STUDY OF THE PROCESS OF PROCESSING AMMONIUM SULFATE FROM DISTILLATE

Abstract

To study the composition of distilled liquid of soda production and distillers received his sones. The solid composition of soda production is as follows: СаСО₃, Са(ОН)₂, СаСl₂, NaCl, CaSO₄. The thermodynamic analysis of reactions of interaction of calcium sulfate with ammonium sulfate is carried out. Gibbs energy was calculated in the temperature range 298-1373K and the possibility of the process with the formation of calcium carbonate and ammonium sulfate was shown.

During the study, the optimal modes of obtaining ammonium sulfate and calcium carbonate from the distillate using ammonium carbonate were determined: stoichiometric consumption of NH₃ and CO₂ 100%, the duration of the process 30-45 minutes, the process temperature 70-80OC. The degree of transition of calcium sulfate to ammonium sulfate is і 99.7%. The content of ammonium sulfate in the dry product is of 99.61% (NH₄)₂SO₄ in dry sediment 99.98% of C_aCO₃.

The content and presence of product (NH₄)2SO4 and CaCO₃ in the sediment were confirmed by XRF and SEM.