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Particle separation equipment in gas - bag dust collector
Origin：Hefan Hit： Time：2020-03-09
On the basis of the separation mechanism of dust particles in the gas, a separation device is designed, which is a dust collector, also called dust collection, and a separation device is designed, which is a dust collector, also called a dust collector, dust collector, and dust removal device. Wait.
First, the dust removal process
For the convenience of analysis, the entire dust removal process is divided into the following three processes that are connected and different.
Capture separation process
This process can be divided into the capture progress phase and the separation phase.
The dust that is uniformly mixed or suspended in the carrying medium is collected into the dust removal space of the dust collector during the moving stage, and the dust is moved to the separation interface according to different types of dust collectors under different external forces. As the dust moves toward the separation interface, the concentration becomes larger and larger, so the quality of the capture and separation stage is also the stage of dust concentration.
After the high-concentration dust flows to the separation interface in the separation stage, two mechanisms work. The carrying capacity of the carrying medium will reach the limit state. In the contradiction between suspension and sedimentation, sedimentation becomes the main aspect. Through the sedimentation, the dust particles are separated from the carrying medium. The response factors of the limit state are generally related to the air velocity and the boundary conditions of the side walls. The boundary layer of the side wall is an important influencing factor. Another mechanism is the high-concentration dust flow. Condensation becomes the main contradiction in the contradiction between the diffusion and agglomeration of dust particles. Dust particles can agglomerate with each other, and they may agglomerate with the substantial interface and adsorb on them. Through these two mechanisms, the dust is finally separated from the carrier medium.
2.Dust extraction process
The dust discharge process is mainly to remove the dust that has been separated after the separation interface from the dust outlet. Different dust collectors have different forces for discharging dust. Some dust collectors can use the external force of the original capture and separation to remove dust from the dust collector without additional force. Such as mechanical dust collector and washing dust collector. Other dust collectors require additional power to discharge the separated dust. Such as electric precipitator, filter precipitator and dust removal device. During the dust removal process, the separated dust may re-diffuse and suspend in the purified air stream of the abandoned dust, so there are problems such as back mixing and secondary flying in the dust removal technology.
3. Exhaust process
The process of exhausting the relatively clean airflow from the exhaust port after the dust has been discarded is called the exhaust process.
Obviously, the first two processes are related to studying the efficiency of the dust collector, and the exhaust process is related to the pressure loss of the cyclone. In order to study the energy consumption of the entire airflow of the cyclone dust collector, the pressure loss before and after dust disposal is often discussed to find out the law of pressure loss. Three types of dust removal processes of four categories and six types of removers.
