EP0906548A1 - Dispositif de refroidissement de fractions de petrole pendant le transport du petrole dans des petroliers - Google Patents

Dispositif de refroidissement de fractions de petrole pendant le transport du petrole dans des petroliers

Info

Publication number
EP0906548A1
EP0906548A1 EP97918438A EP97918438A EP0906548A1 EP 0906548 A1 EP0906548 A1 EP 0906548A1 EP 97918438 A EP97918438 A EP 97918438A EP 97918438 A EP97918438 A EP 97918438A EP 0906548 A1 EP0906548 A1 EP 0906548A1
Authority
EP
European Patent Office
Prior art keywords
coolant
condensation
oil
heat exchanger
refrigerating machine
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP97918438A
Other languages
German (de)
English (en)
Inventor
Carl Jorgen Rummelhoff
Jorund Bakke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moss Maritime AS
Original Assignee
Kvaerner Maritime AS
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 Kvaerner Maritime AS filed Critical Kvaerner Maritime AS
Publication of EP0906548A1 publication Critical patent/EP0906548A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine

Definitions

  • Cooling device for condensation of oil fractions during oil transport on tankers
  • the invention concerns a cooling device as specified in the introduction to claim 1.
  • a cooling device is described where brine is used as a cold-carrying fluid.
  • the capacity of this unit's refrigerating machine is so great that during operation in day-time, in addition to the continuous cooling requirements of a consumer it can also effect a cooling of brine in a storage tank and accumulation of surplus cold therein.
  • the refrigerating machine can be stopped and the cooled brine in the storage tank is pumped to the consumer.
  • the refrigerating machine's capacity is at least as great as the current cooling requirement at any time.
  • a continuous operation of the refrigerating machine is therefore not considered to be necessary or economically justifiable.
  • the consumer receives a continuous supply of the cold-carrying fluid.
  • the object of the invention is to provide a device of the type mentioned in the introduction which is not encumbered by the above-mentioned disadvantages.
  • a device for condensation of oil fractions during oil loading on a tanker comprises a pipe 2 via which, e.g., a gas containing several fractions, at least some of which have to be condensed, is passed to a first heat exchanger 4.
  • This heat exchanger 4 may in the known manner comprise a first passage 6 which, e.g., is composed of an inner compartment in a housing 8 of the heat exchanger 4, and a second passage 10, which is composed of a pipe or the like, which extends in the inner compartment.
  • a coolant is supplied via a supply pipe to the second passage 10 of the heat exchanger 4 from a cooling plant 14 and passed back to the cooling plant 14 via a return pipe 16.
  • the cooling plant 14 comp ⁇ ses a refrigerating machine 18.
  • a storage tank 20 for refrigerated coolant In the supply pipe 12 between the refrigerating machine 18 and the first heat exchanger 4 there is provided a storage tank 20 for refrigerated coolant, and in the return pipe 16 there is provided a return tank 22 for heated coolant, i.e. coolant which has been used for cooling in the heat exchanger 4.
  • Gas fractions which have been condensed in the first heat exchanger 4 are passed to a collecting tank 24 from this heat exchanger 4 via a pipe 26.
  • Gas fractions which have not been condensed in the first heat exchanger 4 are passed via a pipe 28 to a second heat exchanger 30.
  • this heat exchanger 30 has a first passage 32 which is composed of an inner compartment in a housing 34, and a second passage 26 which is composed of a pipe or the like which extends in the inner compartment.
  • the pipe 28 communicates with an inlet end of the second passage 36 of the second heat exchanger 30, and the outlet end of this passage 36 leads, e.g., into the open air via a pipe 38.
  • Gas from the pipe 2 may be supplied to the first passage 32 by the second heat exchanger 30 via a pipe 40.
  • a shut-off valve 42 which, e.g., is electrically operated.
  • the temperature of the fluid which flows in the pipe 38 from the second passage 36 of the second heat exchanger 30 may be established by a temperature sensor 44, which via an electrical cable 46 can emit an impulse to the shut-off valve 42 for operation thereof. If the temperature is less than a predetermined threshold temperature corresponding to the condensation temperature for one of the fractions of the gas, the valve is opened. If the temperature is greater, the valve is closed.
  • Condensed gas in the second heat exchanger 30 can flow to the collecting tank 24 from the first passage 32 via a pipe 48.
  • the device works as follows.
  • the gas is passed via the pipe 2 to the first passage 6 of the heat exchanger 4, where some fractions of the gas condense and flow to the collecting tank 24. Heat energy from the remaining fractions of the gas, however, is transferred to the coolant, thus causing it to be heated and these fractions to be cooled.
  • the non-condensed fractions from the first passage 6 of the first heat exchanger are therefore supplied to the second passage 36 of the second heat exchanger 30 from which the fractions can flow out into the open air. If, however, the temperature of these non-condensed fractions is less than a threshold temperature corresponding to the condensation temperature for at least one of the gas fractions in the pipe 2, the non-condensed fractions will be capable of effecting condensation of this fraction. If the temperature thus falls below this threshold temperature, an impulse is emitted by the temperature sensor 44 for opening of the shut-off valve 42, whereupon gas can flow to the first passage 32 of the second heat exchanger via the pipe 40.
  • the fraction or fractions of the gas which are thereby supplied to the second heat exchanger 30 and there condensed are passed to the collecting tank 24 via the pipe 48.
  • the use of the first coolant has thereby been optimised. Since the period for the loading of oil only constitutes a small part of the time during which the ship is in operation, a cooling plant which is only employed during loading will in the first place only be used for a short time during each voyage. If the cooling plant's refrigerating machine 18 hereby has the same output as the output which is necessary during the above- described condensation during oil loading, i.e.
  • the refrigerating machine 18 can remove a thermal quantity per time unit from the coolant corresponding to the thermal quantity which the coolant absorbs from the gas, in the second place the refrigerating machine 18 needs to be used only during loading, while it can be stopped during the greater part of the voyage, which is uneconomical.
  • the cooling plant 14 therefore comprises the storage tank 20 which has a capacity which is at least great enough to enable it to contain the amount of coolant which is necessary for condensation of the gas during loading.
  • the return tank 22 has a similar capacity.
  • the cooling machine 18, however, has an output which is small enough to enable it to run continuously during the entire voyage, but nevertheless great enough to enable it to have filled the storage tank 20 before loading with at least the quantity of cooling fluid which is consumed during loading.
  • the cooling machine 18 can therefore be very small. Thus the production, operating and maintenance costs can also be small.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lubricants (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

L'invention concerne une centrale de refroidissement dotée d'une machine de réfigération (18), dans laquelle un agent de refroidissement est réfrigéré et envoyé à un consommateur et renvoyé ensuite à ladite machine de réfrigération (18). Ladite centrale de refroidissement (14) selon l'invention comporte une citerne (20) pour collecter l'agent de réfrigération ayant été réfrigéré dans la machine de réfrigération (18), un réservoir de retour (22) pour collecter l'agent de réfrigération réchauffé provenant du consommateur.
EP97918438A 1996-05-06 1997-05-06 Dispositif de refroidissement de fractions de petrole pendant le transport du petrole dans des petroliers Withdrawn EP0906548A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO961825A NO301443B1 (no) 1996-05-06 1996-05-06 Kjöleanordning for kondensasjon av oljefraksjoner under transport av olje på tankskip
NO961825 1996-05-06
PCT/NO1997/000118 WO1997042454A1 (fr) 1996-05-06 1997-05-06 Dispositif de refroidissement de fractions de petrole pendant le transport du petrole dans des petroliers

Publications (1)

Publication Number Publication Date
EP0906548A1 true EP0906548A1 (fr) 1999-04-07

Family

ID=19899345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97918438A Withdrawn EP0906548A1 (fr) 1996-05-06 1997-05-06 Dispositif de refroidissement de fractions de petrole pendant le transport du petrole dans des petroliers

Country Status (6)

Country Link
EP (1) EP0906548A1 (fr)
JP (1) JP2000509805A (fr)
KR (1) KR20000010938A (fr)
AU (1) AU706988B2 (fr)
NO (1) NO301443B1 (fr)
WO (1) WO1997042454A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1976879A (en) * 1934-03-28 1934-10-16 Carbondale Machine Company Refrigerant storage means
US3721104A (en) * 1969-01-22 1973-03-20 R Adler Marine refrigeration, freezing and cool storage systems
GB2069119B (en) * 1980-02-13 1983-09-21 Petrocarbon Dev Ltd Refrigeration process
US4356708A (en) * 1981-02-19 1982-11-02 Horton Cleaveland F Marine refrigeration system
US4519216A (en) * 1982-12-23 1985-05-28 Felicetta Joseph A Self contained indirect refrigeration system
GB8505930D0 (en) * 1985-03-07 1985-04-11 Ncl Consulting Engineers Gas handling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9742454A1 *

Also Published As

Publication number Publication date
JP2000509805A (ja) 2000-08-02
NO961825D0 (no) 1996-05-06
AU706988B2 (en) 1999-07-01
NO961825A (no) 1997-10-27
NO301443B1 (no) 1997-10-27
AU2654397A (en) 1997-11-26
WO1997042454A1 (fr) 1997-11-13
KR20000010938A (ko) 2000-02-25

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