Feasibility and economic analysis of diesel oil extraction from oiled-sand by supercritical CO2 process

被引：0

作者：

Wang, Yuzhen ^{[1
,2
]}

Wang, Shuzhong ^{[2
]}

Li, Yanhui ^{[2
]}

Wen, Sheng ^{[2
]}

机构：

[1] Faculty of Printing and Packaging Engineering, Xi'an University of Technology, Xi'an

[2] Key Laboratory of Thermo-Fluid Science and Engineering of MOE, Xi'an Jiaotong University, Xi'an

来源：

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2015年 / 49卷 / 05期

关键词：

Diesel oil; Economic analysis; Extraction; Oiled-sand; Supercritical CO[!sub]2[!/sub;

D O I：

10.7652/xjtuxb201505020

中图分类号：

学科分类号：

摘要：

To analyze the feasibility and economy of diesel oil extraction by supercritical CO2 from oiled-sand, the relationship curve between the solubility in supercritical CO2 and the extraction efficiency was obtained according to the corresponding references and experimental data. Results show that when the solubility is more than 25 g/(100 g), the extraction efficiency can reach 98%. Aspen software was used for simulating the extraction efficiency of the main compounds of C10~C20 in diesel oil, and the operation parameters such as pressure, extraction time and CO2 flow rate were optimized. It is shown that at the condition of 35℃, 20 MPa, extraction time of 180 min, CO2 flow rate of 60 kg/h and methanol to CO2 ratio of 0.3, the extraction efficiency of the C10~C20 compounds can reach 95%. The technical and economic analyses of a 20 t/d supercritical CO2 extraction system show that the construction investment is 15 million yuan, and 24 000 yuan can be earned per day when the oiled-sand with an oil mass fraction of 21% is treated by this system. So the initial construction investment can be recovered in two years. The supercritical CO2 extraction process can not only solve the pollution problem of the existing oiled-sand, but also recover the diesel oil effectively, thus alleviating the increasingly tense supply-demand relationship of oil and fuel gas. ©, 2015, Xi'an Jiaotong University. All right reserved.

引用

页码：128 / 133

页数：5

共 9 条

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