文献类型：期刊文献

英文题名：UU-type parallel mini-hydrocyclone group for oil-water separation in methanol-to-olefin industrial wastewater

作者：Lv, Wen-jie[1,2];Dang, Zhi-hong[2];He, Yuan[3];Chang, Yu-long[2];Ma, Shi-hao[2];Liu, Bing[2];Gao, Lian-xin[1];Ma, Liang[1,2]

机构：[1]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Petr & Chem Ind Environm Protect Engn Ctr Petroch, Shanghai 200237, Peoples R China;[3]Shenhua Xinjiang Chem Co Lt, Urumqi 831404, Peoples R China

年份：2020

卷号：149

外文期刊名：CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION

收录：;EI(收录号：20200708165615);WOS:【SCI-EXPANDED(收录号:WOS:000531587800009)】；

基金：We would like to express our thanks for the sponsorship of the Fundamental Research Funds for the Central Universities and National Natural Science Foundation of China (Grant No. 51808224).

语种：英文

外文关键词：Oil-water separation; Mini-hydrocyclone group; Average flow rate; Wastewater treatment

摘要：Methanol to olefin (MTO) process is a chemical technology for producing low-carbon olefins from coal-based or natural gas-based methanol. It has changed the pattern of low-carbon olefins relying on petroleum cracking, and opened a new process for producing low-carbon olefins. However, the wastewater generated in the MTO process is difficult to handle. Numbering-up of mini-hydrocyclone is often used to enhance the processing capacity of wastewater treatment when mini-hydrocyclone is used for oil-water separation in methanol-to-olefin process. In this paper, the efficiency and pressure drop distribution of a single mini-hydrocyclone were studied in the laboratory. In addition, according to the U-U parallel configuration model, 150 mini-hydrocyclones arranged in parallel were established and used for the oil-water separation process of methanol-to-olefin reaction wastewater. The industrial operation results show that the average flow rate of long-period operation is 282 m(3)/h, the average pressure drop was 0.31 MPa, and the average separation efficiency of the mini-hydrocyclone group was 90 %. Especially for heavy components such as alkanes and aromatics, it had a good separation effect. Thus, it is shown that the mini-hydrocyclone group has good applicability in oil-water separation.