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[mkhooi]

Dear all,

I am currently sizing a two phase horizontal separator fitted with vane type demister for a Shell project. My reference is DEP 31.22.05.11" Gas/liquid separators - Type selection and design rule. Horizontal separator is selected due to head room restriction. To prevent liquid carryover to pipeline and the slightly waxy nature of the fluid, I've selected vane type demister. According to DEP, vane type demister is not suitable when the operating pressure is higher than 100 bar.


As my separator operating pressure is 100-110 bar, therefore would appreciate if someone can advise why vane type demister is not recommended for pressure >100bar. Is it purely because efficiency of the vane pack demister is significantly decreased or because of some other mechanical issue?

Please advise.


Hooi