GB370771A - Improvements in processes of concentrating acetic and other acids - Google Patents

Improvements in processes of concentrating acetic and other acids

Info

Publication number
GB370771A
GB370771A GB20176/31A GB2017631A GB370771A GB 370771 A GB370771 A GB 370771A GB 20176/31 A GB20176/31 A GB 20176/31A GB 2017631 A GB2017631 A GB 2017631A GB 370771 A GB370771 A GB 370771A
Authority
GB
United Kingdom
Prior art keywords
ether
acids
acid
acetic
aqueous
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
GB20176/31A
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.)
Carbide and Carbon Chemicals Corp
Original Assignee
Carbide and Carbon Chemicals Corp
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 Carbide and Carbon Chemicals Corp filed Critical Carbide and Carbon Chemicals Corp
Publication of GB370771A publication Critical patent/GB370771A/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

Abstract

The concentration of aqueous aliphatic acids such as acetic, formic, and butyric acids is effected by means of isopropyl ether as an entraining agent for carrying off the water. The acid is distilled with the ether, or the vapour of the ether may be injected into the aqueous acid. The ether layer of the condensate is returned to the process continuously or intermittently.ALSO:The concentration of aqueous aliphatic acids, such as acetic, formic, and butyric acids, is effected by means of isopropyl ether which may be used as a solvent extraction agent or as an entraining agent for carrying off the water. When an extraction process is used, the water passes off with the first portions of the ether in the distillation of the extract. When the ether is used as an entraining agent, the acid is distilled with the ether or the vapour of the ether may be injected into the aqueous acid. The ether layer of the condensate is returned to the process continuously or intermittently.
GB20176/31A 1930-07-25 1931-07-14 Improvements in processes of concentrating acetic and other acids Expired GB370771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US370771XA 1930-07-25 1930-07-25

Publications (1)

Publication Number Publication Date
GB370771A true GB370771A (en) 1932-04-14

Family

ID=21892317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20176/31A Expired GB370771A (en) 1930-07-25 1931-07-14 Improvements in processes of concentrating acetic and other acids

Country Status (1)

Country Link
GB (1) GB370771A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861923A (en) * 1953-06-25 1958-11-25 Distillers Co Yeast Ltd Purification of aliphatic acids
US3356594A (en) * 1964-12-21 1967-12-05 Monsanto Co Separation of hydrocarbons of varying degrees of unsaturation by extractive distillation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861923A (en) * 1953-06-25 1958-11-25 Distillers Co Yeast Ltd Purification of aliphatic acids
US3356594A (en) * 1964-12-21 1967-12-05 Monsanto Co Separation of hydrocarbons of varying degrees of unsaturation by extractive distillation

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