When industrial dust removal faces harsh working conditions such as high temperature and high corrosion, the PPS (polyphenylene sulfide) dust filter bag, with its unique performance, becomes a key solution, safeguarding clean production in complex environments.
1. Hardcore Material Performance
The melting point of PPS fiber is about 285°C, with a continuous service temperature reaching 190°C, and it can momentarily withstand 220°C. It can calmly cope with high – temperature flue gas in industries such as coking, waste incineration, and thermal power generation.
Its chemical corrosion resistance is excellent, showing strong tolerance to acids, alkalis, organic solvents, etc. Especially in environments with sulfur – containing flue gas (such as flue gas in coal – fired power plants and coking plants) and chlorine – containing waste gas (in waste incineration plants), it is not prone to fiber degradation and embrittlement, ensuring the stable structure and filtration performance of the filter bag.
2. Filtration Advantages and Challenge Response
The PPS filter bag itself has a certain flame retardancy. In working conditions with open flames or high – temperature sparks (such as dust removal in waste incinerators), it can reduce the risk of fire and improve system safety.
For high – humidity and high – viscosity dust, the combination of the smooth surface and chemical stability of PPS can reduce dust adhesion. For example, in dust removal of flue gas after wet desulfurization, it can effectively collect fine dust, and the dust cleaning is relatively smooth, maintaining a low operating resistance and ensuring dust removal efficiency. However, PPS will slowly undergo oxidative aging in a long – term high – temperature and oxygen – containing environment. Measures such as optimizing the oxygen content in flue gas and selecting PPS fibers with anti – oxidation treatment need to be taken to alleviate this.
3. Typical Applications and Values
In waste – to – energy power plants, PPS filter bags are used to treat complex flue gas generated by incineration, withstanding high temperature, corrosion, and dust impact, ensuring the compliance emission of exhaust gas; in the coke oven flue gas treatment of coking plants, they collect coke powder, sulfide and other pollutants, helping environmental protection and production coordination. After a coking plant adopted PPS filter bags, the particulate matter emission concentration in flue gas decreased from exceeding the standard to below 10mg/m³, and the service life of the filter bags exceeded 2 years. It not only solved the environmental protection problems but also reduced the equipment operation and maintenance costs, highlighting its irreplaceability in harsh working conditions.
