Patent ID: 6096218
Filing Date: 2000-08-01
Classification: B01D,G01N

Abstract:
A method of controlling a simulated moving bed operating in a controlled state including a loop with several zones defined by points of injection of fluids with injection flow rates and points of drawing off fluids with drawing off flow rates, comprising controlling one parameter in at least one of the points of the loop by acting on a difference (.delta.) between the injection flow rates and the drawing off flow rates of the fluids by means of variations (.delta..sub.X) applied to at least two injected and/or drawn off flows wherein:.delta.=E-S where E is a sum of injected flow rates and S is a sum of drawing off flow rate and;.delta..sub.X =Q.sub.X.sup.real -Q.sub.X.sup.set where Q.sub.X.sup.real is a measurement of the injection flow rates or the drawing off flow rates and Q.sub.X.sup.set is a set flow rate for the injection or drawing off flow rates.