4.4. Design criteria of separators
Separators without mist extractors may be designed for gravity settling using Stokes law equation.
Typically the sizing is based on removal of 150 μm and larger diameter droplets. For practical purposes, to be on the safe side, use of the methods presented in the following sections is recommended.
4.4.1. Design flow rates
A separator may be incorporated in a process scheme for which there are different modes of operation. In this case, the separator design is based on the operation mode with the severest conditions. For the gas–liquid separation in a knock-out drum or demister, the severest condition is that with the highest value of Q, (m3/s), where this is defined by:
(4.8)
where:
Q = Volumetric ...
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