MASS TRANSFER COLUMN OF RECTANGULAR CROSS SECTION FOR HEAVY LIQUID LOADS Russian patent published in 1995 - IPC

FIELD: chemical industry. SUBSTANCE: column comprises vertical casing of rectangular cross section with tiered perforated grates spaced along column height, and packing layers on grates which are inclined alternatively in opposite directions relative to one and the same sides of the column rectangular section. Grate perforations have the form of arcuate cutouts with axes directed towards grate incline and in opposite directions in grates adjacent in height. Grates are installed on parallel racks secured to opposite side walls of the column and have rectangular openings at the bottom with stretched nets whose mesh size is smaller than the geometrical dimensions of the packing for the flow of drained liquid onto underlying grates. Novelty of claimed column lies in providing an opening in the lower part of the grate, said opening being covered with a net whose mesh size is smaller than, the geometrical dimensions of packing members for free discharge of liquid onto the underlying grate. EFFECT: improved design. 5 dwg