RU2016841C1 - Ozonizer - Google Patents

Abstract

FIELD: ozone production. SUBSTANCE: ozonizer has power-supply source and dielectric pipe concordantly wrapped with two coil electrodes. with the outer electrode connecting the power-supply source by its front tip, and the inner one - by its end. EFFECT: increased efficiency, simpler construction. 3 dwg

Description

 The invention relates to devices for producing ozone and can be used in the treatment of industrial and domestic wastewater, in the disinfection of drinking water, in chemical technology, as well as in other sectors of the economy.

 A tubular ozonizer is known, the corona electrode of which is made in the form of a tape, mounted on the outer surface of the dielectric pipe in a spiral.

 The disadvantage of this ozonizer is the low specific productivity of ozone.

 Closest to the invention, the technical solution chosen as a prototype is a high-frequency ozonizer, in which the inner electrode is made in the form of a spiral and is connected with a high voltage, and the mass electrode is an outer tube isolated from the inner electrode by a quartz tube.

 The disadvantage of the prototype are the low yield of ozone, a high level of energy consumption.

 The aim of the invention is to reduce energy consumption and increase the specific productivity of the ozonizer.

 This goal is achieved by the fact that in the tubular ozonizer, consisting of a power source, external and internal electrodes and a dielectric tube between them, both electrodes are made in the form of spirals, wound according to the outer and inner sides of the dielectric tube.

 Compared with the prototype, the ozonizer has new features and meets the criterion of "Novelty." The implementation of the electrodes in the form of spirals, wound according to the outer and inner sides of the dielectric tube, is not known from the patent and scientific literature, which confirms the compliance of the claimed ozonator with the criterion of "Significant differences". In addition, this meets the criterion of "positive effect", since both the external and internal sides of the dielectric tube are used to generate ozone, which leads to an increase in the specific productivity of the ozonizer. The use of the resonance properties of spiral electrodes can reduce the energy consumption for the production of ozone.

 In FIG. 1 shows the basic construction of an ozonizer; in FIG. 2 is an ozonator equivalent circuit; in FIG. 3 is an equivalent ozonator circuit.

 The ozonizer contains a dielectric tube 1, an external electrode 2 and an internal electrode 3. The electrodes are made in the form of wound according to spirals. The beginning 4 of the outer electrode and the end 5 of the inner electrode are connected to the power source 6. The end of the outer electrode and the beginning of the inner electrode remain open. The ozonizer also contains a tube 7 with longitudinal ribs, inside of which a cooling agent flows - water 8.

 The spiral electrodes of the ozonizer as a whole can be represented by a circuit with distributed parameters that take into account the magnetic and electrical connections between them.

The electrode equivalent circuit shown in FIG. 2 contains the following elements:
9 - spiral inductance per unit length;
10 - resistance of the spiral per unit length;
11 - capacity between the spirals per unit length;
12 - conductivity per unit length, taking into account losses in the dielectric between the spirals and in the discharge gaps.

 The joint solution of partial differential equations according to the circuit of FIG. 2 under the assumption of a strong magnetic coupling between the helices, one can find in explicit form the expression for the input resistance.

To simplify the analysis of processes in the ozonizer in FIG. Figure 3 shows the equivalent circuit synthesized by the input resistance, where
13 - equivalent resistance, which determines the loss in the conductors of the spirals;
14 - equivalent inductance of the electrodes;
15 - equivalent capacity;
16 - equivalent conductivity, taking into account losses in the dielectric between the spirals and in the discharge gaps.

 The ozonizer works as follows. When voltage is applied from the power source, an electric field arises between the electrodes. As a result, a smoldering surface discharge forms on the outer and inner surfaces of the dielectric tube and oxygen molecules undergo electron bombardment.

 From the circuit of FIG. 3 it is obvious that stress resonance can occur at the resonant frequency. Equivalent parameters 13-16 allow you to find the resonant frequency and input impedance in this mode. Ozone generation is accompanied by oscillations at the resonant frequency. Moreover, the work is carried out on the site with negative differential resistance of the current-voltage characteristics of the electric discharge. This leads to an increase in the output of ozone per unit of energy input, i.e. to reduce energy consumption.

 The proposed ozonizer allows you to increase specific productivity and reduce energy consumption. Specific productivity increases by about 2 times, as the removal of ozone occurs both from the inside and from the outside of the dielectric tube.

 A working physical model of an ozonizer is made in the scientific laboratory of MPEI. The AC power source provides a voltage of 5 kV with a frequency of 6.5 kHz on the ozonizer electrodes. Experimental studies have been carried out. The results obtained confirm the feasibility of the goal of the invention.

Claims (1)

 A tube-shaped OZONATOR consisting of a power source, an external and an internal electrode and a dielectric tube between them, the internal electrode being made in the form of a spiral and located inside the dielectric tube, characterized in that, in order to reduce energy consumption and increase specific productivity, the external electrode is made in in the form of a spiral wound on the outside of the dielectric tube, with the beginning of the outer electrode and the end of the inner electrode connected to a power source.

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