Characterization of inhibition mechanisms of kinetic hydrate inhibitors using ultrasonic test technique

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• 作者：Jinhai Yang^a ; Bahman Tohidi ; ^a ; ^{bahman.tohidi@pet.hw.ac.uk}
• 关键词：Gas hydrates ; Polymers ; Nucleation ; Adsorption ; Synergism ; Ultrasonic test technique
• 刊名：Chemical Engineering Science
• 出版年：2011
• 出版时间：1 February 2011
• 年：2011
• 卷：66
• 期：3
• 页码：278-283
• 全文大小：628 K

文摘

The inhibition characteristics of kinetic hydrate inhibitors were experimentally investigated by utilization of the ultrasonic testing technique. PVCap (poly(vinylcaprolactam)) and VP/BA (vinyl pyrrolidone/butyl acrylate) were chosen as two typical kinetic inhibitors. Results of the tests demonstrate two kinds of inhibition mechanisms of kinetic hydrate inhibitors, i.e., nucleation inhibition and growth inhibition. PVCap polymer is strong to retard catastrophic growth of hydrate formation, while VP/BA dominantly prevents hydrate nucleation. The synergism of glycol ether compounds on the performance of PVCap was also tested. It was found that glycol ether compounds noticeably prolong the nucleation time, and extend the delay of catastrophic growth significantly.