BESORA HNOS S.R.L.

Pall Rings are cylinders with slotted walls and internal ribs, and the diameter and height are equal. These openings and interior surfaces eliminate the effect of other packings that prevent satisfactory performance in columns, providing excellent contact and redistribution of gases and liquids against all internal and external surfaces.

They provide maximum mass transfer area, and the free space, a significant increase in capacity compared to conventional loadings. The open wall design of the ring maintains the initial distribution and allows both the inner and outer areas of the ring to be active in the contact process. The rings maintain a uniform liquid and gas flow pattern. Redistribution requirements are much less demanding than for other packings. Redistribution frequency depends on packing size, liquid regime, column diameter, etc. but it is generally not economical to distribute more than every 3 meters. They generally give satisfactory results in beds depths of 5 and 6 meters, the latter value being a practical maximum limit.

Pall type packings are used in absorption and extraction columns, cooling towers, CO2 removal systems, SH2, etc., vacuum distillation, gas scrubbing, biological water treatment (trickling beds, denitrification, etc.), deaeration, extractions, etc.

Pall type packings, due to their reduced pressure drop, allow the use of lower power blowers, thus achieving a convenient energy saving.

Available materials:

Plastics: polypropylene, polypropylene with fiberglass, high density polyethylene, PVDF (Kynar, Dyneon) etc.

Metal: SAE 1010, AISI 304, 304L, 316, 316L, 430, aluminum, etc.

Simple to install: The packing can be quickly and randomly emptied dry into towers, columns or other equipment. Its design does not require special handling or preparation of the tower since there is no risk of breakage.

Other advantages: Smooth surfaces prevent the deposition of solids and although this may occasionally occur, they can be easily cleaned “in situ” with steam, air, inert gases, etc.

Breakages, ceramic sludge, etc. are things of the past when these packings are used; in this way low pressure drops are maintained and the towers can operate at maximum capacity and efficiency.