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What are the commonly used materials of dust removal filter bags in the cement industry?

2022-07-16 Page view : 12 views

The dust emission of the cement industry is about 2% to 3% of its output, and the total emission of various countries is more than 10 million tons. People exposed to cement dust for a long time are prone to various diseases, and cement dust will cause land alkalization and serious environmental pollution. In the process of cement production, a large amount of dust will be generated whether it is crushing, drying, grinding and calcination. As each process is drying, it has the characteristics of many dust points, large area and wide range, which need to be treated with dust removal cloth bags.

 

Generally, the filter bag used in the cement industry depends on the link in which it is used, the difference of cement production process, the difference of operation and management level, and the difference of the nature of dust containing flue gas. The use conditions of dust removal bag filter material in the cement industry are very different. The cement industry has normal temperature dust removal conditions and high temperature dust removal conditions. The commonly used filter bags include polyester, FMS, P84, Nomex, and wholesale glass fiber dust removal filter bags, and the price also has a certain gap. Select the dust removal filter bag with the most appropriate cost performance according to the working conditions to reduce the blindness and randomness of selection.

 

High Temperature Dust Collector Bags Filter for Cement Dust

 

1. P84 Filter Bag for Cement Dust

Gram weight: 500

Thickness: 2.3

Working temperature: ≤ 260 ℃

Instantaneous temperature: 280 ℃

Acid resistance: excellent

Alkali resistance: medium

Applicable to coal-fired boilers, liquid bed boilers, waste incineration, asphalt plants, cement plants, waste incinerators, etc.

P84 high temperature resistant dedusting bag fiber filter material: it is a high tech organic polymer material. The cross section of P84 high temperature resistant dedusting bag fiber is trilobal. Compared with other cross-section fibers, this cross-section has the characteristics of large surface area, large gap, high fiber surface area coefficient, large porosity and so on. P84 high temperature resistant dedusting bag fiber filter material can be used continuously under high temperatures below 260 ℃, and the temperature can be as high as 280 ℃, with low running resistance and long service life.

 

2. FMS Filter Bag for Cement Dust

Gram weight: 800

Thickness: 2.0

Working temperature: ≤ 280 ℃

Instantaneous temperature: 300 ℃

Acid resistance: good

Alkali resistance: good

 

Suitable for steel, smelting, ferroalloy, chemical industry, cement, calcium carbide, waste incineration, electricity, asphalt mixing, etc.

It belongs to nonwoven filter material. On the basis of the base cloth, the highly fluffy and non-powerful fiber net is needle punched and shaped. Through complex processes, the three-dimensional staggered three-dimensional structure of the fibers in the needle felt filter material is made. This structure has a stable filtering effect and is conducive to the formation of the dust layer. There is no direct gap after filtration and ash removal.

 

3. Aramid/Nomex Filter Bag for Cement Dust

Gram weight: 500

Thickness: 2.0

Working temperature: ≤ 204 ℃

Instantaneous temperature: 250 ℃

Acid resistance: medium

Alkali resistance: medium

 

Applicable to asphalt, cement, steel, non-ferrous metals, lime, dust, metallurgy, plastics, carbon black, coke, tobacco and other industries.

 

4. Fiberglass Filter Bag for Cement Dust

Gram weight: 1000

Thickness: 2.1

Working temperature: ≤ 280 ℃

Instantaneous temperature: 300 ℃

 

Normal temperature dust Collector Bag Filters for Cement Dust

  1. Polyester filter bag for cement dust
  2. Polyester membrane filter bag for cement dust
  3. Polyester anti-static filter bag for cement dust

 

Dust collector filter bags are required in all links of cement production process, which can be simply divided into three main processes: raw meal preparation, clinker calcination and cement grinding.

 

Cement mill: normal temperature flue gas, no special working conditions. Polyester filter bag is the standard filter material in this environment. Filter materials such as waterproof and oil proof, PTFE film covering, microfiber, etc. can be selected according to special conditions.

 

Coal mill: Polyester antistatic filter material can be used when the temperature is below 80 ℃. If the working condition contains water vapor, acrylic fiber can be considered.

 

Kiln head: the temperature is about 150 ℃, and the dust concentration is high. Aramid is the most suitable filter material.

 

Kiln tail: the temperature is as high as 260 ℃, containing acid gas and nitrogen oxide. The working condition at the end of the kiln is relatively complex. At this time, there are many choices of filter materials, such as aramid glass fiber composite filter material, glass fiber membrane filter material, P84 filter material, etc.

 

SFFILTECH brand is an enterprise specializing in the production, manufacture and export of filter bags. SFFILTECH Filter Bag Company relies on the service supporting experience of many 2500t/d, 4000t/d and 5000t/d cement plants around the world for many years to effectively improve the service life of dust removal bags and greatly improve the product cost performance while ensuring that the dust removal bags of cement plants meet the national emission standards. Welcome to inquire.