Being the most dust-tight and efficient product of all time, pneumatic conveying systems offer the most practical method for moving the larger quantities of dry materials. These can be granulated, powdered or pelletized. The pneumatic conveying systems use air stream technology for moving materials through vertical or horizontal piping that is available primarily in vacuum or pressure modes.
These pressurized systems are known to have compressed air at system inlet to push material through piping. Then you have the vacuum systems, which are designed to apply vacuum at the delivery end for pulling material through piping. Vacuum and pressure systems can be widely used for dense or even dilute based phased operation.
More about dense phase systems
The available dense phase-based pneumatic conveying systems will have a lower air to material ratio. Velocities are available below the saltation level where the critical velocity at particles falls from the pipe’s suspension. So, the dense phase systems will move the material through piping in batches with discrete dunes or even plugs of material separated by the air pockets. The valving systems can be adjusted anytime for reducing air pockets.
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The dilute based phase conveying systems are known to have higher air to material ratio. With this system type, the material is primarily fluidized or just suspended in airflow and then it is moved towards higher velocities depending on particle density and size.
The dilute phase systems will deliver the material on a continuous point. Material is mainly supplied at the available pickup point and then conveyed to the receiver without any form of interruption.
Perfect understanding of the system
A fine grasp of the fine points of the pneumatic conveying equipment along with knowledge of material and its characteristics can eventually make or just break the system, which will otherwise function flawlessly 24 x 7. It comes with minimal attention, which is exactly what the maintenance managers, plant managers, and engineers are looking for while trying to implement pneumatic conveyor equipment.
Some people have stated that such a conveyor system design is not just science but more than that. It draws decades of proper experience to augment some of the scientific principles.
Even though it is true that most of the conveyor manufacturers use programs for the jump-starting design of complicated systems, the expertise of pneumatic conveying has gained as a result of years of applied practice that guarantees proper design.
This expertise is the one that allows conveyor manufacturers to resolve some of the impossible and tedious problems.
Making the absolute choice
Just by assuming that material can be pneumatically conveyed and without even considering any factor at a point, you can start considering the best pneumatic conveying with the lowest possible initial investment cost. Generally speaking, it can prove to be a dilute based pneumatic conveying system. Whether this system must operate under pressure or vacuum in the application, it solely depends on two promising factors.
The first point is air leaking into or just out of the system and its negative effect. For example, air leaking out of the system will give rise to toxic or explosive material. It might create one hazardous condition within the application. In such a case, a vacuum system is always a proper choice.
The other choice of pneumatic conveying depends on whether the materials are packed tightly and proven to be cohesive and build up on surfaces or noted to be fibrous. For such materials, the vacuum system is a smart choice as it pulls the particles apart during conveying other than pushing them into a line wall.
Just be sure to cover up the details first and finalize on the conveying equipment, which proves to be your perfect choice to make.