Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Rolf Strub

Rudolf Buttiker

Joachim Voigt

Wan-Chang Chiu

A method and an arrangement are provided for emptying a Big Bag or similar transport container which is filled with pourable, especially pulverized goods which are not to come into contact with their surroundings, wherein the Big Bag is inserted in a sluice means () which is closed off from the surroundings, with simultaneous sealing of the sluice means, which communicates with a processing container () for receiving the contents of the Big Bag, whereupon the Big Bag is cut open inside the sluice means by a cutting means () provided therein. The empty Big Bag is compressed in a removal zone (A) inside the sluice means () and removed into a plastic sack () attached to the sluice means ().

Method and arrangement for emptying big bags

The apparatus (1) for wet oxidation is pre-assembled with its individual units, namely a high-pressure pump (2), a heat exchanger (3), a reactor (4) for the actual wet oxidation and a compressor (5) for feeding an oxygen/gas mixture, in one or two supporting flames and is accommodated in such a manner that its dimensions and its overall weight allow it to be transported on a road and/or rail vehicle, there advantageously being provided two such supporting flames in the form of standard containers (8 and 9), of which one may contain the reactor (4), divided into individual tube sections (6), and the heat exchanger (3), and the other may contain the remaining units, so that the entire apparatus can be pre-assembled into virtually operational condition and the two containers simply have to be set up, joined together and connected on site. Wet oxidation can thus be carried out even where relatively small quantities of medium are to be purified.

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Jongny, Switzerland

Rolf Strub