What is the significance of controlling the temperature difference in the packing layer?
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Our plant has two towers; one operates under negative pressure while the other operates under slightly positive pressure. Both towers are of the composite type, with trays at the bottom and a packing layer in the upper section. A temperature difference exists in this packing layer – what is the significance of controlling this temperature difference?
The function of the packing is essentially the same as that of the trays; it mainly provides an environment for vapor-liquid mass transfer. Controlling the temperature difference across the packing is equivalent to controlling the temperature gradient in the tower. If there is no temperature difference in the packing section, it’s as if there is no temperature gradient in the tower, and in that case separation cannot take place.