Abstract: A charge of distilland (33) is metered into a heated inclined trough (18) within a chamber (10). Vapors of distilland rise to a level (41) which is below the upper level (26) of the trough. The vapors spill over the sides (31 and 32) of the trough and fall to the lower section of the chamber where cooling coils (42) condense the vapors and the resultant distillate flows out an exit conduit (122). Residue materials are moved by a pusher (47) over the end (26) of the trough into a drain chute (51). During the return of the pusher, an air cylinder (103) is operated to lift the pusher from the bottom of the trough.

Abstract: A contaminated solvent is first distilled in a distillation chamber (12) to drive off a substantial portion of the solvent which is condensed and recovered leaving a residual slurry (18) consisting of some solvent and the contaminants. A metering device (21) is cyclically operated to transfer precise amounts of slurry to a second distillation chamber where the slurry is deposited in an annular trough (26) formed in a heat plate (25). A spreader including a number of blades (27) moves the deposited slurry charge along the trough to an exit opening (44). The residual solvent in the slurry charge is vaporized, condensed and fed back into the first chamber (12). The remainder of the charge is exited through the trough opening (44) into a collection barrel (50) which is vented to pass back any solvent vapors to the second distillation chamber.