Abstract
A set of experiments were developed to study the effect of the supersaturation on the induction time of the hydrate formation in a flow loop. Propane, carbon dioxide and a mixture of methane and propane were used to form hydrate in the loop. Induction time was measured with varying temperature and pressure which gave rise to change in the supersaturation. It was found that induction time was indirectly dependent on the supersaturation in all experiments. Measured values of induction time were in the range of 9–12 minutes for carbon dioxide, 82–103 minutes for propane and 7–22 minutes for 0.73C1+0.27C3 at the given operating conditions. Hydrate nucleation were carried out at 5°C and 3–5 MPa for carbon dioxide, 2–5°C and 1MPa for propane and 4°C and 2–4 MPa for 0.73C1+ 0.27C3. In order to calculate the induction time, a semiempirical correlation as a function of supersaturation was used. The equation parameters I were determined based on the experimental data via nonlinear regression.
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