Pneumatic Conveying Systems
Maintain and enhaces your Pneumatic Conveying Systems
Rajdeep’s proven Capabilities in Conveying System:
- Pneumatic Conveying Capacity up to 50 Ton Per Hour
- Pneumatic Conveying Length up to 1000 Mtr
- Pneumatic Conveying solids BULK Density ranges from 100 – 3500 Kg/m3
- Pneumatic Conveying system with Close Loop System by conveying media Inert Gas (Nitrogen)
- Solids conveyed like PTA powder, Polyester chips, LLDPE, ESP Dust, Talcum Powder, Grain Flour & many more.
Types of Pneumatic Conveying Systems
Dilute/lean Phase conveying systems
The defining factor for dilute phase conveying is the higher air velocities compared to dense phase conveying, typically ranging from 15 m/s to 25 m/s. The product remains in suspension flow throughout the pipeline’s length in this system.
The required air pressure or vacuum is lower, usually between 100 mbar(g) to 1000 mbar(g) for pressure systems and (-)100 mbar(g) to (-)500 mbar(g) for vacuum systems. Due to these higher velocities, material attrition or breakage is more significant because of the increased impact on metal surfaces.
The solids loading ratio, which is the ratio of the mass transfer rate of solids to the mass transfer rate of air, is lower, generally ranging from 1 to 10. To achieve the same throughput or capacity as dense phase conveying, dilute phase systems typically require pipelines with a larger diameter.
The conveyable distance is limited, usually up to 100-200 meters, depending on the material being conveyed. The system’s simplicity results in less automation and a reduced dependency on various valves.
The initial cost or CAPEX is lower for dilute phase systems due to simpler components.
Salient Features
- Use low pressure, high volume gas & high velocity to transfer powder or granular bulk solids up to capacity 30 TPH.
- Solid-to-air ratio ( Kg solid / Kg air) less than 10
- For the lean phase pressure system conveying length is up to 300mt. approx.
- For lean phase vacuum system conveying length is up to 150mt approx.
- Systems use a positive displacement blower (Required press. < 1 bar) to develop the required motive force.
- A Rotary Valve or Ventury can be used as a feeder in a lean phase conveying system.
- Lean phase systems are most used on those materials that are Non-abrasive, Non-fragile, Free flow, and moisture content up to 10%.
- Dust-Free Operation
Dense Phase conveying system
The defining factor for dense phase pneumatic conveying system is its lower air velocities compared to dilute/lean phase pneumatic conveying system, typically ranging from 3 m/s to 12 m/s. The product remains in either slug flow or fluidized dense phase flow, depending on its characteristics, throughout the entire conveying length.
The required air pressure or vacuum is higher, usually ranging from 1000 mbar(g) to 5000 mbar(g) for pressure systems and (-)500 mbar(g) to (-)950 mbar(g) for vacuum systems. With these lower velocities, material attrition or breakage in the pipeline is minimized due to the reduced impact on metal surfaces.
The solids loading ratio, which is the ratio of the mass transfer rate of solids to the mass transfer rate of air, is higher, generally ranging from 5 to 100. For the same throughput or capacity as dilute phase conveying, dense phase pneumatic conveying systems typically use pipelines with a smaller diameter.
Dense phase pneumatic conveying systems can cover much greater distances, typically up to a maximum of 200-400 meters, depending on the material being conveyed. However, due to the complexity of the system, the amount of automation required and dependency on various valves is higher.
The initial cost or CAPEX is higher for dense phase pneumatic conveying systems due to the involvement of more complex components.
Salient Features:
- Use High pressure, Low volume gas & Low velocity to transfer powder or granular bulk solids.
- Specially designed Pressure vessels with valves & air control are the key components of the system
- Solid-to-air ratio ( Kg solid / Kg air) should be more than 10
- For a Dense phase pressure system conveying length can be more than 1000 meters
- These systems use Compressed Air / Gas to develop the required motive force.
- Dense phase systems are most used on that material which is Abrasive, Fragile, High-density
- Dust-Free Operation
Various Types Of Equipment Used In Pneumatic Conveying System:
- Bag dump /Unloading Station.
- Roots Blower / Centrifugal Fan
- RAL (Rotary Air Lock Valve) / Venturi feeder
- Pressure Vessel & Control Instruments
- Product Separator / Vent Filter / Dust Collector
- Storage Silos/hoppers
- Special valves for diverting the flow/metering
- Control Panel
- Piping with special cross-section bends
- Gas cooling Heat Exchanger for Close Loop Systems
Applications:
- Chemicals
- Petrochemicals
- Pharmaceutical
- Distillery / Brewery
- Paint & Pigment Handling
- Food Industry
- Power
- Steel
- Cement
- Mineral Processing