METHODS FOR ONLINE MONITORING TO BE IMPLEMENTED IN AN AMMONIUM THIOSULFATE PRODUCTION PLANT

Methods have been developed for automatic on-line monitoring that are ready to be implemented in an industrial plant for ammonium thiosulpha te production. The three main goals of this research were: (a) develop ment of methods for monitoring major components in the production proc ess, namely 60% ammonium sulphite (AS) and ammonium thiosulphate (ATS) at the reactor inlet and outlet, respectively; (b) development of a m ethod for the determination of a minor component at the reactor outlet (0.7% AS) in the presence of a high concentration of ATS (60%); (c) f ull automation of the overall system.