When many dust sources exist, set up the dust collection system in concentrated zones. Each system should connect to a limited number of exhaust points. If you cannot achieve hydraulic balance through adjustments, consider installing balancing valves on branches with lower resistance. Furthermore, place these valves on vertical ducts to enhance performance.Talk to us if you are dealing with these challenges.

Calculate the exhaust volume based on the maximum simultaneous exhaust volume and the leakage volume from intermittent points. Ensure each intermittent point has valves linked to the process equipment. Additionally, maintain leakage volume at 15% to 20% of normal exhaust volume when the valves are closed.

Note: When designing multiple exhaust cabinets as one system, determine the system’s airflow based on the total airflow of the cabinets used at the same time. Install a valve for airflow regulation at each exhaust cabinet’s outlet. Also, ensure that the fan has variable frequency drive capabilities.

2. Types of Dust Collection Systems

Bag dust collectors can be classified into three types based on production processes, equipment layout, and exhaust volume:

• Local Dust Collection: For example, install bag dust collectors directly near production equipment. This setup captures and recovers dust on-site. It requires minimal or short ducting, making it efficient.

• Dispersed Dust Collection System: In contrast, when exhaust points in a workshop are spread out, combine appropriate exhaust points based on the nature of the conveyed gases. Therefore, position the industrial dust collectors and fans as close as possible to the dust-generating equipment. This approach leads to shorter ducts and easier pressure balance.

• Centralized Dust Collection System: This system is suitable for workshops with concentrated dust sources. In this case, centralize all exhaust points or arrange several dust extraction systems together. Centralized systems simplify dust handling and maintenance. However, they often require longer and more complex ducting, which can be a drawback.

Application in Cement Plants

In cement plants, bag dust collectors play a vital role in several areas:

• Raw Material Handling: They capture dust generated during the processing and transportation of raw materials like limestone and clay.

• Milling Process: During the grinding of cement clinker and other materials, these collectors effectively manage the fine dust produced.

• Mixing and Packaging: Bag dust collectors control dust emissions during mixing and packaging, ensuring a clean environment and high product quality.

• Kiln Emissions: They help in purifying exhaust gases from the kiln, reducing air pollution and adhering to environmental regulations.

3. Layout Guidelines for Dust Collectors

When laying out your bag dust collectors, follow these principles:

• First, position the dust collector above equipment like belt conveyors and hoppers if you can integrate the collected dust into the production process. This improves workflow significantly.

• Alternatively, if the collected dust cannot easily integrate, place the dust collector in a suitable location with a dust storage bin. This ensures easy access for maintenance.

• Additionally, locate dust collectors in the negative pressure section of the system. If they are in a positive pressure section, use exhaust fans to manage airflow effectively.

• Ensure the pressure loss at each exhaust point does not exceed 10%. If you cannot achieve this through adjustments, consider installing airflow regulation devices to maintain efficiency.

• Finally, for wet gas purification equipment at risk of freezing, implement anti-freezing measures. In colder regions, install wet gas purification equipment indoors.

Note: Position flue gas dust collectors outdoors to ensure proper operation.

Make sure that the dust discharge pipes of dry dust collectors and the wastewater discharge pipes of wet dust collectors have measures to prevent air leakage. This helps maintain efficiency and safety.