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通过对致冷剂HCFC-141b气体水合物结晶生成过程的显微观测研究,得到了水合物的结晶生成过程微观图像,认为水合物的生成是由于HCFC-141b致冷剂与水在过冷的条件下在界面接触处率先成核,成核诱导与致冷剂的扩散导致水合物不断长大,并呈现出枝状生长的现象.对水合物生成过程中不同阶段的图像进行维数计算,结果表明该水合物结晶生成过程初期属于分形生长,其生长的维数为1.52.应用分形理论,建立了HCFC-141b水合物结晶生长的RIN-DLA(RandomInducementNucleation-Diffu-sion Limited Aggregation)模型,并对水合物的结晶生成过程进行了计算机模拟,计算并比较了实际图形和模拟图形的维数.
Through the microscopic observation of the crystallization process of HCFC-141b gas hydrate, the microcosmic images of the hydrate crystallization process are obtained. It is thought that the hydrate formation is caused by the reaction between HCFC-141b refrigerant and water in the supercooled Under the conditions of the interface at the interface of the first nucleation, nucleation induced and the proliferation of the refrigerant led to the hydrate continue to grow, and showing the phenomenon of dendritic growth.During hydrate formation in different stages of the image dimension calculation, The results show that the hydrate crystallization process belongs to fractal growth in the early stage, and its dimension of growth is 1.52. The RIN-DLA (Random End Distribution of Diffusion-Boundary Aggregation) model of HCFC-141b hydrate crystal growth is established by fractal theory The crystal formation process of hydrate was simulated by computer, and the dimension of actual graph and simulation graph were calculated and compared.