RU2081058C1 - Method and arrangement for cooling ozonator - Google Patents

Abstract

FIELD: ozone production. SUBSTANCE: method includes water cooling of low-voltage and air cooling of high-voltage electrodes. Cooling water is fed by gravity. Heated water is withdrawn by means of convection, cooled through expansion at reduced pressure and repeatedly returned by gravity into electrode cooling step so providing water circulation mode. Air is forced through owing to excessive pressure of ozonation waste in mass exchange apparatus, heated air being withdrawn through ventilation system. Ozonator-cooling arrangement containing low- voltage electrode cooling jacket, high-voltage electrode with inner cavity, inlet and outlet water and air fittings, supply and withdrawal pipelines for water and air, is additionally provided with expansion pan installed above ozonator and connected through its inlet with water withdrawal pipeline and through its outlet with water-supply pipeline for low-voltage electrode cooling jacket. In this case, ozonator outlet is connected with cooling air-supply pipeline, and air-withdrawal pipeline is engaged with jet pump. EFFECT: improved efficiency of ozonator. 2 cl, 1 dwg

Description

 The invention relates to methods for air and liquid cooling of ozone generators and combined cooling devices.

 Closest to the proposed technical essence is a method of cooling an ozonizer using forced pumping of water in a “jacket” for cooling a low-voltage electrode and pumping air under pressure through the internal cavity of a high-voltage electrode, with cold water and air being supplied to the ozone formation zone (a.s. 1567514 "Ozonator").

 This method is implemented in an ozonizer, made in the form of two coaxial electrodes separated by a dielectric, in which water is supplied from the pump to the cooling jacket of the low-voltage electrode and discharged into the water supply network through the upper fitting, and air under pressure is constantly pumped inside the high-voltage electrode. This method has, in addition to the above disadvantages, a high energy intensity, which reduces the overall efficiency of the ozonizer.

The task of the invention is to remedy these disadvantages. The goal is solved:
1) by introducing feedback in a closed loop of the water cooling system to ensure the natural circulation of water in the "jacket" of cooling the low-voltage electrode due to convection without draining it into the water supply network;
2) through the use of ozonation process wastes in an adjacent system (mass transfer apparatus) for cooling a high-voltage electrode without additional energy costs and with the simultaneous partial disposal of ozonation wastes.

 As a device for implementing the proposed method, an ozonizer with water cooling of a low-voltage electrode is used, the water discharge nozzle of which is connected by a pipe to the inlet of the expansion tank, and the outlet of the latter is connected to the water supply nozzle in the electrode cooling jacket and by air cooling of the high-voltage electrode, the axial cavity of which is connected a pipeline with a jet apparatus of the ventilation system on the one hand, and the other connected to the atmosphere.

 The device is illustrated in the drawing, which shows the pneumohydraulic circuit of the combined cooling of the ozonizer.

 The device comprises an ozonizer 3 with inlet and outlet fittings, an expansion tank 1 located above the ozonizer, and a jet pump 2 connected to the ventilation of the mass transfer apparatus 4.

 The method is as follows. During operation of ozonator 3, the water in the cooling jacket is heated and begins to circulate naturally due to convection through expansion tank 1, where it is cooled, and flows by gravity back into the jacket, and cooling air is taken from the atmosphere and pumped by ejection of the jet pump 2 operating from excessive pressure of the mass transfer apparatus 4, with the output of which it is connected through ventilation.

 The proposed method can significantly reduce energy consumption for cooling ozonizers and eliminates the possibility of breakdown of the dielectric due to the formation of condensate when the ozonizer is turned off. In addition, it becomes possible to exclude degassers from the composition of ozonation stations.

Claims (2)

 1. The method of cooling the ozonizer, including water cooling of the low voltage and air cooling of the high voltage electrodes, characterized in that the cooling water is supplied by gravity, the heated water is diverted by convection, cooled by expansion under reduced pressure, and again fed by gravity to cooling, organizing water self-circulation, and the air is pumped due to the excess pressure of the ozonation waste in the mass transfer apparatus, and the heated air is discharged through the ventilation system.  2. A device for cooling an ozonizer, comprising a cooling jacket for a low-voltage electrode, a high-voltage electrode with an internal cavity, nozzles for supplying and discharging water and air, pipelines for supplying and discharging water and air, characterized in that it is equipped with an expansion tank installed above the ozonizer and connected to the input with a water drain pipe, and an outlet with a water supply pipe to the low-voltage electrode cooling jacket, while the ozonizer output is connected to the cooling air supply pipe, and the pipe the air outlet is connected to the jet pump.