GB662608A - Purifying propyl alcohols by azeotropic distillation - Google Patents

Purifying propyl alcohols by azeotropic distillation

Info

Publication number
GB662608A
GB662608A GB24173/49A GB2417349A GB662608A GB 662608 A GB662608 A GB 662608A GB 24173/49 A GB24173/49 A GB 24173/49A GB 2417349 A GB2417349 A GB 2417349A GB 662608 A GB662608 A GB 662608A
Authority
GB
United Kingdom
Prior art keywords
cyclohexane
distillate
water
subjected
azeotropic distillation
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
GB24173/49A
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Publication of GB662608A publication Critical patent/GB662608A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C07C29/82—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by azeotropic distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A mixture of lower aliphatic alcohols consisting mainly of isopropyl alcohol and some n-propyl alcohol, and containing acetals and carbonyl compounds as impurities, is subjected to azeotropic distillation together with water and cyclohexane to produce as distillate ternary azeotropic mixtures of the alcohols, cyclohexane and water, substantially free from said impurities; the distillate is condensed and cyclohexane is separated by decantation from the condensate. The given mixture is preferably subjected to a preliminary distillation to separate a fraction boiling from about 75 to 85 DEG C. which is then subjected to the azeotropic distillation. Water is preferably added to the condensate before separating the cyclohexane. The aqueous solution remaining may then be fractionally distilled to separate the aqueous azeotropes of isopropyl and n-propyl alcohols, as distillate. The process is particularly applicable to the mixture obtained by hydrogenation of a fraction containing propionaldehyde, acrolein, methyl, acetone, allyl alcohol, iso-and n-propanols, iso- and n-butanols, isolated from the products of the partial oxidation of butane or mixtures of propane and butane.
GB24173/49A 1948-09-22 1949-09-20 Purifying propyl alcohols by azeotropic distillation Expired GB662608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US662608XA 1948-09-22 1948-09-22

Publications (1)

Publication Number Publication Date
GB662608A true GB662608A (en) 1951-12-05

Family

ID=22068342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24173/49A Expired GB662608A (en) 1948-09-22 1949-09-20 Purifying propyl alcohols by azeotropic distillation

Country Status (1)

Country Link
GB (1) GB662608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495231A1 (en) * 2011-03-01 2012-09-05 Celanese Chemicals Europe GmbH Process for producing highly purified n-propanol by azeotropic distillation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495231A1 (en) * 2011-03-01 2012-09-05 Celanese Chemicals Europe GmbH Process for producing highly purified n-propanol by azeotropic distillation
WO2012116817A3 (en) * 2011-03-01 2012-10-26 Celanese Chemicals Europe Gmbh Process for producing highly purified n-propanol

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