I. Product Overview
The LMC long bag off-line pulse dust collector is an outstanding large-scale dust removal equipment. It mainly consists of components such as a box body, an ash hopper, an air inlet, an air outlet, filter bags, skeletons, a pulse jetting device, and off-line valves. It adopts a long bag design, with the length of the filter bags usually reaching 6 - 8 meters, which significantly increases the filtration area and can effectively handle dust-laden gas with large air volumes. The filter bags are made of high-quality materials such as polyester fiber, possessing good wear resistance and corrosion resistance, and can adapt to a variety of complex working conditions. The overall structure of this dust collector is reasonable, and it has good sealing performance. It is widely used in numerous industries such as metallurgy, electric power, building materials, and chemical engineering, providing a powerful guarantee for dust control in industrial production.
II. Working Principle
The dust-laden gas enters the box body of the dust collector through the air inlet. After being evenly dispersed under the action of the flow guide device, it enters the filtering area where the filter bags are located. At this time, the dust particles are blocked on the outer surface of the filter bags, while the clean gas penetrates the filter bags and is discharged through the air outlet, realizing the initial gas-solid separation. As the dust on the surface of the filter bags continuously accumulates, the resistance of the equipment will gradually increase. When the set resistance value is reached, the off-line valves will close, making the corresponding filter bag units temporarily leave the working state and enter the off-line ash cleaning mode. Subsequently, the pulse jetting device injects high-pressure gas into the filter bags according to the set program, causing the filter bags to instantaneously expand and vibrate. The dust attached to the filter bags will fall off under the powerful impact and be collected in the ash hopper. After the ash cleaning is completed, the off-line valves will open, and the filter bags will resume normal filtering work. This cycle repeats to ensure the continuous and efficient operation of the dust collector.
III. Main Performance
High-efficiency Dust Removal: For dust particles with a particle size larger than 0.5 micrometers, its dust removal efficiency can be as high as over 99.5%. It can greatly reduce the dust content in the exhaust gas, enabling the emissions to meet strict environmental protection standards and effectively improving the air quality of the surrounding environment.
Large Air Volume Processing: Thanks to the long bag design and the reasonable internal structural layout, it has a powerful ability to handle dust-laden gas with large air volumes, which can meet the dust removal needs in large-scale industrial production scenarios and ensure the cleanliness of the production workshop and its surrounding environment.
Stable and Reliable Operation: Each component is made of high-quality materials, and the manufacturing process is strict. Moreover, it has a complete protection and monitoring mechanism, such as functions of over-temperature and over-pressure alarms. It can operate stably for a long time under different working conditions, reducing the downtime due to equipment failures and improving production efficiency.
Good Ash Cleaning Effect: The off-line pulse ash cleaning method ensures the thoroughness of ash cleaning, avoiding interference with other filtering filter bags during the ash cleaning process, enabling the filter bags to always maintain good air permeability and filtration performance, prolonging the service life of the filter bags, and reducing the operating cost.
IV. Specific Applications in Different Industries
Metallurgy Industry
In the production processes such as sintering, iron smelting, and steelmaking in steel mills, a large amount of high-temperature and high-concentration iron-containing dust will be generated. The LMC long bag off-line pulse dust collector can withstand high-temperature environments, efficiently capture and filter the iron-containing dust, prevent the dust from spreading and polluting the environment, and at the same time, the recovered iron powder can be recycled for secondary use, improving the resource utilization rate and reducing the production cost.
Electric Power Industry
In thermal power plants, a large amount of pulverized coal and dust will be generated during the processes of coal transportation, crushing, and combustion. After installing this dust collector in the corresponding links, it can effectively remove these dusts, ensure the normal operation of the generator set, reduce the wear and corrosion of the equipment caused by the dust, prolong the service life of the equipment, and make the exhaust gas emissions of the power plant meet the environmental protection requirements, avoiding environmental protection penalties.
Building Materials Industry
In building materials production enterprises such as cement plants and ceramic factories, a large amount of dust will be generated during the processes of raw material crushing, grinding, and firing. The LMC long bag off-line pulse dust collector can accurately capture these dusts. Whether it is cement dust or ceramic raw material dust, etc., it can achieve efficient purification treatment, improve the working environment in the workshop, reduce the harm of dust to the health of workers, and also contribute to the improvement of the air quality of the surrounding atmosphere.
Chemical Industry
In chemical production, various dusts with complex properties, corrosiveness, or toxicity will be generated. This dust collector can select suitable filter bag materials according to the characteristics of different chemical dusts for targeted treatment, effectively blocking the dust and preventing it from leaking into the air, ensuring the safety of the chemical production workshop, maintaining a good production order, and protecting the surrounding ecological environment and the health of personnel.
V. Application Cases
In the sintering workshop of a large steel mill, the dust pollution was serious in the past. Although some conventional dust removal measures were taken, the effect was not satisfactory. The workshop was filled with dust, which not only affected the normal work of workers but also led to poor air quality in the surrounding environment. The mill was repeatedly warned by the environmental protection department. Later, after installing the LMC long bag off-line pulse dust collector, after running for a period of time, the dust concentration in the workshop was significantly reduced, from hundreds of milligrams per cubic meter to a dozen milligrams, meeting the environmental protection emission standards. The working environment of workers was greatly improved, and the production efficiency was also increased. Moreover, by recycling the iron elements in the dust, the enterprise could save a considerable amount of raw material procurement expenses every year.
A cement plant installed the LMC long bag off-line pulse dust collector in the raw material crushing and cement grinding workshops. Before that, the two workshops were filled with flying dust, and the equipment needed frequent maintenance due to dust erosion, and the product quality was also affected to some extent. After using this dust collector, the dust was effectively controlled, the air in the workshop became fresh, the number of equipment maintenance times was significantly reduced, and the defective rate of products caused by dust pollution was reduced from about 8% to less than 2%. The economic and social benefits of the enterprise were both significantly improved.
In conclusion, the LMC long bag off-line pulse dust collector, with its excellent performance, plays a key role in dust control in different industrial fields and is an important supporting equipment for many enterprises to achieve green and sustainable development.
