The development trend of cement industry's environmental protection standards has put forward high requirements for environmental protection dust removal accessories. All kinds of filter bags and accessories provided by VABLUE meet the stringent emission and life requirements with high quality.

Cement process characteristics and filter material selection

1. Crushing, transportation and storage of limestone

Limestone is the main raw material for cement production. After entering the plant, limestone has to go through several stages of crushing and storage before entering the next process. There are many dust spots in this process

2. Dust removal of waste gas from raw mill

This part of the dust gas contains high humidity, and the water gas brings great difficulties to the dust removal of the raw mill.

3. Bag filter for coal mill system

Pulverized coal gas is a kind of inflammable and explosive gas. The bag type dust collector for coal mill must be equipped with anti combustion, explosion-proof and safety pressure relief measures, and the filter bag must use anti-static filter material.

4. Dust removal of raw material dryer

There are mainly two drying methods: one is drying in the grinding process at the same time, that is, drying process and grinding process are carried out in the same equipment; the other is to set up a separate drying equipment, and the waste gas from the drying equipment is the main dust emission source of cement plant, especially the clay drying system. The humidity content of the system is particularly high, the humidity content in the exhaust gas is generally more than 15%, the dew point temperature is up to 55 ℃, and the dust concentration is up to 50g / Nm3. Anti condensation filter material must be used, and anti-corrosion, heat preservation measures, automatic temperature detection and adjustment measures must be taken for the body.

5. Dust removal of rotary kiln

Sintering is the main process means of cement production, and its main pollutant is high temperature dust gas; the flue gas contains a large amount of dust, with the concentration of 30-100 g / m3; due to the high chimney, large amount of flue gas and high concentration, Nomex or P84 is generally selected.

6. Dust removal of shaft kiln

The working conditions such as dust concentration, moisture content and exhaust gas temperature of shaft kiln flue gas vary greatly; the bag filter must meet the above large range fluctuation, and the selection of filter material should also be paid attention to.

7. Dust removal of cement mill

The concentration discharged from the cement mill is higher and higher, sometimes more than 1000 g / m3. The filter material should be able to resist certain scour.

8. Dust removal of cement packing system

There are several dust spots in the cement packing system. In the past, single dust collector was used instead of ordinary single dust collector and normal temperature filter material