The Metas dust removal filter bag has the characteristics of being resistant to acid and alkali corrosion, and resistant to bending. After different surface chemical treatments and post-treatment technologies, it also has the function of easy dust removal. Dust containing flue gas can only be filtered and separated in a state above the acid dew point, that is, at a high temperature.
Under normal flue gas temperature conditions, only the cloth bag needs to be able to withstand temperatures below 150 ℃. In these situations, chemical fibers such as polyester, polypropylene, acrylic, and nylon can be basically competent.
For situations where the flue gas temperature is relatively high, such as chemical industry, carbon black (white carbon black) exhaust gas, blast furnace gas in ironworks, shaft kiln exhaust gas in cement plants, kiln exhaust gas in calcium carbide plants, casting, steelmaking plant exhaust gas, asphalt concrete mixing asphalt exhaust gas, refractory brick kiln exhaust gas, coking exhaust gas, etc., firstly, because these dusty flue gases and dust are not suitable for collection by electrostatic precipitators due to specific resistance limitations, and can only be collected using Metas needle felt dust removal bags or other methods;
Secondly, if it is necessary to reduce the temperature of dusty flue gas to below 150 ℃, the investment may be high or limited by the site conditions;
The third reason is that dusty flue gas contains sulfur, which makes it acidic; Dew Point "; Due to factors such as the fact that dusty flue gas can only be filtered and separated at temperatures above the acid dew point, it is necessary to have a chemical fiber that can withstand high temperatures in the Metas needle punched felt dust removal bag to make filter materials.
Metas dust bags are particularly suitable for locations with these working conditions.
The fiber of the Metas needle punched felt dust removal bag belongs to the aromatic polyamide fiber category. In addition to the spinnability of polyester fiber, the Metas dust removal bag is characterized by good heat resistance, flame retardancy, and non melting properties. The fiber oxygen index can be around 29%, which is unnatural. When the temperature is above 400 ℃, the fibers undergo slow carbonization. In addition, the Metas dust filter bag fibers also have good dimensional stability. Therefore, it has a long service life and is currently the filter material for bag filters in high-temperature filtration applications.
The Metas dust bag produced by our company uses fiber as raw material, adopts standards, and is manufactured using imported equipment; The Metas dust removal filter bag has the characteristics of being resistant to acid and alkali corrosion, bending resistance, etc. After different surface chemical treatments and post-treatment technologies, it also has functions such as easy dust cleaning, and is suitable for products in the 200 ° C-300 ° C series.
Metas dust filter bags are widely used in industries such as steel, non-ferrous metallurgy, chemical processing, carbon black, building materials, and power