Large reverse air dust collector, also known as a large reverse air bag dust collector or large bag dust collector, is a dry dust removal unit primarily utilizing woven fabric filter elements to capture solid particles in dusty gas. Below is a detailed introduction to the large reverse air dust collector:

Operating Principle:

Dust-laden gas is drawn into the lower ash hopper through the intake pipe under negative pressure. A flow-control plate is positioned in front of the intake, allowing coarser dust particles to fall into the hopper due to impact and gravity, while finer dust particles are filtered through filter bags and adhere to the inner walls of the bags. The purified gas then passes through the bag filter chamber, enters the exhaust pipe via a switch valve on the equipment's top, is drawn into the fan, and finally released into the atmosphere through the exhaust stack.

As the dust accumulation on the filter bags increases, the resistance reaches the specified level, the cleaning process begins. The cleaning method usually employs a single-chamber reverse airflow, which means closing the exhaust pipe and opening the reverse airflow pipe, cutting off the exhaust from the single chamber, and using reverse airflow to remove the dust from the filter bags. These dust particles fall into the ash hopper and are discharged through the ash removal system.

Features:

Quick: Large reverse-air dust collectors offer high dust removal efficiency, capable of handling dust particle sizes typically ranging from 5-10μm. The dust concentration of the flue gas after passing through the dust collector is usually below 50mg/m³, and can even reach below 10mg/m³.

High adaptability: This dust collector is capable of handling dusty gases, particularly suitable for treating gases with high concentration and humidity.

Tightly structured: Despite its large air handling capacity (typically ranging from 500 to 30,000 m³/h), it occupies a relatively small footprint, and features a large filtration area (usually between 50 to 2,000 m²), which aids in space conservation and reduces investment costs.

Operation Easy: The dust cleaning process is highly automated, making the operation simple and reducing the need for manual intervention.

Industry Applications:

Large reverse-air dust collectors are primarily used in the flue gas purification process in industries such as non-ferrous metallurgy, chemical, and building materials. They effectively control dust pollution, contributing to environmental protection efforts.

In summary, a large reverse-air dust collector is a quick and adaptable dust removal equipment, providing an effective solution for flue gas purification in the industrial sector.