bubble cap

bubble cap

[′bəb·əl ‚kap]
(chemical engineering)
A metal cap covering a hole in the plate within a distillation tower; designed to permit vapors to rise from below the plate, pass through the cap, and make contact with liquid on the plate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In this latest project the internal shells of two absorber columns, which were 5.2metres in diameter and two cooling columns, 5.4 metres in diameter, were treated on the inner shell and at the bubble cap and support ring areas.
The Aspen Plus[TM] RATEFRAC Module uses the Chan and Fair, Scheffe and Weiland and Grester mass transfer correlations for sieve, valve and bubble cap trays, respectively.
Three different types of distillation trays were tested: sieve, valve and bubble cap. Operational pressures were set in advanced in order to guarantee the use of cooling water in the condensers.
The simulation was carried out using both the equilibrium and non-equilibrium stage models for sieve, valve and bubble cap trays.