pall ring

pall ring

[′pȯl ‚riŋ]
(chemical engineering)
A specially shaped steel ring used as packing for distillation columns.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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2 (metal) 150 0.95 Hiflow ring (metal) 97.3 0.973 VSP ring (metal) 104 0.98 RMSR ring (metal) 115 0.97 Pall ring (ceramic) 120 0.78 Hiflow ring (ceramic) 86.7 0.815 INTALOX saddle (ceramic) 120 0.77 Pall ring (plastic) 110 0.92 Hiflow ring (plastic) 112 0.93 NOR-PAC ring (plastic) 90 0.952 Hackette (plastic) 135 0.93 Envipac (plastic) 98 0.961 Pall ring (plastic) 111 0.92 Flexirings 65 0.94 Pine cones 320 0.8 Bark 250 0.5 Packing type Equivalent diameter ([d.sub.e]), m Raschig ring (ceramic) 0.0270 CMR No.