Patent ID: 7238150
Filing Date: 2007-07-03
Classification: B01D,B04B

Abstract:
1. A method of modeling the performance of a decanting centrifuge, wherein the centrifuge includes a bowl having a bowl length, L B , and an inner surface displaced from a central axis by a bowl radius, r 2 , the centrifuge further including a feed inlet extending along the central axis and providing radial fluid communication of feed fluid with a flow rate, Q, to the bowl, wherein a pond of fluid forms along the inner surface of the bowl when the bowl is rotated to have an angular velocity, ω, the pond having a top surface displaced from the central axis by a pond top radius, r 1 , the method comprising the steps of: inputting data related to the centrifuge including the bowl radius, r measuring data related to the feed fluid including a fluid density, ρ inputting the measured data related to the feed fluid into the analyzer; calculating a d modeling a first cut function for laminar flow as a function of a particle diameter, d calculating a maximum point within the pond, I modeling a second cut function for turbulent flow having a laminar boundary layer along the bowl inner surface as a function of particle diameter, d