製塩のための熱法による海水濃縮の単純化モデルによる検討
2003 年 57 巻 5 号 p. 356-361
詳細
2003 年 57 巻 5 号 p. 356-361
A simplified model is developed in order to analyze multiple-effect distillation process of sea water, and the feasibility of concentration with the high performance required for salt manufacture is investigated. The performance ratio, which is defined as the ratio of the total distillate rate to the feed steam rate, required for the concentration with the same energy as that consumed in a current electrodialysis and multi-effect distillation combined system is estimated to be approximately 14, from the mass and energy balances of the system. This ratio is shown to be feasible from the analysis based on the model. Thorough heat recovery from distillate and vapor generated due to flash evaporation during the effects is suggested to be indispensable for the attainment of the required performance.
