Main operating parameters for small-sized two-stage piston pusher centrifuge

TAO Yuan-qing1, LV Li-zhen1, YANG Xiao-jun1, PENG Ruo-cheng2
(1.Zhejiang Qingji Industry Co., Ltd., Hangzhou 311401, China; 2.Zhejiang Qingji Centrifuge
Manufacturing Ind. Co., Ltd., Hangzhou 311401, China)

Abstract: Aiming at the problem of excessive solidliquid separation capacity of twostage piston pusher centrifuge in waste water treatment for small chemical plants, and a twostage piston pusher centrifuge with the production capacity of 300 kg/h～500 kg/h and the residual moisture content of ≤5% is required to be designed,the parameters that affect the production capacity, such as push stroke, thickness of filter cake, pushing times, as well as the parameters that affect the residual moisture content rate, such as separation factor and residual moisture content were studied. Based on the practical operation and separation effect parameters of P40 twostage piston pusher centrifuge, that operating parameters of P25 smallsized twostage piston pusher centrifuge such as push stroke, push times, basket filter length and basket rotate speed were designed by conversion method, and basket diameter was determined. The results indicate that the production capacity and residual moisture content can meet the requirements of users in theory by calculating. The production capacity of P25 twostage piston pusher centrifuge reaches 300 kg/h～550 kg/h in actual operation, and the residual moisture content is between 4.5%～5%, which achieves the expected effect.
Key words: separation factor; pusher centrifuge; capacity; residual moisture content