EP0095792B1 - Procédé pour la séparation d'un liquide à plusieurs composants - Google Patents

Procédé pour la séparation d'un liquide à plusieurs composants Download PDF

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Publication number
EP0095792B1
EP0095792B1 EP83200509A EP83200509A EP0095792B1 EP 0095792 B1 EP0095792 B1 EP 0095792B1 EP 83200509 A EP83200509 A EP 83200509A EP 83200509 A EP83200509 A EP 83200509A EP 0095792 B1 EP0095792 B1 EP 0095792B1
Authority
EP
European Patent Office
Prior art keywords
column
steam
fraction
pressure
liquid
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.)
Expired
Application number
EP83200509A
Other languages
German (de)
English (en)
Other versions
EP0095792A3 (en
EP0095792A2 (fr
Inventor
Pieter Van Der Heyden
Alfred Louis Van Kleef
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of EP0095792A2 publication Critical patent/EP0095792A2/fr
Publication of EP0095792A3 publication Critical patent/EP0095792A3/en
Application granted granted Critical
Publication of EP0095792B1 publication Critical patent/EP0095792B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G7/00—Distillation of hydrocarbon oils

Definitions

  • the flash tower 5 shown in the drawing is provided with 4 product side withdrawal lines 20.
  • the remaining vapour if any is withdrawn over the top of the flash tower 5 via line 7 by the action of the steam ejector system 6.
  • the driving steam from the steam ejector system 6 is directly passed together with vapour, if any, from the flash tower 5 via line 21 into a second column 22, hereinafter called stripping tower, which is maintained at a higher sub-atmospheric pressure than the pressure in the flash tower 5.
  • the steam passed over the top of the stripping tower 22 is introduced into a plurality of condensers 30, one of which is shown in the drawing, for condensing the steam at substantially atmospheric pressure.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (7)

1. Procédé pour la séparation d'un liquide à plusieurs composants, comprenant le chauffage du liquide à plusieurs composants de façon qu'on obtienne un mélange d'une phase liquide et d'une phase vapeur, le passage du mélange dans une partie inférieure d'une première colonne tandis qu'on maintient dans la première colonne une pression inférieure à la pression atmosphérique en utilisant un système d'éjecteur à vapeur d'eau, les composants du mélange étant séparés pour donner au moins une fraction de distillat et une fraction de queue et l'évacuation de ces fractions de la colonne, caractérisé en ce que le procédé comprend en outre le passage de la fraction de queue à une seconde colonne tandis qu'on maintient dans la seconde colonne une pression supérieure à la pression régnant dans la première colonne, et la mise en contact de la fraction de queue avec de la vapeur d'eau dans la seconde colonne de façon qu'on obtienne au moins une fraction de distillat lourd et une fraction résiduelle, où la vapeur d'eau d'entraînement du système d'éjecteur à vapeur d'eau est utilisée dans la seconde colonne pour mise en contact avec la fraction de queue.
2. Procédé selon la revendication 1, dans lequel la vapeur d'eau provenant du système d'éjecteur à vapeur d'eau est passée dans une région inférieure de la seconde colonne et la fraction de queue est passée dans une région supérieure de la seconde colonne de manière à causer des écoulements à contre-courant de la vapeur d'eau et de la fraction de queue.
3. Procédé selon la revendication 1 ou 2, dans lequel la pression dans la seconde colonne est maintenue au-dessous de la pression atmosphérique.
4. Procédé selon l'une quelconque des revendications 1-3, dans lequel une partie de la fraction résiduelle provenant de la seconde colonne est après refroidissement réintroduite dans ladite colonne à un niveau plus élevé que le niveau de soutirage.
5. Procédé selon l'une quelconque des revendications 1-4, dans lequel la fraction de queue est chauffée avant le passage de cette fraction dans la seconde colonne.
6. Procédé selon la revendication 5, dans lequel la fraction de queue est chauffée avant le passage de cette fraction dans la seconde colonne à une température égale à son point initial d'ébullition ou proche de ce point.
7. Procédé selon l'une quelconque des revendications 1-6, dans lequel du liquide refroidi est introduit dans la seconde colonne pour séparer la vapeur formée de la vapeur d'eau, avant l'évacuation de la vapeur d'eau de la seconde colonne.
EP83200509A 1982-05-28 1983-04-12 Procédé pour la séparation d'un liquide à plusieurs composants Expired EP0095792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8215707 1982-05-28
GB8215707 1982-05-28

Publications (3)

Publication Number Publication Date
EP0095792A2 EP0095792A2 (fr) 1983-12-07
EP0095792A3 EP0095792A3 (en) 1985-10-02
EP0095792B1 true EP0095792B1 (fr) 1988-01-13

Family

ID=10530713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200509A Expired EP0095792B1 (fr) 1982-05-28 1983-04-12 Procédé pour la séparation d'un liquide à plusieurs composants

Country Status (6)

Country Link
EP (1) EP0095792B1 (fr)
JP (1) JPS58214302A (fr)
AU (1) AU555741B2 (fr)
CA (1) CA1197806A (fr)
DE (1) DE3375304D1 (fr)
ZA (1) ZA833819B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8903011D0 (en) * 1989-02-10 1989-03-30 Shell Int Research Vacuum distillation process
CH684057A5 (de) * 1992-11-30 1994-07-15 Buss Ag Verfahren zum Weiterverarbeiten des Vakuumrückstandes in einer Rohölraffinerie.
DE10037774A1 (de) * 2000-08-03 2002-02-14 Bayer Ag Verfahren und Vorrichtung zur Gewinnung organischer Substanzen aus einem diese Substanzen enthaltenden Gasgemisch
IN2014DN05814A (fr) 2012-01-17 2015-05-15 Shell Int Research

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US204707A (en) * 1878-06-11 Improvement in vehicle-springs
US2092528A (en) * 1927-07-28 1937-09-07 Lummus Co Method of and apparatus for distilling petroleum mixtures
US3301778A (en) * 1964-06-15 1967-01-31 Phillips Petroleum Co Fractional distillation
US4415443A (en) * 1981-07-10 1983-11-15 Exxon Research And Engineering Co. Distillation process

Also Published As

Publication number Publication date
EP0095792A3 (en) 1985-10-02
CA1197806A (fr) 1985-12-10
DE3375304D1 (en) 1988-02-18
AU1500383A (en) 1983-12-01
ZA833819B (en) 1984-02-29
EP0095792A2 (fr) 1983-12-07
JPS58214302A (ja) 1983-12-13
AU555741B2 (en) 1986-10-09
JPH0512001B2 (fr) 1993-02-17

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