INFLUENCE OF FORMATION TEMPERATURE AND INHIBITOR CONCENTRATION ON THE DISSOCIATION TEMPERATURE FOR HYDRATES FORMED WITH POLY VINYL CAPROLACTAM
Inhibitor containing systems were investigated for hydrate structures I and II. The kinetic inhibitor PVCap was added to the water phase for each hydrate structure. Dissociation temperatures were determined for various formation temperatures and PVCap concentrations. Obtained dissociation temperat...
| Main Authors: | , |
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| Language: | English |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://hdl.handle.net/2429/1071 |
| Summary: | Inhibitor containing systems were investigated for hydrate structures I and II. The kinetic inhibitor PVCap
was added to the water phase for each hydrate structure. Dissociation temperatures were determined for
various formation temperatures and PVCap concentrations. Obtained dissociation temperatures were
compared with corresponding values calculated with CSMHYD. Differences between experimental and
calculated values were compared for various formation temperatures and inhibitor concentrations.
Comparison revealed that these parameters (formation temperature and concentration) had an effect on the
dissociation temperature. Dissociation temperatures for hydrates formed at low degrees of subcooling were
higher than for hydrates formed at large subcooling. The effect depended on the system pressure;
apparently decreasing or vanishing with increasing pressure. Furthermore, the temperature of dissociation
increased with the inhibitor dose. |
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