Fertilizer plants produce a large amount of dusty gases during the production process, which will not only pollute the environment but also affect the health of employees if they are emitted directly without treatment. In order to effectively control dust emissions and improve the quality of the production environment, fertilizer plants usually choose to install a stand-alone pulse bag filter. This article will introduce the design scheme and technical parameters of the stand-alone pulse bag filter in the fertilizer plant in detail, so that readers can better understand and apply the equipment.
First, the design plan
The design scheme of the stand-alone pulse bag filter of the fertilizer plant mainly includes the main structure of the dust collector, the pulse injection system, the ash hopper and ash discharge system, the control system and other aspects.
The main structure of the dust collector: The main structure is usually welded by steel plate, which has good sealing and structural strength. The inside is equipped with a bag filter chamber, which is made of high-temperature and corrosion-resistant materials to adapt to the harsh working environment of the fertilizer plant.
Pulse injection system: The pulse injection system is the core part of the stand-alone pulse bag filter, which is composed of pulse valve, air bag, and blowing pipe. When the dust on the surface of the bag accumulates to a certain extent, the pulse valve will open and close quickly, forming a high-pressure air flow to spray the bag, causing the bag to expand and contract sharply, thereby shaking off the dust on the surface of the bag.
Hopper & Ash Discharge System: The hopper is located in the lower part of the dust collector and is used to collect the dust that falls off the bag. The ash discharge system includes ash discharge valve, ash discharge pipe, etc., through regular ash discharge, to keep the dust in the ash hopper from accumulating too much, to ensure the normal operation of the dust collector.
Control system: The control system is the "brain" of the dust collector, which is responsible for controlling the start and stop of the pulse injection system, the adjustment of the cleaning cycle and the overall operation of the dust collector. The control system can be programmed according to the actual situation of the fertilizer plant to achieve automatic control.
Second, technical parameters
The technical parameters of the stand-alone pulse bag filter in the fertilizer plant are important indicators to evaluate the performance of the equipment, mainly including the following aspects:
Treatment air volume: The treatment air volume refers to the volume of dusty gas that the dust collector can handle per unit time, usually in cubic meters of hours (m h). The size of the treatment air volume should be determined according to the actual production situation of the fertilizer plant to ensure that the dust collector can meet the production demand.
Filtration wind speed: Filtration wind speed refers to the speed at which dusty gas passes through the bag, usually measured in meters and minutes (m min). The selection of filter air speed should comprehensively consider factors such as dust removal efficiency, bag service life and pressure loss.
Bag material: The material of the bag directly affects the dust removal effect of the dust collector and the service life of the bag. Commonly used bag materials include polyester fiber, glass fiber, etc., which should be selected according to the working environment of the fertilizer plant, the nature of the dust and other factors.
Pulse Injection Cycle: A pulse injection cycle refers to the time interval between two pulse injections, usually measured in seconds(s). The choice of pulse injection cycle should be determined according to the nature of the dust, the material and thickness of the bag, and other factors to ensure the best cleaning effect.
Dust collection efficiency: Dust collection efficiency refers to the ability of a dust collector to remove dust, usually expressed as a percentage (%). The dust removal efficiency of the single-machine pulse bag filter in the fertilizer plant can usually reach more than 99% to meet the requirements of environmental protection.
To sum up, the design scheme and technical parameters of the stand-alone pulse bag filter in the fertilizer plant have an important impact on the performance and use effect of the equipment. When selecting and using the dust collector, the design scheme and technical parameters should be determined according to the actual needs and working conditions of the fertilizer plant, so as to ensure that the dust collector can fully play its role and provide a strong guarantee for the production of the fertilizer plant.