The dust in the coal-fired flue gas is usually invisible to the naked eye. When we look at dust under a microscope, we will find that their shapes are different and irregular. They look like blades with different diameters. According to the classification of particle size, it can be divided into coarse dust (particle size greater than 40m), fine dust (particle size between 10un-40nm and 40nm) and obvious fine dust (less than 10un). Due to different particle sizes, the impact on PPS filter bags is also different. The dust also contains a large amount of acid and alkali substances with a small diameter. After being intercepted by the PPS filter bag, it will not fall off under the action of the filtering wind speed, stay on the surface of the filter material or enter the interior of the filter material. When combined with water vapor, the PPS filter bag will be pasted, causing chemical changes to the filter material and forming corrosion. Therefore, when selectingthe filter material of the PPS filter bag, the dust particle size can be considered.
What are the cleaning requirements and precautions for PPS filter bags?
PPS filter bags generally refer to filter bags with temperature resistance of more than 200 ℃, chemical corrosion resistance, good filtration performance in harsh environments and long service life, which can be used in smelting, chemical industry, building materials, thermal power generation, garbage incinerators, coal-fired boilers and other fields. What are the cleaning requirements and precautions for PPS filter bags? Let’s have a look!
1. PPS filter bag shall be cleaned by high-frequency vibration to remove large and small particles entering the surface of the dust removal bag as much as possible, avoid damaging the color fastness of chemical fiber entanglement, and maintain the excellent anti falling performance of the dust removal bag.
2. Repair the dust filter bag damaged due to use to ensure the recycling rate of PPS dust filter bag.
3. Clean the chemical experimental solution of PPS filter bag, take the bag sample, use technical instruments to detect the oil stain in the dust removal bag, and select appropriate cleaning materials to avoid damaging the dust removal bag.
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