SDS溶液中二氧化硅制品对水合物生成的影响

Effect of different forms of silica products in SDS solution on natural gas hydrate formation

实验主要研究了SDS溶液与不同二氧化硅制品混合体系下天然气水合物晶体的生成情况。实验证实了由晶体层生长理论分析得到的晶体生长模式在该实验中的正确性。有些情况下天然气水合物的生成取决于SDS溶液浓度的大小,影响天然气水合物的生长模式,有些情况下溶液内部行为的复杂性和粒子的表面性质也影响天然气水合物的生成模式。核生成速率的快慢直接影响着天然气水合物晶粒的大小,但对于天然气水合物储气密度并没有较明显的影响。对于天然气水合物的工业化生成来说,在二氧化硅-0.2 g/L SDS体系下,天然气水合物储存更多的天然气气体,是比较理想的实验组。

The formation of natural gas hydrate crystals in the mixed system of SDS solution and different silica products was mainly studied in this experiment.It confirmed the correctness of the crystal growth pattern obtained from the theoretical analysis of the crystal layer growth.In some ofher cases,the formation of natural gas hydrate depended on the concentration of the SDS solution,which affected the growth mode of natural gas hydrate;in some ofher cases,the complexity of the internal behavior of the solution and the surface properties of the particles also affected the generation mode of natural gas hydrate.The rate of nucleation generation directly affected the size of natural gas hydrate grains,but had no obvious effect on the storage density of natural gas hydrate.For industrial production of natural gas hydrate,in the silicon dioxide-0.2 g/L SDS system,natural gas hydrate could store more natural gas,which is an ideal experimental group.