化工学报2016，Vol.67Issue(10)：4219-4224,6.DOI:10.11949/j.issn.0438-1157.20160622
底流管直径对旋流防阻机性能的影响
Effect of underflow pipe diameter on performance of hydrocyclone anti-blockage device
摘要
Abstract
Separation performance of a sewage-hydrocyclone anti-blockage device consisting of a hydrocyclone and an ejector-reflux component was studied on sand-water and domestic sewage with various diameters of underflow pipe. Experimental results demonstrated that the hydrocyclone anti-blockage device with continuous underflow had higher separation efficiency but negligibly higher power consumption than conventional hydrocyclones with a closed “grit pot”. Contrary to the Kelsall’s conversion separation efficiency, a more comprehensive separation efficiency for the hydrocyclone anti-blockage device was proposed to include separation efficiency of the device and amount of available water for heat pump system. Under the optimum diameter of underflow pipe in the range of 5 mm and 10 mm,i.e., the optimum diameter ratio of the underflow pipe to the vortex finder between 12.5% and 25%, the sewage-hydrocyclone anti-blockage device had the separation efficiency of 92.6%—94.3% and the split ratio of 1.32%—2.54% for foulants of sizes < 4 mm in untreated domestic sewage. The split ratio was proportional to the underflow pipe diameter. Therefore, hydrocyclone separation could isolate foulants temporarily, clean water and recycle heat from sewage.关键词
旋流分离器/底流管直径/连续底流/废水/回收/多相流Key words
hydrocyclone/underflow pipe diameter/continuous underflow/waste water/recovery/multiphase flow分类
资源环境引用本文复制引用
田金乙,倪龙,赵加宁..底流管直径对旋流防阻机性能的影响[J].化工学报,2016,67(10):4219-4224,6.基金项目
教育部留学归国人员科研启动基金项目（第46批）；建筑安全与环境国家重点实验室2012年开放课题。@@@@Foundation item：supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars (46th) and the State Education Ministry and the Opening Funds of State Key Laboratory of Building Safety and Built Environment （46th）
