FR2395974A1 - Benzene or toluene separation from mixts. - by azeotropic-extractive distillation using DMF as solvent giving reduced solvent loss - Google Patents

Benzene or toluene separation from mixts. - by azeotropic-extractive distillation using DMF as solvent giving reduced solvent loss

Info

Publication number
FR2395974A1
FR2395974A1 FR7720242A FR7720242A FR2395974A1 FR 2395974 A1 FR2395974 A1 FR 2395974A1 FR 7720242 A FR7720242 A FR 7720242A FR 7720242 A FR7720242 A FR 7720242A FR 2395974 A1 FR2395974 A1 FR 2395974A1
Authority
FR
France
Prior art keywords
solvent
distn
zone
mixts
benzene
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
FR7720242A
Other languages
French (fr)
Other versions
FR2395974B1 (en
Inventor
Paul Mikitenko
Lionel Asselineau
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Priority to FR7720242A priority Critical patent/FR2395974A1/en
Priority to NL7802444A priority patent/NL7802444A/en
Priority to DD78203994A priority patent/DD133937A1/en
Priority to IT20931/78A priority patent/IT1094190B/en
Priority to JP2714178A priority patent/JPS53112820A/en
Priority to DE19782809985 priority patent/DE2809985A1/en
Priority to CA000298511A priority patent/CA1118706A/en
Priority to GB9193/78A priority patent/GB1556003A/en
Publication of FR2395974A1 publication Critical patent/FR2395974A1/en
Application granted granted Critical
Publication of FR2395974B1 publication Critical patent/FR2395974B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
    • C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The separation of benzene and/or toluene from mixts. with >=1 cycloalkane or paraffin hydrocarbon comprises extractive distn. in a distn. zone in presence of an extn. solvent of an aliphatic N-alkylamide with the aim of reducing the solvent losses entrained in the distillate. Water is introduced into the section of the distn. zone between the point of injecting the extn. solvent and the head of the distn zone in a quantity and under conditions such that it is evaporated within that part of the distn. zone without diluting the solvent. The vapours given off at the head are condensed and the condensate sepd. into two liquid phases, the first consisting of the satd. hydrocarbons, and the second mostly condensed water vapour. There is no solvent loss at the head of the distillation column and automatic control of water flow in all working conditions is obtd.
FR7720242A 1977-03-08 1977-06-28 Benzene or toluene separation from mixts. - by azeotropic-extractive distillation using DMF as solvent giving reduced solvent loss Granted FR2395974A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7720242A FR2395974A1 (en) 1977-06-28 1977-06-28 Benzene or toluene separation from mixts. - by azeotropic-extractive distillation using DMF as solvent giving reduced solvent loss
NL7802444A NL7802444A (en) 1977-03-08 1978-03-06 PROCESS FOR THE PURIFICATION OF BENZENE AND TOLUA BY EXTRACTIVE AZEOTROPE DISTILLATION.
DD78203994A DD133937A1 (en) 1977-03-08 1978-03-06 METHOD FOR CLEANING BENZENE AND TOLUOL BY AZEOTROPE EXTRACTIVE DISTILLATION
IT20931/78A IT1094190B (en) 1977-03-08 1978-03-07 BENZENE AND TOLUENE PURIFICATION PROCESS FOR AZEOTROPIC-EXTRACTIVE DISTILLATION
JP2714178A JPS53112820A (en) 1977-03-08 1978-03-08 Purifying method of benzene and toluene with extracting distillation
DE19782809985 DE2809985A1 (en) 1977-03-08 1978-03-08 METHOD OF PURIFYING BENZENE AND TOLUENE BY AZEOTROP-EXTRACTIVE DISTILLATION
CA000298511A CA1118706A (en) 1977-03-08 1978-03-08 Purification process for benzene and toluene through extractive azeotropic distillation
GB9193/78A GB1556003A (en) 1977-03-08 1978-03-08 Separating benzene and or toluene from mixtures containing saturated hydrocarbons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7720242A FR2395974A1 (en) 1977-06-28 1977-06-28 Benzene or toluene separation from mixts. - by azeotropic-extractive distillation using DMF as solvent giving reduced solvent loss

Publications (2)

Publication Number Publication Date
FR2395974A1 true FR2395974A1 (en) 1979-01-26
FR2395974B1 FR2395974B1 (en) 1980-01-18

Family

ID=9192833

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720242A Granted FR2395974A1 (en) 1977-03-08 1977-06-28 Benzene or toluene separation from mixts. - by azeotropic-extractive distillation using DMF as solvent giving reduced solvent loss

Country Status (1)

Country Link
FR (1) FR2395974A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807530A (en) * 1994-05-20 1998-09-15 Conamara Technologies Inc. Process for burning of sulfur
US7674449B2 (en) 2005-06-02 2010-03-09 Mecs, Inc. Process and apparatus for the combustion of a sulfur-containing liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807530A (en) * 1994-05-20 1998-09-15 Conamara Technologies Inc. Process for burning of sulfur
US7674449B2 (en) 2005-06-02 2010-03-09 Mecs, Inc. Process and apparatus for the combustion of a sulfur-containing liquid

Also Published As

Publication number Publication date
FR2395974B1 (en) 1980-01-18

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Legal Events

Date Code Title Description
ST Notification of lapse