Electric field efficiently enhanced thermochemical cleaning for oil recovery from oily sludge

被引：5

作者：

Gou, Xingyue ^{[1
]}

Zheng, Guocan ^{[1
,3
]}

Tang, Jinjing ^{[1
]}

Tao, Changyuan ^{[1
,2
]}

Liu, Renlong ^{[1
]}

Liu, Zuohua ^{[1
,2
]}

机构：

[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China

[2] State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China

[3] Chongqing Univ, Analyt & Testing Ctr, Chongqing 400044, Peoples R China

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2023年 / 185卷

基金：

中国国家自然科学基金;

关键词：

Oily sludge; Shale; Oil recovery; Electric field; ELECTROKINETIC REMEDIATION; ORGANIC CONTAMINANTS; PYROLYSIS; SHALE;

D O I：

10.1016/j.cep.2023.109314

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Electric field efficiently enhanced thermochemical cleaning for oil recovery from oily sludge (OS) was proposed in this work, which was inspired by electro-kinetic (EK) remediation of sludge. The effects of different factors (e. g., current density, the concentration of solution, liquid to solid ratio) on oil removal efficiency of OS were investigated. It was found that the oil removal efficiency of OS could reach more than 60 wt% by electric field enhanced the instability of metastable emulsion system with a minimum energy consumption of 604.8 J/g. The content of the residual oil in the sludge could be lowered from 8.6 wt% to 2.8 wt% after being treatment under the optimum conditions, which showed a 143 wt% maximum increase in oil removal effiency compared to non electric field treatment. The recovered oil mainly consisted of long chain alkanes, which had high recovery value. Based on characterization and analysis results, the mechanism was speculated to provide guidance for the resource utilization of OS with low energy consumption in industrial processing.

引用

页数：9