Phenolchemie Gmbh & Co. Kg

Ineos Phenol & Gmbh Co., Kg

Bayer Aktiengesellschaft

Otto Schnurr

Markus Weber

Manfred Weber

Claus H Wulff

Gottfried Zaby

Tony Van Osselaer

Uwe Tanger

Reinhard Sigg

Otto Gerlich

Werner Kleinloh

Heinrich Van Barneveld

Wilfried Jordan

Gunther Lohmer

Hugo Hjm Liefooghe

Hugo H J M Liefooche

The present invention relates to a continuous method for treating a crude phenol stream comprising methylbenzofuran and hydroxyacetone by passing the crude phenol stream through at least two reactors connected in series the reactors containing an acidic ion exchange resin, whereby the temperature in successive reactors decreases in flow direction of the phenol stream so that the temperature in the first reactor in flow direction of the phenol stream is between 100&#xb0; C. and 200&#xb0; C. and the temperature in the last reactor in flow direction of the phenol stream is between 50&#xb0; C. and 90&#xb0; C. without a thermal separation step between any of two successive reactors and to the use of this method in a process for making phenol.

Process for treating phenol

The present invention provides a continuous process for recovering acetone from a waste stream from an acetone purification stage. The waste stream contains mesityl oxide and optionally acetone. The process for recovering acetone includes separating the waste stream in a separating device at least in one stream containing mesityl oxide and optionally a further stream containing acetone, then concentrating mesityl oxide in the mesityl oxide containing stream, and finally recycling the concentrated mesityl oxide stream to the separating device and bringing it into contact with a basic or acidic aqueous medium or with an acidic catalyst in the presence of water whereby mesityl oxide is at least partially hydrolyzed to acetone.

Continuous process for recovering acetone from a waste stream resulting from acetone purification

The cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide into phenol and acetone is subjected to thermal after-treatment by a process, which comprises heating the cleavage product in a reactor, wherein the heat supplied for the thermal treatment is the heat generated by at least one exothermic reaction which occurs in the reactor. The exothermic reaction which proceeds in the cleavage product is preferably the cleavage of cumene hydroperoxide.

Process for the thermal after-treatment of cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide

Process for removal of impurities from phenol by means of at least one acid catalyst

The transportation and storage of phenol is enhanced by additions of up to 70% by weight of acetone to liquid phenol.

Method for the transport and storage of phenol

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Putte-Kapellen, Belgium

Otto Schnurr