C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/289
C01B 15/023 (2006.01) B01J 19/24 (2006.01)
Patent
CA 1323747
ABSTRACT The invention relates to a process in the continuous catalytic hydrogenation step during production of hydrogen peroxide according to the anthraquinone process by alter- nate reduction and oxidation of a working solution of al- kylated anthraquinones, said working solution being sup- plied at the upper end of the hydrogenation reactor and uniformly distributed across the surface of the monolithic catalyst bed, while simultaneously introducing hydrogen gas or hydrogen gas-containing gas, the flow of said work- ing solution through the catalyst bed being adjusted such that the liquid flow is lower than the falling rate of the liquid through the bed, whereby gas bubbles are formed which have a diameter close to the diameter of the catalyst channels, and whereby such gas plugs and corresponding liquid plugs alternately and automatically flow downwardly through said channels and a so-called plug flow is obtained.
612658
Eka Nobel Ab
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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