A PROCESS FOR PRODUCTION OF SODIUM CARBONATE LYE WITH SODIUM SULPHITE FOR BRINE TREATMENT IN CHLOR- ALKALI INDUSTRY

摘要

A method for the manufacture of ammonia free sodium carbonate or soda ash lye of concentration 50 - 380 gpl with 2000 - 6000 ppm (29) of sodium sulphite from caustic soda solution and carbondioxide from the flue gas coming from the caustic concentration plant burning hydrogen and furnace oil/LSHS as fuel and utilization of this sodium carbonate or soda ash lye for the treatment of calcium and neutralization of chlorine in brine in a Chloralkali industry. Figure 1 [IN-CHE-2013-01694A]