Fluid separation assembly having an integral purge control valve.

摘要

Fluid sepn. assembly, using a hollow-fibre membrane bundle, is esp. used for drying gases, and has no external plumbing or valves. The fluid sepn. assembly has an outer shell (1) contg. an elongated inner core (5) which is surrounded by a hollow-fibre membrane bundle (2). The bundle is mounted between opposed tube-sheets (6,14) and is at least partly surrounded by an impermeable film barrier (15). Only a small area (13) of the bundle is exposed to the feed gas flow. Part of the gas mixt. permeates through into the hollow bores of the membrane fibres, and eventually leaves via the open end (17) of the shell. Non-permeating fluid passes into the hollow inner core and eventually passes, via holes (19) and outlet port (11), out of the device. The feed mixt. is fed into an inlet port (18) in the shell, and flows round the outside of the fibre bundle before reaching the exposed area (13).