Title: Recovery of Na Cl and NH_4Cl by Ternary Phase Diagram Theory from Condensation Wastewater
Abstract: By means of isothermal method,solid-liquid phase equal relationship of ternary water-salt system of Na Cl-NH4Cl-H2 O is studied at 0 ℃,10 ℃ and 60 ℃,the solubility data of Na Cl and NH4 Cl in water are obtained and phase diagram is drawn.Using the ternary phase diagrams theory,Na Cl and NH4 Cl are recovered from the condensation mother waste by a crystallization method.This paper discusses the principle of the recycling process and introduces recycling technological process and feature parameters.The purity of Na Cl recycled can reach 95%,total recovery rate more than 77%,the purity of NH4 Cl above 92%,total recovery rate more than 40% and products can reach standard of HG / T 5462—2003 and GB / T 2946—2008 respectively.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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