B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
165/7
B01D 3/20 (2006.01)
Patent
CA 1215639
ABSTRACT This invention relates generally to a distillation system for effecting separation of a multi component feed, and particularly to an improved bubble-cap type tray which can accommodate very wide ranges of vapor and liquid loadings. The improvement in the plate or tray design resides in the utilization of a plurality of unique bubble caps having a riser section but each having first and second slot sections below the liquid level on the tray. The second slot sections are placed in the perimeter of the cap surface between the riser outlet and first slot openings. The elevation is selected so that the second slot openings are at a level below the liquid level but at a depth such that the liquid head or pressure seal above the second series of slot sections is significantly less than the liquid head or pressure seal above the first slot sections. In addition the second slot sections in each unique cap should have a total cross- sectional area of from about 5 to 30% of the total cross- sectional area of the first slot sections in each cap. Generally these unique caps are installed in selected rows on the tray and comprise 5 to 30%, and typically 10 to 20% of the total caps on the tray.
456536
Bennett Douglas L.
Edwards Thomas J.
Rowles Howard C.
Air Products And Chemicals Inc.
Mcfadden Fincham
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