초록 ▼

A process is disclosed for the production of aliphatic alcohol by the direct hydration of an olefinic hydrocarbon. The process is directed to the production of isopropyl alcohol. The process includes the recovery of the alcohol from a water-rich hydration zone effluent stream by countercurrent liqui

A process is disclosed for the production of aliphatic alcohol by the direct hydration of an olefinic hydrocarbon. The process is directed to the production of isopropyl alcohol. The process includes the recovery of the alcohol from a water-rich hydration zone effluent stream by countercurrent liquid-liquid extraction against a paraffinic solvent. The solvent is derived from paraffins originally admixed with the olefin-containing feed stream, and the raffinate stream comprises water which is recycled in the process. Expensive product fractionation is eliminated in the production of a fuel grade isopropyl alcohol.

대표청구항 ▼

A process for the production of a C2, C3, C4 or C5 aliphatic alcohol which comprises the steps of: (a) contacting a feed olefinic hydrocarbon having 2, 3, 4 or 5 carbon atoms per molecule with a molar excess of water and with a solid hydration catalyst in a reaction zone and producing a liquid phase

A process for the production of a C2, C3, C4 or C5 aliphatic alcohol which comprises the steps of: (a) contacting a feed olefinic hydrocarbon having 2, 3, 4 or 5 carbon atoms per molecule with a molar excess of water and with a solid hydration catalyst in a reaction zone and producing a liquid phase hydration zone effluent stream which comprises water and a C2, C3, C4 or C5 aliphatic alcohol; (b) passing at least a liquid-phase portion of the hydration zone effluent stream into a liquid-liquid extraction zone wherein said portion of the hydration zone effluent stream is contacted with a solvent comprising a paraffinic hydrocarbon having the same number of carbon atoms as the aliphatic alcohol, and thereby forming an extract stream which comprises the aliphatic alcohol and the paraffinic hydrocarbon; and (c) separating the aliphatic alcohol and the paraffinic hydrocarbon contained in the extract stream by fractionation, recycling at least a portion of the thus-separated paraffinic hydrocarbon to the extraction zone, and withdrawing the aliphatic alcohol.