caa a22 4500 445850396 CHVBK 20180317145411.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1134/S0040579510051379 doi (NATIONALLICENCE)springer-10.1134/S0040579510051379 Liquid-vapor distribution of acids in HNO3-H2O and HNO3-H2O-HA systems in evaporators [Elektronische Daten] [B. Zilberman, M. Makarychev-Mikhailov, D. Ryabkov, V. Saprykin, I. Toropilov, N. Guzyuk] Equilibrium data on the liquid-vapor distribution for HNO3-H2O, HNO3-HF-H2O, HNO3-CH3COOH-H2O, and HNO3-HCl-H2O are given. Equations for the calculation of the acid distribution coefficients in the first three systems have been obtained and a mathematic model for nitric acid rectification containing the impurities has been derived, excluding the case of azeotropic rectification. The model could not be applied to the process based on ox-red reactions such as in the HCl-HNO3 system. The HNO3 liquid-vapor distribution during uninterrupted evaporation in the apparatus with bottom circulation is in equilibrium, while that in direct-flow evaporators with ascending and descending flows is characterized by a significantly higher distribution coefficient because of the linear evaporation effect. Pleiades Publishing, Ltd., 2011 evaporation nationallicence rectification nationallicence liquid-vapor equilibrium nationallicence apparatus nationallicence nitric nationallicence hydrofluoric nationallicence acetic and hydrochloric acids nationallicence Zilberman B. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut Makarychev-Mikhailov M. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut Ryabkov D. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut Saprykin V. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut Toropilov I. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut Guzyuk N. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/4(2011-08-01), 530-536 0040-5795 45:4<530 2011 45 11236 https://doi.org/10.1134/S0040579510051379 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0040579510051379 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zilberman B. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Makarychev-Mikhailov M. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Ryabkov D. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Saprykin V. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Toropilov I. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Guzyuk N. NPO Khlopin Radium Institute, Vtoroi Murinsky pr. 28, 197021, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/4(2011-08-01), 530-536 0040-5795 45:4<530 2011 45 11236 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer