TWO-COLUMN MASS-TRANSFER APPARATUS Russian patent published in 1997 - IPC

FIELD: food-processing, pharmaceutic and chemical industries; manufacture of building materials for processing vegetable raw material, granulated materials and polydispersed materials. SUBSTANCE: two-column mass-transfer apparatus includes V-shaped housing of rectangular section with bottom made in form of arc of spiral, hollow columns with solid phase loading and unloading devices, liquid phase supply and drain branch pipes and pulser. Column of apparatus provided with unloading device wedge-type has flow divider which divides cavity into two passages with equivalent sections; sum of these sections is no less than area of section of column at level of apex of wedge of divider; apparatus is also provided with agitator with float drive operated by reciprocating motion of flow imparted by pulser. Besides that, angle of divider at wedge apex is lesser than angle of repose of moist solid phase. EFFECT: enhanced efficiency. 2 cl, 3 dwg