Degussa Aktiengesellschaft

Degussa - Huls Ag

Werner Wildner

Torsten Balduf

Birgit Bertsch-Frank

Ina Hemme

Georg Markowz

Rudiger Schutte

Rüdiger Schütte

Catrin Becker-Balfanz

Jürgen Rollmann

Catrin Becker

Jurgen Rollmann

Reactions between at least two fluid reactants are performed in a reactor comprising wall elements (), slot-shaped reaction spaces () and cavities () for conducting a fluid heat-carrier through. Depending on the process and throughput, a modular structural design is chosen wherein an arbitrary number of wall elements () are assembled to a right-parallelepipedal block (), the reaction spaces () are formed between lateral surfaces () of right-parallelepipedal wall elements (), the reactants are introduced into the reaction spaces () from edge regions of one side of the block () and are conducted through the reaction spaces () in parallel flows and the fluid heat-carrier is conducted through the tubular cavities () extending in the interior of the wall elements ().

Process and device for carrying out reactions in reactor with slot-shaped reaction spaces

An aqueous solution of hydrogen peroxide is produced by direct synthesis from hydrogen and oxygen in the presence of a heterogeneous catalyst. According to the invention, a gas mixture comprising H.sub.2 and O.sub.2, essentially saturated or supersaturated with water (=containing fog) is fed into a reactor containing the catalyst. The volume ratio of the gas mixture fed in (standard liters per hour) to liquid removed (liters per hour) is adjusted to a value equal to or greater than 15,000, especially 20,000 to 50,000, and the gas mixture leaving the reactor is recycled after replenishment with H.sub.2, O.sub.2, and H.sub.2 O vapor. Solutions with high H.sub.2 O.sub.2 concentration can be obtained according to the invention without additional concentration.

Process for producing hydrogen peroxide by direct synthesis

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Alzenau, Germany

Werner Wildner