pH2S for Gas-free Liquid System

[nickypaliwal]

NACE MR0175/ISO 15156 asks to calculate bubble point pressure at the given temperature. How to calculate ?

Also for single phase (liquid) system, can we directly consider system pressure to calculate pH2S ?

 

[SJones]

It's for the process engineers with their fancy software to calculate, or you work back through the system to the last point that a gas phase was present. You can consider the system pressure for partial pressure calculations, but it will be very conservative and could drive the selection of very expensive materials.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.