一种评价水合物抑制剂性能的新方法

A New Method to Evaluate the Performance of Hydrate Inhibitors

水合物抑制剂的现行评价方法需要在低温、高压条件下进行,且要在体系内通入气体(如甲烷、乙烷、丙烷等),需要大型的实验设备,实验时间较长。本文以相对分子质量相近的类烃液体(四氢呋喃)代替天然气,在其形成水合物的临界温度下进行实验,忽略压力对形成水合物的影响,根据水合物晶体析出时间的长短来考察水合物抑制剂抑制性的好坏。

The general evaluation method of hydrate inhibitor needed low temperature, high pressure, large devices and long experiment time. Some gas, such as methane, ethane, propane etc, was led into the system too. In this paper, THF was used as a substitute for natural gas and the experiment was done at the critical temperature under which THF hydrate would form. The effect of pressure on hydrate formation was ignored during this experiment and the performance of hydrate inhibitor was evaluated by BST value.