Contaminated solvent recycling system
AssigneeChemChamp LLC
InventorsCharles Harland, Dennis William Mount, Mathieu Fredette
Life of this patent
Estimating the term…
Abstract
A contaminated solvent recycling system comprises a distillation vessel having a distillation zone and a separate waste collection zone and heating means for heating contaminated solvent feed within the distillation zone vessel to distill off the solvent. By separating the distillation zone from the waste collection zone, the distillation zone can be made small enough to process small consecutive batches of contaminated solvent feed whilst the waste collection zone can be made large enough to accommodate waste accumulating from the distillation process for extended periods of time between waste removal operations.
Claims26
A distillation system for vaporizing a process liquid from a process liquid mass to obtain a vapour stream therefrom, said system comprising:
- a distillation means comprising a distillation vessel and heating means for heating said process liquid within said vessel;
- and
- conduit means extending between and communicating with said distillation vessel and said process liquid mass;
- said distillation vessel, said conduit means and said process liquid mass forming a closed system, whereby heating process liquid feed in said distillation vessel to vaporize liquid therefrom causes vapour to exit through said conduit means for recycling into said process liquid mass and subsequent cooling of said distillation vessel causes said vapour to condense within said distillation vessel and create a vacuum which draws further process liquid feed into said distillation vessel.
A contaminated solvent recycling system for recycling clean solvent from a contaminated solvent mass, said recycling system comprising:
- a distillation means comprising a distillation vessel and heating means for heating contaminated solvent feed within said vessel;
- and
- conduit means extending between and communicating with said distillation vessel and said contaminated solvent mass;
- said distillation vessel, said conduit means and said contaminated solvent mass forming a closed system, whereby heating contaminated solvent feed in said distillation vessel to distill solvent therefrom causes solvent vapour to exit through said conduit means for recycling into said contaminated solvent mass and subsequent cooling of said distillation vessel causes said vapour to condense within said distillation vessel and create a vacuum which draws further contaminated solvent feed into said distillation vessel.
A distillation unit for use in a contaminated solvent recycling system for recycling clean solvent from a contaminated solvent feed, said distillation unit comprising:
- a distillation vessel and heating means for heating contaminated solvent feed within said vessel;
- said distillation vessel comprising a distillation zone and a separate waste collection zone for collecting waste from the distillation process;
- means for removing waste from said distillation zone into said waste collection zone before said waste accumulates in said distillation zone to a sufficient extent to impede the operation of said distillation unit;
- and
- means for introducing said contaminated solvent feed into said distillation zone;
- and means for removing said waste from said waste collection zone.
Dependencies are inferred from the claim text.