%X Kinetic hydrate inhibitors (KHIs) are employed to mitigate gas hydrate formation in pipelines at low concentrations. Ionic liquids and conventional available KHIs (polymers) perform poorly at high subcooling and extended shut-in conditions. Thus, it's necessary to understand the inhibition mechanism and performance of mix kinetic inhibitors for gas hydrate mitigation in oil and gas transmission lines. In this work, the synergic kinetic inhibition effect of 1-Ethyl-3-methy-limidazolium chloride (EMIM-Cl) + Polyvinylpyrrolidone (PVP) on the induction time and gas uptake during carbon dioxide (CO2) gas hydrate formation is reported. The study was performed in a high pressure sapphire cell at a pressure and temperature of 36 Bar and 1 oC respectively using an isochoric constant cooling method. Result suggests that, the induction time of deionized water + carbon dioxide hydrate increased over 100 in the presence of pure EMIM-Cl and PVP, with PVP slightly higher than EMIM-Cl comparatively. Surprisingly, a significant reductions in CO2 hydrate inhibition performance is observed in the presence of EMIM-Cl + PVP studied synergic systems compared to their inhibition in pure state. © 2016 The Authors.
%K Carbon dioxide; Deionized water; Enzyme kinetics; Gases; Hydration; Ionic liquids; Kinetics; Process engineering; Sapphire, Carbon dioxide hydrates; Hydrate inhibition; Inhibition mechanisms; Kinetic hydrate inhibitors; Low concentrations; Oil and gas transmission; Polyvinyl pyrrolidone; Pressure and temperature, Gas hydrates
%J Procedia Engineering
%L scholars7387
%O cited By 48; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138
%R 10.1016/j.proeng.2016.06.474
%D 2016
%I Elsevier Ltd
%A C.B. Bavoh
%A B. Lal
%A L.K. Keong
%A M.B. Jasamai
%A M.B. Idress
%V 148
%T Synergic Kinetic Inhibition Effect of EMIM-Cl + PVP on CO2 Hydrate Formation
%P 1232-1238