The dust filter bag is one of the most important components of the filter bag that is used in the boiler site. Bag filter, also known as bag filter, dust filter or fabric filter, is a device for controlling air pollution and collecting dust. In other words, the bag filter filters the particles or polluted gas released from various commercial processes from the environment around the facility. In fact, the dust filter bag is placed inside a filter housing to control the amount of sulfur dioxide and other harmful gases. During the operation of the boiler, the polluted gases coming out of it enter the dust filter bag and come into contact with the outer surface of the air filter bag (such as a pipe). Since there are centrifugal fans at the end of the filter chamber, they create a continuous suction effect. Therefore, the polluted air is directed into the dust collector filter bag.
Then, larger dust particles are collected on the surface of the filter and clean air is discharged through the outlet of the filter bag. In this way, the operation of collecting dust in the air is completed by the dust filter bag. In the late 1970s, after the invention of fabrics with high temperature resistance, dust filter bags were widely used. It should be noted that these fabrics used for bag filters were able to withstand temperatures of more than 350 degrees Fahrenheit (177 degrees Celsius). One of the most important features of the dust filter bag is to have an efficiency of 99% or even better for collecting various particles, even very small particles. Unlike electrostatic precipitators, whose efficiency depends on the process and electrical conditions, the dust collector filter bag has the highest possible efficiency in different conditions. Therefore, power plants, steel factories, pharmaceutical manufacturers, food industries, cement, chemicals and other industrial companies often use dust filter bags to prevent the release of air pollutants.
Nomax filter bag
Technical specifications of the product:
The standard diameter of the bags can be changed from 15 to 25 cm, but it is usually made from 18-20 cm. The length of the filters is from 50 cm to 10 meters, but the standard length is 2 to 3 meters.
The material of the filter series is either in the form of a steel ring or in the form of a spring (Snap Band) to fix the filter. It is connected to the holes of the dust collector to the bag filter. The fabric of the bag is made of polyaramid (Nomex-Nomex) with a thickness of 2 mm. It withstands temperatures up to 180 degrees continuously and 200 degrees momentarily. The useful life of Nomex filter bags is 6 months to one year, after which they must be replaced. Nomex filters should not be washed.
Fiberglass filter bag
Fiberglass filter bag is a kind of specially processed and made glass cloth, it is an ideal high temperature resistant cloth filter cloth, and fiberglass filter bag is widely used in dust cleaning areas. It is used in industrial, air pollution and valuable recycling of dust, etc.
Fiberglass filter performance performance
Good heat resistance, suitable for long-term use under the temperature below 280 degrees. The fiber is normal at the temperature of use
🔹Good chemical resistance: except for strong hydrofluoric acid, strong acid and strong alkali, it is stable for other mediums. be more than 99.5% and so on.
The main benefits and features of the fiberglass filter bag
Fiberglass Filter Bag Features
Resistance to high temperature: 240-280.
It is anti-acid and anti-alkali.
It is resistant to abrasion, high tensile strength.
Long life: > 4500 hours.
It has little resistance to purification.
Single fiber, high porosity, resistance to gasoline purification.
It can be used in all kinds of complex conditions and harsh environmental conditions. It can be adjusted