picture) place tubes inside ashell

picture) place tubes inside a
shell filled with of cooling
fluid. The cooling fluid is often
pure water with corrosion
inhibitors.
When designing the process it
is important to plan the thermal
energy balance. Heat should be
conserved e.g. by using the
cooling fluid from the gas train
to reheat oil in the oil train.
Excess heat is disposed e.g. by
sea water cooling. However
hot seawater is extremely
corrosive, so materials with
high resistance to corrosion, such as titanium must be used. Photo: SEC Shell and Tube
Heat Exchanges
4.3.2 Scrubbers and reboilers
The separated gas may contain mist and other liquid droplets. Liquid drops of water
and hydrocarbons also form when the gas is cooled in the heat exchanger, and must
be removed before it reaches the compressor. If liquid droplets enter the compressor
they will erode the fast rotating blades. A scrubber is designed to remove small
fractions of liquid from the gas.