Types and characteristics of high-temperature dust removal bags: the operating temperature can be 204 degrees, and the dust-containing flue gas can only be filtered and separated at a higher temperature above the acid dew point, and it is treated by burning and calendering or Teflon coating. PPS high temperature dust filter bag has strong integrity retention and inherent chemical resistance, which can maintain good filterability in harsh environments and achieve good use results. If the thickness of the initial layer is not enough, sparks in the flue gas will flow in, or the dust will heat up, which may also cause the dust bag to burn out the holes. The burning of the dust bag is mainly reflected in the newly replaced dust bag online. Since no pre-coating is performed after online replacement, the high-temperature flue gas carries sparks and directly touches the bag, which is easy to burn and damage the dust bag.