文献类型：期刊文献

中文题名：用于重质非水相液体分离的新型旋流器研究

英文题名：Research on a novel hydrocyclone for dense nonaqueous phase liquid separation

作者：赵玮[1];张学军[2];李剑平[3,4];李诗豪[1];杨雪晶[1];吕树光[3,5]

机构：[1]华东理工大学机械与动力工程学院,上海200237;[2]中国石油乌鲁木齐石化公司,新疆乌鲁木齐830000;[3]华东理工大学资源与环境工程学院,上海200237;[4]高浓度难降解有机废水处理技术国家工程实验室,上海200237;[5]国家环境保护化工过程环境风险评估与控制重点实验室,上海200237

年份：2022

卷号：44

期号：12

起止页码：1595

中文期刊名：环境污染与防治

外文期刊名：Environmental Pollution & Control

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：国家重点研发计划项目“场地土壤污染成因与治理技术”(No.2018YFC1802505)。

语种：中文

中文关键词：重质非水相液体;旋流器;数值模拟;分离效率;短路流

外文关键词：dense nonaqueous phase liquid;hydrocyclone;numerical simulation;separation efficience;short-circuit flow

摘要：高效分离地下水中的重质非水相液体已成为地下水修复领域的热点问题。设计了一种内溢流管外侧带有环隙溢流管的新型旋流器,通过数值模拟对比了传统旋流器与新型旋流器的流场特性、短路流量及对重质非水相液体的分离性能。结果表明:(1)新型旋流器的环隙溢流结构降低了内旋流区的切向速度和轴向速度,增大了外旋流区的切向速度,且消除了短路流。(2)新型旋流器在网格数量2470810、最佳入口速度6 m/s时,分离效率最高达到99.91%,在同等分离效率的前提下分离时间缩短为传统旋流器的81%。
Efficient separation of dense nonaqueous phase liquid from groundwater has become a hot issue in the field of groundwater remediation.A novel hydrocyclone with annular overflow pipe outside the inner overflow pipe was designed.The flow field characteristics,short-circuit flow and separation performance of dense nonaqueous phase liquid were compared between traditional hydrocyclone and novel hydrocyclone through numerical simulation.Results showed that:(1)the annular overflow pipe of the novel hydrocyclone reduced the tangential and axial velocity in the inner overflow area,increaseed the tangential velocity of the outer overflow area,and eliminated the short-circuit flow.(2)The optimum inlet velocity of the novel hydrocyclone was 6 m/s with mesh number of 2470810,and the maximum separation efficiency reached 99.91%.At the same time,separation time reduced to 81%compared with the traditional hydrocyclone.