What happens when the dust collection bag is flammable?
High-temperature dust collector bag
(1) Mars burning the dust bag
In addition to high-temperature combustion, the dust bag in the Martian chimney has also been severely damaged. The dust collector cloth bag is a dry dust collector, which is a dust removal device that USES a bag filter element made of fiber braid to trap solid particles in the dust-containing gas. The principle of action is that the dust particles intersect due to the inertial force that collides with the fibers when they are rolled around the fibers of the filter fabric. As coke ovens, drying ovens, chain ovens, dust collectors, electric ovens, blast furnaces, mixed iron ovens, etc., during the production process, a lot of Mars will be mixed with combustion gases, as Mars can not be processed in time, especially when the surface of the dust collecting bag when the dust layer is thin, Mars will burn through the dust bag, forming an irregular hole. However, when the dust layer on the surface of the dust bag is very thick, Mars will not directly burn the dust bag but will cause a dark trace of cooking on the surface of the dust bag.
(2) high-temperature shrinkage powder bag
Another type of damage caused by high-temperature combustion gases in the dust collection bag is contraction at high temperatures. Although the usage temperature of each filter material is different, when the flue gas temperature exceeds its usage temperature, when the warp contraction rate is too large, the size of the dust bag is length will be smaller and the bottom of the dust bag will grab the skeleton and be forcibly damaged. If the contraction of the zonal head of the dust collector bag is too great, the radial size of the dust collector bag will be reduced, and the dust collector bag will be firmly attached to the skeleton, and cannot even be removed from the skeleton. Therefore, the dust bag is always in a state of tension, resulting in shrinkage, hardening, and brittleness of the dust bag, which accelerates the loss of strength of the filter bag and reduces the life of the filter bag. Since the dust collector bag will roll firmly into the skeleton after deformation, the dust collector bag is difficult to deform during the cleaning process, which is not conducive to spraying the cleaning powder, resulting in high resistance of the bag.
(3) dust collection bag after dust storage and combustion
The high-temperature dust is collected in the ash hopper. If not discharged in time, the dust will accumulate in the hopper for a long time, causing the temperature in the hopper to continue to rise. The powder bag becomes brittle and lasts under high-temperature baking for a long time. Burns, especially flammable substances in the dust.The dust collector equipment to separate the dust from the flue gas. The performance of the dust collector is expressed by the amount of gas that can be processed, the loss of strength when the gas passes through the dust collector, and the dust removal efficiency. He burned in the bucket of ashes, burning the bag of dust. With the popularity of bag dust collectors, bag dust explosion accidents are also on the rise.
