Deutsche Texaco Aktiengesellschaft

Edeleanu Gesellschaft M.b.h.

Rainer Maxelon

Gerhard Wirtz

Recovery of solvent from hydrocarbon oil extract fractions comprising solvent and oil is effected in at least three sequential flash vaporization stages wherein the pressure of the second vaporization stage is at the highest pressure level and the pressure of the third vaporization stage is at a pressure level intermediate the pressure level of the first and second vaporization stages.

Process for recovering solvents from solvent-containing hydrocarbon

A spray nozzle assembly for spraying washing liquid onto a moving surface of a filter cake. The respective spray nozzles are communicated with a pressurized source of wash liquid, and are arranged adjacent the filter cake in successive doubled rows. The latter are laterally aligned normal to the direction of the filter cake movement. Corresponding spray nozzles of the respective rows are so aligned to define a plurality of nozzle lines which deviate from a parallel relationship with the path of travel of said filter cake.

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Raunheim, Germany

Rainer Maxelon