METHOD AND AN APPARATUS FOR INTIMATELY CONTACTING A SUBSTANCE IN FLUID FORM WITH A LIQUID

摘要

A substance in a fluid form, e.g. a polyacrylamide flocculant powder, is intimately mixed with a liquid, e.g. water by feeding the powder down a circular bore in a casing while the water is fed tangentially and swirled in two chambers in the casing and around the circular bore to emerge in the bore, preferably as oppositely swirling, inwardly converging streams in the path of the powder. The diverging portion of the first stream intersects the converging portion of the second stream, which goes out of the bore with the powder intimately mixed therewith.