GB609871A - Improvements in or relating to a process for drying alcohols and ketones - Google Patents

Improvements in or relating to a process for drying alcohols and ketones

Info

Publication number
GB609871A
GB609871A GB870746A GB870746A GB609871A GB 609871 A GB609871 A GB 609871A GB 870746 A GB870746 A GB 870746A GB 870746 A GB870746 A GB 870746A GB 609871 A GB609871 A GB 609871A
Authority
GB
United Kingdom
Prior art keywords
ketone
alcohol
azeotrope
water
aqueous phase
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
GB870746A
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.)
GEORGE HILTON TWIGG
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
GEORGE HILTON TWIGG
Distillers Co Yeast Ltd
Distillers Co 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 GEORGE HILTON TWIGG, Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical GEORGE HILTON TWIGG
Priority to GB870746A priority Critical patent/GB609871A/en
Publication of GB609871A publication Critical patent/GB609871A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/80—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B61/00—Other general methods
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
    • C07C45/84—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by azeotropic distillation

Landscapes

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

Abstract

Aqueous alcohols and ketones which are only partially miscible with water and which form azeotropes therewith, e.g. butanol, amyl alcohol, dimethyl ethyl carbinol, and methylethylketone, are dehydrated by adding an alkyl-substituted aromatic hydrocarbon, miscible with the alcohol or ketone and having a boiling point at least 40 DEG C. above it but which will not form an azeotrope therewith, in an amount at least sufficient to cause separation of the mixture into two phases, separating the phases and subjecting the less aqueous phase to fractional distillation to produce a fraction consisting of the water-azeotrope of the alcohol or ketone, a higher boiling fraction consisting of the anhydrous alcohol or ketone, and a residue comprising the hydrocarbon. Suitable hydrocarbons are the xylenes, ethylbenzene, trimethylbenzenes, propyl and isopropybenzene, and diethylbenzenes. The aqueous phase may be subjected to distillation separately, and the water azeotrope of the alcohol or ketone thus obtained may be added to a fresh batch of starting material. The process may be carried out batchwise or in a continuous manner. In the latter case, three stills are used: one for distilling out the water azeotrope from the "oily" phase, another for separating anhydrous alcohol or ketone from hydrocarbon, and the third for the distillation of the aqueous phase. Specification 560,169 is referred to.
GB870746A 1946-03-20 1946-03-20 Improvements in or relating to a process for drying alcohols and ketones Expired GB609871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB870746A GB609871A (en) 1946-03-20 1946-03-20 Improvements in or relating to a process for drying alcohols and ketones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB870746A GB609871A (en) 1946-03-20 1946-03-20 Improvements in or relating to a process for drying alcohols and ketones

Publications (1)

Publication Number Publication Date
GB609871A true GB609871A (en) 1948-10-07

Family

ID=9857691

Family Applications (1)

Application Number Title Priority Date Filing Date
GB870746A Expired GB609871A (en) 1946-03-20 1946-03-20 Improvements in or relating to a process for drying alcohols and ketones

Country Status (1)

Country Link
GB (1) GB609871A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542752A (en) * 1949-05-27 1951-02-20 Shell Dev Dehydration of acrolein by stratification and distillation
EP0351190A2 (en) * 1986-11-26 1990-01-17 Catalytica Inc. Process for obtaining substantially aldehyde-free ketone products

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542752A (en) * 1949-05-27 1951-02-20 Shell Dev Dehydration of acrolein by stratification and distillation
EP0351190A2 (en) * 1986-11-26 1990-01-17 Catalytica Inc. Process for obtaining substantially aldehyde-free ketone products
EP0351190A3 (en) * 1986-11-26 1991-03-27 Catalytica Inc. Process for obtaining substantially aldehyde-free ketone products

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