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WO1996019922A1 - Procede et dispositif de refroidissement d'un liquide pouvant etre pompe, charge ou non de particules - Google Patents

Procede et dispositif de refroidissement d'un liquide pouvant etre pompe, charge ou non de particules Download PDF

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Publication number
WO1996019922A1
WO1996019922A1 PCT/SE1995/001556 SE9501556W WO9619922A1 WO 1996019922 A1 WO1996019922 A1 WO 1996019922A1 SE 9501556 W SE9501556 W SE 9501556W WO 9619922 A1 WO9619922 A1 WO 9619922A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
gas
cooling
condensed
particles
Prior art date
Application number
PCT/SE1995/001556
Other languages
English (en)
Inventor
Björn SIVIK
Original Assignee
Tetra Laval Holdings & Finance
Sivik Bjoern
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tetra Laval Holdings & Finance, Sivik Bjoern filed Critical Tetra Laval Holdings & Finance
Priority to AU43601/96A priority Critical patent/AU4360196A/en
Publication of WO1996019922A1 publication Critical patent/WO1996019922A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS OR COOKING OILS
    • A23D7/00—Edible oil or fat compositions containing an aqueous phase, e.g. margarines
    • A23D7/02—Edible oil or fat compositions containing an aqueous phase, e.g. margarines characterised by the production or working-up
    • A23D7/04—Working-up
    • A23D7/05—Working-up characterised by essential cooling
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/80—Freezing; Subsequent thawing; Cooling
    • A23B2/803—Materials being transported through or in the apparatus, with or without shaping, e.g. in the form of powders, granules or flakes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/80—Freezing; Subsequent thawing; Cooling
    • A23B2/85—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals
    • A23B2/88—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals with direct contact between the food and the chemical, e.g. liquid N2 at cryogenic temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • F28C3/08—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide

Definitions

  • the present invention relates to a method of cooling of a pumpable liquid with or without particles and an arrangement for carrying trough the cooling.
  • Continuous cooling of pumpable liquids usually takes place by means of indirect heat exchange in such a way that the liquid is brought to pass a heat exchanger where it is cooled by cooling media.
  • the cooling may take place in tubes or plate heat exchangers, while heat exchangers provided with scrapers are used for more viscous or particle- containing liquids.
  • the cooling in the different indirectly working cooling means will necessarily be relatively slow since only a part of the liquid gets in direct contact with the cooled surfaces.
  • the method according to the invention is mainly characterized in that a flow of condensed gas is supplied to an amount of said liquid under such conditions that the condensed gas is evapo ⁇ rated, at which the evaporating heat is taken from said liquid, which by reason of that is cooled momentary. A batch of liquid may be cooled in this way. If the cooling should be carried through continuously the flow of condensed gas is directed into a flow of said liquid.
  • the gas which is formed during the evaporation is separated from said liquid for example in a separating chamber.
  • the liquid with or without particles and the rest of the gas is directed to a second separation chamber according to the invention where the rest of the gas is separated and led away from the liquid with our without particles.
  • the separated gas is with advantage compressed and condensed to be used again as a cooling medium.
  • the method according to the invention is especially suitable if the liquid with or without particles is used for production of food at which the used gas is approved for food purposes.
  • Carbon dioxide is preferably used as such a gas.
  • the method is especially useful if liquid with or without particles consists of a viscous liquid which is difficult to cool.
  • the method according to the invention is especially suitable when the liquid consists of fat emulsion intended for production of a spreadable fat.
  • the said liquid consists of a food mixture comprising particulate material important advantages are also obtained.
  • fruit or vegetable mixtures in its own juice or sap as for example cubes of tomato in juice.
  • the mixture may also consist of meat or fish pieces in a sauce.
  • An arrangement for carrying through the method for cooling according to the invention comprises mainly an inlet for condensed gas and an inlet for pumpable liquid with or without particles, which inlets both lead to a zone with a limited volume in order to obtain a momen ⁇ tary contact between the condensed gas and the liquid with or without particles.
  • This zone may with advantage be arranged in an expansion valve or in an expansion chamber connected to a separa ⁇ tion chamber.
  • Said separation chamber may by way of a conduit be connected to a compressor for compression of the gas.
  • said separation chamber is suitably connected to a further separation chamber which further chamber has an outlet which is connected to a second compressor.
  • At least one of the compressors is with advantage connected to a condenser by way of a conduit which condenser in its turn is connected to a storage tank for condensed gas by way of a further conduit from which tank the condensed gas is recirculated for repeated evaporation.
  • a condensed gas is brought to evaporate in a pumpable liquid with or without particles.
  • the condensed gas almost immediately is evaporated, there is obtained a very rapid cooling of the pumpable liquid.
  • the gas to be chosen depends of course on the intended application and its demand for cooling and on the costs which the cooling step may carry. If a more exclusive product shall be rapidly cooled from for example a certain treatment or mixing temperature at or slightly above the room temperature, ethene, Freon or C0 2 may be used. If the cooling takes place at higher temperatures some other gas for example propane, ethane or N 2 0, which condenses at a higher temperature is used.
  • the gas must be approved for food.
  • carbon dioxide is pre ⁇ ferred even if it is possible to work for example with nitrogen if so should be desired.
  • Carbon dioxide condenses at different temperatures depending on the pressure. Accordingly, the condensation temperature is -30 ⁇ C at 14 bar, -0 ⁇ C at 35 bar and 25°C at 60 bar.
  • both condensed gas and liquid is supplied to a zone with a limited volume for example in such a way that condensed gas is supplied to the liquid by way of an inlet leading directly into a flow of said liquid.
  • the condensed gas is evaporated with a corresponding increase in volume and the said zone must consequently be connected to a space with a larger volume. The temperature of the liquid is lowered directly.
  • a flow of fat emulsion with a temperature of 35°C is directed to an evaporating chamber 2 by way of a conduit 1.
  • a flow of condensed gas by way of a second conduit 3.
  • the condensed gas which consists of C0 2 has a pressure of 40 bar.
  • Formed gas and emulsion are then directed further to a separation chamber 4 where a decrease in pressure takes place.
  • the largest part of the C0 2 gas which is set free is directed away by way of a conduit 5 with a pressure of 30 bar.
  • the mixture of fat emulsion and the rest of the gas is, due to the gravity and the pressure in the chamber 4, brought to pass a second means 6, which only allows flow in one direction into a second chamber 7.
  • this second chamber 7 there is a further decrease in pressure such that carbon dioxide gas which is set free leaves the chamber with a pressure of 5 bar through a conduit 8.
  • the fat emulsion is brought to pass a further means 9 before it is led to a working unit 10 with a temperature of about 10°C for example to a pin rotor prior to a following packaging.
  • the means 6 and 9 may consist of pumps or valves which function as locks which separate the separation chambers from each other and from the following working unit. Carbon dioxide gas may also be led away from the working unit 10.
  • the carbon dioxide gas in the conduit 5 with a pressure of 30 bar is led to a compressor 11 where the pressure is increased to 40 bar. From this the gaseous carbon dioxide is led through a conduit 12, 13 to a condenser 14. The compressed gaseous carbon dioxide from the conduit 8 is also directed to the condenser. This gas has been compressed in a compressor 15. In the condenser the temperature is lowered to below 4 ⁇ C, which results in condensation of the gas. From the condenser the condensed carbon dioxide is directed to a storage vessel 16 which functions as a balance vessel. The amount of carbon dioxide which is needed for the cooling is withdrawn from the storage vessel 16 and passes a pump 17 which supplies the condensed gas at a pressure of for example 40 bar. The condensed gas is mixed with new fat emulsion, is evaporated again and is partly removed through the conduit 5. The cooling of the fat emulsion takes place continuously and the carbon dioxide changes state of aggregation cyclically.
  • the separation chamber there are used two chambers where the main part of the evaporated carbon dioxide gas is removed from the first chamber, the separation chamber. If so is considered desirable only one common chamber with one outlet for gas may be used. If only one outlet of gas is used the pressure of the C0 2 gas is low which makes degassing of fat emulsion easier but the process will be more expensive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Procédé de refroidissement d'un liquide pouvant être pompé, chargé ou non de particules, consistant à injecter un flux de gaz condensé dans un écoulement dudit liquide, dans des conditions permettant l'évaporation du gaz. La chaleur d'évaporation est prélevée sur ledit liquide qui s'en trouve momentanément refroidi. Le refroidissement s'effectue dans un dispositif comportant un orifice d'entrée du gaz condensé et un orifice d'entrée du liquide chargé ou non de particules, conduisant tous deux dans une zone de volume réduit permettant d'assurer un contact momentané entre le gaz condensé et ledit liquide.
PCT/SE1995/001556 1994-12-23 1995-12-21 Procede et dispositif de refroidissement d'un liquide pouvant etre pompe, charge ou non de particules WO1996019922A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43601/96A AU4360196A (en) 1994-12-23 1995-12-21 Method and arrangement for cooling of a pumpable liquid with or without particles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9404499A SE509920C2 (sv) 1994-12-23 1994-12-23 Sätt vid och anordning för kontinuerlig kylning av en pumpbar emulsion eller suspension
SE9404499-7 1994-12-23

Publications (1)

Publication Number Publication Date
WO1996019922A1 true WO1996019922A1 (fr) 1996-07-04

Family

ID=20396461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/001556 WO1996019922A1 (fr) 1994-12-23 1995-12-21 Procede et dispositif de refroidissement d'un liquide pouvant etre pompe, charge ou non de particules

Country Status (3)

Country Link
AU (1) AU4360196A (fr)
SE (1) SE509920C2 (fr)
WO (1) WO1996019922A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022855A1 (fr) * 1997-10-31 1999-05-14 Messer Griesheim Gmbh Procede et dispositif permettant de refroidir et de pulveriser des materiaux fluides ou pateux
WO1999065600A1 (fr) * 1998-06-02 1999-12-23 Leiv Eiriksson Nyfotek As Procede de formulation de particules
EP1097916A3 (fr) * 1999-11-05 2002-04-17 Nippon Shokubai Co., Ltd. Procédé de production d'acide acrylique et appareil de production d'acide acrylique
WO2005053440A1 (fr) * 2003-12-03 2005-06-16 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et installation de refroidissement de fluides par contact direct avec des gaz liquefies

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864355C (de) * 1939-05-27 1953-01-26 James Dr Senn Verfahren und Vorrichtung zur Herstellung von Butter durch Bearbeitung des butterhaltigen Materials in Gegenwart eines CO-haltigen Gases
US4000332A (en) * 1972-12-15 1976-12-28 Mjolkcentralen, Ekonomisk Forening High protein low calorie dairy spread and its production
US4217372A (en) * 1969-09-11 1980-08-12 Ebskamp Hermanus J G Method for improving the structural properties of fats
US4267015A (en) * 1978-04-11 1981-05-12 Ciboit Jacques J Process for cooling hot concentrated milk coming from an evaporator, by expansion by stages
US4362758A (en) * 1980-09-30 1982-12-07 Lever Brothers Company Process for producing a low-calorie spread
WO1991006220A1 (fr) * 1989-11-07 1991-05-16 Skånemejerier Ekonomisk Förening Produit de matiere grasse comestible a faible teneur en matiere grasse, et son procede de production
WO1992008363A1 (fr) * 1990-11-13 1992-05-29 Portwall Pty. Limited Fractionnement de lipides et produits ainsi obtenus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864355C (de) * 1939-05-27 1953-01-26 James Dr Senn Verfahren und Vorrichtung zur Herstellung von Butter durch Bearbeitung des butterhaltigen Materials in Gegenwart eines CO-haltigen Gases
US4217372A (en) * 1969-09-11 1980-08-12 Ebskamp Hermanus J G Method for improving the structural properties of fats
US4000332A (en) * 1972-12-15 1976-12-28 Mjolkcentralen, Ekonomisk Forening High protein low calorie dairy spread and its production
US4267015A (en) * 1978-04-11 1981-05-12 Ciboit Jacques J Process for cooling hot concentrated milk coming from an evaporator, by expansion by stages
US4362758A (en) * 1980-09-30 1982-12-07 Lever Brothers Company Process for producing a low-calorie spread
WO1991006220A1 (fr) * 1989-11-07 1991-05-16 Skånemejerier Ekonomisk Förening Produit de matiere grasse comestible a faible teneur en matiere grasse, et son procede de production
WO1992008363A1 (fr) * 1990-11-13 1992-05-29 Portwall Pty. Limited Fractionnement de lipides et produits ainsi obtenus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022855A1 (fr) * 1997-10-31 1999-05-14 Messer Griesheim Gmbh Procede et dispositif permettant de refroidir et de pulveriser des materiaux fluides ou pateux
WO1999065600A1 (fr) * 1998-06-02 1999-12-23 Leiv Eiriksson Nyfotek As Procede de formulation de particules
EP1097916A3 (fr) * 1999-11-05 2002-04-17 Nippon Shokubai Co., Ltd. Procédé de production d'acide acrylique et appareil de production d'acide acrylique
US7541490B2 (en) 1999-11-05 2009-06-02 Nippon Shokubai Co., Ltd. Method for production of acrylic acid and apparatus for production of acrylic acid
WO2005053440A1 (fr) * 2003-12-03 2005-06-16 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et installation de refroidissement de fluides par contact direct avec des gaz liquefies
AU2004294805B2 (en) * 2003-12-03 2010-04-22 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and plant for cooling fluids by direct contact with liquefied gases

Also Published As

Publication number Publication date
AU4360196A (en) 1996-07-19
SE9404499D0 (sv) 1994-12-23
SE9404499L (sv) 1996-06-24
SE509920C2 (sv) 1999-03-22

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