Title: Stripping column

Abstract: The column employs a head section with a counterflow column, a bottom section with a counterflow column and a plurality of reaction stages for stripping metal salts via steam from ammoniacal solutions or suspensions. Each reaction stage has a floor, a pipe defining a laterally confined chamber, an outlet and a valve in the outlet to control the discharge of liquid. At least one steam line communicates the upper end of each stage with the pipe in the next uppermost stage. Incrustation of the column by the stripped salts is reduced by the high velocity of flow in the bubble bed in each stage.

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Other info:

Inventors: Buhlmann, Ulrich (Effretikon, CH)

Application Number: 762244
Filing Date: 1977-01-25
Publication_date: 1979-05-01
Assignee: Sulzer Brothers Limited (Winterthur, CH)
Primary Class(es): 159/16.3 159/18, 159/20.1, 159/29, 159/DIG8, 261/21
Other Classes:
US Patent Ref:

1616209	Feb, 1927	Weisgerber	159/16.
2356628	Aug, 1944	Stalman	261/21.
3421567	Jan, 1969	Hoppe	159/16.
3737378	Jun, 1973	Mori et al.	159/16.

Other Refs:
Primary Examiner: Yudkoff, Norman
Assistant Examiner:
Attorney: Kenyon & Kenyon, Reilly, Carr & Chapin