Abstract
Calculation of working temperature differences, steam consumption and evaporation of each pan is performed for evaporation of salt field brine (before saturation) with quadruple effect vacuum evaporators. Rate of evaporation per unit heating surface is about 20% greater in seed addition to the 1st. pan (thus using this effect for concentration) and about 16% greater in seed addition to the 4 th pan than in feeding brine into bittern (parallel feed) total evaporation per unit steam consumption in seed addition to the 4 th pan is nearly equal to the value in feeding brine into bittern. butthe value in seed addition to the 1 st pan is much smaller, Taking into account scale is apt fo form in seed addition to the 1st. pan it seems that seed addition to the 4 th pan is preferable.
