As a common industrial equipment, dryers are widely used in food, chemical, pharmaceutical and other industries. During the drying process, a large amount of dust and exhaust gas will be generated, which will cause pollution to the environment. In order to solve this problem, plastic sintered plate dust collectors are widely used in the exhaust gas treatment of dryers. So, how to calculate the air volume of the plastic sintered plate dust collector on the dryer? This article will give you a detailed answer.
1. The working principle and advantages of the plastic sintered plate dust collector
The plastic sintered plate dust collector uses the plastic sintered plate as the filter element, and separates the dust particles from the gas through the adsorption, interception, diffusion and other effects of the filter plate. Compared with traditional bag filters, plastic sintered plate dust collectors have the advantages of higher filtration efficiency, lower resistance loss, longer service life and lower maintenance costs. Therefore, in the exhaust gas treatment of dryers, plastic sintered plate dust collectors have been widely used.
2. Calculation method of dryer exhaust air volume
The calculation of the exhaust air volume of the dryer needs to consider the model of the dryer, the nature of the material, the drying process and other factors. Generally speaking, the exhaust air volume of the dryer can be calculated by the following formula:
q = v × 3600
Among them, q is the exhaust air volume (m h), v is the material handling capacity of the dryer (t h), and the material density (kg m).
When calculating the exhaust air volume, factors such as the concentration, temperature and humidity of the dust in the dryer exhaust gas also need to be considered. These factors will have an impact on the selection and use of the sintered plate dust collector.
Formula for calculating air volume: Design air volume q is usually calculated according to the following formula: q = f c v where: q - design air volume in m h; f - the effective filtration area of the plastic sintered plate dust collector, the unit is m; c - filter wind speed, according to different industries and working conditions, the general value is 05-2.0m/min；v – the volume of gas to be treated per unit of time, i.e. the total volume of flow by taking into account the amount of material handled and the concentration of dust.
3. The selection of plastic sintered plate dust collector matches the air volume
When using a plastic sintered plate dust collector on the dryer, it is necessary to select the type according to the exhaust air volume, dust concentration, temperature, humidity and other factors. When selecting, it should be ensured that the air volume of the dust collector is greater than or equal to the exhaust air volume of the dryer to ensure the dust removal effect.
At the same time, it is also necessary to consider the filtration area of the dust collector, the material of the filter plate, the cleaning method and other factors. The filtration area should be selected according to the exhaust air volume and dust concentration to ensure that the dust collector has sufficient filtration capacity. The material of the filter plate should be selected according to the tail air temperature and humidity to ensure that the filter plate has good corrosion resistance and high temperature resistance. The cleaning method should be selected according to the nature of the dust and the cleaning effect to ensure the stable operation performance of the dust collector.
Fourth, practical application case analysis
Take, for example, a food processing plant that uses a dryer to process food ingredients. The exhaust air volume of the dryer is about 5000m h, and the dust concentration is high. In order to reduce the environmental impact of exhaust emissions, the plant chose a plastic sintered plate dust collector for treatment.
In the selection process, the manufacturer comprehensively considered the exhaust air volume, dust concentration, temperature and humidity and other factors, and finally selected a plastic sintered plate dust collector with large filtration area, high temperature resistance and corrosion resistance. In the actual operation process, the dust collector shows a good dust removal effect, and the exhaust emission concentration is greatly reduced, which meets the environmental protection requirements.
V. Conclusions
The calculation of the air volume of the plastic sintered plate dust collector on the dryer needs to be comprehensively considered according to the dryer model, material properties, drying process and other factors. In the process of selection, it should be ensured that the air volume of the dust collector is greater than or equal to the exhaust air volume of the dryer, and the appropriate filter plate material and ash cleaning method should be selected according to the exhaust temperature, humidity and other factors. Through reasonable selection and matching, the plastic sintered plate dust collector can play a good role in the exhaust gas treatment of the dryer and reduce the impact of exhaust emissions on the environment.