Hydrate formation below the freezing point of water 1

[MortenA]

Anybody got knowledge about this subject or best of all references.

The situation is:

I have a gas stream where the water dew point at the lowest pressure (75 barg) is -16 deg C. For higher pressure the deqpoint is only marginally higher.

This means that the water will freeze to ice. Will hydrates then form (we are way below hydrate formation point)?

If "normal" ice just as big a nuiance?

Best regards

Morten Andersen

 

[25362]

From the OGJ, Aug. 30, 1993, methane hydrate formation at 50 bar, takes place at 6.5^oC. From a graph in the same article, @ 75 bar the methane hydrate would form at 10^oC.
The article: Method predicts hydrates for high-presure gas streams by Mahmood Moshfeghian et al.

 

[MortenA]

I know that im below hydrate formation temperature (wrote that) - but since water is never present in "liquid" form but condenses at ice (is this what happens - reverse sublimation?) then what. HYSYS actually claim that hydrates are not formed but ice is...

Best regards

Morten