I. Product Overview
The FLZ low-pressure jet pulse bag filter is ingeniously constructed, with various components working together to perform a powerful dust removal function. It consists of key parts such as supports, ash hoppers, filter chambers, clean air chambers, filter bags, jetting devices and controllers. As a series of products, it has 1 to 4 unit specifications available for selection. Each unit is scientifically arranged, containing 24 rows with 12 filter bags in each row, totaling 336 filter bags, and the overall filtration area can reach 800 square meters. The filter bags are made of polyester needle-punched felt, with a length of 6 meters and a diameter of 130 mm, ensuring a good filtration effect. Its overall structure is compact and has obvious advantages in terms of space occupation, so it has a wide range of application scenarios in many industrial fields such as metallurgy, casting, mining, chemical engineering, pharmacy, and cement building materials.
II. Working Principle
When the dust-laden gas enters the FLZ low-pressure jet pulse bag filter, it will first be evenly distributed by the guide vanes. Then it flows downward along the filter bags and passes through them evenly. A downward air flow is formed at the lower part of the filter bags, which is in the same direction as the dust falling during jetting, facilitating dust settlement and improving the ash cleaning effect. When the resistance of the dust collector increases, the pulse interval of the jetting system will be shortened at certain intervals, that is, "fast jetting"; when the resistance is small, the pulse jetting interval will be lengthened, that is, "slow jetting". This control method minimizes the number of jetting times and reduces power consumption. This dust collector adopts the online long-bag low-pressure pulse ash cleaning technology and uses low-pressure gas (generally 0.25 - 0.35 MPa) for pulse jetting ash cleaning, which can clean the dust thoroughly with less gas consumption.
III. Main Performance
High-Efficiency Dust Removal: It can efficiently filter various industrial dusts and has a good collection effect on fine dust. The dust removal efficiency can reach over 99%, which can make the dust content in the exhaust gas reach a very low level and meet the strict environmental protection emission standards.
Stable and Reliable: It adopts submerged pulse solenoid valves that can work repeatedly for more than 1 million times, ensuring the normal operation of the equipment for a long time. It is equipped with full-computer pulse control, with two selection methods of automatic differential pressure control for ash cleaning and manual operation control. The differential pressure display function is complete and easy to adjust, which can make the resistance, air volume and compressed air consumption of the dust collector tend to be balanced.
Economical and Energy-Saving: The jetting pressure is low, which greatly reduces the energy consumption for ash cleaning and prolongs the service life of the filter bags. The length of the filter bags can reach 6 meters, and the filtration wind speed can be as high as 2 meters per minute. When dealing with the same air volume, it occupies a small area, reducing the operating cost and investment cost of the equipment.
IV. Specific Applications in Different Industries
Metallurgy Industry
In places such as the blast furnace casting house and converter steelmaking workshop of steel mills, a large amount of high-temperature and high-concentration dust will be generated. The FLZ low-pressure jet pulse bag filter can adapt to high-temperature working conditions, effectively filter dust, reduce the pollution of dust to the workshop environment and equipment, and protect the health of workers.
Chemical Industry
The dust generated in chemical production may have characteristics such as corrosiveness and toxicity. This dust collector can select appropriate filter bag materials according to the nature of the dust. For example, by using corrosion-resistant filter materials, it can safely and efficiently handle chemical dust, preventing dust leakage from causing harm to the environment and personnel.
Cement Building Materials Industry
In the raw material grinding, cement grinding and packaging workshops of cement plants, a large amount of dust will be raised. The FLZ dust collector can effectively collect these dusts, reduce dust emissions, improve the environmental quality of the factory area and its surroundings, and at the same time, the recovered dust can be reused as raw materials to improve the utilization rate of resources.
Mining Industry
During the drilling, blasting, loading and unloading operations in the mining process, a large amount of dust-containing exhaust gas will be generated. This dust collector can be installed in positions such as the crushing workshop and screening workshop of the mine to purify the dust-containing exhaust gas, reduce the dust concentration, improve the mining working environment, and reduce the wear and tear of equipment caused by dust.
V. Application Cases
A large steel mill installed the FLZ low-pressure jet pulse bag filter in the blast furnace casting house. Before the installation of the dust collector, the casting house was filled with flying dust, and the dust concentration in the workshop seriously exceeded the standard. This not only affected the operation of workers and their physical health but also accelerated the wear and tear of equipment. After the installation of the dust collector, the dust concentration in the workshop was significantly reduced, the working environment was obviously improved, the maintenance cycle of the equipment was prolonged, and at the same time, the pollution to the surrounding environment was reduced, achieving a win-win situation for environmental protection and production.
A chemical enterprise generated dust containing acidic gases during the production process. The dust collector previously used had serious filter bag corrosion and required frequent replacement of filter bags, resulting in high costs and unstable dust removal effects. After replacing it with the FLZ low-pressure jet pulse bag filter and selecting the acid-resistant filter bag material, the dust collector operated stably with high dust removal efficiency, effectively solving the problem of acidic dust control and ensuring the normal progress of production and reducing the environmental protection risks of the enterprise.
In conclusion, the FLZ low-pressure jet pulse bag filter, with its excellent performance, plays an important role in dust control in many industrial fields and helps enterprises achieve clean production and sustainable development.
