Abstract A High Pressure Differential Scanning Calorimeter (HP-µDSC) was used to characterize the kinetic inhibition performance of several kinetic hydrate inhibitors (KHIs) up to 390 bar (39 MPa) of model natural gas. A novel protocol was devised to increase the spread between effective KHIs to obtain their performance ranking. The natural gas used in the study was a mixture of 90 mol% methane and 10 mol% propane. Linear cooling ramps at a constant cooling rate of 0.5 K/min were used under isobaric conditions. Both the formation temperature of natural gas hydrate during a linear cooling ramp and the amount of hydrate formed were used for comprehensive analysis. The second method was based on the growth inhibition of natural gas hydrates and opened a new possibility that only several repeat measurements may be sufficient for fast screening of good KHIs. The results showed that HP-µDSC is a promising tool for the evaluation of kinetic inhibition performance of KHIs that can only be obtained in minute quantities.

中文翻译：

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使用高压差示扫描量热仪对动力学水合物抑制剂进行排序

摘要 高压差示扫描量热仪 (HP-µDSC) 用于表征几种动力学水合物抑制剂 (KHI) 在高达 390 bar (39 MPa) 的模型天然气下的动力学抑制性能。设计了一种新颖的协议来增加有效 KHI 之间的传播以获得它们的性能排名。研究中使用的天然气是 90 mol% 甲烷和 10 mol% 丙烷的混合物。在等压条件下以 0.5 K/min 的恒定冷却速率使用线性冷却斜坡。天然气水合物在线性冷却过程中的形成温度和形成的水合物量都用于综合分析。第二种方法基于天然气水合物的生长抑制，并开辟了一种新的可能性，即仅多次重复测量就足以快速筛选良好的 KHI。结果表明，HP-μDSC 是一种很有前途的工具，可用于评估只能以微量获得的 KHI 的动力学抑制性能。