Characterization and migration of oil and solids in oily sludge during centrifugation

被引:42
作者
Wang, Jun [1 ]
Han, Xu [2 ]
Huang, Qunxing [1 ]
Ma, Zengyi [1 ]
Chi, Yong [1 ]
Yan, Jianhua [1 ]
机构
[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Nongfu Spring Co Ltd, Hangzhou, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Oily sludge; solid particles; centrifugation; waste to energy oil recovery; migration; PETROLEUM SLUDGE; MOLECULAR-INTERACTIONS; EMULSIFIED WATER; REFINERY SLUDGE; RECOVERY; PYROLYSIS; STABILITY; EMULSIONS; ASPHALTENES; TEMPERATURE;
D O I
10.1080/09593330.2017.1329352
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The migration behaviors of oil, water and solids in sludge during centrifugation were elaborated. Size distribution, surface topography and lypohydrophilic properties were studied in detail. The average size of solids was 61m in original sludge, 31m in upper layer and 235m in bottom layer. The result shows that solvent is essential to separate oil phase into molecular light and weight fractions during centrifugation. With solvent/oil ratio increases from 1:2, 1:1, 2:1 to 5:1, molecular weight in upper layer decreases from 1044, 1043, 1020 to 846 combined with that in bottom layer increases. A model was proposed to calculate the oil residue content in solid phases after sedimentation. The findings of this paper provide information for optimizing the oil recovery and clean treatment.
引用
收藏
页码:1350 / 1358
页数:9
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