Abstract: A vertical column extractor for the continuous countercurrent treatment of a solid-liquid system wherein an active zone of mass transfer is communicated to a discharge section which is selectively isolated from the active zone for discharging the treated solids without interrupting the continuous flow of solids and liquids through the active zone. The discharge zone is characterized by a collecting chamber divided into an upper section continuously communicating with the output from the transfer zone and a lower section which is intermittently isolated from the upper section for the batch removal of the treated solids collected therein. A liquid inlet and air vent is provided in the discharge section to prevent vapor bubbles from entering the active zone.

Abstract: A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.

Abstract: A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.