Fertilizer plants generate a lot of dust during the production process, which not only affects the quality of products, but can also have adverse effects on the environment and workers' health. Therefore, it is important to choose an efficient and reliable dust collector. As one of the commonly used dust removal equipment in fertilizer plants, the stand-alone bag filter has the advantages of simple structure, convenient operation and high dust removal efficiency. This article will introduce the structural principle and best of the stand-alone bag filter in the fertilizer plant in detail.
First, the structure of the stand-alone bag filter
The stand-alone bag filter of the fertilizer plant is mainly composed of the dust collector body, the bag filter room, the fan, the ash hopper and the control system.
Dust collector body:It is usually welded from steel plates, which has good sealing and durability. There is a bag filter chamber inside the body for dust collection.
Bag filter chamber:It is the core part of the dust collector and is composed of multiple cloth bags. The bag material is usually polyester fiber, glass fiber, etc., which has good air permeability and filtration performance. When the dust passes through the bag, it is trapped on the surface of the bag, forming a dust layer.
Fans:Located at the dust collector air outlet, it is used to provide the amount of ventilation required by the dust collector. The selection of the fan should be determined according to the actual air volume and pressure loss of the fertilizer plant.
Ash Hopper:Located in the lower part of the dust collector, it is used to collect the dust that falls off the cloth bag. The ash hopper is equipped with ash discharge opening, which is convenient for regular cleaning.
Control system:Including electrical control cabinet and sensors, etc., used to control the start-stop, ash cleaning and other operations of the dust collector. The control system can be adjusted according to the production situation of the fertilizer plant to achieve automatic control.
Second, the working principle of the stand-alone bag filter
The working principle of the stand-alone bag filter in the fertilizer plant mainly includes four processes: the entry of dust-containing gas, filtration, ash cleaning and dust discharge.
Dusty gases enter:The dust-laden gas enters the bag filter chamber through the air inlet of the dust collector.
Filtering:When the dusty gas passes through the bag, the dust is trapped on the surface of the bag, forming a dust layer. With the thickening of the dust layer, the resistance of the cloth bag gradually increases, and the cloth bag needs to be cleaned.
Ash Cleaning:The cleaning process usually uses pulse injection or mechanical vibration. Pulse injection is to inject high-pressure air flow into the bag through the pulse valve, so that the bag expands and contracts sharply, and shakes off the dust on the surface of the bag. Mechanical rapping is to periodically vibrate the bag through the rapping device to make the dust fall off the bag.
Dust emission:The dust that falls off the bag falls into the ash hopper and is cleaned regularly through the ash discharge port. The clean gas is discharged by the fan after passing through the bag filter chamber.
3. The first of the stand-alone bag dust collector
The ** of the single bag filter in the fertilizer plant varies depending on the model, specification, material and other factors. In general, ** is influenced by several factors:
Equipment scale:The larger the scale of the dust collector's processing air volume and the number of bags, the higher the **.
Material Selection:The material of the cloth bag and the material of the dust collector body are different, and there will be differences.
Additional Features:Additional functions such as pulse injection system, automatic control system and so on will increase the quality of the equipment.
Brand & Quality:Equipment from well-known brands is usually higher, but quality and performance are also more guaranteed.
To sum up, the first quality of the stand-alone bag filter in the fertilizer plant needs to be determined according to the specific needs and working conditions. When choosing equipment, in addition to considering the best factors, we should also pay attention to the performance, stability and after-sales service of the equipment.