Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By dehydrogenation
Reexamination Certificate
2003-10-28
2010-10-19
Singh, Prem C (Department: 1797)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By dehydrogenation
C585S412000, C585S441000, C585S443000, C585S444000, C585S445000, C585S654000, C585S655000, C585S658000, C585S660000, C585S661000
Reexamination Certificate
active
07816576
ABSTRACT:
The invention relates to a method for producing unsaturated hydrocarbons. According to said method, in a first step, a hydrocarbon, especially a mixture which contains alkanes, essentially no water, and can contain water vapour, is continuously guided through a first catalyst bed provided with standard dehydration conditions. Liquid water, water vapour and a gas containing oxygen are then added to the reaction mixture obtained in the first step and, in a second step, the reaction mixture obtained is then continuously guided through another catalyst bed for oxidising hydrogen and for further dehydrating hydrocarbons. The first catalyst bed can be heated and the heating in the first step is then preferably regulated in such a way that an essentially isothermic operating mode is created.
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Heinritz-Adrian Max
Menzel Johannes
Thiagarajan Natarajan
Wenzel Sascha
Marshall & Melhorn LLC
Singh Prem C
UHDE GmbH
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