高校化学工程学报2017，Vol.31Issue(1)：31-37,7.DOI:10.3969/j.issn.1003-9015.2017.01.005
污水旋流防阻机在不同溢流管与圆柱段长度比值下的分离性能试验
Experimental Study on Separation Performance of a Hydrocyclone Anti-Blockage Device with Different Vortex Finder to Cylindrical Section Length Ratios
摘要
Abstract
A sewage hydrocyclone anti-blockage device with ejector-reflux function was proposed to solve anti-blockage and anti-fouling problems of heat exchangers in sewage source heat pumps. Separation experiments were performed on sand-water and domestic sewage. The results show that the anti-blockage device has an effective separation effect on both sand (75~250μm) and foulant (< 4 mm). The separation efficiency for sand (75~250μm) is 98.17%~100%, and that of foulant (< 4 mm) is 94.33%~96.96%. The optimum ratio of vortex finder length to cylindrical section length is proportional to the discrete phase density. Furthermore, the ejector-reflux device can prevent blockage and make foulant be continuously discharged, and it also relieve side effects of "entrainment of coarse particles in overflow", which results in the increase of separation efficiency. In addition, the energy consumption of the anti-blockage device (which almost did not change with the ratio of vortex finder length to cylindrical section length) is low (< 17 kPa in this paper). The split ratio can be kept at low level to ensure high separation efficiency (<10% in this paper), which leads to much higher available sewage amount than that of anti-blockage devices in traditional sewage source heat pumps.关键词
污水源热泵/旋流分离器/连续底流/溢流管与圆柱段长度比值Key words
sewage source heat pump/hydrocyclone/continuous underflow/ratio of vortex finder length to cylindrical section length分类
资源环境引用本文复制引用
田金乙,倪龙,赵加宁..污水旋流防阻机在不同溢流管与圆柱段长度比值下的分离性能试验[J].高校化学工程学报,2017,31(1):31-37,7.基金项目
教育部留学归国人员科研启动基金(第46批) （第46批）
建筑安全与环境国家重点实验室2012年开放课题. （）
