Phenolchemie Gmbh & Co. Kg

Barclays Bank Plc

Ineos Phenol & Gmbh Co., Kg

Werner Pompetzki

Otto Gerlich

Dietrich Maschmeyer

Markus Weber

Manfred Weber

Reinhard Sigg

Joachim Schuler

Michael Kleine-Boymann

Christian Michalik

J&uuml;rgen Volke

Ralf Bonmann

Dietmar Ahrens

The present invention relates to a process for the production of iso-propanol by liquid phase hydrogenation of acetone to iso-propanol in at least two hydrogenation reaction stages, each reaction stage comprising a hydrogenation reaction zone, wherein the hydrogenation reaction product leaving the reaction zone of the first reaction stage contains unreacted acetone and a product stream comprising acetone and iso-propanol is transferred to the reaction zone of a subsequent reaction stage said product stream having at the inlet to the reaction zone of said subsequent reaction stage a temperature of 60 to 100&#xb0; C., wherein the temperature of the product stream leaving the reaction zone of said subsequent reaction stage at the outlet from said reaction zone is at most 40&#xb0; C. higher than the temperature of the product stream entering said reaction zone at the inlet to said reaction zone and the temperature in said subsequent reaction zone does not exceed 125&#xb0; C., to a process of purifying an iso-propanol raw product containing less than 1,000 wppm acetone comprising subjecting the iso-propanol raw product to a distillation in a dividing wall distillation column to obtain purified iso-propanol and to an integrated process for the production of phenol employing the above hydrogenation process.

Process for the production of iso-propanol by liquid phase hydrogenation

Acetone is hydrogenated by a process comprising, conducting the liquid-phase hydrogenation of acetone in at least two hydrogenation process stages, thereby preparing isopropanol product with a high selectivity and in high purity.

Process for the hydrogenation of acetone

Phenol and acetone are prepared by a process comprising homogeneously cleaving cumene hydroperoxide in the presence of acid catalyst in a cleavage apparatus comprising at least one reactor having plug flow characteristics thereby producing a cleavage product; recycling some of the cleavage product stream by combining the recycled cleavage product stream with the cumene hydroperoxide-containing feed stream fed to said cleavage apparatus under the condition that the mass flow ratio of the recycled partial cleavage product stream to the cumene hydroperoxide-containing feed stream sent to the cleavage reactor is less than 10.

Process for preparing phenol and acetone by acid-catalyzed cleavage of cumene hydroperoxide

A process for reducing the loading of wastewaters produced in the preparation of hydroxyl and carbonyl compounds from hydroperoxides by the Hock process, which may be acidic, by treating the wastewaters with an oxygen-containing gas at a pressure greater than 25 bar absolute and at a temperature of 150-250&deg; C. Surprisingly, improved degradation rates are achieved under these conditions.

Process for cleaning up wastewaters from the hock process

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Dorsten, Germany

Werner Pompetzki