ABSORBER TO PURIFY HYDROGEN FLUORIDE PRODUCTION FURNACE GASSES AND METHOD OF PREPARATION OF TIP GRANULES FOR IT Russian patent published in 1995 - IPC

FIELD: furnace gasses purification. SUBSTANCE: absorber has cylindrical body with cooling shell. Spraying joint and gas distributing grating are mounted in body. Gas distributing grating has mounted on it perforated truncated cones. Angle of cones inclination to horizontal part of gas distributing grating is less than 60 dwg. Tip, made of porous granules of copper-nickel alloy, is set on grating. Before loading in absorber tip is preliminary treated by fluorine. Treatment is exercised in series according to following mode: under temperature of 25 C - within 2 hours, of 100 C - within 2 hours, 200 C - within 2 hours. EFFECT: absorber and method are used for furnace gasses purification. 3 cl, 1 dwg