IMPROVEMENTS IN OR RELATING TO LIQUID SPRAYING

摘要

A spray device comprises an axially symmetrical rotatable cup 18 the interior of which provides an extended surface 74; a film of liquid is continuously provided on the extended surface preparatory to directing the liquid from the surface beyond an outer rim 22a of the cup; a gas stream is supplied through an annular orifice 22 to impact the liquid immediately beyond the outer rim 22a thereby to produce a spray of liquid droplets; and an axially symmetrical baffle 80 is mounted with the cup 18 coaxially therewith, an annular gap 82 being provided between the baffle and the extended surface. The device is useful in gas/liquid contacting applications such as desulphurisation of a flue gas under spray drying conditions using e.g. a lime slurry as the absorbent.