Design and Technological Calculation of a Combined Electric Baromembrane Apparatus for Separating Solutions in Chemical
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DESIGN AND TECHNOLOGICAL CALCULATION OF A COMBINED ELECTRIC BAROMEMBRANE APPARATUS FOR SEPARATING SOLUTIONS IN CHEMICAL PRODUCTION PROCESSES S. I. Lazarev, S. V. Kovalev, I. V. Khorokhorina, and M. I. Mikhailin
UDC 66.081.6
A developed design of a combined-type electro-baromembrane apparatus for separating solutions into two successive circuits is presented. As well as allowing differential ion separation in the flows of cathode and anode permeate in the form of bases and acids at the first stage of separation, the baromembrane design leads to reduced hydraulic resistance per unit volume and improved solution separation efficiency. The methodology used for calculating the technological characteristics of the apparatus is described. Keywords: electrobarometric membrane apparatus, calculation methodology, membrane, separation, solution.
The main current development trends in the field of electromembrane technologies are associated with the development and improvement of electric baromembrane apparatus and devices, as well as with the development of new methods of electromembrane and electric baromembrane separation of solutions and types of membranes [1–5]. Traditional designs of electric baromembrane devices are characterized by a number of disadvantages. For example, the apparatus presented in [6, 7] does not provide the necessary quality or sufficient efficiency of solution separation, as well as lacking differential ion separation in the flows of cathode and anode permeate of an intermediate separation stage. The apparatus presented in [8] is characterized by a low differential ion separation efficiency in the flows of the cathode and anode permeate at an intermediate separation stage, high hydraulic resistance per unit volume of the apparatus, and low separation quality of industrial solutions. The present paper proposes a new combined electric baromembrane apparatus for separating solutions used in chemical industries (see Fig. 1) along with a method for calculating the apparatus parameters. The developed combined electric baromembrane apparatus consists of two modules: flat-chamber and tubular. The Advantages of the New Apparatus Include: the possibility of differential ion separation in the flows of cathode and anode permeate (in the form of bases and acids) at the first stage of separation; reduction of hydraulic resistance per unit volume of the apparatus; improved quality and efficiency of solution separation. The Combined Electric Baromembrane Apparatus is Operated as Follows. Under a transmembrane pressure exceeding the osmotic pressure of the dissolved substances, the initial solution is fed through the inlet of a separated solution 7 (located on the bottom cover 3) into the first separation Tambov State Technical University, Russia; e-mail: [email protected]. Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 56, No. 6, pp. 32–35, June, 2020. 0009-2355/20/0506–0475
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Springer Science+Business Media, LLC
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S. I. LAZAREV, S. V. KOVALEV, I. V. KHOROKHORINA,
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