GB506473A - A process for obtaining organic oxy-compounds - Google Patents

Abstract

506,473. Separating organic compounds. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. July 25, 1938, No. 22079. Convention date, Aug. 10, 1937. [Class 2 (iii)] Organic oxy-compounds such as alcohols, ethers and esters arc obtained from mixtures comprising two liquid phases encountered in the course of manufacturing such oxy-compounds, by separating the phases and extracting at least a part of the oxy-compound from the phase of more hydrophobic character, such as a hydrocarbon phase, by contacting it with a part of the other phase at a temperature below that prevailing during the pbase separation. The process may be used for the removal of free carboxylic acid, such as acetic acid, from the ester phase of a mixture consisting of an ester phase, such as an amyl acetate phase obtained from amylene and acetic acid, and an esterification catalyst phase, such as a sulphuric acid phase, or to obtain an alcohol from the hydrocarbon phase of an alcoholcontaining mixture consisting of an olefinecontaining hydrocarbon phase and an olefine hydration catalyst acid phase, such as an inorganic polybasic acid phase, or to obtain an alcohol from the ether phase of an alcoholcontaining mixture consisting of an ether phase and an etherification catalyst phase. The extractor used may be a tower for promoting counter-current contact or a mixing tank and the extraction may be carried out continuously, batchwise or intermittently. Typical esters which may be freed from the corresponding free carboxylic acid are the ethyl, propyl, butyl, amyl and allyl esters of formic, propionic, butyric, crotonic, benzoic, succinic and methacrylic acids or esters containing halogen or hydroxy substituents. The process may also be applied to the recovery of methyl alcohol in the production of methyl-tertiary amyl ethers from a tertiary amylene-pentane fraction and methyl alcohol.