Patent ID: 9101884
Filing Date: 2015-08-11
Classification: B01D,Y10T

Abstract:
1. A Vibration Induced Dynamic (VID) spiral wound filtration device comprising: a spiral wound filter element comprising a fluid inlet, an effluent outlet, and a filtrate outlet tube, wherein the spiral wound filter element comprises a spiral wound filter membrane; a substantially cylindrical radially perforated central filtrate drain tube in direct contact with and disposed within the spiral wound filter membrane, wherein the substantially cylindrical radially perforated central filtrate drain tube is configured to transmit vibration to the spiral wound filter membrane, and wherein the substantially cylindrical radially perforated central filtrate drain tube nutates, but does not rotate with respect to the spiral wound filter element, and wherein filtrate passes radially inward along a tangential spiral path through the spiral wound filter element to drain through the substantially cylindrical radially perforated central filtrate drain tube; and a first motor adapted to induce cyclical modal vibration of the substantially cylindrical radially perforated central filtrate drain tube; wherein the spiral wound filter membrane is disposed within and constrained by a substantially circular-cylindrical shell; wherein the substantially circular-cylindrical shell is disposed within a pressure vessel; wherein the Vibration Induced Dynamic (VID) spiral wound filtration device further comprises a plurality of hydraulic tubes disposed between the substantially circular-cylindrical shell and the pressure vessel; wherein a second motor is configured to selectively expand the hydraulic tubes with periodic pressure pulsations at a selectable rate; and wherein the periodic pressure pulsations in the hydraulic tubes are configured to deform the substantially circular-cylindrical shell; and wherein the periodic pressure pulsations are timed to induce radial vibrations of a lobar-modal form in the substantially cylindrical shell.