CA2858152C - Procede et appareil pour retirer l'azote d'une composition d'hydrocarbures cryogeniques - Google Patents

Procede et appareil pour retirer l'azote d'une composition d'hydrocarbures cryogeniques Download PDF

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CA2858152C
CA2858152C CA2858152A CA2858152A CA2858152C CA 2858152 C CA2858152 C CA 2858152C CA 2858152 A CA2858152 A CA 2858152A CA 2858152 A CA2858152 A CA 2858152A CA 2858152 C CA2858152 C CA 2858152C
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vapour
nitrogen
stripping
liquid
stripper column
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CA2858152A1 (fr
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Alexandre M. C. R. Santos
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Shell Internationale Research Maatschappij BV
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Shell Internationale Research Maatschappij BV
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    • 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
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    • 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
    • F25J1/0032—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 the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/004—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 the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
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    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/90—Processes or apparatus involving steps for recycling of process streams the recycled stream being boil-off gas from storage
    • 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
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

De l'azote est retiré d'une composition d'hydrocarbures cryogéniques. Au moins une première partie de la composition d'hydrocarbures cryogéniques est introduite dans une colonne de strippage d'azote en tant que premier courant de strippage d'azote. Un liquide qui a subi un strippage d'azote est soutiré de la colonne de strippage d'azote. Un courant de produit d'hydrocarbures liquides et une vapeur de traitement sont produits comprenant au moins une étape de dépressurisation du liquide qui a subi un strippage d'azote à une pression éclair. La vapeur de traitement est comprimée, et séparée de manière sélective en une partie de strippage et une partie de non-strippage. Un courant de vapeur de strippage comprenant au moins la partie de strippage est amené à passer à travers la colonne de strippage d'azote. Une fraction de vapeur est déchargée en tant que gaz d'échappement, comprenant une fraction de décharge de la vapeur de tête provenant de la colonne de strippage d'azote et comprenant au moins la partie de dérivation provenant de la partie de non-strippage de la vapeur compressée, qui contourne une section de strippage positionnée dans la colonne de strippage d'azote.
CA2858152A 2011-12-12 2012-12-10 Procede et appareil pour retirer l'azote d'une composition d'hydrocarbures cryogeniques Active CA2858152C (fr)

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EP11192922 2011-12-12
PCT/EP2012/074957 WO2013087569A2 (fr) 2011-12-12 2012-12-10 Procédé et appareil pour retirer l'azote d'une composition d'hydrocarbures cryogéniques

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EP2791601A2 (fr) 2014-10-22
AU2012350742B2 (en) 2015-08-20
JP2015501917A (ja) 2015-01-19
EP2791601B1 (fr) 2020-06-24
CA2858152A1 (fr) 2013-06-20
MY172968A (en) 2019-12-16
KR20140103144A (ko) 2014-08-25
WO2013087569A2 (fr) 2013-06-20
WO2013087569A3 (fr) 2014-05-01
RU2014128669A (ru) 2016-02-10
AU2012350742A1 (en) 2014-05-22
CN103988035A (zh) 2014-08-13
RU2607198C2 (ru) 2017-01-10

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