Extended liq. gas phase boundary surface prodn - by feeding fluid flow in conduit over displacement body with aerofoil shape and 2nd is introduced by injector located in body at area of largest cross=section

摘要

A new procedure for producing a larger phase boundary surface in liq/gas systems has a displacement-body/channel configuration. The gaseous phase is dispersed in the liq. phase flowing over the displacement body, or vice versa, by means of an injector located in the displacement body in the area of the narrowest cross-section between the displacement body and the channel. This injector has nozzles of dia. about 0.1 mm which are approx. perpendicular to the direction of flow of the fluid in the channel. Also claimed is a device for carrying out this procedure, in which a displacement body is fixed by means of supports in a new or existing channel with a constant or slightly conical cross-section. The displacement body may have a circular or rectangular cross-section, and its cross-section increases continuously in the nozzle section up to the area of the injector so that a laminar boundary layer is formed. The contour of the diffuser section (9) has an aerofoil shape characterised by a concave curve, the max. slope of the curve at the start of the diffuser section being e.g. 6-10deg. USE/ADVANTAGE - Used for example in enriching water with O2 or for washing out dust from gases or for dispersing a liq. into a gas stream. A gaseous medium is dispersed in very fine bubbles into a flowing liq. or vice versa, by means of a displacement body which can be installed in a new or existing channel.