| 摘要 |
Process and device for tangential filtration with deblocking, in which a fluid to be filtered forms a liquid loop and moves tangentially to one face of a membrane (3) under a pressure Ph, in which a filtrate flows on the other face of the membrane via a conduit fitted with a flowmeter (5) and a valve (1) to a tank at atmospheric pressure Pa, in which the filtration takes place by virtue of a positive transmembrane pressure (Ph - Pa), is characterised in that, … … - in a filtration stage the hydrodynamic pressure Ph is adjusted with the aid of an adjustable valve (2) … - in a deblocking stage, … a) the valve (1) is closed and the valve (2) is simultaneously opened slightly, … b) the valve (2) is opened abruptly, … c) the valve (1) is opened and the valve (2) is gradually closed. … …<??>Application to the filtration of corrosive liquids. …<IMAGE>… |
