In what aspects is it convenient to choose the filter bag?
The fabric design of dust filter bag should be designed to be efficient filtration, easy dust stripping and durable effect. Dust filter bag is one of the important parts in the precipitator, bag filter is generally according to the properties of dust, dust removal by way of the nature and filter according to the different filter filter bag, filter bag so select filter attention focus is also different. A filter bag that is suitable for price performance according to the requirement of operating condition. The gas temperature. Gas temperature below 130 ℃ selection filter filter bag at room temperature, the temperature between 130 ℃ to 260 ℃ high temperature dust filter bag. Gas humidity. Dusty gases according to the relative humidity is divided into three states: dry gas (relative humidity below 30%), the general condition (relative humidity between 30% - 80%) and high humidity (relative humidity above 80%) of gas. When the gas moisture is high, you should choose the laminated waterproof cloth bag. The chemical properties of gases. The chemical elements of acid, alkali, oxidizing agent and organic solvents are found in all kinds of furnace gases and chemical exhaust gases. In order to select the filter bag, the filter bag should be chosen according to the chemical composition in the flue gas.
The dust bag is chosen according to the special properties of dust. Dust is moist and sticky. If the dust is wet and sticky, choose a filter bag that is waterproof and coated. The flammability and charge of dust. Some dust can be flammable when it is necessary to choose the fire-retardant cloth bag. Antistatic filter bags are specially used for the charge of electrically charged dust.
Select dust filter bag by dust collector. Mechanical vibration type dust collector. The filter is thin and smooth, and the texture is soft, which is good for the filter bag of the vibration wave. Anti-blowing bagged dust collector. Should choose the texture soft, the structure is stable, wear-resistant good filter bag. Pulse bag filter. Usually the external filter bag with a frame is used. The requirement is thick, wear-resisting, anti-tension.
First, it is important to understand the temperature of the smoke that is being processed. If the normal temperature of the filter is lower than the temperature of the flue gas, it is possible to cause the cloth bag to burn down and cause a large economic loss. So how do you select the filter by the smoke temperature? Filter material by using temperature is divided into: under normal temperature is below 130 ℃, the temperature filter material of 130 ~ 180 ℃, high temperature filter material of 180 ~ 280 ℃. It is known that the temperature of the flue gas and the temperature of the filter can be selected by the filter. The second step is to understand the composition of smoke: this includes the content of the dust, the proportion, the size of the particle size, the viscosity and the moisture content of the flue. The method of cleaning the dust dust, the method of reprocessing and the filter wind speed of the filter were obtained. Usually a large amount of dust and dust is sticky and light condition choose pulse bag filter, filtration speed most control over 1.2 m/min, the minority under 1 m/min. The third step is to understand the amount of smoke that needs to be processed: the amount of air that dust can be treated by the dust collector is usually the operating air volume and the system leakage coefficient (10% ~ 15%). The formula: S = Q / 60V gives the total filter area by the formula: S = Q / 60V. S: total filter area Q: system processing air volume V: filter wind speed.