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采用水合物研究中的THF测试方法,利用RC1e量热反应系统和ReactIR在线分析系统在线监控了四氢呋喃水溶液体系降温并形成水合物的过程,并考察了形成水合物溶液体系温度、热量以及内部组成的变化。实验结果表明:19%的四氢呋喃水溶液体系在-4℃形成水合物晶核,并因相变而释放大量的热,造成溶液体系温度上升;在形成水合物晶核时,在四氢呋喃的诱导作用下,水分子间多以氢键相互作用,形成水合物结构的基础。溶液体系热量和红外变化结果在一定层面上描述了四氢呋喃溶液形成水合物的过程和作用机理,可为今后防治管道内天然气水合物的堵塞提供理论基础。
Using the THF test method in hydrate research, the process of cooling and forming hydrate of tetrahydrofuran system was monitored online by using RC1e calorimetric reaction system and ReactIR on-line analytical system. The effects of temperature, heat and internal composition of hydrate solution system Variety. The experimental results show that 19% tetrahydrofuran aqueous solution forms hydrate crystal nucleus at -4 ℃ and a large amount of heat is released due to the phase transition, resulting in the temperature increase of the solution system. When hydrate nuclei are formed, under the induction of tetrahydrofuran , Water molecules more hydrogen-hydrogen interaction, the formation of the basis of hydrate structure. The results of heat and infrared changes of the solution system describe the process and mechanism of formation of hydrate from tetrahydrofuran solution at a certain level, which may provide a theoretical basis for future prevention and control of gas hydrate blockage in pipeline.