在添加聚乙烯吡络烷酮((PVP(K90))并且降低水合物生成驱动力(过冷度)的溶液中,研究水合物生成量的变化。结果表明,水合物生成驱动力较高时,水合物晶核形成阶段与水合物晶核成长、聚结阶段同时进行,气液交界面处会形成致密的水合物层,阻碍水合物继续生成。在含有PVP(K90)的溶液中,降低水合物的生成驱动力,使水合物晶核形成阶段与晶核成长、聚结阶段在时间上分开;然后增加水合物生成驱动力,水合物没有在气液交界面处形成致密的水合物层,而是聚结在搅拌杆上,最终水合物的生成量有较大提升。 The change of hydrate formation was studied in a solution with polyvinylpyrrolidone (PVP (K90)) and a reduction in the driving force for hydrate formation (supercooling degree). The results show that when the hydrate formation driving force is high , Hydrate nucleus formation stage and hydrate crystal nucleation and coalescence stage occur at the same time, the gas-liquid interface will form a dense layer of hydrate, hinder the hydrate to continue to generate in the solution containing PVP (K90), reduce Hydrate formation driving force makes the hydrate nucleation stage and nucleus growth and the coalescence stage separate in time; then, the hydrate formation driving force is increased, and the hydrate does not form a dense hydrate layer at the gas-liquid interface , But coalesced in the stirring rod, the final hydrate generation has greatly improved.