Experimental Investigation of Synergistic Effect of Amino Acid Glycine with Various Metal Salts on Preventing Ethane Gas Hydrate Formation

Kinetic and thermodynamic inhibitors have a significant effect on control and prevention of gas hydrate formation. The purpose of this work is experimental evaluation of synergy between two groups of thermodynamic and kinetic inhibitors. For this purpose, the kinetics and delay time of ethane gas hydrate in the presence of various additive compounds of amino acid glycine and various metal salts were investigated. The tests were conducted at 275 K and 23 bar pressure in different concentrations of 1, 3, 5 and 10% of weight percent of the salts. Comparison of the results shows that the synergistic effect of this compound of inhibitors increases the induction time of ethane gas hydrate formation in subcooling above 10 C for over three hours. However, the effective concentration for each salt is different.