Central Dust Collection Systems for Conveyor Operations
The most effective method for dust collection in a conveyor system is to connect all individual collection points via ducting to a single, remote dust collector. This central dust collector includes fans, filters, and a collection hopper. The filtration system processes all the dust extracted from the entire conveyor system, collecting it for disposal or reintegrating it into the process at a convenient point.
Central dust collection systems are particularly advantageous when all dust-generating points operate simultaneously or when processing all dust at one site is preferable. This approach is also beneficial when there is limited space near the conveyors for dust collection and processing equipment, or when safety considerations require the dust collector to be positioned at a safe distance. In some cases, it is better to remove fine particles from the main material flow. Additionally, central dust collectors are often preferred for handling hot dust, as its temperature may decrease while traveling to the central collector or by mixing with "fresh air" in the flow.
However, central dust collection systems have some drawbacks. They require more complex engineering and extensive ducting systems. Since all dust collection points must operate simultaneously, this method can lead to higher operating costs. Servicing any single component necessitates shutting down the entire system. The fan motor for a central collector may need to be significantly larger due to increased static pressure and losses from ductwork as the system expands. Additionally, an extra material handling system is needed for the collected dust, which, if not properly sized and operated, can create its own dust problems.