CN2237640Y - Spiral flame acetylene furnace using partial combustion of natural gas - Google Patents
Spiral flame acetylene furnace using partial combustion of natural gas Download PDFInfo
- Publication number
- CN2237640Y CN2237640Y CN 95241897 CN95241897U CN2237640Y CN 2237640 Y CN2237640 Y CN 2237640Y CN 95241897 CN95241897 CN 95241897 CN 95241897 U CN95241897 U CN 95241897U CN 2237640 Y CN2237640 Y CN 2237640Y
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- natural gas
- sweet natural
- burner
- flame
- oxidation reactor
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Abstract
The utility model discloses a spiral flame acetylene furnace using the partial combustion of natural gas, belonging to a device of hydrocarbon conversion. The spiral flame acetylene furnace usingthe partial combustion of natural gas (methane) is composed of a rotational flow mixer (1), a rotational flow combined burner (2), a reaction channel (3), a quenching device (4) and a carbon scraping device (5). The utility model made of full metal materials has a rotational flow burner structure, the combustion flame is short, the oxidative pyrolysis effect is favorable, and the acetylene production rate is high.
Description
The utility model belongs to the equipment for preparing hydrocarbon from the less hydrocarbon of carbon atom quantity, is specifically related to the equipment that Sweet natural gas (methane) partial combustion prepares acetylene.
The equipment that Sweet natural gas (methane) partial combustion process prepares the acetylene most critical is the oxidative pyrolysis stove.Existing oxidative pyrolysis stove has multiple furnace type structure, and their common feature is the structure formation that adopts the direct current burner, and wherein the most representative, most widely used is the BASF partial oxidation reactor of Baden, Germany aniline alkali company.The Sweet natural gas system acetylene unit of China's Sichuan vinylon plant is exactly the BASF partial oxidation reactor of introducing.Figure-1 be the structural representation of BASF partial oxidation reactor, and it is mixing tank (a), spreading area (b), combustion zone (c), quench area (d) and scrapes several sections composition such as charcoal device.Its major technique feature is: the injection type vortex mixer is adopted in the mixing of Sweet natural gas (methane) and oxygen; The combustion of mixed gas reaction realizes by porous direct current burner plate and the regular hexagon reaction channel that is coated with flame retardant coating; The quenching of reaction cracked-stream is carried out to the center water spray by three ring-type water jet standpipes that are fixed in the reaction zone outlet; Scraping charcoal adopts the manual rotation mode of beaing to carry out.The porous direct current burner of BASF partial oxidation reactor makes the combustion flame of Sweet natural gas (methane) longer, and turbulence level is less, is unfavorable for the generation of acetylene; The aperture of direct current burner less (≯ φ 25mm), the raising of single stove ability can only depend on the increase (7500 tons/year of maximum single stove abilities, partial oxidation reactor has 127 burners, so claim multi-tube furnace) of burner quantity; Burner too much can cause coke content to increase, and not only influences acetylene yield but also bring difficulty to coke cleaning; The back-fire relief ability of direct current burner is little, causes the stove tempering easily, burns out diffuser.In addition, arrange the regular hexagon reaction channel determined, make the manufacturing difficulty of processing of stove big, and be in operation and be difficult to realize scraping the charcoal automatization by the burner air distribution hole.
The purpose of this utility model is: at the above-mentioned deficiency of BASF partial oxidation reactor, design a kind of have the eddy flow nozzle structure be convenient to again to make processing, oxidative pyrolysis effective revolve the flame partial oxidation reactor.
Below in conjunction with accompanying drawing the flame partial oxidation reactor structure of revolving of the present utility model is described.
Figure-2 is for revolving the overall structure synoptic diagram of flame partial oxidation reactor.At figure-2, the 1-cyclone mixer, 2-eddy flow combination burner device, the 3-reaction channel, 4-quenching device, 5-are scraped the charcoal device; The A-oxygen inlet, B-Sweet natural gas (methane) import, G-assists the gas import, D-reaction channel water-in, the outlet of E-reacted gas, F-scraper water-in, G-hardening head water-in, H-reaction channel water outlet, J-fire hole.
The flame partial oxidation reactor that revolves of the present utility model is an all-metal construction, by cyclone mixer (1), eddy flow combination burner device (2), reaction channel (3), quenching device (4) with scrape (5) five in charcoal device and partly form.
Figure-3 is the detail of construction of cyclone mixer (1).In figure-3, I-distributes baffle plate, II-dispensing orifice, III-Sweet natural gas wortex device, IV oxidation nozzle, V-high-speed mixing pipe, VI-diffuser; The A-oxygen catheter, B-Sweet natural gas (methane) conduit, M-mixed gas.
Preheating temperature is introduced from Sweet natural gas (methane) conduit (B) at 600～650 ℃ Sweet natural gas (methane), at the circulation section through distributing baffle plate (I) and dispensing orifice (II), make it to enter annular section after the uniformly distributing, screw out through Sweet natural gas (methane) wortex device (III) again, with introduce by oxygen catheter (A) and mix at the mixing point of high-speed mixing pipe (V) epimere through the high speed oxygen of oxygen jet (IV), mixed gas by the high-speed mixing pipe, enters burner through diffuser (VI) with ultrasonic linear speed again.Whole mixing process is picked up within the microsecond at number and is finished.
The significant parameter of cyclone mixer (1) is as follows:
High-speed mixing pipe gas flow rate: 300～800m/s
The length-to-diameter ratio of high-speed mixing pipe:＞2
The horizontal lift angle of Sweet natural gas wortex device outward turning line＞25 degree revolves line number＞2
Diffuser cone angle:＞5 degree
Figure-4 is the detail of construction of eddy flow combination burner device (2).In figure-2, C-assists the oxygen import, K-mixed gas wortex device, and oxygen hole, M-mixed gas are assisted in the L-center.
The flame partial oxidation reactor that revolves of the present utility model adopts multiple-unit family stream combination burner device (this legend is seven unit combination), presses the equilateral triangle permutation and combination, and each unit burner comprises the auxilliary oxidation hole (L) of mixed gas wortex device (K) and center.Mixed gas carries out combustion reactions through wortex device (K) the formation high speed rotating air-flow importing reaction channel of each burner, and auxiliary oxygen imports reaction channel through auxilliary oxygen hole, the center of each burner and plays stationary flame.
The significant parameter of eddy flow combination burner device (2) is as follows:
Burner diameter (d) :≤100mm;
Burner spacing:＞1.2d
The mixed gas wortex device number of blade:＞2
The horizontal lift angle of mixed gas wortex device outward turning line:＞25 degree
Mixed gas wortex device outlet swirl velocity:＞120m/s
Oxygen bore outlet direct current speed:＞5m/s is assisted at the center
The utility model revolves the reaction channel (3) of flame partial oxidation reactor, adopts all-metal round tube type water-cooling jacket structure, is provided with loop expansion pipe at the high temperature inwall, and is indeformable to guarantee under hot conditions; Be provided with fire hole and visor in the reaction channel upper end.
The significant parameter of reaction channel (3) is as follows:
Reacted gas linear speed:＞30m/s
The reacted gas residence time: 0.002～0.005 second
The quenching device (4) that revolves the flame partial oxidation reactor of the present utility model adopts the multilayer water curtain style shower nozzle in the lifting of stove central vertical, by the outside spray quenching in center.According to the needs of reaction process, automatic, the semi-automatic or manual setting reaction times.
What the utility model revolved the flame partial oxidation reactor scrapes charcoal device (5), adopts annular water-cooled lift manual, semi-automatic or scrape charcoal automatically.
The flame partial oxidation reactor that revolves of the present utility model is compared with existing BASF partial oxidation reactor, and the cyclone mixer that is adopted can prevent to catch fire in early days effectively, thereby has guaranteed the security and the stability of the operation of acetylene line.Designed multiple-unit eddy flow combination burner can produce the high speed rotating air-flow, and turbulence level is big and flame short, can improve the distribution in velocity field and temperature field in Sweet natural gas (methane) partial combustion process, creates more favourable mass-and heat-transfer condition, the acetylene yield height; Import auxilliary oxygen from eddy flow burner center, help the foundation of kindling material and stablizing of reaction flame; The swirling eddy of strong turbulence is not easy to produce tempering phenomenon in reaction channel simultaneously, thereby does not tie charcoal at burner plate face and reaction channel upper end, also makes pyrolysis pay reaction and reduces, and helps the raising of acetylene yield.In addition, the diameter of swirl nozzle is bigger than BASF partial oxidation reactor smooth-bore tip, has the potentiality that improve single stove throughput.
Embodiment (is example with the stove of producing 500 tons of acetylene per year)
| Sweet natural gas is formed: | CH 4 | C 2H 6 | CO 2 | H 2 | N 2 |
| % (volume): | 98.62 | 0.22 | 0.20 | 0.07 | 0.88 |
| Oxygen is formed: | O 2 | N 2 |
| % (volume): | 99.0 | 1.0 |
Sweet natural gas preheating temperature: 650 ℃
Combustion reaction temperature: 1450 ℃
The combustion reactions residence time: 0.0028 second
Total oxygen ratio: 0.57 test-results:
1. reacted gas is formed: (VOl.%)
| C 2H 2 | C 2H 4 | CO | CO 2 | H 2 | O 2 | N 2 | CH 4 |
| 8.4 | 0.6 | 24.8 | 3.2 | 55.6 | 0.2 | 0.8 | 6.0 |
| C 4H 4 | C 3H 4(the third) | C 3H 4(first) | C 4H 2 | C 4H 6 |
| 0.062 | 0.077 | 0.037 | 0.219 | 0.005 |
2, methane conversion: 88.9%
3, acetylene yield: 31%
4, reacted gas butt volume growth rate: 1.163
5, reacted gas wet basis rate of increase: 1.515
6, the norm quota of consumption (one ton of acetylene):
Sweet natural gas: 5615 mark rice
3
Oxygen: 3201 mark rice
3
Preheating fuel (Sweet natural gas): 450 mark rice
3
Claims (5)
1, the flame partial oxidation reactor is revolved in a kind of Sweet natural gas partial combustion, by cyclone mixer (1), eddy flow combination burner device (2), reaction channel (3), quenching device (4) with scrape (5) five in charcoal device and partly form, it is characterized in that said eddy flow combination burner device (2) be the multiple-unit burner by the equilateral triangle permutation and combination, each unit burner comprises that mixed gas wortex device (K) and center assist oxygen hole (L); Burner diameter (d)≤100mm, burner spacing＞1.2d, the mixed gas wortex device number of blade＞2, the horizontal lift angle of mixed gas wortex device outward turning line＞25 degree, mixed gas wortex device outlet swirl velocity＞120m/S, oxygen bore outlet direct current speed＞5m/s is assisted at the center.
2, revolve the flame partial oxidation reactor according to the described Sweet natural gas partial combustion of claim 1, it is characterized in that said cyclone mixer (2) has oxygen catheter (A), Sweet natural gas conduit (B), distributes baffle plate (I), dispensing orifice (II), Sweet natural gas wortex device (III), oxidation nozzle (IV), high-speed mixing pipe (V) and diffuser (VI); High-speed mixing pipe gas flow rate is 300～800m/s, the length-to-diameter ratio of high-speed mixing pipe＞2, and the horizontal lift angle of Sweet natural gas wortex device outward turning line＞25 degree revolves line number＞2, diffuser cone angle＞5 degree.
3, revolve the flame partial oxidation reactor according to the described Sweet natural gas partial combustion of claim 1, it is characterized in that said reaction channel (3) adopts all-metal round tube type water-cooling jacket structure, be provided with loop expansion pipe, be provided with fire hole and visor in the reaction channel upper end at the high humidity inwall; Reacted gas linear speed＞30m/s in the reaction channel, the reacted gas residence time is 0.002～0.005 second.
4, revolve the flame partial oxidation reactor according to the described Sweet natural gas partial combustion of claim 1, it is characterized in that said quenching device (4) adopts the multilayer water curtain style shower nozzle in the lifting of stove central vertical, spray quenching from center to periphery, automatic, the semi-automatic or manual setting reaction times.
5, revolve the flame partial oxidation reactor according to the described Sweet natural gas partial combustion of claim 1, it is characterized in that the said charcoal device (5) of scraping adopts annular water-cooled lift automatic, semi-automatic or manually scrape charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95241897 CN2237640Y (en) | 1995-07-18 | 1995-07-18 | Spiral flame acetylene furnace using partial combustion of natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95241897 CN2237640Y (en) | 1995-07-18 | 1995-07-18 | Spiral flame acetylene furnace using partial combustion of natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2237640Y true CN2237640Y (en) | 1996-10-16 |
Family
ID=33882961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95241897 Expired - Lifetime CN2237640Y (en) | 1995-07-18 | 1995-07-18 | Spiral flame acetylene furnace using partial combustion of natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2237640Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339640C (en) * | 2004-04-20 | 2007-09-26 | 中国石油化工集团公司 | Automatic carbon scraping device and method for conducting carbon scraping operation by utilizing the same |
| CN100390119C (en) * | 2006-11-16 | 2008-05-28 | 中国石油化工集团公司 | Mixing device for acetylene oven |
| CN100390118C (en) * | 2006-11-16 | 2008-05-28 | 中国石油化工集团公司 | Mixing device for acetylene oven |
| CN102977956A (en) * | 2012-11-16 | 2013-03-20 | 浙江莱德桑机械有限公司 | Production equipment and method of gas used for cutting |
| CN107261993A (en) * | 2017-07-26 | 2017-10-20 | 北京联创鼎新石化设备有限公司 | A kind of pyrolysis furnace of use gas by partial oxidation of natural legal system acetylene |
| CN109312916A (en) * | 2016-05-26 | 2019-02-05 | 沙特基础工业全球技术公司 | Pass through the acetylene production of the fractional combustion of adaptable cross-sectional area |
-
1995
- 1995-07-18 CN CN 95241897 patent/CN2237640Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339640C (en) * | 2004-04-20 | 2007-09-26 | 中国石油化工集团公司 | Automatic carbon scraping device and method for conducting carbon scraping operation by utilizing the same |
| CN100390119C (en) * | 2006-11-16 | 2008-05-28 | 中国石油化工集团公司 | Mixing device for acetylene oven |
| CN100390118C (en) * | 2006-11-16 | 2008-05-28 | 中国石油化工集团公司 | Mixing device for acetylene oven |
| CN102977956A (en) * | 2012-11-16 | 2013-03-20 | 浙江莱德桑机械有限公司 | Production equipment and method of gas used for cutting |
| CN109312916A (en) * | 2016-05-26 | 2019-02-05 | 沙特基础工业全球技术公司 | Pass through the acetylene production of the fractional combustion of adaptable cross-sectional area |
| CN107261993A (en) * | 2017-07-26 | 2017-10-20 | 北京联创鼎新石化设备有限公司 | A kind of pyrolysis furnace of use gas by partial oxidation of natural legal system acetylene |
| CN107261993B (en) * | 2017-07-26 | 2020-08-21 | 北京联创鼎新石化设备有限公司 | Cracking furnace for preparing acetylene by adopting natural gas partial oxidation method |
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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 | ||
| CX01 | Expiry of patent term |