Separation of heavy ends from streams of halogenated alkanes
AssigneeVulcan Chemicals
InventorsEric L. Mainz, Richard L. Wilson
Life of this patent
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Abstract
Provided is a method and system for separating heavy ends from a halogenated alkane in a waste stream. The method includes: (a) removing a bottom fraction containing heavy ends from a catalyst recovery unit and conveying the bottom fraction to a vessel; (b) introducing steam into the bottom fraction containing heavy ends; (c) removing a halogenated alkane vapor and a water vapor from the waste treatment unit; (d) condensing the halogenated alkane and water vapors; and (e) separating the halogenated alkane phase and water phase from the heavy ends.
Claims15
A method for the separation of heavy ends from a halogenated alkane stream, comprising:
- (a) removing a bottom fraction containing heavy ends from a catalyst recovery unit and conveying said bottom fraction to a vessel;
- (b) introducing steam into said bottom fraction containing heavy ends;
- (c) removing halogenated alkane vapor and water vapor from said treatment unit;
- (d) condensing said halogenated alkane and water vapors;
- (e) separating the halogenated alkane phase from the water phase;
- and
- (f) purging the heavy ends, which remain in the treatment unit either periodically or continuously.
A method for the separation of heavy ends from a halogenated alkane stream, comprising:
- (a) removing a bottom fraction containing heavy ends from a catalyst recovering unit and conveying said bottom fraction to a vessel;
- (b) maintaining the temperature of said vessel above the boiling point of water at a predetermined pressure;
- (c) introducing water into said vessel where a portion of the water is converted into steam and is mixed with said heavy ends and a portion of unconverted water fluid to form a haloalkane vapor, and removing a portion of the vapors from the vessel;
- (d) condensing said haloalkane mixture and the remaining portion of steam;
- and
- (e) separating a halogenated alkane phase from the water recovered.
Dependencies are inferred from the claim text.