GB740716A - Improvements in or relating to process for separation of close-boiling liquid pairs by distillation - Google Patents

Improvements in or relating to process for separation of close-boiling liquid pairs by distillation

Info

Publication number
GB740716A
GB740716A GB12879/53A GB1287953A GB740716A GB 740716 A GB740716 A GB 740716A GB 12879/53 A GB12879/53 A GB 12879/53A GB 1287953 A GB1287953 A GB 1287953A GB 740716 A GB740716 A GB 740716A
Authority
GB
United Kingdom
Prior art keywords
butanol
ketone
alcohol
propyl
methyl
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
GB12879/53A
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.)
Stanolind Oil and Gas Co
Original Assignee
Stanolind Oil and Gas 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
Application filed by Stanolind Oil and Gas Co filed Critical Stanolind Oil and Gas Co
Publication of GB740716A publication Critical patent/GB740716A/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
    • C07C45/81—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
    • 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
    • C07C45/83—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by extractive distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Landscapes

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

Abstract

A pair of oxygen-containing organic compounds each having 2-8 carbon atoms and which either form an azeotropic mixture or boil so close as to be difficult to separate by conventional methods are separated by fractionally distilling them and contacting the ascending vapours with a descending stream of an aqueous solution of a salt of an aliphatic monocarboxylic acid containing 5-12 carbon atoms whereby the relative volatility of said liquid pair is increased. The liquid pair must consist of (1) an alcohol and a ketone, e.g. 3- methyl -1-butanol and cyclopentanone n-pentanol and 2-methylcylopentanone, or n-butanol and methyl n-butyl ketone, (2) a ketone and an ester, e.g. methyl n-propyl ketone and n-propylacetate, (3) an aldehyde and a ketone, e.g. valeraldehyde and methyl n-propyl ketone, (4) an alcohol and an ester, e.g. ethanol and ethyl acetate; n-butanol and ethyl butyrate, or n-propyl alcohol and n-propyl acetate, (5) an aldehyde and an alcohol, (6) an aldehyde and an ester e.g. butyraldehyde and ethyl acetate or (7) two alcohols, e.g. t-butanol and iso-propyl alcohol, n-propyl alcohol and 2-butanol or n-butanol and 2-pentanol. The salt solutions preferably have a pH of 7-8 and may be adjusted to this value by the addition of freealiphatic monocarboxylic acid. The distillation is performed in a conventional extractive distillation column having a washing zone and a stripping zone.
GB12879/53A 1952-08-29 1953-05-08 Improvements in or relating to process for separation of close-boiling liquid pairs by distillation Expired GB740716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US740716XA 1952-08-29 1952-08-29

Publications (1)

Publication Number Publication Date
GB740716A true GB740716A (en) 1955-11-16

Family

ID=22117532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12879/53A Expired GB740716A (en) 1952-08-29 1953-05-08 Improvements in or relating to process for separation of close-boiling liquid pairs by distillation

Country Status (1)

Country Link
GB (1) GB740716A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0518562A2 (en) * 1991-06-12 1992-12-16 BP Chemicals Limited Process for removing acetone from a mixture comprising acetone, methyl acetate and methyl iodide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0518562A2 (en) * 1991-06-12 1992-12-16 BP Chemicals Limited Process for removing acetone from a mixture comprising acetone, methyl acetate and methyl iodide
EP0518562A3 (en) * 1991-06-12 1993-03-03 Bp Chemicals Limited Process for removing acetone from a mixture comprising acetone, methyl acetate and methyl iodide
US5262014A (en) * 1991-06-12 1993-11-16 The British Petroleum Company P.L.C. Process for removing acetone from a mixture of acetone, methyl, acetate and methyl iodide

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