A comprehensive analysis of the working principle of various ozone generators
Release time: April 25, 2019 17:01:09
large Ozone generator It has been widely used, but what is the working principle of it, do you know? The following small series for you to interpret. According to the way of ozone generation, there are three kinds of ozone generators: high voltage discharge, ultraviolet radiation and electrolysis. High voltage discharge generator This kind of ozone generator uses a certain frequency of high-voltage current to create a high-voltage corona electric field, which makes the oxygen molecules in or around the electric field react electrochemically to produce ozone. This kind of ozone generator has the advantages of mature technology, stable operation, long service life, large output of ozone, up to 1kg / h , so it is the most widely used ozone generator in related industries at home and abroad. There are several types of ozone generators in the following types 1. According to the cooling mode, there are water cooling type and air cooling type. When the ozone generator works, it will produce a lot of heat energy it needs to be cooled otherwise, ozone will decompose at the same time due to high temperature. The water-cooled generator has good cooling effect, stable operation, no attenuation of ozone, and can work continuously for a long time, but its structure is complex and its cost is slightly higher. The ozone cooling effect is not ideal. High performance ozone generators with stable overall performance are usually water-cooled. Air cooling is generally only used for low and medium grade ozone generators with small ozone production. Water cooled generator should be selected as far as possible. 2. According to the high-voltage electric frequency of the generator, there are three types: power frequency (50-60Hz), intermediate frequency (400-1000hz) and high-frequency ( 1000Hz). Power frequency generator has been basically withdrawn from the market due to its large size and high power consumption. The medium and high frequency generators have the advantages of small size, low power consumption and large ozone production. 3. According to the structure of ozonator, there are two kinds of ozonators, i.e., gap discharge type, DBD type and open type. The structure characteristic of gap discharge type is that ozone is generated in the gap between the inner and outer electrodes. Ozone can be collected and output in a centralized way, and its concentration is high, such as for water treatment. The electrode of the open generator is exposed in the air, and the ozone generated by it diffuses directly into the air. Due to the low concentration of ozone, it is usually only used for air sterilization in small space or surface disinfection of some small objects. The gap discharge generator can replace the open generator. However, the cost of gap discharge ozone generator is much higher than that of open type. 4. According to the gas raw materials used, there are oxygen type and air type. Oxygen type is usually supplied by oxygen cylinder or oxygen generator. Air type usually uses clean and dry compressed air as raw material. Because ozone is produced by oxygen, and the content of oxygen in the air is only 21%, so the concentration of ozone produced by air generator is relatively low, and the purity of oxygen in bottle or oxygen generator is more than 90%, so the ozone concentration of oxygen generator is higher. 5. According to the dielectric materials, there are several common types of ceramic plate, ceramic tube, glass tube and enamel tube. At present, ozone generators made of various dielectric materials are sold in the market, and their performances are different. Glass dielectric is the earliest material used for artificial ozone production with low cost and stable performance, but its mechanical strength is poor. Ceramics are similar to glass, but they are not suitable for processing, especially in large ozone machines. Enamel is a new type of dielectric material with dielectric and electrode. It has high mechanical strength and high precision. It is widely used in large and medium-sized ozone generators, but its manufacturing cost is high.
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