GB298137A - Improved process for concentrating acetic acid - Google Patents

Improved process for concentrating acetic acid

Info

Publication number
GB298137A
GB298137A GB28386/28A GB2838628A GB298137A GB 298137 A GB298137 A GB 298137A GB 28386/28 A GB28386/28 A GB 28386/28A GB 2838628 A GB2838628 A GB 2838628A GB 298137 A GB298137 A GB 298137A
Authority
GB
United Kingdom
Prior art keywords
acetic acid
butyl acetate
per cent
still
water
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
GB28386/28A
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie 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 Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of GB298137A publication Critical patent/GB298137A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

298,137. Wacker Ges. f³r Elektrochemische Industrie Ges., Dr. A. Oct. 3, 1927, [Convention date]. Right to Patent relinquished. Acetic acid.-Dilute acetic acid is concentrated by distillation with an acetic ester of boiling point between 105-135‹ C., e.g. butyl acetate, iso-butyl acetate, iso-amyl acetate, &c. Thus, acetic acid of 40 per cent strength may be mixed with butyl acetate and heated in a still connected to a distillation column and dephlegmator until practically all the water has been removed in the form of an azeotropic mixture. The condensate obtained separates in an aqueous and an oily layer of which the latter containing the butyl acetate is run back into the still whilst the aqueous layer containing 0.2 per cent of acetic acid is drawn off. A residue in the still is finally obtained containing a small percentage of butyl acetate to which sufficient water in vapour or liquid form is added, to form an azeotropic mixture which is heated, the butyl acetate and the water distilling off leaving a residue of acetic acid of 95 per cent strength.
GB28386/28A 1927-10-03 1928-10-03 Improved process for concentrating acetic acid Expired GB298137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE298137X 1927-10-03

Publications (1)

Publication Number Publication Date
GB298137A true GB298137A (en) 1929-09-19

Family

ID=6090891

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28386/28A Expired GB298137A (en) 1927-10-03 1928-10-03 Improved process for concentrating acetic acid

Country Status (3)

Country Link
CH (1) CH139504A (en)
FR (1) FR661343A (en)
GB (1) GB298137A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5980696A (en) * 1994-08-23 1999-11-09 E. I. Du Pont De Nemours And Company Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
US6150553A (en) * 1998-08-11 2000-11-21 E. I. Du Pont De Nemours And Company Method for recovering methyl acetate and residual acetic acid in the production acid of pure terephthalic acid
US9133094B2 (en) 2011-04-18 2015-09-15 Angus Chemical Company Apparatus and process for nitration selectivity flexibility enabled by azeotropic distillation
US9180384B2 (en) 2010-12-10 2015-11-10 Dow Global Technologies Llc Apparatus and process for using olefin as an azeotropic entrainer for isolating 1,3-DICHLORO-2-propanol from a 2,2′-oxybis (1-chloropropane) waste stream
US9192877B2 (en) 2010-12-10 2015-11-24 Angus Chemical Company Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5980696A (en) * 1994-08-23 1999-11-09 E. I. Du Pont De Nemours And Company Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
US6150553A (en) * 1998-08-11 2000-11-21 E. I. Du Pont De Nemours And Company Method for recovering methyl acetate and residual acetic acid in the production acid of pure terephthalic acid
US9180384B2 (en) 2010-12-10 2015-11-10 Dow Global Technologies Llc Apparatus and process for using olefin as an azeotropic entrainer for isolating 1,3-DICHLORO-2-propanol from a 2,2′-oxybis (1-chloropropane) waste stream
US9192877B2 (en) 2010-12-10 2015-11-24 Angus Chemical Company Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution
US9133094B2 (en) 2011-04-18 2015-09-15 Angus Chemical Company Apparatus and process for nitration selectivity flexibility enabled by azeotropic distillation

Also Published As

Publication number Publication date
CH139504A (en) 1930-04-30
FR661343A (en) 1929-07-24

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