GPSA · Katz · Baillie-Wichert
Understand hydrate formation conditions, prediction methods, inhibition strategies, and prevention
The calculator uses the Katz method for sweet gas based on GPSA Figure 20-4, and the Baillie-Wichert method for sour gas containing H2S or CO2. Baillie-Wichert should be used when H2S exceeds 1% or CO2 exceeds 3%.
H2S and CO2 raise the hydrate formation temperature compared to sweet gas, as documented in GPSA Figure 20-8. This means sour gas is more prone to hydrate formation and requires more aggressive prevention measures.
The Hammerschmidt equation calculates the freezing point depression achieved by thermodynamic inhibitors such as methanol, MEG, or DEG. It determines the required inhibitor concentration in the free water phase to suppress hydrate formation below the operating temperature.
It predicts gas hydrate formation temperature and calculates inhibitor needs using the Hammerschmidt correlation.
It uses the Hammerschmidt correlation to estimate hydrate formation conditions and required inhibitor concentrations.
Yes, it is a free online calculator that provides instant hydrate formation temperature and inhibitor requirement results.