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Dilute Phase Pneumatic Conveying

Dilute Phase Pneumatic Conveying

What is a Pneumatic Conveying System?A pneumatic conveying system is an industrial bulk material transfer technology tha...

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Dilute Phase Pneumatic Conveying

Pneumatic Conveying

DUCON

What is a Pneumatic Conveying System?

A pneumatic conveying system is an industrial bulk material transfer technology that transports dry bulk materials (like cement, fly ash, flour, plastic granules) from one point to another through pipelines safely and in a closed circuit using compressed air or vacuum.

  • Working Principle: Materials are pushed or vacuumed through the pipeline by the kinetic energy of pressurized air supplied by blowers or compressors.
  • Dense Phase Conveying (Denseveyor): Transports material in plugs through the pipe at low air velocity and high pressure, minimizing wear and dust generation. Ideal for fly ash and cement.
  • Dilute Phase Conveying: Efficiently transfers light particles in a continuous suspended flow using high air velocity and low pressure.
  • Advantages: Ensures zero dust emission and product loss due to its entirely enclosed design. Offers virtually zero maintenance costs compared to mechanical conveyors.

DUCON Dilute Phase Pneumatic Conveying

DUCON Dilute phase pneumatic conveying is a method of moving non abrasive, non-fragile materials that have a lower bulk density. The system incorporates a high gas volume, low pressure process, entraining the materials and generally conveys one of two ways: pressure or vacuum. In pressure conveying a high volume of low-pressure air transfers material at a high velocity. In vacuum conveying a high volume of negative-pressure air transfers material at a high speed. Common materials suitable for dilute phase pneumatic conveying are flours, resins & compounds, specialty chemicals, and more.

  • A COST-EFFECTIVE WAY TO CONVEY NON-FRIABLE,

  • NON-ABRASIVE MATERIALS

  • DILUTE PHASE

  • PNEUMATIC CONVEYING

  • OUR SOLUTIONS


DUCON designs custom solutions to meet your needs. We understand that processes change, so we design flexible systems to evolve with your dynamic needs. Our designs incorporate robust components such as heavier sheet metal and stronger bulk bag unloaders increasing system life expectancy and reducing maintenance costs.

Pressure Conveying Systems

Positive pressure dilute phase systems operate above atmospheric pressure. This system is used to convey bulk materials from single or multiple intakes through a pipeline to one or more destinations. Here, powder is separated from air through a filter.Through an airlock, powder is dosed into the airflow and transported in a continuous flow at a relatively high velocity, through the pipeline to the dedicated destination. The blower pump is equipped with a pressure transmitter to protect the powder-to-air-ratio in order to avoid blockage in the pipeline.Pressure systems typically have higher capacities and can convey product over further distances than a vacuum system.Daniatech pressure airlock hopper is equipped with air leakage venting, level sensor and service manway. The Daniatech airlock ensures a gentle product flow.

Where does it fit best?

  • Pneumatic conveying is a strong option for cement, fly ash, mineral powders, and fragile bulk-solids transfer where closed handling matters.
  • On long routes, multi-turn lines, and silo transfers, it can offer a more compact solution than mechanical conveyors.
  • Where dust control and housekeeping matter, it supports a cleaner process environment.

Selection criteria

  • Particle size, bulk density, abrasiveness, and fragility are core design inputs.
  • Line length, bend count, air velocity, and pressure regime must be assessed together.
  • The choice between dense and dilute phase should balance energy, wear, and product integrity.

Operation and maintenance notes

  • Feed stability, airlock selection, and line build-up behavior should be monitored routinely.
  • Bend wear, plugging tendency, and blower/compressor loading are the main maintenance themes in the field.
  • If velocity is too high, wear rises; if too low, build-up and plugging become more likely.

Frequently Asked Questions

How do you choose between dense and dilute phase?

The decision depends on material sensitivity, line length, wear expectations, and the required transfer regime.

Is pneumatic conveying suitable for every material?

No. Material flow behavior, fragility, and tendency to build up all affect whether pneumatic transport is the right fit.

Which components deserve the closest maintenance attention?

Feed equipment, bends, airlocks, and the blower/compressor package usually need the closest monitoring.

Dilute Phase Pneumatic Conveying

Quick Info

Closed-line design helps reduce dust leakage and product loss
Material behavior and line geometry sit at the center of the design
Dense-phase and dilute-phase layouts answer different process priorities

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