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hydrate inhibition, glycol (MEG) and salts with Prode software

hydrate inhibition, glycol (MEG) and salts with Prode software

hydrate inhibition, glycol (MEG) and salts with Prode software

(OP)
we inject glycol as hydrate inhibitor in a natural gas stream which contains water + some salts (mainly Nacl), glycol dosage has been estimated averaging depression temperatures of MEG & salts (GPA), I have now Prode software, do you have expericence with CPA electrolyte or Pitzer models ? Can you recommend one for this (MEG+salts) application ?

RE: hydrate inhibition, glycol (MEG) and salts with Prode software

with hydrates I have used CPA electrolyte which (in Prode Properties) reduces to the CPA PR in the absence of electrolytes giving the advantage of one model for MEG & salts...
you may find some numbers here,

"http://www.prode.com/en/hydrate.htm"

with a different method (manual) you sum up depression temperatures due to different inhibitors...

RE: hydrate inhibition, glycol (MEG) and salts with Prode software

(OP)
thanks gaswell,
the values calculated with MEG are close to GPA report but I have not experience including salts, ok, CPA electrolyte looks more suitable than Pitzer for this application.

RE: hydrate inhibition, glycol (MEG) and salts with Prode software

I agree with gaswell to prefer CPA for that application...

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