GB685904A - Improvements in the separation of mixtures of isobutyl and methyl alcohols - Google Patents

Improvements in the separation of mixtures of isobutyl and methyl alcohols

Info

Publication number
GB685904A
GB685904A GB17384/51A GB1738451A GB685904A GB 685904 A GB685904 A GB 685904A GB 17384/51 A GB17384/51 A GB 17384/51A GB 1738451 A GB1738451 A GB 1738451A GB 685904 A GB685904 A GB 685904A
Authority
GB
United Kingdom
Prior art keywords
column
pipe
gases
methyl
alcohol
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
GB17384/51A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB685904A publication Critical patent/GB685904A/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/02—Monohydroxylic acyclic alcohols
    • C07C31/04—Methanol

Landscapes

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

Abstract

<PICT:0685904/IV (b)/1> The separation of a mixture of isobutyl and methyl alcohols, in particular a mixture obtained from the reaction products of CO and H2 by treatment in a distillation column under pressure, as described in Specification 682,826, is effected by heating to slightly below the critical temperature under pressure, in particular at about the pressure at which the mixture was formed, and leading therethrough a gas free from or poor in methyl alcohol. The process may be carried out in a still, advantageously provided with a column, which may be arranged beneath the column serving for the crude separation of the synthesis products, and need have only 1/10 th the cross-section thereof. The gas free from or poor in methyl alcohol may be the initial synthesis gas or a fraction of the circulating gas freed from alcohol by cooling. Synthesis reaction product gases are led by pipe 3 into pressure column 1 at about 250 atm. and 220 DEG C. Gases escaping at 4 are cooled, and separated in 11, condensate being supplied by pump 6 to the top of the column and, by pipe 13, to the reactor, while gases are returned to the reactor by pipe 14. Part of these gases is fed by pipe 8 to still 9, heated to just above 200 DEG C. and having a column 2 in which isobutyl alcohol is freed from methyl and is withdrawn by pipe 10.ALSO:<PICT:0685904/III/1> The separation of a mixture of isobutyl and methyl alcohols, in particular a mixture obtained from the reaction products of CO and H2 by treatment in a distillation column under pressure as described in Specification 682,826 is effected by heating to slightly below the critical temperature under pressure, in particular at about the pressure at which the mixture was formed, and leading therethrough a gas free from or poor in methyl alcohol. The process may be carried out in a still, advantageously provided with a column, which may be arranged beneath the column serving for the crude separation of the synthesis products, and need have only 1/10th the cross-section thereof. The gas free from or poor in methyl alcohol may be the initial synthesis gas or a fraction of the circulating gas freed from alcohol by cooling. Synthesis reaction product gases are led by pipe 3 into pressure column 1 at about 250 atmosphere and 220 DEG C. Gases escaping at 4 are cooled, and separated in 11, condensate being supplied by pump 6 to the top of the column and, by pipe 13, to the reactor, while gases are returned to the reactor by pipe 14. Part of these gases is fed by pipe 8 to still 9, heated to just above 200 DEG C and having a column 2 in which isobutyl alcohol is freed from methyl and is withdrawn by pipe 10.
GB17384/51A 1950-07-28 1951-07-23 Improvements in the separation of mixtures of isobutyl and methyl alcohols Expired GB685904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB8391A DE844738C (en) 1950-07-28 1950-07-28 Process for the decomposition of mixtures of isobutyl and methyl alcohol

Publications (1)

Publication Number Publication Date
GB685904A true GB685904A (en) 1953-01-14

Family

ID=6955812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17384/51A Expired GB685904A (en) 1950-07-28 1951-07-23 Improvements in the separation of mixtures of isobutyl and methyl alcohols

Country Status (2)

Country Link
DE (1) DE844738C (en)
GB (1) GB685904A (en)

Also Published As

Publication number Publication date
DE844738C (en) 1952-07-24

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