Patent Number: 8,796,496

Title: Process for preparing benzene from methane

Abstract: The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C.sub.1-C.sub.4-aliphatics, comprising the steps of I. feeding reactant stream E into a reaction zone 1, converting reactant stream E under nonoxidative conditions in the presence of a particulate catalyst to a product stream P comprising aromatic hydrocarbons and discharging product stream P from reaction zone 1, II. transferring the catalyst with reduced activity as a result of deposited coke into a reaction zone 2, III. at least partly regenerating the catalyst with supply of a hydrogen-comprising gas stream H in a reaction zone 2, at least some of the coke deposited being converted to methane to form a methane-comprising gas stream M which is fed at least partly to reaction zone 1, IV. discharging the catalyst from reaction zone 2 and V. recycling at least a portion of the discharged catalyst into reaction zone 1, reaction zone 1 and reaction zone 2 being arranged spatially adjacent to one another in the same reactor.

Inventors: Schneider; Christian (Mannheim, DE), Karches; Martin (Neustadt, DE), Tsou; Joana Coelho (Heidelberg, DE), Ahrens; Sebastian (Wiesloch, DE), Stuetzer; Dieter (Dudenhofen, DE)

Assignee: BASF SE

International Classification: C07C 2/76 (20060101); C07C 15/02 (20060101)

Expiration Date: 8/05/12018