This shows some of the particle size ranges of common dust applications along with the range where dust collectors work. As shown cyclones and dropout boxes will not get 100% of the dust.

There can always be some material getting through as the particle size distribution might always include smaller dust than normal. Wet scrubbers and filter collectors (baghouses and cartridge collectors) will collect the larger particles easily. However, installing a pre-filter cyclone to remove the larger particles will lower water usage (wet scrubber) and increase filter life (filter collectors).  

Five Signs Your Dust Collection System Needs a Pre-Filter

To learn more about which dust collector, please contact our experts at 440-543-7400 or visit our website: www.dustcollectorhq.com.

To improve efficiency and safety, there is no substitute for an on-site inspection by an experienced expert. Click below to start with a free 20-minute phone consultation by clicking the button.

A prominent coffee bean roaster is planning on building a new roasting facility in New Jersey. The head engineer contacted Aerodyne about trying to find equipment that could separate the coffee beans as they are pneumatically conveyed from one portion of the facility to the other. The engineer specified that the problem the facility was facing was space.

How Aerodyne GPC operates Differently in Coffee Industry

After sending over the specs of the application, Aerodyne concluded that the roasting facility could easily house a GPC-20 horizontal dust collector for the operation. The Aerodyne GPC Dust Collector operates differently than other dust collectors. A sloped spiral inlet directs the dirty gas stream toward a fixed ground plate and hopper of the dust collector.

The ground plate forces vortex reversal to occur in a much shorter space, eliminating the need for a long, tapered body. As the dirty gas stream strikes the convex ground plate, fine particulate that has not completely made it to the dust collector walls is deflected into the hopper. The ground plate also shields collected particulate from the forces of the vortex reversal, acting as a barrier between the separation chamber and the collection hopper. This innovative design enables a compact dust collector to operate at high efficiency, even when installed horizontally.

The GPC offers a unique dust collection solution. With the compact size and excellent removal efficiencies, it is an economical and low maintenance solution to removing dust and particulate from an air stream.

Aerodyne GPC Used in Coffee Roaster's Process

To learn more about which dust collector, please contact our experts at 440-543-7400 or visit our website: www.dustcollectorhq.com.

To improve efficiency and safety, there is no substitute for an on-site inspection by an experienced expert. Click below to start with a free 20-minute phone consultation by clicking the button.

In dust collection one of the most important dust characteristics to define is the particle size of the dust. The larger the dust the easier it is to capture. While the smaller the dust particle the harder it is to capture and remove from the airflow. This applies to both heavy and light particles. What this means is that in order to accurately predict your removal efficiency, you need to know the particle size distribution.

Breakdown of Particle Sizes

The most useful particle size distribution includes a breakdown of the particle sizes under 50 microns in size. Most dust collectors will pretty much capture all or nearly 99% of particles greater than 50 microns, so it isn’t as important to know if you have 5% dust at 51 microns and 3% at 55 microns, a simple 8% over 50 microns would be effective.

However, when dealing with dust less than 20 microns, knowing the particle size distribution is very important. For example, some cyclones might get you around 85% removal of 10 microns dust but 60% of 5 microns dust and only 30% of 2 microns dust. So, if you have that 60% of the dust is less than 10 microns, it isn’t known how much of that is in the 2 microns ranger or the 10 microns range. This means that when calculating your removal efficiency, the estimated removal efficiency could range from less than 30% to 85%. The only way to know is to have a breakdown of the particle sizes.

Particle Size with Standard Deviation

Another way of providing a particle size distribution is to provide a mean particle size with standard deviation. This provides a decent approximation of the particle size. Personally, I would prefer the actual test data, because you are providing actual test data and not approximations. Depending on the process of dust generation, the approximation accuracy will vary. It also requires the person estimating the removal efficiency to calculate a particle size distribution. This takes more time and increases the chance of an error being introduced.

So, when you are looking to get your dust collector engineered, remember it is important to provide the equipment manufacturer with a particle size distribution. Often times you can send a sample in to a lab and within a week or so have a full distribution curve for a few hundred dollars. This will allow the manufacturer to better understand what they have to capture and select the best equipment for your application.

How Do Horizontal Dust Collectors Work?

To learn more about which dust collector, please contact our experts at 440-543-7400 or visit our website: www.dustcollectorhq.com.

To improve efficiency and safety, there is no substitute for an on-site inspection by an experienced expert. Click below to start with a free 20-minute phone consultation by clicking the button.