In water treatment, Medium sized ozone generator Whether it can work effectively depends on whether there are external factors interfering with its normal work. Therefore, in order to ensure the efficiency and reliability of the medium-sized ozone generator, the following problems should be paid attention to when designing the application system of the medium-sized ozone generator.
(1) the feed gas of the generator shall not contain hydrocarbons, corrosive gases and any other substances that may react in the oxygen / ozone / corona environment, so as not to endanger or damage the safety of the equipment.
It is well known that the three elements of explosion are fuel, oxidant and fire, and there are already two in the corona environment of medium-sized ozone generator, namely oxidant and fire. Therefore, it is necessary to prevent the feed gas from containing hydrocarbon fuel materials. If hydrocarbons are present, a hydrocarbon analyzer must be installed to cut off the power supply when the hydrocarbon concentration is close to 25% of the lower explosion limit (le1).
Fluorocarbons, such as polytetrafluoroethylene or coolant, decompose in corona to form fluorine, which erodes the glass dielectric and accelerates dielectric damage. Circulating coolant around the outside of the corona may leak through the seal and enter the corona space. As a result, a layer of paint or coating is formed on the surface of the dielectric. When this happens, the dielectric must be cleaned regularly as the coating reduces the efficiency of ozone generation.
In addition, the feed gas should also be filtered out of about 5 μ m particles to prevent small desiccant powder or other particles from entering the corona area of the generator. In order to avoid affecting corona efficiency.
(2) the supply pressure cannot be changed without control. Due to the induction of corona power by air pressure and the influence of voltage applied at both ends of dielectric, the generator will be unreliable due to large range of pressure changes. Exceeding the corona power range will cause the fuse or automatic circuit breaker to open. Exceeding the applied voltage peak can also lead to premature dielectric failure.
(3) it is necessary to prevent a large amount of water from entering the ozone generator system.
The floating valve of the water seal air compressor or the condensation valve on the air dryer is blocked, which will lead to corrosion of the generator chamber. A large amount of water in corona chamber will lead to corona concentration, high current density and local heating of dielectric, which will lead to premature dielectric failure. Even if the detection device cuts off the power supply of corona before the water enters the corona chamber, the impurities in the water will deposit on the surface of the module, and these impurities must be removed before continuing operation. Operational failures or errors may force process water to flow at least from the ozone contact tank to the generator
Corona element contaminated or dielectric damaged. In addition, the system design and operating procedures must prevent combustible corrosive gases and water vapor returning from the ozone contact tank from entering the generator.