Ozone generator technology was introduced into China for decades. In recent years, it has achieved rapid progress and development. There are more and more ozone manufacturers of various sizes. With the slow popularization of ozone generators, the application fields of ozone are becoming more and more extensive. However, there are more than ten ozone generator manufacturers in Guangzhou. The ozone generator manufacturers are mixed, and it is inevitable that there will be unscrupulous ozone production suppliers drilling holes, which will be small and large and will be false. Use unethical means of competition to deceive consumers for profit. When purchasing ozone machine, customers should not only consider the price, but also consider the scale of the ozone generator manufacturer, the quality of the output, the brand, the after-sales, and comprehensive consideration in many aspects, so as to avoid the problem of quality at a low price or a small charge ozone machine.
The following is a practical case: a garment printing and dyeing enterprise in Jiangsu Province, China increased production and transformation during the renovation of the old process. The design used a 3000g/h ozone generator for the ozone decolorization bleaching process. After purchasing the equipment nameplate with a 3000g/h output of the ozone generator at a price far below the market price, it was found that the design effect was not achieved, and the relevant personnel went to the site to measure the data:
The ozone generator has a gas volume of 85m3/h-88m3/h, the concentration is not measured (not well detected at the site), the pressure is 0.06-0.08Mpa, and the single-phase current is 14A-16A. Judging from the current value alone, the ozone machine has a power of less than 10 kW, even though the most advanced technology in the world only reaches the output of 600-700 g/h. Remind customers to pay attention to the purchase of ozone generators, and purchase industrial ozone generators in a simple and convenient way to observe and monitor, so as to avoid the purchase of ozone generators due to lack of ozone-related knowledge or intentional misleading by others.
One of the simplest and straightforward ways to determine ozone production is to calculate the power at the current value. According to the gas source system, the ozone generator can be divided into an air source ozone generator and an oxygen source ozone generator. The air source ozone generator is basically an air compressor, a refrigerating dryer, an (adsorption dryer), a precision filter, and an oxygen generator. The source system has more oxygen system (oxygen generator or liquid oxygen tank), and there are six main factors affecting the output of the ozone generator: concentration, gas volume, pressure, power, current, and temperature.
Ozone production (g / h) = concentration × gas volume (under standard atmospheric pressure) ozone equipment reaction chamber generally has a certain pressure, then ozone generator output (g / h) = concentration × gas volume × absolute pressure (1 standard atmospheric pressure of the gas pressure ).
According to the formula, the actual production of ozone is determined by concentration, gas volume and pressure. Most ozone generators have an airflow meter, a pressure gauge, and an ammeter voltmeter. The gas volume, pressure, and current of the ozone machine can be easily determined to determine ozone production.
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The ozone concentration is determined according to the specifications, structural materials and discharge parameters of the equipment. The ozone concentration can be measured according to the ozone concentration measuring instrument or by chemical titration such as the iodometric method. The ozone concentration is in mg/L or g/m3.
The international top ozone technology adopts a quartz glass tube cavity. The ozone source of the technology air source system is 20mg/L; the oxygen source system ozone generator concentration is 100mg/L; when the liquid oxygen is used as the gas source to supply the ozone generator, the ozone concentration can be It reaches 120mg/L or more. In order to meet the market demand, some ozone generator manufacturers can report that the ozone concentration produced by their own factories can reach hundreds or even hundreds of mg/L. At the current level of the ozone industry, under the same conditions of the same output and gas volume, it can be achieved at present. The ozone concentration is also about 180mg/L.
Can be judged by a pressure gauge. Under certain pressure conditions, the ozone power source is more likely to discharge and excite ozone. Therefore, the higher the ozone chamber reaction chamber pressure, the higher the ozone concentration and the higher the current. Controlling the pressure of the ozone reaction chamber is intended to control its discharge current. Ozone pressure unit Mpa, 0.1Mpa = 1 kg. This pressure refers to the internal pressure of the reaction chamber of the equipment at one atmosphere, so when calculating the amount of ozone, it should be set to calculate under atmospheric pressure.
According to the above relationship, the output = concentration × gas volume x pressure, for example, the concentration of an ozone device is 80 mg / L, the gas rotameter shows 2 m3 / h, the pressure gauge shows 0.07 Mpa, the actual output of the device is 80x 2 x (0.7+1) = 272 g / h. 3, the amount of gas
The ozone gas unit is m3/h or L/min (1m3/h=1000L/60min). The gas volume can be observed by the flow meter. The flow rate on the flow meter is the flow rate under standard atmospheric pressure. Therefore, the actual ozone generator output gas at a standard atmospheric pressure should be: the flow meter displays the gas volume reading x (the pressure gauge shows the gas volume +1).
For example, if the ozone generator flowmeter shows 10m3/h and the pressure gauge shows 0.08Mpa (0.1Mpa=1kg), then the actual ozone outflow at a standard atmospheric pressure = 10x (0.8+1)=18m3/h.
According to the formula, when the output is constant, the gas volume is increased, the concentration is decreased, the gas volume is decreased, and the concentration is increased. In the same way, for the same ozone equipment, the rest of the control is unchanged, and the concentration also changes when the gas volume is adjusted.
The industrial ozone generator power supply is basically 220v/380V50HZ. The ozone generator basically adopts a high-frequency inverter power supply. The output of 1kg (1000g) air source ozone generator is basically maintained at about 20KW, corresponding to single-phase current 30A; the output is 1kg oxygen. The power of the source ozone generator is basically maintained at about 10 KW, and the corresponding single-phase current is about 15 A. (Different manufacturers will be different) 5. The current calculation method is as follows:
Single-phase current (A) = power ÷ 220V.
Three-phase current (A) = power ÷ 380V ÷√ 3.
When ozone production is different, the output and current are proportional. The most effective and quick way for users to determine ozone production is to detect current. A current clamp meter can be used to analyze the judgment. If an ozone generator manufacturer tells you that their equipment produces 1kg and consumes less than 5 degrees, how to save power, please don't believe it.
The ozone generator generates ozone through high-voltage discharge, which generates heat during high-voltage discharge and affects the concentration of ozone. Therefore, large-scale ozone generators are equipped with a cooling water system, and large-scale ozone generators are equipped with cooling water radiators to reduce cooling. The amount of water used.