Metas needle punched felt high-temperature dust bag

NegotiableUpdate on 06/10

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Overview

Introduction to Metas Needle Felt High Temperature Dust Removal Bag: Metas Needle Felt High Temperature Dust Removal Bag is made by our company using imported fibers as raw materials, adopting international standards, and manufactured with imported equipment

Product Details

The Metas needle punched felt high-temperature dust removal bag is made by our company using imported fibers as raw materials, adopting international standards, and manufactured with imported equipment. This filter material has the following four significant characteristics:

① Excellent temperature resistance: It can operate continuously at a temperature of 204 ℃ (instantaneous temperature of 250 ℃) and can withstand repeated fluctuations in temperature of 250 ℃.

② Outstanding dimensional stability: With a thermal shrinkage rate of less than 1% at a temperature of 250 ℃, it has excellent high-temperature stability.

③ Proud fire resistance: decomposition and carbonization only begin at 400 ℃, with a limit oxygen index (LOI) of 30, neither self igniting nor assisting combustion.

④ Good chemical resistance: Low concentrations of acids, bases, and most hydrocarbons will not affect it, and even small amounts of fluoride will not significantly corrode it.

At present, the main methods for cleaning dust with Meitas needle punched felt high-temperature dust removal bags include gas pressurization, pressure regulating back blowing dust removal, and pulse flushing dust removal.

The temperature of the Mitas needle punched felt high-temperature dust removal bag should be selected according to the usage conditions of the working conditions. The fabric and design of high-temperature dust removal bags should pursue the effects of * filtration, easy dust peeling, and durability. The selection of high-temperature dust removal bags is quite important, as it directly affects the dust removal efficiency of the dust collector. The selection of dust removal bags should be based on the following aspects:

The temperature of the gas; Humidity and chemical properties; Particle size; Dust concentration; Filter wind speed; Various factors such as dust removal methods.

In pulse and gas box pulse dust collectors, dust adheres to the outer surface of the dust removal bag. When the dusty gas passes through the dust collector, the dust is trapped on the outer surface of the dust removal bag, while the clean gas enters the interior of the dust removal bag through the filter material. The skeleton inside the dust removal bag is used to support the bag and prevent it from collapsing. At the same time, it helps to remove and redistribute the dust cake.

High temperature dust removal bags should have characteristics such as high temperature resistance, high strength, acid and alkali corrosion resistance, wear resistance, and bending resistance. After different surface chemical treatments and post finishing techniques, they should also have functions such as easy dust removal, water and oil repellency, anti-static, etc., and be suitable for products in the 200 ° C-300 ° C series.

The gas pressurization and pressure regulation cleaning method is a flexible cleaning method, which uses reverse airflow to blow off the dust layer and achieve the purpose of cleaning. Therefore, it is required that the filter material has a certain strength, good breathability, and a certain smoothness of the attached dust surface. At present, the back blowing cleaning method of Meitas needle punched felt high-temperature dust removal bag is mostly used with glass fiber woven filter cloth or Nomex woven filter cloth. Large blast furnace gas dust removal in foreign countries often uses higher filtration wind speed and gas pressure back blowing for dust removal, so Nomex machine woven filter cloth is selected; Compared to Nomex, the performance of glass fiber woven filter cloth is inferior, but it has a price advantage and is mainly used in small blast furnace gas treatment in China.