China's ozone industry has been introduced for decades of development, and in recent years, it has made rapid progress and development, more and more ozone manufacturers of various sizes, and with the slow popularization of ozone generators, the application field of ozone is more and more wide. However, there are more than ten ozone generator manufacturers in Qingdao, and ozone generator manufacturers are mixed, which inevitably has no good ozone production suppliers to exploit loopholes, fill small, and paste false labels. The use of unethical competitive methods to deceive consumers and make huge profits. Customers in the purchase of ozone machine, not only to consider the price, but also to consider the size of the ozone generator manufacturers, production quality, brand, after-sales, comprehensive comparative consideration, so as not to buy at a low price to buy quality problems or small charge large ozone machine.
The following is a practical case: Jiangsu garment printing and dyeing enterprises invested more output in the old process transformation process, designed to use 3000g/h ozone generator for wastewater ozone decolorization and bleaching process. After the output of 3000g/h of the ozone generator at a much lower price than the market price on the equipment nameplate, it was found that the ozone generator did not achieve the design effect.
The gas volume of the ozone generator is 85m3 / H-88m3 / h, the concentration is not determined (can not be detected on site), the pressure is 0.06-0.08Mpa, and the single-phase current is 14A-16A. From the current value point of view, the power of the ozone machine is less than 10 kilowatts, and even the most advanced technology in the world can only reach 600-700 grams of output power per hour. When purchasing ozone generators, remind customers of precautions, and purchase industrial ozone generators in a simple and convenient way of observation and monitoring, in order to avoid mispurchasing due to lack of ozone-related knowledge or others intentionally misleading ozone generators.
The simplest and most direct way to determine ozone production is to calculate power from the current value. According to the air source system, ozone generators can be divided into air source ozone generators and oxygen source ozone generators. Air source ozone generators are basically equipped with air compressors, freeze dryers, (adsorption dryers), precision filters and oxygen systems as well as more oxygen generation systems (oxygen generators or liquid oxygen tanks). There are six main factors that affect the output of ozone generators: concentration, gas volume and pressure. Force, power, current and temperature.
Ozone production (g/h) = concentration * Gas volume (standard atmospheric pressure)
Ozone equipment reaction chamber generally has a certain pressure, and then ozone generator output (g/h) = concentration * gas volume * absolute pressure (1 standard atmospheric pressure outlet pressure).
According to this formula, the actual ozone production is determined by the concentration, gas volume and pressure. Most ozone generators have inlet flowmeters, pressure gauges, ammeter voltmeters, which can simply judge the gas flow, pressure and current of the ozone machine to initially determine the production of ozone.
Ozone concentration is determined by equipment specifications, structural materials and emission parameters. Monitoring of ozone concentration can be determined by an ozone concentration detector or by chemical titration such as iodometry. Unit of ozone concentration mg/L or g/m3.
The world's top ozone technology uses quartz glass tube cavities, and the ozone generator concentration in the air source system is 20 mg/L; The concentration of ozone generator in oxygen source system is 100 mg/L; When liquid oxygen is used as an air source to supply ozone generators, the ozone concentration can reach 120 mg/L. In order to meet market demand, some ozone generator manufacturers have made unreasonable reports that their ozone concentrations can reach hundreds or even hundreds of mg/l. At the current level of the ozone industry, ozone concentrations can currently be about 180mg/L for the same production and gas volume.
Ozone gas unit m3/h or L/min (1m3/h=1000L/60min). Gas can be observed through the flowmeter, the flow on the flowmeter is the flow at standard atmospheric pressure, so the actual ozone generator gas output under a standard atmospheric pressure should be: the flowmeter shows gas reading × (the pressure gauge shows gas degree +1).
For example, the ozone generator flowmeter displays 10m3/h, and the pressure gauge displays 0.08Mpa (0.1Mpa= 1kg), then the actual ozone output under a standard atmospheric pressure =10× (0.8+1) =18m3/h.
According to the formula, if the output is unchanged, the gas volume increases, the concentration decreases, the gas volume decreases, and the concentration increases. Similarly, for the same ozone equipment, the rest of the control is unchanged, and the concentration changes when the gas volume is adjusted.
It can be judged by the pressure gauge. Under certain pressure conditions, the ozone power supply is easier to discharge ozone, so the higher the pressure of the ozone generator reaction chamber, the higher the ozone concentration and the higher the current. The purpose of controlling the pressure of ozone reaction chamber is to control its discharge current. Ozone pressure unit Mpa, 0.1Mpa = 1 kg. The pressure refers to the internal pressure of the reaction chamber at an atmospheric pressure, so when calculating the volume of ozone gas, it should be set in an atmospheric pressure environment.
According to the above relationship, output = concentration * gas volume * pressure, for example: ozone equipment concentration is 80mg/L, gas rotameter display 2m3 / h, pressure gauge display 0.07Mpa, the actual equipment output is 80 * 2 * (0.7 + 1) = 272g/h
The industrial ozone generator power supply is basically 220v/380V50HZ, the ozone generator basically uses high-frequency inverter power, the output of 1kg (1000g) air source ozone generator power is basically maintained at about 20KW, and the corresponding single-phase current is 30A; The output of 1kg oxygen source ozone generator power is basically maintained at about 10KW, and the corresponding single-phase current is about 15A. (Different manufacturers will vary)
The calculation is as follows:
Single-phase current (A) = Power ÷220V.
Three-phase current (A) = power ÷380V÷√3.
When the ozone production is different, the production and current are directly proportional. The most effective and fast way for users to determine ozone production is to detect the current. The current clamp meter can be used to analyze and judge. If an ozone generator manufacturer tells you that their equipment consumes less than 5 degrees of power for 1kg, how to save electricity, please do not believe it.
Ozone generator generates ozone through high voltage discharge, in the process of high voltage discharge will produce heat, thus affecting the concentration of ozone, so large ozone generators are equipped with cooling water system, large ozone generator will be equipped with cooling water radiator to reduce the amount of cooling water.
