CN1417106A - Burning nozzle with inner distributor and three jets for oxidizing natural gas partially to produce synthetic gas - Google Patents
Burning nozzle with inner distributor and three jets for oxidizing natural gas partially to produce synthetic gas Download PDFInfo
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- CN1417106A CN1417106A CN 02151143 CN02151143A CN1417106A CN 1417106 A CN1417106 A CN 1417106A CN 02151143 CN02151143 CN 02151143 CN 02151143 A CN02151143 A CN 02151143A CN 1417106 A CN1417106 A CN 1417106A
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- shower nozzle
- burner
- interior
- sparger
- natural gas
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Abstract
The burner consists of central nozzle, inner ring-gap nozzle, outer ring nozzle, inner distributor and cooling system assembled together. The gasifying agent entering via the central duct is passed through the channel comprising vertical holes in the inner distributor and central nozzle before being speed increased and sprayed via the ring-gap nozzle; partial natural gas entering via the outer duct is passed through the inclined holes in the inner distributor and sprayed via the central nozzle after being speed increased; and the other natural gas entering via the outer duct is passed through the channel formed by the inner ring-gap nozzle and the outer ring nozzle and sprayed via the outer ring nozzle after being speed increased. Owing to the gasifying agent flow between two natural gas flows, the present invented burner has advantages of fast and homogeneous mixing.
Description
Technical field
The present invention relates to a kind of Sweet natural gas is raw material, the burner of portion oxidation synthesis gas (CO+H2).
Background technology
The raw material of partial oxidation process preparing synthetic gas is generally residual oil or coal water slurry, but along with the rise of global crude oil price and the development of residual oil deep process technology, supply falls short of demand for residual oil, price goes up thereupon, with residual oil is the also increase thereupon of production synthetic gas (being used for the production of synthetic ammonia, methyl alcohol, acetic acid) cost of raw material, and the adjustment of raw material route is imperative.The foundation of the discovery of the western big reserves natural-gas field of China and transfering natural gas from the west to the east pipe network makes the residual oil raw material synthesis ammonia plant in the radiation radius objectively possess the possibility that changes the burning Sweet natural gas.Its key is to change former residual oil burner into the Sweet natural gas burner.For this reason, Texaco company once provided a kind of Sweet natural gas burner of two spouts for the transformation of domestic certain factory, but practice shows that there is following problem in this burner:
(1) vapourizing furnace top intensity of combustion is big, causes the furnace roof overtemperature, influences the life-span of vapourizing furnace;
(2) methane (CH
4) transformation efficiency is lower, CH in the vapourizing furnace exit gas
4＞1.0%, cause former
Material gas utilization rate descends, and the processing of follow-up workshop section is made troubles.
In view of the above-mentioned shortcoming of prior art, factory wishes that urgently researcher makes improvement to existing preparing synthetic gas by natural gas partial oxidation burner, provides a kind of performance more excellent preparing synthetic gas by natural gas partial oxidation burner.
The objective of the invention is to overcome the shortcoming of prior art, the contriver has designed the preparing synthetic gas by natural gas partial oxidation burner of three spouts of sparger in a kind of having, it is good that it has a mixed performance, conversion of natural gas rate height, advantages such as vapourizing furnace top intensity of combustion is moderate can satisfy the requirement of relevant producer to the Sweet natural gas burner.
Summary of the invention
Design of the present invention is such, and the contriver finds that the quality of preparing synthetic gas by natural gas partial oxidation technology depends primarily on the structural performance of burner on the basis of being engaged in gasification technology research for a long time, and the Field Characteristics of burner and the formation of body of heater coupling.
The gas by partial oxidation of natural process is carried out under high temperature (1200～1450 ℃) usually, chemical reaction velocity is exceedingly fast, whole gasification is a mixture control, and mixing process is determined by the characteristic of burner fully, in other words, burner mixed performance good and bad and determined the effect of natural gas gasifying process with the Field Characteristics that the body of heater coupling forms.
The present invention is by placing the interior sparger of burner inside, automatically Sweet natural gas is divided into two strands, one walks burner center shower nozzle, another thigh is walked burner outer shroud shower nozzle, oxygen is then walked interior annular space shower nozzle between burner center shower nozzle and the outer shroud shower nozzle by the circular hole of sparger, and to burner shower nozzle angle of throat improvement (reducing), the setting of burner head outside cooling coil, these improvement of burner, produced significant technique effect: (1) has improved the mixed effect of Sweet natural gas and oxygen greatly, improved the utilization ratio of Sweet natural gas, reduce vapourizing furnace outlet methane content, improved the productive rate of effective gas (CO+H2).(2) avoid local peroxide, reduced the intensity of combustion on vapourizing furnace top, prevented the furnace roof overtemperature.(3) help prolonging the burner life-span.
The present invention realizes like this, the contriver has designed a kind of three spout preparing synthetic gas by natural gas partial oxidation burners with interior sparger according to above-mentioned design, by interior sparger, the center shower nozzle, interior annular space shower nozzle and outer shroud shower nozzle are formed concentric three spout burners, annular space shower nozzle in vaporized chemical (oxygen) is entered by the straight hole on the interior sparger by the burner centre pipe, after Sweet natural gas enters the burner outer catheter, then be divided into two strands, one directly advances burner outer shroud shower nozzle, and another strand then enters burner center shower nozzle by the inclined hole of sparger.
In being meant, said centre pipe is connected, outward the burner internal flow space that is connected with oxygen pipeline with sparger; Outer catheter is burner is connected, walks Sweet natural gas with natural gas line space.
The top of centre pipe is an elbow, is connected with the vaporized chemical pipeline by the flange on the elbow, and the elbow below is provided with joint flange, and nationality helps it to make centre pipe match affixed with the top flange of outer catheter.
Outer catheter and outer shroud shower nozzle are by affixed again after the mechanical engagement; The outer catheter top is provided with joint flange, and nationality helps it to match affixed with joint flange on the centre pipe; Outer catheter top is provided with raw material (Sweet natural gas) inlet tube, is connected with natural gas line by flange; The outer catheter bottom is provided with joint flange, and nationality helps the flange Joint on it and the vapourizing furnace shell.
Sparger places burner inside in said, plays the natural gas distribution effect, and it is processed by forging, go up with the burner centre pipe by affixed after the mechanical engagement, under pass through after the mechanical engagement affixed with center shower nozzle and interior annular space shower nozzle respectively.Have upright opening on the sparger, vaporized chemical (oxygen) is the annular space shower nozzle in the burner centre pipe is entered by upright opening; Also have inclined hole on the sparger, one natural gas via burner outer catheter enters the center shower nozzle by inclined hole.
The interior contraction half-angle α of center shower nozzle is 10 °～45 °, and its outside angle of inclination beta is 30 °～80 °; The interior contraction half-angle γ of interior annular space shower nozzle is 30 °～80 °; The outer side rake angle τ of center shower nozzle is 30 °～80 °; The interior contraction half-angle ε of outer shroud shower nozzle is 10 °～45 °.
The concentricity of center shower nozzle and interior annular space shower nozzle guarantees by interior sparger, the concentricity of they and outer shroud shower nozzle is then guaranteed by the accurately machined flange of being located at the sparger outside, be that nationality helps the outside camber line of flange to match with the cylinder of outer shroud shower nozzle inboard, keep concentricity.
In order to protect burner, in burner head arranged outside cooling room, outside the arranged outside of ring spray head cooling coil, cooling fluid (being generally water) imports cooling room by inlet tube, behind coiled pipe, is discharged by outlet pipe.
Said center shower nozzle, interior annular space shower nozzle, outer shroud shower nozzle, cooling room, cooling coil, interior sparger, its material can be stainless steel, also can be resistant to elevated temperatures Inconel 600; The inside and outside conduit of burner generally should be used stainless material.
Said vaporized chemical can be an air or oxygen content greater than 21% oxygen-rich air or oxygen content greater than 98% pure oxygen, decides according to concrete processing requirement.
Burner of the present invention can be the raw material preparing synthetic gas with Sweet natural gas not only, also can come preparing synthetic gas with petroleum naphtha, diesel oil, heavy oil, residual oil, pitch and other hydrocarbon polymer or combustible material.
Vaporized chemical is 10～300m/s in the speed of spout, and to gas, its speed at spout is 10～300m/s, and to liquid starting material, its its be 0.1～20m/s in the speed of spout; The ratio of carbon amount is 0.5～1.6Nm3/kg in oxygen and the raw material (comprising Sweet natural gas and other liquid starting material).
Its working pressure of said burner is 0.5～12MPa.
Description of drawings
Further illustrate content of the present invention below in conjunction with accompanying drawing:
Fig. 1 is the profile front view of three spout Sweet natural gas burners of sparger in having.
Fig. 2 is the sectional view of the A-A part of three spout Sweet natural gas burners of sparger in having.
Wherein:
1---three spout Sweet natural gas burners mainly by center shower nozzle, interior annular space shower nozzle, outer shroud shower nozzle and in
Sparger combines;
2---cooling system, it is mainly by cooling room 23, cooling fluid inlet tube 3, coolant outlet
5 and coiled pipe 4 constitute;
3---the cooling fluid inlet tube, its end communicates with cooling room 23;
4---coiled pipe, it is around in the outside of burner, and an end communicates with cooling room 23, the other end and cold
But liquid outlet pipe 5 links to each other;
5---coolant outlet, it links to each other with coiled pipe 4;
6---the flange Joint on the joint flange, it and vapourizing furnace;
7---feed(raw material)inlet, raw material enter burner outer catheter 12 thus;
8---gasification agent inlet, vaporized chemical enter burner centre pipe 11 thus;
9---joint flange;
10---joint flange;
11---the burner centre pipe;
12---the burner outer catheter;
13---joint flange;
14---joint flange;
15---centre channel, the vaporized chemical passage that forms by burner centre pipe 11;
16---exterior passage way, the Sweet natural gas passage that forms by burner outer catheter 12 and centre pipe 11;
17---interior sparger, the upper end is matched affixed with centre pipe 11, lower end and center shower nozzle 22
With interior annular space shower nozzle 21 Joints, guarantee simultaneously between center shower nozzle and the interior annular space shower nozzle
Concentricity;
18---interior sparger straight hole communicates with interior annular space spout 21a with centre channel 15;
19---interior sparger inclined hole communicates with exterior passage way 16 and center nozzle 20a;
20---the center shower nozzle, the upper end is matched affixed with interior sparger;
20a---center nozzle;
21---interior annular space shower nozzle, the upper end is matched affixed with interior sparger;
21a---interior annular space spout;
22---the outer shroud shower nozzle, the upper end is matched affixed with outer catheter 12;
22a---outer annular-jet;
23---cooling room, it is positioned at outer shroud shower nozzle outboard end, is the outer side 24 by the outer shroud shower nozzle,
The annular space that excessively flange 25, and end face 27 is constituted is respectively equipped with cold on it
But liquid import 26 and corresponding outlet (, not marking among the figure) with 26 symmetries, and pass through
Cooling fluid inlet tube 3 on it and annular coiled pipe 4 advancing of direct coolant respectively is set
Go out;
24---outer shroud shower nozzle outer side;
25---excessive flange, it is fixed on the outer shroud shower nozzle outer side;
26---cooling fluid is imported and exported, be arranged on the excessive flange 25, wherein the other end of water-in with
Cooling fluid inlet tube 3 is connected, and the other end of water outlet is connected with coiled pipe 4;
27---end face is fixed on the outer shroud shower nozzle 22;
28---flange, the sparger outside guaranteed outer shroud shower nozzle 22 and interior ring by it in it was arranged on
Concentricity between the crack shower nozzle 21;
The interior angle of throat of α---center shower nozzle;
β---the inclination angle in the center shower nozzle outside;
The interior contraction half-angle of γ---interior annular space shower nozzle;
τ---the inclination angle in the interior annular space shower nozzle outside;
The interior contraction half-angle of ε---outer shroud shower nozzle.
Vaporized chemical enters centre channel 15 by inlet tube 8, and annular space shower nozzle 21 and the passage that center shower nozzle 20 forms are sprayed by interior annular space spout 21a after the speedup in entering by the upright opening 18 on the interior sparger 17; Sweet natural gas enters exterior passage way 16 by inlet tube 7, and one enters in the center shower nozzle 20 by the inclined hole 19 on the interior sparger 17, is sprayed by center nozzle 20a after the speedup; Annular space shower nozzle 21 and the passage that outer shroud shower nozzle 22 forms were sprayed by outer annular-jet 22a after the speedup in another strand directly entered.Vaporized chemical acutely mixes at the spout place with Sweet natural gas, at high temperature carries out partial oxidation reaction, i.e. gasification reaction simultaneously.
The major function of interior sparger 17 is that a part of Sweet natural gas in the burner exterior passage way is imported burner center shower nozzle, forms the situation of two strands of Sweet natural gas therebetween vaporized chemicals, thereby enhancing mixed improves the conversion of natural gas rate.
The interior contraction half-angle α of center shower nozzle is 10 °～45 °, and its outside angle of inclination beta is 30 °～80 °; The interior contraction half-angle γ of interior annular space shower nozzle is 10 °～45 °; The outer side rake angle τ of center shower nozzle is 30 °～80 °; The interior contraction half-angle ε of outer shroud shower nozzle is 10 °～45 °.
External cooling fluid enters in the cooling room 23 through inlet tube 3, and then is discharged by outlet pipe 5 through coiled pipe 4.Cooling by cooling fluid in cooling room, the coiled pipe can be protected burner effectively, improves the work-ing life of burner.
According to the content that design of the present invention and accompanying drawing are showed, the three spout preparing synthetic gas by natural gas partial oxidation burners of making that have interior sparger have following technique effect through trying out:
When natural pneumatolytic is divided into CH
495.15 (vol%), C
2H
60.91 (vol%), C
3H
80.14 (vol%), CO
23.80 (vol%), during S 20ppm, the pure oxygen with 98% is a vaporized chemical, and the gasification result: main ingredient is CO+H in the synthetic gas
2(vol%) 92.85%, improve 1 percentage point at least than existing burner, the CH of remnants in the synthetic gas
4Than prior art obvious decline is arranged.
In a word, burner of the present invention has kept existing burner overall dimensions constant when designing, and helps existing factory like this and changes use (needn't change matched tube structure), has overcome the shortcoming of its existence again, has promptly improved conversion of natural gas rate and effective gas (CO+H
2) productive rate, reduced the intensity of combustion on vapourizing furnace top, increase the degree of safety and the work-ing life of vapourizing furnace, thereby significantly advanced the technical progress of existing full scale plant.
Claims (7)
- One kind have in three spout preparing synthetic gas by natural gas partial oxidation burners of sparger, it is characterized in that: said burner is by center shower nozzle, interior annular space shower nozzle, outer shroud shower nozzle, and the concentric three spout burners that combine of interior sparger, all component of cooling system, whereinSaid center shower nozzle 20, it and interior sparger 17 are by Joint after the mechanical engagement, and it communicates with burner outer catheter 12 by equally distributed inclined hole 19 on the interior sparger; The interior contraction half-angle α of center shower nozzle 20 is 10 °～45 °, and its outside angle of inclination beta is 30 °～80 °; The center shower nozzle is by the concentricity of interior sparger 17 maintenances with interior annular space shower nozzle 21;Annular space shower nozzle 21 in said, it and interior sparger 17 are by Joint after the mechanical engagement, and it communicates with the burner centre pipe by equally distributed upright opening 18 on the interior sparger; Be provided with joint flange 10 on the top of centre pipe 11, match affixed by it with coupling flange 9 on the outer catheter, be provided with gasification agent inlet pipe 8 on the top of centre pipe, above inlet tube 8, also be provided with joint flange 14, be connected with the vaporized chemical pipeline by it; The interior contraction half-angle γ of interior annular space shower nozzle 29 is 10 °～45 °; The outer side rake angle τ of center shower nozzle 28 is that τ is 30 °～80 °; Interior annular space shower nozzle 21 is by the concentricity of interior sparger 17 maintenances with center shower nozzle 20;Said outer shroud shower nozzle, it and outer catheter 12 are by Joint after the mechanical engagement; Be provided with coupling flange 9 on the top of outer shroud conduit 12, match affixed by it with coupling flange 10 on the centre pipe, be provided with fuel inlet pipe 7 on the top of outer shroud conduit 12, below inlet tube 7, also be provided with joint flange 6, by the flange Joint on it and the vapourizing furnace shell; The interior contraction half-angle ε of outer shroud shower nozzle is 10 °～45 °;Sparger 17 places burner inside in said, plays the natural gas distribution effect, and it is processed by forging, go up with burner centre pipe 11 by affixed after the mechanical engagement, under pass through after the mechanical engagement affixed with center shower nozzle 20 and interior annular space shower nozzle 21 respectively; Have upright opening 18 on the sparger, vaporized chemical is in centre channel 15 is entered by upright opening 18 in the annular space shower nozzle 21; Also have inclined hole 19 on the sparger, one natural gas via exterior passage way 16 is entered in the center shower nozzle 20 by inclined hole 19; The sparger outside is provided with flange 28, by the concentricity between its maintenance outer shroud shower nozzle 22 and the interior annular space shower nozzle 21;Said cooling system 2 mainly is made of cooling room 23 and coiled pipe 4, and cooling fluid enters cooling room 23 by inlet tube 3, is discharged by outlet pipe 5 behind coiled pipe 4 again; Cooling room 23 is arranged at the outside of burner spout end, and respectively by outer side 24, transition flange 25, the becate pipe 26 of outer shroud shower nozzle, and end face 27 formed spaces are formed; Coiled pipe 4 is arranged on the outside of burner Lower Half; Said cooling fluid is generally water, also can be other safe liquid.
- 2. burner as claimed in claim 1 is characterized in that: said vaporized chemical is air, oxygen level greater than 21% oxygen-rich air or oxygen level greater than 98% pure oxygen.
- 3. as the described burner in one of claim 1 or 2, it is characterized in that: the flow velocity of vaporized chemical is 10～300m/s, and the Sweet natural gas flow velocity is 10～300m/s.
- 4. as the described burner of one of claim 1～3, it is characterized in that: the ratio of the carbon in the oxygen in the vaporized chemical and the fuel is 0.50～1.60Nm3/kg.
- 5. as the described burner of one of claim 1～4, it is characterized in that: the suitable pressure of gasification burner tip is 0.5～12.0MPa.
- 6. burner as claimed in claim 1, it is characterized in that: this burner is applicable to that also with petroleum naphtha, diesel oil, heavy oil, residual oil, pitch and other hydrocarbon polymer or combustible material be that raw material is produced synthetic gas, when using liquid starting material, raw material flow rate is 0.1～20m/s.
- One kind have in the preparing synthetic gas by natural gas partial oxidation burner of sparger, it is characterized in that: this burner also is applicable to the production of reducing gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021511438A CN1189385C (en) | 2002-12-06 | 2002-12-06 | Burning nozzle with inner distributor and three jets for oxidizing natural gas partially to produce synthetic gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021511438A CN1189385C (en) | 2002-12-06 | 2002-12-06 | Burning nozzle with inner distributor and three jets for oxidizing natural gas partially to produce synthetic gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417106A true CN1417106A (en) | 2003-05-14 |
| CN1189385C CN1189385C (en) | 2005-02-16 |
Family
ID=4751929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021511438A Expired - Lifetime CN1189385C (en) | 2002-12-06 | 2002-12-06 | Burning nozzle with inner distributor and three jets for oxidizing natural gas partially to produce synthetic gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1189385C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650031B (en) * | 2009-09-18 | 2011-04-13 | 兖矿集团有限公司 | Start-up compound burner for water-coal-slurry or coal dust gasification furnace |
| CN102275872A (en) * | 2011-05-26 | 2011-12-14 | 上海国际化建工程咨询公司 | Novel burner for preparing syngas by non-catalytic partial oxidation |
| CN102829477A (en) * | 2012-09-24 | 2012-12-19 | 济南同智创新科技有限公司 | Nozzle of hydrogen production reforming furnace |
| CN105271115A (en) * | 2015-11-25 | 2016-01-27 | 华东理工大学 | Gaseous hydrocarbon reformer nozzle |
| CN108212575A (en) * | 2017-12-29 | 2018-06-29 | 山东大学 | A kind of supercritical fluid prepares the external adjustable radial extension annular space combination nozzle of nano and micro materials |
-
2002
- 2002-12-06 CN CNB021511438A patent/CN1189385C/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650031B (en) * | 2009-09-18 | 2011-04-13 | 兖矿集团有限公司 | Start-up compound burner for water-coal-slurry or coal dust gasification furnace |
| CN102275872A (en) * | 2011-05-26 | 2011-12-14 | 上海国际化建工程咨询公司 | Novel burner for preparing syngas by non-catalytic partial oxidation |
| CN102275872B (en) * | 2011-05-26 | 2012-12-19 | 上海国际化建工程咨询公司 | Novel burner for preparing syngas by non-catalytic partial oxidation |
| CN102829477A (en) * | 2012-09-24 | 2012-12-19 | 济南同智创新科技有限公司 | Nozzle of hydrogen production reforming furnace |
| CN105271115A (en) * | 2015-11-25 | 2016-01-27 | 华东理工大学 | Gaseous hydrocarbon reformer nozzle |
| CN108212575A (en) * | 2017-12-29 | 2018-06-29 | 山东大学 | A kind of supercritical fluid prepares the external adjustable radial extension annular space combination nozzle of nano and micro materials |
| CN108212575B (en) * | 2017-12-29 | 2020-09-08 | 山东大学 | External adjustable radial expansion annular gap combined nozzle for preparing nano-micron material by supercritical fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1189385C (en) | 2005-02-16 |
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Granted publication date: 20050216 |