Improved ozone generator

Abstract

The invention relates to an improved compact ozone generator with a high production capacity (over 100g O3 / h), using a set of generation cells with an indirect plasma cooling system via a cooling fluid that prevents overheating and increases production capacity.

Description

[0001] IMPROVEMENT IN OZONE GENERATOR FIELD OF THE INVENTION

[0001] The present invention patent describes an improvement in an ozone generator through dielectric barrier discharge. More specifically, it comprises a compact and large-scale ozone generator (above 100gO3 / h), with generation cells or reactors surrounded by a cooling system that prevents overheating and increases production capacity. BACKGROUND OF THE INVENTION

[0002] Ozone (O3) is an allotrope gas with high oxidizing and disinfecting properties. One of its most important applications is in water and wastewater treatment.

[0003] Ozone, which is highly unstable, is produced by exposing oxygen to enormous amounts of energy, which can be through electrical discharge, ultraviolet radiation, or the corona effect. When oxygen passes through a reactor known as an ozone generation cell, a dielectric barrier discharge or plasma generation (depending on the generator technology) is generated. This generates a large number of electrons with enough energy to break down oxygen molecules, releasing oxygen ions. These ions rearrange and transform into ozone (O3).

[0004] In the ozone generation cell, due to the need for intense excitation energy for ozonation, very high heating occurs, which affects the equipment's efficiency. In low-capacity generators, cooling is achieved through air, thus ingressing particles from the external environment, which is unsuitable for the process. In larger equipment, cooling significantly affects efficiency, so ozone generators utilizing the corona effect are the most widely used.

[0005] To provide an alternative device, the Applicant developed an improvement to a compact, high-capacity ozone generator using a set of generation cells or reactors with an indirect plasma cooling system using a cooling fluid. SUMMARY

[0006] The invention provides an improvement in an ozone generator that has a cooling system for the generation cell and indirect cooling of the plasma through a cooling fluid, maintaining the temperature below 30 o W.

[0007] The invention provides an improvement in an ozone generator that uses a power between 1,300 and 2,600W, very low for this level of generation.

[0008] The invention provides an improvement in an ozone generator with compact dimensions and large generation (above 100gO3 / h).

[0009] The invention provides an improvement in an ozone generator with a set of 2 to 20 generation cells for the production of 50 to 500 O3g / h. BRIEF DESCRIPTION OF THE FIGURES

[0010] Figure 1A shows the front view of the ozone generator that is the subject of this patent.

[0011] Figure 1B shows a side view of the ozone generator that is the subject of this patent.

[0012] Figure 2A represents an exploded view of the ozone generation cell.

[0013] Figure 2B shows the cross-section of the ozone generation cell.

[0014] Figure 2C shows the longitudinal section of ozone generation.

[0015] Figure 2D shows details of the ozone generation cell. DETAILED DESCRIPTION OF THE INVENTION

[0016] The improvement in ozone generator, object of the present invention, comprises a cabinet equipped with a first module (1) for the arrangement of the cooling unit provided with a side ventilation cover (5), said cooling unit preferably arranged in the upper portion; a control panel (2); a second module (3) where ozone generation cells (13) connected to a high voltage strip (12) are arranged and a third module where a frequency amplifier (11) and a voltage transformer (14) are arranged.

[0017] A frequency regulator and amplifier (11) are located on the control panel (2).

[0018] In the second module (3) a regulator and flow meter (8) are arranged.

[0019] Each ozone generation cell (13) includes a metal tube (13.6) for conducting electricity and a dielectric tube (13.4) with a channel (13.5) for the passage of concentrated oxygen that will be subjected to an electric discharge to form ozone.

[0020] The metal tube (13.6) and the dielectric tube (13.4) are surrounded by a metal cooling tube (13.2) with an external surface provided with helical ribs that form channels for the displacement of the cooling fluid (13.3), supplied by a pipe that derives from the cooling unit (1).

[0021] The cooling tube (13.2) is surrounded by a larger diameter metal cover (13.1) to form a channel for the circulation of the cooling fluid.

[0022] The metal tube (13.6) is equipped with a screw for connecting the phase (13.10), located at one end, called the phase screw (13.10) associated with an insulation head (13.11).

[0023] In the insulation head (13.11) an inlet nipple (13.7) is arranged for the entry of oxygen that is directed to the channel (13.5) formed between the metal tube (13.6) and the dielectric tube (13.4). At the opposite end of the insulation head (13.11) an outlet nipple (13.8) is arranged in communication with the channel (13.5).

[0024] The dielectric tube (13.4) can be made of glassy or ceramic material.

[0025] The electrical energy passes through the very high frequency amplifier (11), raising it to 4 KHz, regulated according to production needs. After passing through the frequency amplifier (11), the electrical energy passes through the voltage transformer (14), producing high voltage, raising it to 24 KV, which can also be regulated according to production needs. The electrical energy at very high frequency and voltage is directed to the high voltage strip (12), being distributed to the ozone generation cells (13).

[0026] High voltage is applied to the metal tube (13.6), passing to the second metal tube (13.2) and directed to ground (13.9).

[0027] The oxygen entering the inlet nipple (13.7) passes through the channel (13.5) formed between the metal tube (13.6) and the dielectric tube (13.4). In the channel (13.5), the oxygen receives a high electric discharge from the metal tube (13.6), so that the oxygen molecules are broken, with the formation of plasma, followed by regrouping to form ozone, which is released at the outlet nipple (13.8). During ozone generation, the cooling fluid circulates in the channel (13.3) to reduce the temperature.

Claims

1 / 1 CLAIMS:

1. IMPROVEMENT TO AN OZONE GENERATOR characterized by comprising: a) a first module (1) for arranging the cooling unit provided with a side ventilation cover (5); b) a control panel (2) with frequency regulator and amplifier (11); c) a second module (3) with regulator and flow meter (8) and presenting ozone generation cells (13) connected to a high voltage strip (12), said ozone generation cell (13) which includes: - a metal tube (13.6) and a dielectric tube (13.4) with a channel (13.5), said metal tube (13.6) and dielectric tube (13.4) surrounded by a metal cooling tube (13.2) with an external surface provided with helical ribs (13.3); - a metal cover (13.1) surrounding the cooling tube (13.2); - a screw for connecting the phase (13.10) arranged at one end of the metal tube (13.6), said phase screw (13.10) associated with an insulation head (13.11) with inlet nipple (13.7) in communication with channel (13.5) and outlet nipple (13.8) in communication with channel 13.5; d) a third module where a frequency amplifier (11) and a voltage transformer (14) are arranged.

2. IMPROVEMENT IN OZONE GENERATOR, according to claim 1, characterized in that the dielectric tube (13.4) is made of vitreous or ceramic material.

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