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Demethanizer

Demethanizer

Demethanizer

(OP)
What is the best material for a demethanizer column at 500 psi/-51 F design conditions

RE: Demethanizer

Get a copy of ASME Boiler and Pressure Vessel Code, Section VIII, Div 1 and you can determine the optimum material selection. If you are unfamiliar or don't even know this code exists, find an organization in pressure vessel design that will help you.

RE: Demethanizer

Hi Cacacho,

SA 516/70(impact tested to the design material temeprature) is common MOC for demethanizer.There are plenty of such columns designed with this material, subject to acceptable design & process conditions.
For the design temperature mentioned above the other good option could be SA 537 Cl-1 or Cl-2 steel.
Material selection depends on a lot of other factors also:-
-sour service requirements
-corrosion rates
-overpressurizing conditions which may lower the temperature below -51F
-Other design conditions as applicable

Generally good EPC companies would have the required engineering experiences on such equipments. As advised by "metengr" you need to consult them.

Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario, Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299


RE: Demethanizer

(OP)
pradipgoswami
Thanks for sharing your experience. this is, really, a response with value-added (That is the purpose of this forum).

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