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基于冰冻切片法的固液悬浮浆体稳定性分析

DOI: 10.13334/j.0258-8013.pcsee.2015.13.018, PP. 3345-3350

Keywords: 水焦浆,固液两相流,悬浮浆体,冰冻切片法,浓度分布,稳定性,沉降

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Abstract:

通过冰冻切片法对固液两相流浆体——水焦浆进行稳定性的测定,得到水焦浆不同高度及轴向的浓度分布,水焦浆沿高度方向有明显的分层,越接近浆体的底部,水焦浆的浓度越高。而且,对于同种石油焦-水的固液两相分散系,表观黏度越高,分散系的稳定性越好。分别采用冰冻切片法和常规的析水法、棒插法及倒置法对静置不同时间的同黏度的水焦浆进行稳定性测定。实验表明静置时间越长,水焦浆分散体系中固液两相的分离越明显,分散系的稳定性越差,而冰冻切片法最有效、最全面。

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