PNEUMATIC INJECTOR Russian patent published in 1997 - IPC

FIELD: liquid dispersing. SUBSTANCE: diffuser 6 of inner cylinder 3 of injector is made with diameter less than those of head 7 and diffuser 5 of intermediate cylinder forming between them a gas-liquid nozzle. The wall of nozzle, being continuation of annular gas nozzle, is made with beveled at angle α = 7-12 deg. exit region after diffuser 6 of inner cylinder 3. Height of annular gas-liquid nozzle is chosen from the following relationship: h = S + where D is diameter of annular gas-liquid nozzle, D_o is diameter of diffuser of inner cylinder, S is height of annular channel between diffuser of inner cylinder and wall of gas-liquid nozzle flown with gas on diameter D_o, β is acute angle of slope to gas-liquid nozzle vertical, and α is bevel angle. Bevel of gas- liquid nozzle wall may be made on the head surface and intermediate cylinder diffuser surface. To prolong service life, inner surface of gas-liquid nozzle are covered with wear resistant coating. EFFECT: injector may be used in heat and mass-exchange apparatuses: dryers, evaporators, etc. Improved design. 4 cl, 2 dwg