Investigations on CO2 hydrate slurry for transportation in carbon capture and storage

다국어 초록 (Multilingual Abstract)

The flow characteristics of CO 2 hydrate in the presence of Tween 80 in a scaled-up test facility were investigated in order to further elucidate the potential of CO 2 hydrate slurry transportation in carbon capture and storage technology. Two formation processes were used to generate sufficient hydrate slurry for flow in a circulation loop of a 108 mm inner diameter pipe. The effects of Tween 80 concentrations on the four hydrate slurry parameters of pressure, temperature, density, and flow rate were studied and discussed. The results of the CO 2 hydrate slurry transportation experiments indicated that 0.7 wt.% of Tween 80 showed the optimal results for slurry stability, slurry temperature, and slurry density, but had no significant effect on slurry temperature during flowing in the loop. In all experiments, hydrate circulation was performed for an average duration of 80 min under stable conditions. The results suggest the possibility of transporting hydrate slurry over long distances under stable conditions with the addition of chemical additives.

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