FR2187377A1 - Extractive distillation - giving high yield of aromatic hydrocarbons - Google Patents

Extractive distillation - giving high yield of aromatic hydrocarbons

Info

Publication number
FR2187377A1
FR2187377A1 FR7220586A FR7220586A FR2187377A1 FR 2187377 A1 FR2187377 A1 FR 2187377A1 FR 7220586 A FR7220586 A FR 7220586A FR 7220586 A FR7220586 A FR 7220586A FR 2187377 A1 FR2187377 A1 FR 2187377A1
Authority
FR
France
Prior art keywords
extractive distillation
aromatic hydrocarbons
solvent
aromatic
stream
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.)
Granted
Application number
FR7220586A
Other languages
French (fr)
Other versions
FR2187377B1 (en
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.)
Universal Oil Products Co
Original Assignee
Universal Oil Products Co
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
Priority to DE19722225994 priority Critical patent/DE2225994C3/en
Priority claimed from DE19722225994 external-priority patent/DE2225994C3/en
Application filed by Universal Oil Products Co filed Critical Universal Oil Products Co
Priority to FR7220586A priority patent/FR2187377A1/en
Publication of FR2187377A1 publication Critical patent/FR2187377A1/en
Application granted granted Critical
Publication of FR2187377B1 publication Critical patent/FR2187377B1/fr
Granted legal-status Critical Current

Links

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
    • C10G7/08—Azeotropic or extractive distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • B01D3/40—Extractive distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

An extractive distillation method for separating aromatic hydrocarbons from a mixture containing also non-aromatic hydrocarbons consists of combining a hot solvent with the mixt. in an extractive distillation zone, thus producing an aromatic-rich extract. stream and a non-aromatic raffinate top fraction. Water is stripped from a solvent-Contg. dild. aq. stream in a pressurised stripper zone. The quantity of aromatic hydrocarbons removed in the non-aromatic top fraction is controlled as follows: (a) at least a portion of the hot solvent is passed through a reheater to the water stripper zone, where at least a portion of the diltd. solvent-contg. aq. stream is evapd. and the hot solvent is cooled; (b) at least a portion of this cooled solvent is recycled to the upper part of the extractive distillation column.
FR7220586A 1972-05-29 1972-06-08 Extractive distillation - giving high yield of aromatic hydrocarbons Granted FR2187377A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19722225994 DE2225994C3 (en) 1972-05-29 Extractive distillation process for the separation of aromatic hydrocarbons from mixtures with non-aromatics
FR7220586A FR2187377A1 (en) 1972-05-29 1972-06-08 Extractive distillation - giving high yield of aromatic hydrocarbons

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722225994 DE2225994C3 (en) 1972-05-29 Extractive distillation process for the separation of aromatic hydrocarbons from mixtures with non-aromatics
FR7220586A FR2187377A1 (en) 1972-05-29 1972-06-08 Extractive distillation - giving high yield of aromatic hydrocarbons

Publications (2)

Publication Number Publication Date
FR2187377A1 true FR2187377A1 (en) 1974-01-18
FR2187377B1 FR2187377B1 (en) 1976-01-16

Family

ID=25763335

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7220586A Granted FR2187377A1 (en) 1972-05-29 1972-06-08 Extractive distillation - giving high yield of aromatic hydrocarbons

Country Status (1)

Country Link
FR (1) FR2187377A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
FR2187377B1 (en) 1976-01-16
DE2225994B2 (en) 1977-05-18
DE2225994A1 (en) 1973-12-13

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Legal Events

Date Code Title Description
ST Notification of lapse