MY178855A - Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition - Google Patents

Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition

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Publication number
MY178855A
MY178855A MYPI2014701218A MYPI2014701218A MY178855A MY 178855 A MY178855 A MY 178855A MY PI2014701218 A MYPI2014701218 A MY PI2014701218A MY PI2014701218 A MYPI2014701218 A MY PI2014701218A MY 178855 A MY178855 A MY 178855A
Authority
MY
Malaysia
Prior art keywords
nitrogen
liquid
hydrocarbon composition
stripped liquid
cryogenic hydrocarbon
Prior art date
Application number
MYPI2014701218A
Inventor
Alexandre M C R Santos
Original Assignee
Shell Int Research
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 Shell Int Research filed Critical Shell Int Research
Publication of MY178855A publication Critical patent/MY178855A/en

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    • 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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    • 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"
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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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream

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  • 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

Nitrogen is removed from a cryogenic hydrocarbon composition. The cryogenic hydrocarbon composition is split into a first portion and a second portion having the same composition and phase as the first portion. The first portion is fed to a nitrogen stripper column (20), operating at a stripping pressure, from which a nitrogen-stripped liquid is drawn. The second portion is fed into the nitrogen-stripped liquid or in a liquid hydrocarbon product stream or in a process vapour which are produced from the nitrogen-stripped liquid involving at least a step of depressurizing the nitrogen-stripped liquid to a flash pressure that is lower than the stripping pressure. The second portion bypasses the nitrogen stripper column (20) between the stream splitting and the feeding of the second portion into the nitrogen-stripped liquid or the liquid hydrocarbon product stream or the process vapour.
MYPI2014701218A 2011-12-12 2012-12-10 Method and apparatus for removing nitrogen from a cryogenic hydrocarbon composition MY178855A (en)

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AU2012350743A1 (en) 2014-05-22
WO2013087570A3 (en) 2014-05-01
RU2622212C2 (en) 2017-06-13
WO2013087570A2 (en) 2013-06-20
AU2012350743B2 (en) 2015-08-27
RU2014128650A (en) 2016-02-10
CN103998882A (en) 2014-08-20
CN103998882B (en) 2016-04-13
CA2858756A1 (en) 2013-06-20

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