The selection of filter material for desulfurization and denitrification dust collectors: The selection of filter material for desulfurization and denitrification dust collectors is very important. Of course, the selection of filter material should be based on the different characteristics of dust cleaning energy and deformation of desulfurization and denitrification dust collectors, and different structural varieties of filter material should be selected. The specific analysis is as follows: 1. Chamber back blowing type desulfurization and denitrification dust collector: This type of desulfurization and denitrification dust collector belongs to the low kinetic energy dust cleaning type, and thin filter material can be selected. This type of filter material has a gentle texture, is easy to deform, and has stable size. There is no difference in the selection of filter materials for both internal and external filters in the bag filter for chamber back blowing type dust collectors. Large and medium-sized dust collectors should preferably use satin (or diagonal) woven filter media, and thin needle felt filter media reinforced with base cloth can also be used in situations. Small dust collectors are preferred to use thin needle felt filter materials with good breathability, with a unit area mass of 350-400g/m2. Alternatively, double weave or double fabric filter materials can also be used. 2. Mechanical vibration type desulfurization and denitrification dust collector: The characteristic of this type of desulfurization and denitrification dust collector is that the force of the vibrating dust layer is small but the frequency is high. In order to facilitate energy transmission and ensure sufficient vibration force on the filtering surface, thin, smooth, and soft filter material should be selected. For example, synthetic satin or twill fabrics with a thickness of 0.3-0.7mm, a unit area mass of 300-350g/m2, a filtration speed of 0.6-1.0m/min, can be increased to 1.0-1.5m/min for small units. Treatment measures for tower blockage of desulfurization, denitrification and dust collector: When sulfur tower blockage occurs in the desulfurization, denitrification and dust collector, if the suspended sulfur is too high, process analysis should be carried out immediately to identify the cause of the high suspended sulfur and partially filter the desulfurization to reverse the passive situation. At the same time, reducing production load, increasing the circulation of desulfurization solution, and increasing the amount of "titanium cyanide cobalt" can play a role in washing the tower, and the amount can be increased after the system is restored. The tower blockage caused by rich salt can be treated according to the different solubility of rich salt. Temporary measures can be taken to heat the temperature of the desulfurization solution to around 46 ℃, usually for about 3 hours. The rich salt on the packing inside the tower will dissolve and be carried out due to the increase in temperature. After leaving the tower, a part of the desulfurization solution can be cooled. When cooled to around 10-15 ℃, a large amount of rich salt will precipitate, and then the desulfurization solution can be sent back to the system, which will reduce the rich salt content in the desulfurization solution and return the system to normal operation. The method to deal with the gap at the splicing of the desulfurization and denitrification dust remover: the gap is easy to appear at the splicing of the desulfurization and denitrification dust remover during installation, which should be dealt with in a timely manner. The treatment methods are as follows: 1. Paste foam: roughen the shell, apply resin and stick foam. 2. Strengthen ring fixation: Use connecting plates or bolts to fix the ring, and then perform layer laying treatment after fixation. 3. Reinforcement installation: Tighten the reinforcement and fix it firmly. There are thickness requirements when laying the layer. 4. Short pipe installation: Short pipe installation is used for fixing and laying. 5. Lining construction: There are requirements for the width, length, and thickness of the lining, which can be laid in layers.
