The advantage of the intermediate frequency furnace bag dust collector is high dust removal efficiency, generally above 99%. The dust concentration in the outlet gas of the intermediate frequency furnace bag dust collector is within a few 10 mg/m3, and it has a high classification efficiency for fine dust with sub-micron particle size. The medium frequency furnace bag dust collector has a wide range of air volume processing. The small one can reach several m3 per minute, and the large one can reach tens of thousands of m3 per minute. It can be used to remove dust from flue gas in industrial furnaces and reduce the emission of atmospheric pollutants. This intermediate frequency furnace bag dust collector has a simple structure and is easy to maintain and operate. On the premise of ensuring the same high dust removal efficiency, the cost is lower than that of an electrostatic precipitator.

The flue gas collection system of the intermediate frequency furnace bag dust collector is composed of a low-position movable dust hood, feeding equipment, steel tapping equipment and dust removal equipment. The low-position movable dust hood covers the operating platform and the tapping pit, allowing the entire smelting production process of the intermediate frequency furnace to be carried out in the low-position movable dust hood, achieving effective collection of flue gas throughout the process. When feeding, the material is added through the feeding equipment, and the material is topped up several times according to production needs, which solves the problem of difficulty in collecting smoke during driving and feeding. When tapping, the intermediate frequency furnace platform flips over and goes directly into the ladle on the flat car of the tapping track. The tapping process is completed in the fume hood, which solves the problem of partial leakage of flue gas from the local dust hood when tapping.

1. Select filter materials for intermediate frequency furnace dust collector

Selection of filter materials is an important step in ensuring the normal operation of bag dust collectors. The selection of filter material is a process of selecting the best one based on the comparison of purification conditions. The filter material material of the dust collector bag is one of the core components of the bag dust collector. Therefore, in the selection process, it is necessary to select filter materials with high cost performance. .

2. Select the dust cleaning method for the intermediate frequency furnace dust collector

Bag dust collectors are mainly divided into three categories according to dust cleaning methods: mechanical vibration, reverse air flow and pulse injection bag dust collectors. Its cost, dust removal efficiency, dust cleaning effect and filter bag service life usually increase in order. For systems that do not allow interruption of the production process and require stable operation of the dust collector, high purification efficiency, and long service life of the filter bag, priority should be given to pulse injection bag dust collectors. On the contrary, for dust-containing gases that are easy to purify, when the dust removal system fails to shut down for maintenance and has little impact on production, the investment is small, and the flue gas processed is small, mechanical vibrating bag dust collectors can be considered. For dust removal systems that handle a large amount of flue gas, have relatively stable physical and chemical properties of the flue gas, are easy to clean, and have little impact on production due to failure and shutdown for maintenance, counter-flow bag dust collectors can be considered.

3. Select the model of intermediate frequency furnace dust collector

After determining the dust cleaning method, first ensure that the safety factor of 1.05/1.1 times for flue gas treatment is met. Then select 2/3 types of bag dust collectors based on the previous calculation results and the actual situation. By the way, it is pointed out here that if the bag diameter is too small, the cleaning effect may not be good, because the amount of dust attached after cleaning is large. If the bag diameter is too large, it may cause insufficient back-blowing air or spray air power, which will also affect the dust cleaning effect. At present, foreign bag dust collectors are developing towards large bag diameters. Choosing large bag diameters can certainly reduce the floor space, the number of bag dust collector accessories, and reduce costs, but it must be based on ensuring the dust cleaning effect. Therefore, Botou Keming Environmental Protection recommends that the bag length of mechanical vibration bag dust collector is 1.5/3 m and the bag diameter is about 130; the bag length of pulse injection bag dust collector should not exceed 6 m and the bag diameter is about 130/200; counter air flow back blowing The bag length of the bag dust collector should not exceed 8m, and the bag diameter is about 200/300.

4. Determine the size of the intermediate frequency furnace dust collector

First, determine the total filtration area of the bag dust collector based on the amount of flue gas processed and the filtration wind speed of the dust collector, and then determine the air-to-cloth ratio (filtration wind speed), which refers to the air-to-cloth ratio of different dust cleaning methods when meeting roughly the same purification requirements. . The actual properties of industrial smoke and dust are complex, and the value of the air-to-cloth ratio of the pulse injection bag dust collector is very conservative. Therefore, as a preliminary selection, it is recommended to use more conservative empirical values: the filtration wind speed of mechanical vibration bag dust collector is 0.5/0.9 m/min; the filtration wind speed of reverse airflow bag dust collector is 0.4/0.8 m/min; the filtration wind speed of pulse jet bag dust collector is 0.4/0.8 m/min. The filtration wind speed of the blown bag dust collector is 0.8/1.2m/min. Then calculate the number of filter bags based on the total filter area, bag length, and bag diameter. The ranges of bag length, bag diameter and filter bag center distance for different cleaning methods are also different.

The company is located in Botou City, Hebei Province, known as the "Hometown of Yali". The company is close to the Beijing-Shanghai Railway, Beijing-Shanghai Expressway and 104 National Highway in the east, and is connected to the 106 National Highway and Shihuang Expressway in the west. The geographical location is superior and the transportation is very convenient. convenient. Longjing Environmental Protection takes science and technology investment as the guide, excellent quality as guarantee, and sophisticated equipment and advanced technology as its core strength. It is a professional company integrating the development, design, production, installation and service of environmental engineering and environmental protection equipment.