Abstract:The study and calculation of non-process elements accumulation in P-RC APMP process were carried out, and the formation and component of scale in evaporator which is used for concentrating the pulping waste liquor were analyzed. The results showed that the order of accumulation amount of non-process elements from high to low was Si, Ca, K, Cl, Mg, S, P, Fe, Mn, Al, in which, Si and Ca/Mg salts accounted for nearly 30% separately. The amount of non-process elements should be controlled in order to slow down the formation of the evaporator scale. |