CN1903444A - Multiple air-intaking channel and supersonic speed whirl-flow separator and its back pressure device - Google Patents
Multiple air-intaking channel and supersonic speed whirl-flow separator and its back pressure device Download PDFInfo
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- CN1903444A CN1903444A CN 200610043158 CN200610043158A CN1903444A CN 1903444 A CN1903444 A CN 1903444A CN 200610043158 CN200610043158 CN 200610043158 CN 200610043158 A CN200610043158 A CN 200610043158A CN 1903444 A CN1903444 A CN 1903444A
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Abstract
A supersonic cyclone separation and pressure return mechanism with multiple air inlet channels is composed of flow guide cavity, jet tube, cyclone separation segment, pressure returning unit, annular liquid discharging outlets between cyclone separation segment and pressure returning unit, and a locator on said pressure returning unit for regulating the gap between liquid discharging outlets.
Description
Technical field
The present invention relates to a kind of wet gas piece-rate system, be specifically related to a kind of many air intake ducts supersonic speed rotational flow separation and back pressure device of removing the harmful constituent (steam, C4, C5 etc.) that is unfavorable in the natural gas that remote pipeline is carried.
Background technology
In China land and ocean gas field development, how to realize efficient, the economic processed of natural gas, and satisfy environmental protection requirement, make that the dew-point temperature of water drops to following 5-15 ℃ of appendix minimum environment temperature along the line in the natural gas, the line clogging major accident takes place to avoid forming hydrate, making constituent contents such as heavy hydrocarbon in the natural gas be reduced in the scope that technological process requires simultaneously, is the key subjects that press for solution in the gas production.
The method of natural gas separation at present has three kinds: oil-absorption process, condensation separation method and adsorption method of separation.Wherein, oil-absorption process be divided into again the normal temperature absorption process and in, the low temperature absorption method; Condensation method is divided into separation by deep refrigeration and shallow cold partition method again.For the more advanced technology of well head gas dehydration is skid-mounted type glycol dehydration device, as Chinese patent " gas wave refrigeration gas dehydration skid-mounted unit " (disclosed day on February 18th, 1998, publication number CN96225110.0, January 12 1996 applying date) be a kind of gas wave refrigeration dehydration skid-mounted device that is used for the natural gas cold condensation for removing water, formed by equipment such as air wave refrigerating device, methyl alcohol mist jet pump or micro-throttling alchol injector, dry-wet gas cool exchanger, gas-liquid separators.Shortcomings such as but there is the energy resource consumption height in these traditional isolation technics, the condensate rate of recovery is low, equipment takes up space greatly, invest high, the plant maintenance workload is big.For reducing operating cost, improve separative efficiency, the development new separation technology is extremely urgent.World oil giant Shell Co. Ltd (Shell) 1997 is after the relevant patent of having bought the supersonic speed isolation technics, the well head natural gas processing is is further researched and developed and is puted forth effort to be applied in beginning, on theoretical and device designing technique, obtain a series of breakthroughs, successively to the application of Twister device multinomial international monopoly: WO 2004/020074A1 " CYCLONIC FLUIDSEPRATOR " (11March 2004); WO 03/092850A1 " CYCLONIC FLUID SEPRATOREQUIPPED WITH ADJUSTABLE VORTEX FINDER POSITION " (13 November2003); US 6513345B1 " NOZZLE FOR SUPERSONIC GAS FLOW AND AN INERTIASEPRATOR " (Feb.4,2003); US 2003/0145724A1 " SUPERSONIC SEPRATORAPPARATUS AND METHOD " (Aug.7,2003); US 2002/0194988A1 " SUPERSONICSEPRATOR APPARATUS AND METHOD " (Dec.26,2002); US 6524368B2 " SUPERSONIC SEPRATOR APPARATUS AND METHOD " (Aug.17,2004).The said firm has obtained checking and has used in company of Petronas offshore gas field and Nigeria's gas field development in 2003, at present still in improving and improving.The Twister device of Shell Co. Ltd research and development is mainly used in the dehydration of gases at high pressure, particularly is about the condition that 7～15MPa and hydrocarbon dew point pressure surpass 5MPa at dewatering pressure.It all has bigger saving on weight, space and cost, at sea application facet has bigger advantage, can replace skid-mounted type glycol dehydration device.It also has unattended, no-movable part, does not need to add characteristics such as chemical agent.But it is the elongated dalta wing in big angle of sweep that this device produces the parts of eddy flow, although it has the high advantage of rotational flow separation efficient, but also being member the weakest in the device simultaneously, is to reduce the device inherent safety, reduce service life, reduce the principal element of stagnation pressure efficient.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of structure letter is provided, working stability, and can realize that the preliminary treatment of well head natural gas separates many air intake ducts supersonic speed rotational flow separation and the back pressure device that is harmful to remote pipeline conveying component.
For achieving the above object, the technical solution used in the present invention is: comprise diversion cavity and the jet pipe that is connected with diversion cavity and rotational flow separation section, be characterized in, the outlet of rotational flow separation section is connected with the back pressure device, between rotational flow separation section and back pressure device, also be provided with the ring-type leakage fluid dram, the back pressure device is provided with the locator that can regulate the leakage fluid dram gap, a plurality of nozzles of said jet pipe evenly distribute, and the angle of nozzle and rotational flow separation section inner surface is the 78-90 degree, and the axis angle of nozzle and rotational flow separation section is the 40-62 degree.
Nozzle of the present invention is tapering type or superonic flow nozzzle; Rotational flow separation Duan Weiyi flaring structure, its angle of flare are the 0-1 degree; The length of rotational flow separation section is 5-10 times of its average diameter; The angle of flare of back pressure device is the 3-5 degree; Leakage fluid dram is a flaring passage; The back pressure device is adjustable by locator with respect to the axial location of leakage fluid dram.
The present invention utilizes the multi nozzle air inlet to realize containing wet saturated gas supersonic condensation separation, and diversion cavity makes air-flow evenly enter jet pipe; Jet pipe makes the air-flow speedup to high-speed, and temperature is reduced to below the required degree of supercooling of moisture condensation; The rotational flow separation section makes biphase gas and liquid flow rotation at a high speed in disengagement chamber, realizes gas-liquid separation; Leakage fluid dram flows the liquid film of wall and leaves the rotational flow separation chamber; The back pressure device makes dry gas through further back pressure, realizes reduction of speed, intensification.
Description of drawings:
Fig. 1 is a whole vertical section of the present invention schematic diagram;
Fig. 2 is a fundamental diagram of the present invention;
Fig. 3 is the textural association mode installation diagram of 3 of jet pipe 2 of the present invention and rotational flow separation sections, and wherein Fig. 3 (a) is the left view of jet pipe 2, and Fig. 3 (b) is the front view of jet pipe 2, and Fig. 3 (c) is a jet pipe 2 and the installation diagram of rotational flow separation section 3;
Fig. 4 is the structural representation of rotational flow separation section 3 of the present invention;
Fig. 5 is the structural representation of rotational flow separation section 3 of the present invention, leakage fluid dram 4 and back pressure device 5.
The specific embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Referring to Fig. 1, the present invention includes diversion cavity 1 and jet pipe 2 that is connected with diversion cavity 1 and rotational flow separation section 3, the outlet of rotational flow separation section 3 is connected with back pressure device 5, between rotational flow separation section 3 and back pressure device 5, also be provided with leakage fluid dram 4, because device is operated in high pressure and the mordant environment, so the material of claimed apparatus is high pressure resistant, corrosion-resistant and erosion.
Referring to Fig. 2, operation principle of the present invention is as follows: moisture rectification and change flow direction in diversion cavity 1 guarantees high pressure draught along circumferentially entering jet pipe 2, and can play certain stable incoming-flow pressure effect; Air-flow enters jet pipe 2 pressure can be converted to kinetic energy, speed reaches the supersonic speed simultaneous temperature and sharply descends, then the higher boiling composition in the incoming flow is (as the steam in the natural gas, high-carbon hydrocarbon etc.) in cold excessively atmosphere, condense nucleation and growing up, because the high velocity air of entrained drip is along certain separating cyclone tube 3 that tangentially enters, two phase flow rotates at a high speed in rotational flow separation section 3 and advances, for the position that guarantees shock surface near leakage fluid dram, and distance is the smaller the better, the angle of flare of rotational flow separation section 3 is at the 0-1 degree, drop tube wall face motion to rotational flow separation section 3 under centrifugal action forms liquid film, drive in preceding inlet air flow is downstream dirty, arrive leakage fluid dram 4 isolated liquid in back and fraction gas and flow out along leakage fluid dram 4, the dry gas in the main flow boosts in returning pressure tube device 5, reduction of speed, intensification reaches the conveying requirement.
Referring to Fig. 3, to select profile for use be the rectangle supersonic nozzle to nozzle 6 in the jet pipe 2, and nozzle 6 is the 78-86 degree with the angle α of the inner surface of rotational flow separation section 3, and with the axis angle β of rotational flow separation section 3 be the 40-62 degree.In nozzle 6, steam in the natural gas and heavy hydrocarbon component are condensed and the drop growth process, form biphase gas and liquid flow and enter rotational flow separation section 3, require nozzle 6 to be designed to the jet pipe or the supersonic nozzle of tapered configuration according to dew point.
Referring to Fig. 4, the flow mechanism of rotational flow separation section 3 combines vortex tube technology and cyclonic separation technology, promptly in the rotational flow separation process, because the mutual shear flow of fluid inside, the gas flow temperature that is in the centre is low, and be in the gas flow temperature height at outer position, therefore the center aggravation of condensing, impel new drop to form, existing drop continues to grow up, and these drops are at the wall formation liquid film of superpower centrifugal action lower edge spiral motion to rotational flow separation section 3, in order to guarantee the smooth and easy attenuate boundary layer thickness that circulates, and exospheric temperature is reduced, and rotational flow separation section angle of flare γ is between the 3-7 degree; In order to guarantee that separative efficiency reduces the pressure loss simultaneously, and make shock surface near leakage fluid dram 4, its length L is 5-10 a times of its average diameter d, because the difference of the flow mechanism of rotational flow separation section 3, general roughness does not have basic influence to separation, can reduce the requirement on machining accuracy to its inner surface.
Referring to Fig. 5, also be provided with the locator 7 that to regulate leakage fluid dram 4 gaps on the back pressure device 5.The liquid film of the internal face of rotational flow separation section 3 and small part of gas flow into leakage fluid dram 4 under air-flow drives, change the size that back pressure device 5 axial locations change leakage fluid dram 4 gaps by the thickness of regulating locator 7, change the flow that biphase gas and liquid flow is discharged thus.8,9 are respectively targeted duct and dry gas conveyance conduit among the figure.
Dry gas after the drop separation need obtain higher back pressure device inlet pressure by normal shock wave if still be in supersonic speed, to improve the stagnation pressure efficient of back pressure device 5.The design feature of back pressure device has 2: it is very sharp that (1) stretches into the leading edge of separator, can form shock wave at this for the supersonic speed incoming flow, helps back pressure, to the subsonic speed incoming flow, then plays guide functions; (2) back pressure device 5 can realize that the size that changes leakage fluid dram 4 flows to adapt to off-design behaviour by locator 7.The angle of flare θ of back pressure device 5 is between the 3-5 degree.Because the length of rotational flow separation section 3 is shorter, air-flow keeps higher swirl velocity before entering back pressure device 5, be unfavorable for back pressure efficient, and back pressure device 5 can reduce the swirl velocity of air-flow.The runner of leakage fluid dram 4 has the identical function of boosting, slow down, heating up with back pressure device 5.
The present invention with its at low quality, space structure compactness, cheap, protection environment, energy savings, unattended, no-movable part, do not need to add characteristics such as chemical agent and have very wide application prospect; especially in the exploitation of marine oil gas field, this device tool has an enormous advantage.Compare with the Twister apparatus structure, the present invention abandons the dalta wing structure, adopts jet pipe group tangential admission mode to realize eddy flow, and such advantage has: regulating measure is convenient, is easy to control, can adapt to raw natural gas composition etc. than cataclysm; Eddy flow section diameter flexible design can be handled little tolerance; Apparatus of the present invention are compacter, and processing, assembly precision reduce, and floor space is littler.
Claims (7)
1, a kind of many air intake ducts supersonic speed rotational flow separation and back pressure device, comprise diversion cavity (1) and jet pipe (2) that is connected with diversion cavity (1) and rotational flow separation section (3), it is characterized in that: the outlet of rotational flow separation section (3) is connected with back pressure device (5), between rotational flow separation section (3) and back pressure device (5), also be provided with ring-type leakage fluid dram (4), back pressure device (5) is provided with the locator (7) that can regulate leakage fluid dram (4) gap, a plurality of nozzles (6) of said jet pipe (2) evenly distribute, and nozzle (6) is the 78-90 degree with the angle α of rotational flow separation section (3) inner surface, and nozzle (6) is the 40-62 degree with the axis angle β of rotational flow separation section (3).
2, many air intake ducts supersonic speed rotational flow separation according to claim 1 and back pressure device is characterized in that: said nozzle (6) is tapering type or superonic flow nozzzle.
3, many air intake ducts supersonic speed rotational flow separation according to claim 1 and back pressure device is characterized in that: said rotational flow separation section (3) is a flaring structure, and its angle of flare γ is the 0-1 degree.
4, many air intake ducts supersonic speed rotational flow separation according to claim 1 and back pressure device is characterized in that: the length of said rotational flow separation section (3) is 5-10 times of its average diameter.
5, many air intake ducts supersonic speed rotational flow separation according to claim 1 and back pressure device is characterized in that: the angle of flare of said back pressure device (5) is the 3-5 degree.
6, many air intake ducts supersonic speed rotational flow separation according to claim 1 and back pressure device is characterized in that: said leakage fluid dram (4) is a flaring passage.
7, many air intake ducts supersonic speed rotational flow separation according to claim 1 and back pressure device is characterized in that: said back pressure device (5) is adjustable by locator (7) with respect to the axial location of leakage fluid dram (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100431582A CN100400171C (en) | 2006-07-13 | 2006-07-13 | Multiple air-intaking channel and supersonic speed whirl-flow separator and its back pressure device |
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| CNB2006100431582A CN100400171C (en) | 2006-07-13 | 2006-07-13 | Multiple air-intaking channel and supersonic speed whirl-flow separator and its back pressure device |
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| CN1903444A true CN1903444A (en) | 2007-01-31 |
| CN100400171C CN100400171C (en) | 2008-07-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274805A (en) * | 2011-07-12 | 2011-12-14 | 北京航空航天大学 | Double-throat self-starting ultrasonic cyclone separator and separation method thereof |
| CN102744166A (en) * | 2012-07-04 | 2012-10-24 | 大连理工大学 | Core-adjustable variable-cross-section-tube ultrasonic condensation cyclone separator |
| CN102839948A (en) * | 2012-09-18 | 2012-12-26 | 成都鼎鸿石油技术有限公司 | Spiral flow drainage gas recovery device for natural gas extraction |
| CN106321246A (en) * | 2015-07-01 | 2017-01-11 | 波音公司 | Inlet flow restrictor |
| CN109356554A (en) * | 2018-11-28 | 2019-02-19 | 西安石油大学 | A kind of underground self-operated type forced vortex water drainage gas production device |
| CN112456594A (en) * | 2020-10-22 | 2021-03-09 | 中国科学院南海海洋研究所 | Sample inlet and outlet device for deep sea trace gas in-situ measuring instrument |
| CN113389607A (en) * | 2021-06-08 | 2021-09-14 | 东南大学 | High-pressure pipe network pressure energy recovery system |
| WO2024076598A1 (en) * | 2022-10-04 | 2024-04-11 | Dryline Technologies Lp | Liquid-gas separation using multiple inlet nozzles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274743Y (en) * | 1996-01-12 | 1998-02-18 | 大连理工大学 | Air wave refrigeration natural gas dewatering apparatus |
| EA002780B1 (en) * | 1998-10-16 | 2002-08-29 | Трансланг Текнолоджиз Лтд. | Method and apparatus for separation gas mixture components and liquefaction therefor |
| US6524368B2 (en) * | 1998-12-31 | 2003-02-25 | Shell Oil Company | Supersonic separator apparatus and method |
| DE60317184T2 (en) * | 2002-04-29 | 2008-02-28 | Shell Internationale Maatschappij B.V. | CYCLONE FLUID SEPARATOR EQUIPPED WITH AN ADJUSTABLE DIVE TUBE POSITION |
| AU2003267040B2 (en) * | 2002-09-02 | 2006-12-21 | Shell Internationale Research Maatschappij B.V. | Cyclonic fluid separator |
-
2006
- 2006-07-13 CN CNB2006100431582A patent/CN100400171C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274805A (en) * | 2011-07-12 | 2011-12-14 | 北京航空航天大学 | Double-throat self-starting ultrasonic cyclone separator and separation method thereof |
| CN102274805B (en) * | 2011-07-12 | 2013-09-18 | 北京航空航天大学 | Double-throat self-starting ultrasonic cyclone separator and separation method thereof |
| CN102744166A (en) * | 2012-07-04 | 2012-10-24 | 大连理工大学 | Core-adjustable variable-cross-section-tube ultrasonic condensation cyclone separator |
| CN102839948A (en) * | 2012-09-18 | 2012-12-26 | 成都鼎鸿石油技术有限公司 | Spiral flow drainage gas recovery device for natural gas extraction |
| CN106321246A (en) * | 2015-07-01 | 2017-01-11 | 波音公司 | Inlet flow restrictor |
| CN106321246B (en) * | 2015-07-01 | 2020-06-26 | 波音公司 | Air inlet flow limiter |
| CN109356554A (en) * | 2018-11-28 | 2019-02-19 | 西安石油大学 | A kind of underground self-operated type forced vortex water drainage gas production device |
| CN112456594A (en) * | 2020-10-22 | 2021-03-09 | 中国科学院南海海洋研究所 | Sample inlet and outlet device for deep sea trace gas in-situ measuring instrument |
| CN112456594B (en) * | 2020-10-22 | 2021-11-05 | 中国科学院南海海洋研究所 | Sample inlet and outlet device for deep sea trace gas in-situ measuring instrument |
| CN113389607A (en) * | 2021-06-08 | 2021-09-14 | 东南大学 | High-pressure pipe network pressure energy recovery system |
| WO2024076598A1 (en) * | 2022-10-04 | 2024-04-11 | Dryline Technologies Lp | Liquid-gas separation using multiple inlet nozzles |
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| CN100400171C (en) | 2008-07-09 |
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