- Alkaline corrosion
As mentioned in the third element about dust analysis, the flue gas contains a large amount of alkaline substances such as CaO, MgO, etc., which are deliquescent dust, and the small diameter is microscopic dust, which is easy to enter under the action of wind speed Inside the fiber, some are directly discharged into the air, but part of the dust still remains inside the fiber to block the filter hole. At the same time, the smoke contains water vapor. When the water vapor is combined with the deliquescent dust, the sticky filter hole makes the filter bag impermeable and affects the filter bag Service life.
- Oxygen content
It is not surprising that the flue gas contains oxygen, but for different filter materials, we must consider: oxygen content, temperature. At the limit temperature, when oxygen is present, oxygen will slowly oxidize the filter bag, making the filter bag blue and brittle, directly reducing the service life of the filter material, such as PPS needle felt at 120-180℃, And the condition is very good when used under the condition of large oxygen content and water vapor content. However, when the temperature increases by 10°C, its anti-oxidation ability is rapidly reduced by half, and its anti-acid and alkali resistance is also reduced by half, which seriously affects its life. Therefore, when customizing different filter materials, the oxygen content is an indicator that cannot be ignored. The higher the oxygen content, the higher the water vapor content.
- Air distribution
The distribution of airflow affects the normal use and service life of the dust filter bag. If the airflow distribution is unreasonable during the design of the dust collector, the local airflow is too large, and the dust filter bag will work under such conditions for a long time, which will cause damage to the filter bag, such as: the filter material in a room is damaged or several filters part of the bag is destroyed, so the distribution of airflow cannot be ignored. The usual solution is to design a deflector in the dust collector, whose role is to change the direction of the air flow and avoid directly washing the dust filter bag.
In short, the analysis of working conditions is difficult, and there are many uncertain factors. The change of any one factor will affect the service life of the dust filter bag. In the analysis of working conditions, customers need to provide detailed information to understand the external environment in which the products are used, so as to manufacture and produce high-quality products that meet the specific working conditions and environmental conditions.