Fractionation apparatus having two integral and concentric fract

Details Fractionation apparatus having two integral and concentric fract Fractionation apparatus having two integral and concentric fract

1974-06-06

1976-05-25

Bascomb, Jr., Wilbur L.

Distillation: apparatus

Apparatus

Systems

202155, 202158, 196100, 203DIG19, B01D 326

Patent

active

039590852

ABSTRACT:
Insertion of about one-half of a small diameter distillation column through the bottom of a larger diameter column permits the fractionation of a feed stream fed to the small column into three distinct high purity streams within one vessel. An annular space between the two columns functions as a stripping section which produces a pure stream of intermediate boiling range material. Open communication between the columns at the top of the small column eliminates the requirement of having a separate reflux system for the small column.

REFERENCES:
patent: 1257470 (1918-02-01), Filippo et al.
patent: 1919599 (1933-07-01), Schonberg
patent: 2134836 (1938-11-01), Ostergaard
patent: 2578469 (1951-12-01), Goldsbarry et al.
patent: 3412016 (1968-11-01), Graven
patent: 3489649 (1970-01-01), Weiss
patent: 3502547 (1970-03-01), Bridgeford
patent: 3544428 (1970-12-01), Mellbom
patent: 3844898 (1974-10-01), De Graff

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