What is offline bag filter?
The air we breathe is a mixture of gases, which consist of approximately 21% oxygen, 87% nitrogen and 1% argon, and a small amount of rare gases. In the human respiratory system, there are other particles and gases that produce the nature, human, and industrial processes. The dust that is separated from the air by dust collectors is perceived from the perspective of environmental laws and the economic effects of dust recycling. The bag separators are used to a large scale in collecting dust. Their application in the separation of dust particles from the flow of gases has begun decades ago.
In fact, the separation of dust from the air is the basis of the philosophy of designing a dust collector.
The filter bag is generally used to separate dust from 0.1 to 10 microns in diameter. The design and calculation of filter separation efficiency is defined for a specific mist and with all its physical properties. The filter bag design is designed to achieve the maximum efficiency of intelligent compilation of mechanical and experimental knowledge.
This machine is used in various mineral industries such as tile, china, micronized powders, cement, steel, food industries, etc.
The three main methods of cleaning (retrieving) the bags are:
1- Suitable pulse jet method for a wide range of Dubai and various industries. The bag cleaning mechanism requires compressed air. Online
2. Airway approach (positive or negative pressure) suitable for high debuts and mineral industries and ferroalloys. The cleaning mechanism of the bags does not require compressed air. Offline
3. Shaking method suitable for low and medium run and mineral industries. The cleaning mechanism of the bags does not require compressed air. Offline
The resuscitation action continues until it reaches the difference between the heads of the bags and the bags to be cleaned. The amount of pressure drop in the device is also a function of the speed of fabric refinement, which is in the range of 1000 – 2500 Pascal.
If the concentration of dust is excessive, the use of a cyclone or pre-dust bag before the filter bag is essential.
The filter bag is designed and calculated using the following information and is based on the following information:
1. The diameter of the dust particles per unit mass.
Gas Gas
3. Gas density
4. Density of dust
5. Dense mass of dust
6. Gas temperature
7. Acceptable amount of aerodynamic resistance of the bag filter (pressure drop)
8. The efficiency expressed as a percentage
9. The amount of steam in the gas
