The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 1985
Filed:
May. 23, 1984
Friedrich-Wilhelm Moeller, Friedrichsdorf, DE;
Henning Buchold, Maintal, DE;
Helmut Klein, Hanau am Main, DE;
Otto-Ludwig Garkisch, Bad Soden, DE;
Friedrich Guetlhuber, Metten, DE;
Walter Laber, Deggendorf, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt, DE;
Deggendorfer Werft und Eisenbau GmbH, Deggendorf, DE;
Abstract
A process for producing styrene by the dehydrogenation of ethyl benzene whereby the ethyl benzene in a mixture with steam is introduced into a tubular reactor, the tubes of which are heated by molten salts. The structural parameters of this process are the tube diameter which should be 20 to 35 millimeters, the temperature of the molten salts which should be 580.degree. to 660.degree. C. and at most 20.degree. C. higher than the reaction temperature at the catalyst and the weight ratio of steam to ethyl benzene of the feed stock which should be 0.5 to 1. The process saves energy and increases efficiency by reducing the steam consumption.