GB592919A - Distillation process for the removal of water from organic compounds - Google Patents

Distillation process for the removal of water from organic compounds

Info

Publication number
GB592919A
GB592919A GB1471945A GB1471945A GB592919A GB 592919 A GB592919 A GB 592919A GB 1471945 A GB1471945 A GB 1471945A GB 1471945 A GB1471945 A GB 1471945A GB 592919 A GB592919 A GB 592919A
Authority
GB
United Kingdom
Prior art keywords
tetrahydropyran
water
aqueous layer
distillation
propanol
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
GB1471945A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to FR931889D priority Critical patent/FR931889A/en
Publication of GB592919A publication Critical patent/GB592919A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • B01D3/36Azeotropic distillation

Landscapes

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

Abstract

Organic compounds, e.g., alcohols, acids, esters are dehydrated by distillation with tetrahydropyran which forms an azeotropic mixture with the water which on distilling off and condensing stratifies into an aqueous layer containing a small percentage of tetrahydropyran and a tetrahydropyran layer containing a small percentage of water. In examples (1) 300 gs. n-propanol/water binary azeotrope are mixed with 100 gs. tetrahydropyran and distilled in a column connected to a total condenser and decanter from which the lower aqueous layer is withdrawn continuously. After removal of the aqueous layer the distillation was continued with 3 : 1 reflux until the still head temperature reached 98 DEG C., n-propanol containing 0.08 per cent. water being recovered (2) as applied to formic acid with which the tetrahydropyran also forms an azeotrope, the tetrahydropyran is added in only sufficient quantity to form the required water/tetrahydropyran azeotropic mixture (4) sorbitol and (5) glucose are dehydrated similarly.ALSO:Organic compounds, e.g. alcohols, acids, esters are dehydrated by distillation with tetrahydropyran which forms an azeotropic mixture with the water which on distilling off and condensing stratifies into an aqueous layer containing a small percentage of tetrahydropyran and a tetrahydropyran layer containing a small percentage of water. In examples: (1) 300 gs. n-propanol/water binary azeotrope are mixed with 100 gs. tetrahydropyran and distilled in a column connected to a total condenser and decanter from which the lower aqueous layer is withdrawn continually. After removal of the aqueous layer, the distillation was continued with 3 : 1 reflux until the still head temperature reached 98 DEG C., n-propanol containing 0.08 per cent water being recovered; (2) as applied to formic acid with which the tetrahydropyran also forms an azeotrope, the tetrahydropyran is added in only sufficient quantity to form the required water/tetrahydropyran azeotropic mixture; (4) sorbitol and (5) glucose are dehydrated similarly.
GB1471945A 1945-06-11 1945-06-11 Distillation process for the removal of water from organic compounds Expired GB592919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR931889D FR931889A (en) 1945-06-11 1946-06-11 Water removal of organic compounds

Publications (1)

Publication Number Publication Date
GB592919A true GB592919A (en) 1947-10-02

Family

ID=1730967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1471945A Expired GB592919A (en) 1945-06-11 1945-06-11 Distillation process for the removal of water from organic compounds

Country Status (1)

Country Link
GB (1) GB592919A (en)

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