EVAPORATOR Russian patent published in 1998 - IPC

FIELD: alumina production. SUBSTANCE: evaporator has remote heating chamber, separator, boiling chamber, and circulating tube. The latter couples lower solution chamber positioned under heating chamber and separator. Boiling chamber consists of two parts. Lower part is installed on tube plate of heating chamber, and upper part of chamber is bent at an angle of 90 deg. It is coupled to separator through branch pipe which is extended inside separator as a guide directing the solution flow downwards to circulating tube, thereby increasing the solution circulation speed in evaporator. Constructionally, the above-mentioned branch pipe may be made as sloping shear in which branch pipe inside separator terminates or as bent down branch pipe. EFFECT: enhanced circulation of solution in evaporator. 1 dwg