Duesenanordnung zur Gaseinleitung in einen Behaelter, der wenigstens teilweise mit feinkoernigem Material befuellt ist

DE 19836397 A UPAB: 20000405 NOVELTY - A distributor nozzle arrangement for feeding gas into a vessel (1) containing at least some fine granular solids, has a bottom inlet pipe (4) extending vertically upwards and having a closed end, but provided with side facing openings (8) in the vertical pipe wall. A bell shaped cover (5) fits over the head of the pipe, creating an annular cavity (7) between the bell and the pipe, and the gas then discharges from the cavity through a channel (9) which is upwardly inclined at an angle of 35 - 60 deg. to the horizontal. USE - Inlet gas distributor for gas - solids contacting i.e. for mass and / or energy transfer. ADVANTAGE - The device provides an adjustable gas flow outlet area, and if the gas flow is interrupted, or intermittent in nature, the solids are prevented by the cover from flowing back into the nozzle. Control of the gas discharge velocity is used to reduce attrition of the solids