C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 15/023 (2006.01) B01J 8/00 (2006.01) B01J 19/26 (2006.01)
Patent
CA 2275726
The present invention relates to a method for the production of hydrogen peroxide by hydrogenating a quinone solution (working solution), oxidation thereof and extraction of the oxidized working solution. The method is characterized in that the working solution which is to be hydrogenated consists of ethylanthraquinone in an amount of 140-170 grams/litre, preferably about 160 grams/litre, amylanthraquinone in an amount of up to 100 grams/litre, preferably about 40 grams/litre and the rest trimethylbenzen (Shellsol) and tetrabutylurea (TBU), octylcaprolactam or substituted pyrrholidones in a weight ratio of 65:35 to 70:30, preferably 70:30. The invention also comprises an arrangement for performing the method, which is characterized in that the separation arrangement (6) for separating the catalyst from hydrogenated working solution between the hydrogenating reactor and the oxidation tower includes a separator in the form of one or more hydrocyclones (13).
L'invention concerne un procédé de production de péroxyde d'hydrogène par hydrogénation d'une solution quinonique (solution de travail), oxydation de la solution ainsi obtenue puis extraction de la solution de travail oxydée. Ce procédé est caractérisé en ce que la solution de travail à hydrogéner est composée d'éthylantraquinone à raison de 140-170 g/l, de préférence environ 160 g/l, d'amylanthraquinone à raison de 100 g/l maximum, de préférence environ 40 g/l, le reste étant constitué de triméthylbenzène (Schellsol) et de tétrabutylurée (TBU), d'octylcapro-lactame ou de pyrrolidones substituées selon un rapport en poids de 65:35 à 70:30, de préférence 70:30. Pour la mise en oeuvre du procédé, l'invention concerne également un dispositif caractérisé en ce que le dispositif de séparation (6) destiné à séparer le catalyseur de la solution de travail hydrogénée entre le réacteur d'hydrogénation et la tour d'oxydation, comprend un séparateur sous la forme d'au moins un hydrocyclone (13).
Bengtsson Erik
Casen Aslak
Unum Arnfinn
Kvaerner Process Systems A/s
Marks & Clerk
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