DK1255955T3 - Fremgangsmåde og indretning til fordråbning af en produktgas i lille målestok - Google Patents

Fremgangsmåde og indretning til fordråbning af en produktgas i lille målestok

Info

Publication number
DK1255955T3
DK1255955T3 DK01908478T DK01908478T DK1255955T3 DK 1255955 T3 DK1255955 T3 DK 1255955T3 DK 01908478 T DK01908478 T DK 01908478T DK 01908478 T DK01908478 T DK 01908478T DK 1255955 T3 DK1255955 T3 DK 1255955T3
Authority
DK
Denmark
Prior art keywords
droplet
compressors
product gas
oil
small scale
Prior art date
Application number
DK01908478T
Other languages
English (en)
Inventor
Einar Brendeng
Bengt Olav Neeraas
Original Assignee
Sinvent 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 Sinvent As filed Critical Sinvent As
Application granted granted Critical
Publication of DK1255955T3 publication Critical patent/DK1255955T3/da

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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/0015—Nitrogen
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
    • F25J1/0052—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream
    • F25J1/0055—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream originating from an incorporated cascade
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
    • F25J1/0212—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a single flow MCR cycle
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0262—Details of the cold heat exchange system
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0262—Details of the cold heat exchange system
    • F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
    • F25J1/0265—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams comprising cores associated exclusively with the cooling of a refrigerant stream, e.g. for auto-refrigeration or economizer
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0276—Laboratory or other miniature devices
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/60—Expansion by ejector or injector, e.g. "Gasstrahlpumpe", "venturi mixing", "jet pumps"
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/32—Details on header or distribution passages of heat exchangers, e.g. of reboiler-condenser or plate heat exchangers
    • 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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/44—Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
DK01908478T 2000-02-10 2001-02-09 Fremgangsmåde og indretning til fordråbning af en produktgas i lille målestok DK1255955T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20000660A NO312736B1 (no) 2000-02-10 2000-02-10 Framgangsmåte og anlegg for kjöling og eventuelt flytendegjöring av en produktgass
PCT/NO2001/000048 WO2001059377A1 (en) 2000-02-10 2001-02-09 Method and device for small scale liquefaction of a product gas

Publications (1)

Publication Number Publication Date
DK1255955T3 true DK1255955T3 (da) 2007-03-19

Family

ID=19910718

Family Applications (1)

Application Number Title Priority Date Filing Date
DK01908478T DK1255955T3 (da) 2000-02-10 2001-02-09 Fremgangsmåde og indretning til fordråbning af en produktgas i lille målestok

Country Status (10)

Country Link
US (1) US6751984B2 (da)
EP (1) EP1255955B1 (da)
AT (1) ATE345477T1 (da)
AU (1) AU2001236219A1 (da)
DE (1) DE60124506T2 (da)
DK (1) DK1255955T3 (da)
ES (1) ES2280341T3 (da)
NO (1) NO312736B1 (da)
PT (1) PT1255955E (da)
WO (1) WO2001059377A1 (da)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2820052B1 (fr) * 2001-01-30 2003-11-28 Armines Ass Pour La Rech Et Le Procede d'extraction du dioxyde de carbone par anti-sublimation en vue de son stockage
FR2851936B1 (fr) * 2003-03-04 2006-12-08 Procede d'extraction du dioxyde de carbone et du dioxyde de soufre par anti-sublimation en vue de leur stockage
US7165422B2 (en) * 2004-11-08 2007-01-23 Mmr Technologies, Inc. Small-scale gas liquefier
NO328205B1 (no) * 2006-11-01 2010-01-11 Sinvent As Fremgangsmåte og prosessanlegg for kondensering av gass
FR2920866A1 (fr) * 2007-09-12 2009-03-13 Air Liquide Ligne d'echange principale et appareil de separation d'air par distillation cryogenique incorporant une telle ligne d'echange
US8020406B2 (en) * 2007-11-05 2011-09-20 David Vandor Method and system for the small-scale production of liquified natural gas (LNG) from low-pressure gas
EP2336693A3 (en) * 2007-12-07 2015-07-01 Dresser-Rand Company Compressor system and method for gas liquefaction system
DE102009015411A1 (de) 2009-03-27 2010-10-07 Marine-Service Gmbh Verfahren und Einrichtung zum Betrieb einer Antriebsmaschine für ein Schiff zum Transport von Flüssiggas
FR2944096B1 (fr) * 2009-04-07 2012-04-27 Ass Pour La Rech Et Le Dev De Methodes Et Processus Indutriels Armines Procede et systeme frigorifique pour la recuperation de la froideur du methane par des fluides frigorigenes.
DE102009059061A1 (de) 2009-12-14 2013-10-02 Jürgen von der Ohe Verfahren und Vorrichtung zur sicheren Bereitstellung und Kontrolle von CO2-flüssig in Kleinmengen
CA2724938C (en) 2009-12-18 2017-01-24 Fluor Technologies Corporation Modular processing facility
FR2957663A3 (fr) * 2010-07-08 2011-09-23 Air Liquide Procede et appareil d'echange thermique d'un fluide biphasique
EP2702311B1 (en) 2011-04-19 2021-06-09 Babcock IP Management (Number One) Limited Method of cooling boil off gas and an apparatus therefor
CA2855383C (en) 2014-06-27 2015-06-23 Rtj Technologies Inc. Method and arrangement for producing liquefied methane gas (lmg) from various gas sources
CA2903679C (en) 2015-09-11 2016-08-16 Charles Tremblay Method and system to control the methane mass flow rate for the production of liquefied methane gas (lmg)
US10788259B1 (en) 2015-12-04 2020-09-29 Chester Lng, Llc Modular, mobile and scalable LNG plant
US20180220552A1 (en) * 2017-01-31 2018-08-02 Fluor Technologies Corporation Modular processing facility with distributed cooling systems
RU2640050C1 (ru) * 2017-02-02 2017-12-26 Публичное акционерное общество криогенного машиностроения (ПАО "Криогенмаш") Способ удаления тяжелых углеводородов при сжижении природного газа и устройство для его осуществления
CA3021456A1 (en) 2017-10-20 2019-04-20 Fluor Technologies Corporation Integrated configuration for a steam assisted gravity drainage central processing facility
JP6957026B2 (ja) * 2018-05-31 2021-11-02 伸和コントロールズ株式会社 冷凍装置及び液体温調装置
GB201912126D0 (en) * 2019-08-23 2019-10-09 Babcock Ip Man Number One Limited Method of cooling boil-off gas and apparatus therefor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364685A (en) 1965-03-31 1968-01-23 Cie Francaise D Etudes Et De C Method and apparatus for the cooling and low temperature liquefaction of gaseous mixtures
JPS5440512B1 (da) * 1968-11-04 1979-12-04
FR2280041A1 (fr) * 1974-05-31 1976-02-20 Teal Technip Liquefaction Gaz Procede et installation pour le refroidissement d'un melange gazeux
DE2628007A1 (de) * 1976-06-23 1978-01-05 Heinrich Krieger Verfahren und anlage zur erzeugung von kaelte mit wenigstens einem inkorporierten kaskadenkreislauf
DE2631134A1 (de) * 1976-07-10 1978-01-19 Linde Ag Verfahren zur verfluessigung von luft oder lufthauptbestandteilen
JPH06159928A (ja) * 1992-11-20 1994-06-07 Chiyoda Corp 天然ガス液化方法

Also Published As

Publication number Publication date
US6751984B2 (en) 2004-06-22
US20030019240A1 (en) 2003-01-30
NO312736B1 (no) 2002-06-24
DE60124506T2 (de) 2007-09-20
NO20000660L (no) 2001-08-13
DE60124506D1 (de) 2006-12-28
AU2001236219A1 (en) 2001-08-20
ATE345477T1 (de) 2006-12-15
NO20000660D0 (no) 2000-02-10
EP1255955A1 (en) 2002-11-13
WO2001059377A1 (en) 2001-08-16
ES2280341T3 (es) 2007-09-16
PT1255955E (pt) 2007-01-31
EP1255955B1 (en) 2006-11-15

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