Lefilter Long Bag Offline Pulse Dust Collector

Introduction:

Long Bag Offline Pulse Dust Collector is a highly efficient dust removal equipment. It adopts a long filter bag design to increase the filtration area and improve the dust removal efficiency. During operation, dust-laden gas enters the dust collector, the dust is intercepted by the filter bag, and the purified gas is discharged. The dust removal adopts an offline pulse method, which can clean a single chamber without affecting the operation of other chambers. The dust collector has the advantages of compact structure, low resistance, and large air volume. It is widely used in steel, cement, chemical and other industries, and can effectively remove dust in the air to protect the environment and employee health.

When choosing a Long Bag Offline Pulse Dust Collector model, you need to consider many factors. Here are some key selection points:

Processing air volume:

Calculation requirements: Determine the required processing air volume based on the amount of dust-containing gas generated during the actual production process. If the air volume is too small, the dust collector will not be able to effectively process all the dust-containing gas, affecting the dust removal effect; if the air volume is too large, it will increase equipment investment and operating costs, causing energy waste. Generally, the required processing air volume can be calculated based on the production process, equipment operation conditions and relevant empirical formulas.

Reserved margin: In order to cope with possible air volume fluctuations during the production process or future expansion of production scale, it is recommended to reserve a certain margin on the calculated basic air volume, usually about 10%-20%.

Filter area:

Based on the amount of dust: The filter area is closely related to the dust removal efficiency of the dust collector. Working conditions with high dust concentration and large generation require a larger filter area to ensure sufficient filtering capacity so that the dust can be fully attached to the filter bag and intercepted. For example, in industries with large amounts of dust, such as coal and mining, it is necessary to select a model with a larger filter area.

Combined with the air volume processed: The filter area is related to the air volume processed, and the appropriate filter area can be determined based on the design parameters of the dust collector and the air volume processed. Generally speaking, the larger the air volume processed, the larger the filter area required.

Filter bag material:

Temperature adaptability: Different operating temperatures have different requirements for filter bag materials. For normal temperature conditions (generally below 130°C), materials such as polyester needle felt can be selected; for medium temperature conditions (about 130°C-200°C), materials such as acrylic needle felt are more suitable; for high temperature conditions (above 200°C), high temperature resistant materials such as PPS (polyphenylene sulfide) and glass fiber are required. For example, in the high temperature flue gas dust removal in the steel smelting industry, high temperature resistant PPS filter bags are often used.

Chemical corrosion: If the dust-laden gas contains corrosive substances such as acid, alkali, and organic solvents, a filter bag material with good corrosion resistance, such as PTFE (polytetrafluoroethylene), must be selected to ensure the service life of the filter bag.

Dust characteristics: For dust with high viscosity, a filter bag material with a smooth surface and not easy to stick to dust should be selected, or the filter bag should be subjected to special surface treatment to prevent dust from accumulating on the filter bag and affecting the dust removal effect.

Cleaning method:

Offline cleaning: Offline cleaning refers to isolating a filter unit of the dust collector from the main airflow during cleaning and performing separate cleaning. This cleaning method has a good cleaning effect and can completely remove the dust accumulated on the filter bag. It is suitable for working conditions that are difficult to clean, such as high-concentration dust and sticky dust. However, the equipment structure of offline cleaning is relatively complex and the cost is relatively high.

Online cleaning: Online cleaning is to perform cleaning operations while the dust collector is filtering normally, and the airflow is not interrupted during cleaning. The online dust cleaning method has a simple structure and low operating cost, but the dust cleaning effect is slightly worse than the offline dust cleaning method. It is suitable for working conditions with low dust concentration and low viscosity.

Equipment resistance:

Resistance requirements: Determine the maximum resistance allowed by the dust collector according to the requirements of the production process and the design of the ventilation system. If the equipment resistance is too large, it will increase the energy consumption of the ventilation system and affect the normal operation of the production equipment; if the resistance is too small, it may mean poor dust removal effect. Generally speaking, the resistance of the long bag offline pulse dust collector should be controlled at around 1000-1500Pa.

Resistance balance: When selecting a model, consider whether the resistance distribution of each part of the dust collector is uniform to avoid excessive or too small local resistance. If the resistance is uneven, it will cause uneven airflow distribution and affect the dust removal efficiency.

Installation space:

Equipment size: Select a dust collector model of appropriate size according to the size of the space at the installation site. Make sure that the dust collector can be installed smoothly at the designated location and that there is enough safety distance and operating space between it and the surrounding equipment and buildings.

Pipeline layout: Consider the location and size of the dust collector's air inlet and outlet, as well as the connection method with the ventilation duct to ensure a reasonable pipeline layout, smooth airflow, and reduce pipeline resistance and air leakage.

Operation and maintenance costs:

Filter bag replacement cost: Filter bags are consumable parts of dust collectors and need to be replaced regularly. The prices of filter bags of different materials and specifications vary greatly, and the workload and cost of replacing filter bags are also different. When choosing a model, you should consider the service life and replacement cost of the filter bags, and choose a model with high cost performance.

Energy consumption cost: The operation of the dust collector requires a certain amount of energy, such as compressed air and electricity. Choosing an energy-saving dust collector model can reduce operating costs. For example, the use of an efficient cleaning system and reasonable fan selection can reduce energy consumption.

Maintenance workload: Some models of dust collectors have complex structures and large maintenance workloads, and require frequent inspections and maintenance. When choosing, you should consider the company's maintenance capabilities and labor costs, and choose models that are easy to maintain and highly reliable.

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