Abstract
The thermal rectification method, which comprises the condensing of vapors on steps and subsequent exposure of the heat flow on condensate before it is introduced into the falling reflux, has been studied. The results of the study of strengthening ethanol–water mixture upon the condensation of vapors on the heat-transfer surface have been presented. The basic parameters of the process have been revealed, which ensure the strengthening of the mixture on the stage upon condensate evaporation, and the empirical relationship for determining the effectiveness has been obtained. The studies of the thermal rectification of the ethanol–water mixture have been performed in a column with 24 contact stages made of horizontal plates, and conditions have been established that provide the greatest efficiency. The evaluation of thermal rectification contribution to the overall efficiency of the stage is performed that allows one to intensify the process by up to four times.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Olevskii, V.M., Ruchinskii, V.R., Kashnikov, V.M., and Chernyshev, V.I., Plenochnaya teplo- i massobmennaya apparatura (Film Heat and Mass Transfer and Apparatuses), Olevskii, V.M., Ed., Moscow: Khimiya, 1988.
Malyusov, V.A., Lotkhov, V.A., Bychkov, E.V., and Zhavoronkov, N.M., Heat and mass transfer in distillation, Teor. Osn. Khim. Tekhnol., 1975, vol. 9, no. 1, p. 3.
Aleksandrov, N.A. and Groisman, S.A., Heat and mass transfer in distillation in a bubbling layer, Teor. Osn. Khim. Tekhnol., 1975, vol. 9, no. 1, p. 11.
Umrikhin, E.D. and Konstantinov, E.N., Thermal effects in thre distillation of edible ethanol, Izv. Vyssh. Uchem. Zaved., Pishch. Tekhnol., 1999, no. 1, p. 55.
Zemtsov, D.A. and Voinov, N.A., Rectifying column based on the thermal distillation effect, Khvoinye Boreal’nye Zony, 2015, vol. 33, no. 3, p. 153.
Voinov, N.A. and Pan’kov, V.A., RF Patent 2437698, 2011.
Voinov, N.A., Pan’kov, V.A., and Voinov, N.A., RF Patent 2445996, 2012.
Voinov, N.A., Zhukova, O.P., Pan’kov, V.A., and Voinov, N.A., Ethanol distillation in columns with a spiral prismatic packing, Tekh. Tekhnol. Pishch. Proizvodstv, 2012, vol. 4, no. 27, p. 95A.
Voinov, N.A., Zhukova, O.P., Lednik, S.A., and Nikolaev, N.A., Mass transfer in gas–liquid layer on vortex contact stages, Theor. Found. Chem. Eng., 2013, vol. 47, no. 1, p. 55.
Voinov, N.A., Zhukova, O.P., and Nikolaev, A.N., Heat transfer in condensation and boiling in a tubular film evaporator, Theor. Found. Chem. Eng., 2012, vol. 46, no. 4, p. 359.
Stabnikov, V.N., Peregonka i rektifikatsiya etilovogo spirta (Ethanol Distillation and Rectification), Moscow: Pishchevaya Prom-st., 1969.
Stabnikov, N.A., Etilovyi spirt: Spravochnik (Ethanol: A Handbook), Moscow: Pishchevaya Prom-st., 1977.
Nikolaev, N.A., Zhavoronkov, N.M., and Malyusov, V.A., Design of distillation columns with cocurrent-flow–vortex contact devices, Teor. Osn. Khim. Tekhnol., 1974, vol. 8, no. 6, p. 853.
Voinov, N.A. and Nikolaev, A.N., Teplos’em pri plenochnom techenii zhidkosti (Heat Withdrawal in Liquid Film Flow), Kazan: Otechestvo, 2011
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.A. Voinov, D.A. Zemtsov, O.P. Zhukova, 2017, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2017, Vol. 51, No. 2, pp. 174–181.
Rights and permissions
About this article
Cite this article
Voinov, N.A., Zemtsov, D.A. & Zhukova, O.P. Study of thermal rectification in a column with low mass transfer on the steps. Theor Found Chem Eng 51, 191–198 (2017). https://doi.org/10.1134/S0040579517020130
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0040579517020130