Column trough liquid distributor with

For large-diameter columns, the trough-type distributor shown in Figure 11.50 can be used, and will give good liquid distribution with a large free area for gas flow. 

Figure 1335. Packed column and internals, (a) Example packed column with a variety of internals [Chen, Chem. Eng. 40, (5 Mar. 1984)]. (b) Packing support and redistributor assembly, (c) Trough-type liquid distributor, (d) Perforated pipe distributor, (e) Rosette redistributor for small towers. (0 Hold-down plate, particularly for low density packing.

A notched-trough distributor should never be supported on the bed, as it may be misaligned during column upsets, with disastrous effects on liquid distribution. 

In Fig. 52 the liquid redistributor RP 1 [1] is presented. The device consists of distributor troughs, which are open in the direction facing the column wall. The RF 1 lies on a closed supporting ring and is fixed with special clamps. 

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