PROCESS FOR EXCHANGING HEAT WITH A MIXED PHASE FLUID

摘要

A shell and tube heat exchanger, such as a vertical combined feed/effluent heat exchanger (VCFE), including: a shell having a fluid inlet and a fluid outlet; a plurality of baffles mounted in the shell to guide the fluid into a helical flow pattern through the shell; wherein a helix angle alpha of a baffle proximate the inlet is different than a helix angle beta of a baffle proximate the outlet.