Investigation of Low Concentrations R22 on Methane Hydrate Formation Kinetics

Document Type : Research Note

Authors

1 School of Chemical, Gas and Petroleum Engineering, Semnan University, Semnan, I.R. IRAN

2 Centre for Gas Hydrate Research, Institute of Petroleum Engineering, Heriot-Watt University, SCOTLAND

Abstract

In this work the effect of R22 on methane hydrate formation rate is investigated. R22 and methane are in gas phase. With adding R22 in gas phase the methane hydrate formation rate is increased. Experiments were done at R22 concentrations of 0, 162, 5550, 16000 and 29500 ppm. The results show the initial rate of methane hydrate formation is increased between 36% - 64 % and the required time for reaching to the equilibrium pressure is decreased with increasing the concentration of R22. Also induction time is decreased in due to encaging R22 in hydrate phase, because with encaging R22 in hydrate phase the equilibrium pressure is decreased and driving force for methane hydrate formation is enhanced.

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References

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