METHOD OF CARBONIZATION OF AMMONIATED BRINE IN PRODUCTION OF SODA ASH AMMONIAL METHOD AND CARBONIZATION COLUMN FOR METHOD EMBODIMENT Russian patent published in 2003 - IPC

FIELD: methods and carbonization columns for carbonization of ammoniated brine in production of soda ash by ammonial method; applicable in chemical industry. SUBSTANCE: method includes reaction of ammoniated and partially carbonized brine with carbon dioxide gas with production of sodium bicarbonate suspension; division of ammoniated and partially carbonized brine into two flows; supply of the first flow with temperature of 43-58C and ammonia content of 76-85 kg/cu.m to 4.5-6.5m below the upper end of carbonization column; additional saturation of the second flow with ammonia up to its content amounting to 94-110 kg/cu.m and supply with temperature of 40-55C to point where concentration of combined ammonia in ammoniated brine amounts up to 21-25 rg/cu.m. Carbonization column has absorption and cooling barrels, inlet pipes of ammoniated and partially carbonized brine and carbon dioxide gas, and outlet pipes of sodium bicarbonate suspension and exhaust gas. Absorption and cooling barrels alternate one-by-one or by groups. Upper cooling barrel is installed at distance equaling 0.45-0.65 of column height measuring from its base. Column is provided with inlet pipe of additional ammoniated brine. Said inlet pipe is installed at distance equaling 0.68-0.73 of column height measuring from its base. EFFECT: higher degree of sodium utilization in process of carbonization and produced crystals of high- quality sodium bicarbonate. 7 cl, 1 dwg, 1 tbl