Centre De Recherches Metallurgiques-centrum Voor Research in De

Societe Francaise D'etude D'installations Siderurgiques Sofresid

S.a. Sidmar

Siderurgie Maritime (maritieme Staalnijverheid) Sidmar S.a.

Theophile Martens

Christian Rubens Josis

Andre Hans

Henri Georges Bernet

A method of purifying waste water, for example waste water from a coking plant, comprises supplying waste water to be purified to the upper part of a stripping column comprising a plurality of substantially horizontal plates disposed above one another, supplying vapor to the lower part of the column, and supplying a strong base to the column laterally at one or more levels, wherein the water to be stripped is passed downwardly from the top of the column across a number of successive plates sufficient to permit the pH of the water to decrease to a value below 7, and wherein the base is supplied at a level or levels lower than that at which the pH has decreased to the above value.

Method of purifying waste water

A method of and an apparatus for the dry quenching of coke comprises a band conveyor upon which the coke is transported continuously in a relatively thin layer and enclosed at least in part by a vault of quartz or other heat-transfer material which is sprayed upon its face turned away from the coke with water to produce steam which is continuously removed and used directly or indirectedly as a source of heat.

Method of and apparatus for the dry quenching of coke

Process and apparatus for removing solid matter from coal tar recovered f coal distillation comprising the steps of centrifuging the tar in order to produce a liquid phase consisting of tar which is substantially free of residual solids and a solid phase consisting of solid matter and tar, and mixing the solid phase with a solid material comprising carbon.

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Ertvelde, Belgium

Theophile Martens