WO2000002653A1 - Verfahren und vorrichtung zur erhöhung des druckes beziehungsweise steigerung der enthalpie eines mit überschall strömenden fluids - Google Patents
Verfahren und vorrichtung zur erhöhung des druckes beziehungsweise steigerung der enthalpie eines mit überschall strömenden fluids Download PDFInfo
- Publication number
- WO2000002653A1 WO2000002653A1 PCT/AT1999/000173 AT9900173W WO0002653A1 WO 2000002653 A1 WO2000002653 A1 WO 2000002653A1 AT 9900173 W AT9900173 W AT 9900173W WO 0002653 A1 WO0002653 A1 WO 0002653A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- pressure
- steam
- increasing
- supersonic speed
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3123—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3122—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof the material flowing at a supersonic velocity thereby creating shock waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3123—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements
- B01F25/31233—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements used successively
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
- B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87571—Multiple inlet with single outlet
- Y10T137/87587—Combining by aspiration
- Y10T137/87595—Combining of three or more diverse fluids
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87571—Multiple inlet with single outlet
- Y10T137/87587—Combining by aspiration
- Y10T137/87603—Plural motivating fluid jets
Definitions
- the invention relates to a method for increasing the pressure or increasing the enthalpy of a fluid flowing at supersonic speed, steam being mixed with liquid and this mixture being accelerated to supersonic speed, after which a condensation surge is then triggered.
- compressible two-phase flows behave in such a way that the state variables - with the exception of the entropy, the temperature and the resting temperature - change in the opposite and supersonic range (see E. Truckenbrodt, "Fluidmechanik", Volume 2, Springer Verlag 1980, page 68). It means e.g. the supply of heat to a supersonic flow is a delay, whereas an acceleration to a subsonic flow is accelerated.
- the condensation surge occurs when a fluid containing supersaturated water vapor flows, and is the result of a sudden condensation of the vapor that occurs very quickly and in a narrow zone called the "condensation surge surface".
- the stability of the condensation surge against small disturbances in the direction perpendicular to its surface depends on the thermodynamic state of the steam before the impact. This just has to correspond to the beginning of a rapid condensation of the steam. A detailed derivation of this process can be found in LD Landau and EMLifschitz: Hydrodynamik: Akademie- Verlag, Berlin 1966.
- the mechanism of the pressure increase is due to the fact that the condensation of the vapor creates vacuum spaces which are suddenly filled up by the fluid flowing in at the speed of sound. The resulting kinetic energy is converted into pressure.
- the strength of the pressure increase due to the condensation depends on the temperature difference between steam and liquid or on the liquid temperature when mixed with the steam and on the position of the shock.
- the supply of the additional liquid can advantageously be brought about by the negative pressure generated by the flowing mixture, as a result of which additional means for conveying the added liquid are unnecessary.
- a steam acceleration nozzle, a feed gap for a liquid medium, a converging mixing nozzle and a diffuser are provided, a parallel flow section being arranged between the mixing nozzle and the diffuser, in which a gap dividing the parallel flow section is arranged , the length of the gap measured in the direction of flow is between 0.5 and 0.9 times the diameter of the parallel flow section.
- This gap size ensures that a sufficient amount of additional liquid is sucked in automatically without impairing the flow of the vapor / liquid mixture.
- Fig. 1 shows schematically the structure of the device according to the invention.
- Laval nozzle 1 denotes a Laval nozzle, the convergent part 2 of which has an opening angle ⁇ of approximately 25-60 ° and the divergent part 3 of which has an opening angle ⁇ of approximately 3-20 °.
- This Laval nozzle 1 is followed by a mixing nozzle 4 consisting of convergent and cylindrical regions, the convergent region ⁇ having an angle of approximately 15 to 30 °, the length L1 of the cylindrical region being approximately 1 to 3 times its diameter.
- the diverging part of the Laval nozzle 1 projects into this convergent region, a gap 5 being left open between the end of the Laval nozzle and the inner wall of the mixing nozzle, via which the liquid supplied via the line 6 is mixed with the vapor.
- a parallel flow part 8 adjoins the convergent part 7 of the mixing nozzle 4, which is followed by a parallel flow part 9 of a diffuser 10.
- the length L2 of the parallel flow part 9 is approximately 1 to 5 times its inner diameter D2.
- the opening angle of the diverging areas of the diffuser 10 is approximately 15-45 °.
- a gap 11 is left, the gap width B of which is approximately 0.5 times the diameter D1 of the parallel flow part 8 of the mixing nozzle 4.
- the gap 11 is connected to an annular space 12, via which secondary liquid can be introduced into the flowing gas / liquid mixture via a line 13.
- a pressure is created as a result of the flow acceleration, which is less than the atmospheric pressure.
- a back pressure is generated via a throttle valve, not shown, which is slowly increased until a vertical compression shock occurs in the parallel flow part 9 of the diffuser, in which the steam condenses completely via the compression shock. This leads to the desired pressure increase in the flow.
- a secondary flow of liquid is introduced into the condensation zone before the compression stroke via the gap 11 between the mixing nozzle and the diffuser, as a result of which the condensation process is further accelerated and the pressure is increased.
- the condensation process is completely completed with the shock.
- the condensation of the steam is associated with thermal energy, which releases about 600 cal / g.
- the heat is absorbed by the liquid flowing out of the diffuser.
- the magnitude of the pressure increase that can be achieved by the additionally supplied liquid is illustrated using an example in Table 1.
- Table 1 The data in Table 1 are shown graphically in the diagram connected as FIG. 2. This diagram clearly shows the pressure increase due to the added secondary liquid.
- the pressure in the flowing liquid increases from 17 bar to 21 bar at 16%, from 18 to 23 bar at 18% and from 19 to 25 bar with 18% addition of secondary fluid.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99930911T ATE234145T1 (de) | 1998-07-08 | 1999-07-07 | Verfahren und vorrichtung zur erhöhung des druckes beziehungsweise steigerung der enthalpie eines mit überschall strömenden fluids |
CA002302648A CA2302648A1 (en) | 1998-07-08 | 1999-07-07 | Method and apparatus for increase of pressure or rise of enthalpy of a fluid flowing at supersonic speed |
DE59904529T DE59904529D1 (de) | 1998-07-08 | 1999-07-07 | Verfahren und vorrichtung zur erhöhung des druckes beziehungsweise steigerung der enthalpie eines mit überschall strömenden fluids |
US09/508,218 US6523991B1 (en) | 1998-07-08 | 1999-07-07 | Method and device for increasing the pressure or enthalpy of a fluid flowing at supersonic speed |
EP99930911A EP1034029B1 (de) | 1998-07-08 | 1999-07-07 | Verfahren und vorrichtung zur erhöhung des druckes beziehungsweise steigerung der enthalpie eines mit überschall strömenden fluids |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1186/98 | 1998-07-08 | ||
AT118698 | 1998-07-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000002653A1 true WO2000002653A1 (de) | 2000-01-20 |
Family
ID=3508473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1999/000173 WO2000002653A1 (de) | 1998-07-08 | 1999-07-07 | Verfahren und vorrichtung zur erhöhung des druckes beziehungsweise steigerung der enthalpie eines mit überschall strömenden fluids |
Country Status (5)
Country | Link |
---|---|
US (1) | US6523991B1 (de) |
EP (1) | EP1034029B1 (de) |
CA (1) | CA2302648A1 (de) |
DE (1) | DE59904529D1 (de) |
WO (1) | WO2000002653A1 (de) |
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EP2543642A1 (de) * | 2011-07-04 | 2013-01-09 | Reiflock Abwassertechnik GmbH | Verfahren zur Behandlung von Klärschlamm |
EP2746383A1 (de) * | 2012-12-20 | 2014-06-25 | Reiflock Abwassertechnik GmbH | Vorrichtung und Verfahren zur Behandlung von Biomasse |
US9239063B2 (en) | 2004-07-29 | 2016-01-19 | Pursuit Marine Drive Limited | Jet pump |
CN106195347A (zh) * | 2016-07-11 | 2016-12-07 | 常州大学 | 一种设有储液器的防冰堵的自动注液节流阀 |
US9931648B2 (en) | 2006-09-15 | 2018-04-03 | Tyco Fire & Security Gmbh | Mist generating apparatus and method |
EP1592957B1 (de) * | 2003-02-14 | 2018-10-10 | Malvern Panalytical Limited | Mehrstufiges verdünnungssystem und -verfahren |
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US6623154B1 (en) * | 2000-04-12 | 2003-09-23 | Premier Wastewater International, Inc. | Differential injector |
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CA2391757C (en) * | 2002-06-26 | 2004-07-20 | Per Westergaard | Burner fuel mixer head for concurrently burning two gaseous fuels |
CA2501816C (en) * | 2002-10-11 | 2011-03-22 | Pursuit Dynamics Plc | Jet pump |
US20050061378A1 (en) * | 2003-08-01 | 2005-03-24 | Foret Todd L. | Multi-stage eductor apparatus |
US7025883B1 (en) | 2003-09-30 | 2006-04-11 | Ok Technologies, Llc | Autotrofic sulfur denitration chamber and calcium reactor |
JP2007509734A (ja) * | 2003-10-03 | 2007-04-19 | オー.ケー.テクノロジーズ,リミティド ライアビリティ カンパニー | 廃水処理のシステム及び方法 |
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US11753179B2 (en) | 2020-10-14 | 2023-09-12 | General Electric Company | Aircraft engines with a fuel cell |
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EP0150171A2 (de) * | 1984-01-16 | 1985-07-31 | Ernst Dipl.-Ing. Braun | Verfahren zur Begasung eines Gas-Flüssigkeit-Gemisches |
EP0475284A1 (de) * | 1990-09-06 | 1992-03-18 | TRANSSONIC ÜBERSCHALL-ANLAGEN GmbH | Verfahren und Vorrichtung zur Einwirkung eines Verdichtungsstosses auf Fluide |
EP0555498A1 (de) * | 1992-02-11 | 1993-08-18 | April Dynamics Industries 1990 Ltd. | Zweiphasiges Ultraschall-Strömungssystem |
WO1993016791A2 (en) * | 1992-02-11 | 1993-09-02 | April Dynamics Industries Ltd. | A two-phase supersonic flow system |
US5338113A (en) * | 1990-09-06 | 1994-08-16 | Transsonic Uberschall-Anlagen Gmbh | Method and device for pressure jumps in two-phase mixtures |
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GB802691A (en) * | 1955-10-26 | 1958-10-08 | Gaskell & Chambers Ltd | Liquids mixing device |
BE764407A (fr) * | 1971-03-17 | 1971-08-16 | Four Industriel Belge | Dispositif pour le dosage d'un melange de deux gaz. |
US4030969A (en) * | 1972-06-13 | 1977-06-21 | Defibrator Ab | Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle |
US4210166A (en) * | 1977-09-14 | 1980-07-01 | Munie Julius C | Mixing apparatus |
SU1308370A1 (ru) * | 1985-07-10 | 1987-05-07 | Московский филиал Всесоюзного научно-исследовательского института жиров | Струйный смеситель-реактор |
US5171090A (en) * | 1990-04-30 | 1992-12-15 | Wiemers Reginald A | Device and method for dispensing a substance in a liquid |
US5061406A (en) * | 1990-09-25 | 1991-10-29 | Union Carbide Industrial Gases Technology Corporation | In-line gas/liquid dispersion |
FI98892C (fi) * | 1994-11-15 | 1997-09-10 | Turun Asennusteam Oy | Polymeerien liuotusmenetelmä ja -laite |
-
1999
- 1999-07-07 WO PCT/AT1999/000173 patent/WO2000002653A1/de active IP Right Grant
- 1999-07-07 US US09/508,218 patent/US6523991B1/en not_active Expired - Fee Related
- 1999-07-07 DE DE59904529T patent/DE59904529D1/de not_active Expired - Lifetime
- 1999-07-07 EP EP99930911A patent/EP1034029B1/de not_active Expired - Lifetime
- 1999-07-07 CA CA002302648A patent/CA2302648A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0150171A2 (de) * | 1984-01-16 | 1985-07-31 | Ernst Dipl.-Ing. Braun | Verfahren zur Begasung eines Gas-Flüssigkeit-Gemisches |
EP0475284A1 (de) * | 1990-09-06 | 1992-03-18 | TRANSSONIC ÜBERSCHALL-ANLAGEN GmbH | Verfahren und Vorrichtung zur Einwirkung eines Verdichtungsstosses auf Fluide |
US5338113A (en) * | 1990-09-06 | 1994-08-16 | Transsonic Uberschall-Anlagen Gmbh | Method and device for pressure jumps in two-phase mixtures |
EP0555498A1 (de) * | 1992-02-11 | 1993-08-18 | April Dynamics Industries 1990 Ltd. | Zweiphasiges Ultraschall-Strömungssystem |
WO1993016791A2 (en) * | 1992-02-11 | 1993-09-02 | April Dynamics Industries Ltd. | A two-phase supersonic flow system |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1592957B1 (de) * | 2003-02-14 | 2018-10-10 | Malvern Panalytical Limited | Mehrstufiges verdünnungssystem und -verfahren |
US9239063B2 (en) | 2004-07-29 | 2016-01-19 | Pursuit Marine Drive Limited | Jet pump |
US9931648B2 (en) | 2006-09-15 | 2018-04-03 | Tyco Fire & Security Gmbh | Mist generating apparatus and method |
EP2543642A1 (de) * | 2011-07-04 | 2013-01-09 | Reiflock Abwassertechnik GmbH | Verfahren zur Behandlung von Klärschlamm |
EP2746383A1 (de) * | 2012-12-20 | 2014-06-25 | Reiflock Abwassertechnik GmbH | Vorrichtung und Verfahren zur Behandlung von Biomasse |
CN106195347A (zh) * | 2016-07-11 | 2016-12-07 | 常州大学 | 一种设有储液器的防冰堵的自动注液节流阀 |
Also Published As
Publication number | Publication date |
---|---|
EP1034029B1 (de) | 2003-03-12 |
EP1034029A1 (de) | 2000-09-13 |
CA2302648A1 (en) | 2000-01-20 |
US6523991B1 (en) | 2003-02-25 |
DE59904529D1 (de) | 2003-04-17 |
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