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QuestionnairePressure Dense Phase (Continuous)
Theory
Continuous Pressure Dense Phase Conveying Systems using High Pressure Rotary Valves are a recent innovation to the field of pneumatic convey systems.
These systems are similar to conventional lean phase pressure convey systems but use high pressure compressed air to move the powder, and material velocities are much lower.
Control systems frequently use variable airflow and pressure regulators to optimise the system parameters.
As these systems operate on a continuous basis - product is constantly supplied at the starting point, and arriving at the destination without interruption - this makes them suitable for dosing and continuous weighing applications.
Applications
These systems convey materials at moderate capacities over medium to high distances, from single or multiple points to multiple destinations. The lower convey velocities allow for conveying of friable powders and other materials which may be damaged by conventional systems.
Specifications
| Convey Rates: | Low to High, typically from <1 to 50 tonnes/hr |
| Convey Velocities: | Typically 2-10 m/s |
| Convey Distances: | Up to 200m or longer |
| Air Mover: | Compressor (Screw, rotary, reciprocating) |
| Operating Pressure: | Up to 4 Bar g |
| Material/Air Ratios: | Medium, typically 10-50 kg/kg |
| Note: All values approximate, refer to Nu Con for advice about how to convey your product. | |
Options
- High efficiency powder infeed hoppers/transitions and vent filters
- Air control via pressure/flow regulation and/or sonic nozzles
- Weighing and dosing equipment
- Specialised feeding systems for cohesive, sticky or lumpy products, and other special properties
- In-Line sifting, sampling, delumping, metal detection and magnetic separation systems
- Stepped convey lines to reduce terminal velocities, abrasion and degradation
- Stainless Steel construction for sanitation or corrosion resistance
- Demountable and polished designs to USDA/3A standards for ease of cleaning
- And more ...