MASS-TRANSFER TRAY Russian patent published in 1997 - IPC

FIELD: devices of mass-transfer towers for interaction of gas(vapor)-liquid systems designed for conducting the processes of absorption, rectification, gas scrubbing; may be used in chemical, petrochemical, gas and other industries. SUBSTANCE: mass-transfer tray includes horizontal plate, round in cross-section, with central opening in which vertical vapor branch pipe is installed axisymmetrically. Installed axisymmetrically on the vertical vapor branch pipe, at some distance from upper edges of vapor branch pipe, is cap whose diameter exceeds than of vapor branch pipe. Lower edges of cap are located at some distance from tray plate to pass vapor. Cap lower part has perforations over its perimeter to pass vapor. Masrd dansfer trays are installed one above another in vertical cylindrical tower. Installed over the larger part of tray plate, between tower wall and cap is discharge opening for discharging liquid from the upper tray. Plate circular part has opening where transfer tube is tightly fitted. Upper edge of transfer tube is located above the level of perforations in side walls of vapor cap. Novelty in the invention consists in presence of diametrical partition above cap and perforations made in the form of arched slots with their convexity directed upward on tray plate with axes directed tangentially from discharge and transfer tubes, and arched slots in lower edges of cap with their convexity directed outside and at acute angle to vertical plane towards transfer tube. EFFECT: higher efficiency. 6 dwg