Patent ID: 6010559
Filing Date: 2000-01-04
Classification: B01D,B01F

Abstract:
The method of mixing scrubbing liquid with semiconductor industry exhaust gas flowing through a conduit system and removing the scrubbing liquid from the gas without appreciably affecting the pressure or flow rate of gas through such system comprising the steps of;(a) mounting a mixing member having a first scrubbing surface and an oppositely disposed second scrubbing surface for rotation about its axis in a chamber;(b) directing semiconductor industry exhaust gas from a conduit system through an inlet into said chamber near the axis of said mixing member and said first scrubbing surface;(c) withdrawing gas from said chamber through an outlet near the axis of said mixing member and said second scrubbing surface;(d) injecting scrubbing liquid into said chamber and directing said scrubbing liquid toward said first scrubbing surface;(e) causing said gas and said scrubbing liquid to flow radially along said first scrubbing surface in the radial direction from said axis toward the periphery of said mixing member;(f) injecting scrubbing liquid into said chamber and directing said scrubbing liquid toward said second scrubbing surface;(g) causing said scrubbing liquid to flow radially along said second surface in the radial direction from said axis toward the periphery of said mixing member while causing said gas to flow radially in the radial direction from the periphery of said mixing member toward said axis; and(h) collecting said scrubbing liquid near the periphery of said mixing member and withdrawing said scrubbing liquid from said chamber.