Central Dust Collection System by S. P. Industries

One large central dust collector system can often do the work of dozens of smaller, individual air cleaners, providing complete industrial plant dust collection for the entire facility.
Central dust collection systems generally consists of large media dust collectors (such as cartridges or baghouses) with an inertial separator used as a pre-sorter (such as a cyclone or drop out box).  The pre-sorter removes large chips, then the media filtration removes fine particles.  Large chips are collected in bins or drums.
Filtration media often uses some form of cleaning such as mechanical shaking or a sudden pulse of air that knocks built up dust cake from the filters.  Electrostatic precipitators are rarely used for large dust collectors, since they do not have the capacity to store a large volume of dust.  Though, electrostatic air cleaners are frequently used along side central systems to clean atmospheric background dust that is not captured by the ducted system.
Advantages of a Central Dust Collection System
Equipment Cost:  Often the deciding factor when choosing a dust collection solution.  Depending on the cost of ductwork and installation, a central dust collection system can initially cost less than purchasing 12 or more individual dust collectors.
Waste Removal:  As dusty air is filtered, waste dust is collected in bines, drawers or hoppers.  Waste removal from one location verses many locations is easier and thus more cost effective.Filter Replacement:  Replacing filters from 12 or more separate machines will cost more than regular filter replacement of one large dust collector designed for heavy loads.
Energy Consumption:  Your energy bill will be lower when powering one big dust collector than if you try to power a dozen or so dust collector motors.Noise:  Imagine the noise from 12 or more dust collector motors and blowers running in a work area.  Now take that noise, put it all in one big motor / blower and tuck it away in its own area, away from workers.
Maintenance:  You can go either way on maintenance.  With multiple air cleaners, you have that many more parts to replace.  With one central dust collector, you only have one set of components to maintain.  On the other hand, if your central dust collection system goes down, all workstations go down.