SU1511866A1 - Electrode-type fluid heater - Google Patents

Abstract

The invention relates to electrical engineering and can be used for heating, evaporation, carrying out processes of thermal desorption of dissolved gases from electrolyte solutions. The purpose of the invention is to increase the specific power of the heater and increase the life of the electrodes. The heater consists of alternating coaxial tubular electrodes 1 and interelectrode insulators 2, having a smaller inner diameter than the electrodes. The interelectrode insulators are equipped with additional dielectric inserts occupying a part of the electrode space, made in the form of a removable nozzle 3 of equal internal diameter with interelectrode insulators, and the electrodes are perforated partitions 4. 1 Il.

Description

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(21) 4329232 / 24-07

(22) 19, P.87

(46) 30.09.89, Beale. 36

(71) Branch 9 of the 1st Tomsk Polytechnic Institute named after SM Kirov

(72) V.P.Shptsulnn, S.N.Grishii and V.M. Grigoriev

(53) 621.365.33 (088.8)

(56) Author's testimony of the USSR No. 635626, cl, H 05 B, 1976.

USSR Author's Certificate No. 944163, class, B 01 D 1/00, 1982.

(54) ELECTRODE HAFPEBATEHb FLUID MEDIUM .

(57) The invention relates to electrical engineering and can be used for heating, evaporation, conducting

processes of thermal desorption of dissolved gases from electrolyte solutions. The purpose of the invention is to increase the power density of the heater and increase the life of the electrodes. The heater consists of a series of coaxial tubular electrodes 1 and interelectrode insulators 2, made of a smaller internal diameter than the electrodes. The interelectrode insulators are equipped with additional dielectric inserts occupying a part of the electrode space, made in the form of a removable nozzle 3 of equal internal diameter with interelectrode insulators, and the electrodes are perforated partitions 4. 1 cells.

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The invention relates to electrical engineering and can be used for heating, evaporation, and carrying out thermal desorption processes for dissolved gases from electrolyte solutions.

The aim of the invention is to increase the power density of the heater and the service life of the electrodes,.

The drawing shows the design of the electrode heater,.

The heater consists of alternating electrodes made of sicylated graphite or other electrode materials and interelectrode insulators 2, for example, of fluoroplastic Interelectrode insulators 2 are made with removable end nozzles 3 embedded in the cavity of electrodes 1 with a uniform gap (removable end caps 3) can be made with nozzles from one piece). Electrodes 1 are provided with perforated partitions 4 and metal / ly clamps 5, to which current leads 6 are attached, Electrodes 1 and holders 5 are fastened together with thread teeth. The end caps 3 placed in the lower part of the insulators 2, are provided with openings 7 | placed in a horizontal plane at the level of the end of the electrodes to remove gas from the vapor vapor that is absorbed during the heating of the solution, Electrodes 1 and insulators 2 are attached to each other with flanges 8 and studs 9, between flange .9 and extreme electrodes 1 and placed electrical insulating sleeves 10; The flanges 11 are welded to the flanges to enter the initial solution and 12 to exit the heated solution,.

The heater operates as follows.

The initial cold solution is supplied to the heater through pipe I under pressure from the pressure vessel. Due to the pressure, the solution rises

up the heater. As it goes; from the nozzle 11 to the nozzle 12, the solution is not heated by passing through it the alternating electric current supplied by the current leads 6 to the electrodes 2, in order to establish current leaks beyond the heating chamber, the extreme electrodes are grounded the electrodes placed between them are connected to the fa of the alternating current circuit.

The products of electrolysis and the vapors formed upon heating and boiling are removed from the near-electron zone through the openings 7. The solution, heated to the desired temperature, is removed from the heater through the nozzle 12.

The presence of additional dielectric inserts in the form of removable nozzles and perforated partitions near the electrodes leads to a decrease in the shape factor of the electrode group, and hence to an increase in the fair power.

The diameter of the holes of the electrodes' partitions and their number must be chosen in such a way that their total area is equal to the cross-sectional area of the insulator in order to ensure the same rate of solution flow in the cross-section of the interelectrode insulator and in the openings of the partition. As regards the place of installation of partitions, this will depend on the currents flowing through the interelectrode insulators.

The dimensions of the partitions and nozzles can be different depending on the electrical conductivity of the solution, the corrosion properties of the electrode materials, the rials, the size of the electrodes and the insulator, and are determined experimentally in each case.

Since perforated partitions not only increase the working surface of the electrodes, but also, together with electric nozzles, lead to a decrease in the value of;;: the shape factor of the electrode group, and hence an increase in the specific power of the heater, the uniformity of current density distribution across the working surface improves. electrode, which in sum with the increase in the working surface due to perforated partitions reduces the corrosion rate of the electrodes and increases their service life.

Claims (1)

Invention Formula Electrode fluid heater containing tubular electrodes installed along the longitudinal axis and interdiscipulator insulators interlaced with them, made in the form of tubes, the internal diameter of which is smaller than the internal diameter of the electrodes, due to 515118666 Increase the power density of the heating nozzles whose internal diameter tel and increase the service life of the electr-equal to the inner diameter of the insulator, The insulators are made with a borehole, and each of the electrodes is made with electrodes paired in the cavity with an equal-to-pendant axis. perforated-dimensional clearance removable face septum.