Russian Journal of Applied Chemistry, 2009, Vol. 82, No. 4, pp. 730−735.
Pleiades Publishing, Ltd., 2009.
Original Russian Text
N.A. Voinoa, N.A. Nikolaev, A.V. Kustov, 2008, published in Khimicheskaya Promyshlennost’, 2008, Vol. 85, No. 8, pp. 413−419.
PROCESSES AND DEVICES
OF CHEMICAL MANUFACTURES
Hydrodynamics and Mass Exchange
in Vortex Rectifying Column
N. A. Voinov
, N. A. Nikolaev
, and A. V. Kustov
Institute of Biophysics, Siberian Department of Russian Academy of Sciences, Krasnoyarsk, Russia
Kazan State Technological University, Kazan, Russia
Institute of Fundamental Biology and Biotechnology, Krasnoyarsk, Russia
Received November 13, 2008
Abstract—Results of an investigation of the hydrodynamics and the mass exchange on the contact steps with
tangential vortex generator at a rectiﬁ cation of the ethanol−water mixture are presented. Dependences for
computation of the hydraulic resistance, an interphase surface, and the efﬁ ciency were obtained.
computation and designing of the vortex trays of the
rectifying column are deﬁ cent occurred we performed
an additional research.
The ethanol-water rectiﬁ cation occurred in the column
composed of 22 vortex contact steps with a distance
between the trays of 100 mm (Fig. 2). The diameter of
the vortex generator d was 88 mm, a channel number n
, 36, a channel width, 1 mm, height l, 8 mm, a slope of
the channels to a generating line, 23°.
Large amount of the vortex contact steps are attractive
for designing due to their high productivity and efﬁ ciency.
The most typical schemes of the contact vortex devices
are showed on Fig. 1. The contact steps equipped by
the tangential vortex generator (Fig. 1c), the simplest
in the production, and of comparatively low hydraulic
resistance and of high efﬁ ciency have been studied in
this paper. Gas moving through tangential channels
of the vortex generator obtains rotary motion, and
disperses into the liquid forming the revolving gas-liquid
layer where intensive division of vapor bubbles and
their renovation occur. Since the data for an available
Fig. 1. Schemes of the vortex contact devices (a) axial vortex generator, (b) blade vortex generator; (c, d) tangential vortex generator.