Process for the preparation of hydrogen peroxide (ii)

Details Process for the preparation of hydrogen peroxide (ii) Process for the preparation of hydrogen peroxide (ii)

C - Chemistry, Metallurgy

01

B

23/289, 23/397,

C01B 15/023 (2006.01) B01J 10/00 (2006.01) B01J 19/24 (2006.01)

Patent

CA 2008656

Abstract The invention relates to a process for the preparation of hydrogen peroxide by the anthraquinone process. A reaction mixture into which there are fed hydrogen or a hydrogen- containing gas and a working solution, i.e. an anthra- quinone derivative in an organic solvent, is circulated via an oblong static mixing zone (2) made up of several parts, in order to hydrogenate the anthraquinone derivative in the presence of a solid catalyst, and by removing from the cir- culating reaction mixture (8) hydrogenated working solution (13) and gas (11). According to the invention, the reaction mixture (14) is catalyzed (10) in a tubular reactor in which the reaction mixture is intermittently mixed in a static mixing zone, the reaction mixture (8) being circu- lated through the mixing and catalyst zones (9, 10) at a velocity of 0.1 - 1.5 m/s, preferably 0.3-1.0 m/s.

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