner, and is more abundant to the atomizing of fuel slurry, helps to improve the efficiency of carbon conversion of gasification system, thereby improves integrated gasification efficient;
4) burner of the present invention arranges the fire resistant wear prevention coating at the burner exit end face, helping to avoid the cooling water jecket end face contacts with the direct of thermal-flame, reduced the temperature of the metallic walls of burner exit cooling water jecket, reduced the burner nozzle cooling water system temperature, avoid high-speed motion ash solid impurity particle to directly the washing away of burner exit end face, extended the work-ing life of burner.
Description of drawings
Fig. 1 is the shaft section structural representation of this burner;
Fig. 2 is that the center shower nozzle lateral opening hole of this burner is arranged schematic cross-section (4 spray orifices of one deck altogether);
Fig. 3 is that schematic diagram (totally 13 spray orifices) is arranged in the center shower nozzle end face perforate of this burner.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments, but the present invention is not limited to following embodiment.
Fig. 1 ~ 3rd, the internal structure schematic diagram of three-channel slurry fuel gasification burner of the present invention.described burner comprises outer ring channel jet pipe 1, middle ring passage jet pipe 2, centre channel jet pipe 3, outer shroud shower nozzle 4, middle ring spray 5, center shower nozzle 6, outer ring channel 7, middle ring passage 8, centre channel 9, the end face vaporized chemical spray orifice 10 of center shower nozzle, the side vaporized chemical spray orifice 11 of center shower nozzle, center shower nozzle end face 12, cooling water system inlet tube 13, spiral coil cooling tube (also claiming serpentine tube) 14, holding flange 15 between outer ring channel jet pipe and middle ring passage jet pipe, the holding flange 16 that centre channel jet pipe 3 and middle ring passage jet pipe are 2, burner exit end face 17, burner outlet head cooling water jecket 18, burner outlet head cooling water jecket outlet 19, burner outlet head cooling water jecket entrance 20, burner outlet head cooling water jecket outer side wall 21, burner outlet 22, burner exit end face fire resistant wear prevention coating 23, fire resistant wear prevention coating " T " font bitch 24.
Gasification burner tip of the present invention is in order to protect burner; ring spray 4 outside spiral coil cooling tube 14 that is provided with cooling water jecket 18 and is connected with cooling room outside; cooling fluid flows into cooling water jecket 18 by inlet tube 13; discharged by cooling water jecket outlet 19 and enter spiral coil cooling tube 14, coiling burner outer nozzle outer wall 1.
Gasification burner tip outer shroud shower nozzle of the present invention, middle ring spray head and center shower nozzle are respectively the Taper Pipe of a butt, the purpose of Taper Pipe design is to allow material be raised speed at nozzle, strengthen and mix, improve atomizing effect, therefore each material spout passage has designed a suitable angular range, to reach better atomizing effect and desirable jet flow field.The interior contraction half-angle θ of gasification burner tip of the present invention center shower nozzle 6 is 15 ~ 60 °, its outer side rake angle δ is 30 ~ 75 °, the direction of side vaporized chemical spray orifice 11 and the angle τ of horizontal plane are 45 ~ 90 °, side vaporized chemical spray orifice 11 is evenly arranged along center shower nozzle 6 side circular arcs, can establish 1 ~ 3 layer, every layer of 2 ~ 8 spray orifice, opening diameter is 1 ~ 40mm; Shower nozzle 6 exit end faces in center have 1 ~ 5 hole, are evenly arranged at end face, and opening diameter is 1 ~ 40mm; The interior contraction half-angle σ of middle ring spray 5 is 0 ~ 70 °, and its outside inclination alpha is 20 ~ 90 °; The interior contraction half-angle ε of outer shroud shower nozzle 4 is 20 ~ 75 °.
The exit end face distance of the center shower nozzle 6 of gasification burner tip of the present invention and middle ring spray 5 is 0 ~ 40mm.Described middle ring spray 5 is 0 ~ 50mm with the exit end face distance of outer shroud shower nozzle 4.
Embodiment 1
If take certain 2000t/d single nozzle overhead type coal slurry gasifier as example, the interior contraction half-angle θ of gasification burner tip of the present invention center shower nozzle 6 is 30 °, its outer side rake angle δ is 60 °, the side vaporized chemical spray orifice 11 of center shower nozzle 6 is 1 layer, totally 6 holes, spray orifice direction and horizontal plane angle τ are 75 °, injection diameter 5mm; 7 of exit end face 12 perforates, injection diameter 5mm.
In gasification burner tip, the interior contraction half-angle σ of ring spray 5 is 30 °, and its outside inclination alpha is 60 °.The interior contraction half-angle ε of outer shroud shower nozzle 4 is 45 °.
The exit end face distance of the center shower nozzle 6 of gasification burner tip and middle ring spray 5 is 25mm.Middle ring spray 5 is 10mm with the exit end face distance of outer shroud shower nozzle 4.
As fuel, the oxygen take 99.8% is vaporized chemical with the coal water slurry take solid content as 61% (wt%).Vaporized chemical enters burner by centre channel 9 and outer ring channel 7 respectively, coal water slurry by middle ring passage 8 through in when ring spray 5 speedup and the oxygen pre-mixing of the side vaporized chemical spray orifice 11 of center shower nozzle 6, then the oxygen with center shower nozzle 6 front end oxygen and outer shroud shower nozzle 4 carries out entering vapourizing furnace after mixed aerosol in the exit 22 of burner, and 22 carries out the partial oxidation combustion reactions in the burner exit.Product after gasification after measured, its efficiency of carbon conversion reaches 98.5%, in synthetic gas effectively gas component (CO+H2) content be about 84% (Vol%).
Gasification burner tip of the present invention combines the advantage of pre-membrane type burner and premixed burner, improved again the shortcoming of two kinds of burners, namely extended the work-ing life of burner, atomizing effect and gasification reaction efficiency have been strengthened, improved efficiency of carbon conversion, having reduced the consumption of fuel and vaporized chemical, is a kind of advanced person's novel, high-efficiency gasification burner.
Claims (10)
1. three-channel slurry fuel gasification burner, comprise coaxial outer ring channel jet pipe (1), middle ring passage jet pipe (2), centre channel jet pipe (3), outer shroud shower nozzle (4), middle ring spray head (5) and center shower nozzle (6), described outer shroud shower nozzle (4), middle ring spray head (5) and center shower nozzle (6) are respectively the Taper Pipe of a butt, middle ring spray head (5) is enclosed within outside center shower nozzle (6), and outer shroud shower nozzle (4) is enclosed within again outside middle ring spray head (5); The large end of outer shroud shower nozzle (4) is connected with outer ring channel jet pipe (1), and the large end of middle ring spray head (5) is connected with the middle ring passage jet pipe (2) of nozzle, and the large end of center shower nozzle (6) is connected with centre channel jet pipe (3); Be provided with the gap between middle ring spray head (5) and outer shroud shower nozzle (4), consist of the outer ring channel (7) of burner, be provided with the gap between middle ring spray head (5) and center shower nozzle (6), consist of the middle ring passage (8) of burner, center shower nozzle (6) and centre channel jet pipe (3) consist of centre channel (9); Fuel slurry therefrom encircles passage (8) and enters vapourizing furnace, vaporized chemical divides two portions to enter vapourizing furnace from centre channel (9) and outer ring channel (7), fuel slurry is carried out inside and outside double team gasification, it is characterized in that, center shower nozzle (6) is furnished with side vaporized chemical spray orifice (11) on the side, vaporized chemical can along side vaporized chemical spray orifice (11) ring passage (8) from centre channel (9) enters, be furnished with end face vaporized chemical spray orifice (10) on the end face (12) of described center shower nozzle (6); The direction of described side vaporized chemical spray orifice (11) and the angle τ of horizontal plane are 45 ~ 90 °.
2. three-channel slurry fuel gasification burner according to claim 1, is characterized in that, ring spray head (4) outside is provided with cooling water jecket (18) outside, and described cooling water jecket (18) surrounds outer shroud shower nozzle (4) by burner exit end face (17) and consists of.
3. three-channel slurry fuel gasification burner according to claim 2, is characterized in that, described cooling water jecket (18) is connected with spiral coil cooling tube (14), and described spiral coil cooling tube (14) is coiled on the outer wall of outer ring channel jet pipe (1).
4. three-channel slurry fuel gasification burner according to claim 2, it is characterized in that, described burner exit end face (17) is provided with a fire resistant wear prevention coating (23), and described fire resistant wear prevention coating (23) adopts " T " font bitch (24) to connect and is covered in burner exit end face (17).
5. three-channel slurry fuel gasification burner according to claim 1, it is characterized in that, described center shower nozzle (6) is one and has the Taper Pipe that inside contracts half-angle θ and outer side rake angle δ, described middle ring spray head (5) is one and has the Taper Pipe that inside contracts half-angle σ and outside inclination alpha, and described outer shroud shower nozzle (4) is one and has the Taper Pipe that inside contracts half-angle ε.
6. three-channel slurry fuel gasification burner according to claim 5, is characterized in that, the interior contraction half-angle θ of described center shower nozzle (6) is 15 ~ 60 °, and its outer side rake angle δ is 30 ~ 75 °.
7. three-channel slurry fuel gasification burner according to claim 5, is characterized in that, the interior contraction half-angle σ of described middle ring spray head (5) is 0 ~ 70 °, and its outside inclination alpha is 20 ~ 90 °.
8. three-channel slurry fuel gasification burner according to claim 5, is characterized in that, the interior contraction half-angle ε of described outer shroud shower nozzle (4) is 20 ~ 75 °.
9. three-channel slurry fuel gasification burner according to claim 1, is characterized in that, side vaporized chemical spray orifice (11) is evenly arranged along center shower nozzle (6) side circular arc, can establish 1 ~ 3 layer, every layer of 2 ~ 8 spray orifice, and opening diameter is 1 ~ 40mm; Described end face vaporized chemical spray orifice (10) is evenly arranged 1 ~ 5 on center shower nozzle (6) exit end face, opening diameter is 1 ~ 40mm.
10. three-channel slurry fuel gasification burner according to claim 1, is characterized in that, described center shower nozzle (6) is 0 ~ 40mm with the exit end face distance of middle ring spray head (5); Described middle ring spray head (5) is 0 ~ 50mm with the exit end face distance of outer shroud shower nozzle (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110447606 CN102492479B (en) | 2011-12-28 | 2011-12-28 | Three-channel slurry fuel gasification burner |
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| CN 201110447606 CN102492479B (en) | 2011-12-28 | 2011-12-28 | Three-channel slurry fuel gasification burner |
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| CN102492479A CN102492479A (en) | 2012-06-13 |
| CN102492479B true CN102492479B (en) | 2013-06-26 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822207B (en) * | 2012-11-16 | 2017-06-06 | 航天长征化学工程股份有限公司 | Variable pressure and variable working condition oil burner |
| CN102977926B (en) | 2012-11-28 | 2014-04-16 | 华东理工大学 | Hot oxygen nozzle and application thereof in gasification furnace |
| CN103277791B (en) * | 2013-06-20 | 2015-08-19 | 山东恒远利废技术发展有限公司 | Lotion feed spray gun |
| CN103881758B (en) * | 2014-01-26 | 2015-11-25 | 西安交通大学 | A kind of narrow passage sprays the gasifying process burner of cooling |
| CN103849434A (en) * | 2014-03-13 | 2014-06-11 | 杜建吉 | Combined type coal water slurry nozzle provided with ignition device |
| 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 |
| 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 |
| CN107541293A (en) | 2016-06-23 | 2018-01-05 | 通用电气公司 | Vaporization element formed with chrome coating and the method with chrome coating protection vaporization element |
| CN108676582B (en) * | 2018-05-22 | 2020-05-26 | 哈尔滨工业大学 | Gasification agent and raw gas full-mixing burner |
| CN113522550B (en) * | 2021-08-12 | 2024-05-31 | 南京市蓝业科技有限公司 | Atomizing nozzle for producing coal water slurry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100374531C (en) * | 2005-12-29 | 2008-03-12 | 华东理工大学 | Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance |
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