离心作用下疏水不锈钢网的油水分离性能

Oil-water Separation Performance of Hydrophobic Stainless-steel Mesh with Centrifugation

以自制的疏水不锈钢网为油水分离基材,设计了在离心场作用下新型油水分离装置,研究了在间歇条件下温度、初始油水比和搅拌转速对分离效率的影响。结果表明:制备的疏水不锈钢网具有优异的疏水性能,静态疏水接触角可达145.5°;因升温会增强油水混合物乳化程度,升温不利于油水分离;受设备参数限制,初始油水比为1∶3时具有最佳分离效果,其分离效率可达0.90,当温度为298.15 K、初始油水比为1∶3时,搅拌转速从500 rad/min增强至700 rad/min,油水分离效率从0.70提高至0.96。

A novel oil-water separation device with centrifugation by using self-made hydrophobic stainless-steel mesh as the oil-water separation substrate was designed.The factors which influenced the separation efficiency under intermittent conditions such as temperature,initial oil-water ratio and stirring speed were investigated.The results showed that the prepared hydrophobic stainless-steel mesh had excellent hydrophobicity with the static contact angle of 145.5°.The temperature increase will enhance the emulsification of oil-water mixture,which was not conducive to oil-water separation.Limited by the device parameters,it had the best separation effect with the separation efficiency of 0.90 under the initial oil-water ratio of 1∶3.When the temperature was 298.15 K,the initial oil-water ratio was 1∶3 and the stirring speed increases from 500 rpm to 700 rpm,the oil-water separation efficiency increases from 0.70 to 0.96.