Pressure Conveyors

We make our pressure conveyors to match your needs

Pressure conveying is one of the most efficient and economical ways of handling granular, grainy, powdery bulky process industry materials. This is primarily due to low operational expenses, versatility with respect to lay-out and high capacity. Pressure conveying systems are often divided into dense-phase conveying and dilute-phase conveying. Common feature is that high pressure compressed air is utilized in both applications.

Pressure conveying operates in a batch mode. At Kopar, we strongly favour pulsating dense-phase conveying, whenever possible, as it minimizes operational expenses due to smaller need of compressed air. Furthermore, low material velocity results in significantly decreased wear which is of great value for high availability and low maintenance cost. Operational principle of pulsating dense-phase conveying is such that material is fractioned by air into smaller pieces of individual loose plugs which are conveyed through the pipeline all the way to the receiving silo. The system is very easy to operate as it is fully automated and can easily be integrated with the plant’s control (DCS) system. The system offers following benefits: low energy consumption, low wear of components (especially bends), easy maintenance, and flexibility with respect to layout. Furthermore, Kopar has its own design and manufacturing for the most critical component, i.e. cupola valves.

In addition to dense-phase pressure conveying, also lean-phase or dilute-phase pressure conveying can be applied with a compressed air pressure system. This is primarily used for conveying of longer distances, which often require greater velocities, and is thus, not applicable to conveying of very abrasive materials for distances over 500 m.

Long history with numerous industrial pneumatic conveying projects

We have over 40 years of experience concerning numerous industrial pneumatic conveying projects including engineering, manufacturing, testing, erection, commissioning, and life cycle services. During our history, we have developed our technology to meet our customer’s highest requirements based on the achieved experience of different material behaviour.

With hundreds of delivered pressure conveyors alone in past decade, our reference list includes thousands of delivered pneumatic conveyors since 1970’s.

Technical Specifications

The full equipment typically consists of an upper buffer bin (optional), cupola valve, pressure vessel, fluidizations system, control unit, piping, receiving bin and silo filter. The material flows to the pressure vessel, and when it is filled, cupola valve closes and conveying sequence starts until the vessel is empty.

Used materials are carbon steel, wear resistant steel, acid proof stainless steel or stainless steel.

Typical features of Kopar’s pressure conveyors, dense-phase (dilute-phase) 

  • Capacity 0 – 70 t/h (0 – 100 t/h)
  • Pressure 0,2 – 7 bar (0,2 – 7 bar)
  • Air velocity 7 – 10 m/s (15 – 50 m/s)
  • Material velocity 3 – 10 m/s (15 – 40 m/s)
  • Solids loading ratio µ > 15 (µ < 12)
  • Pipeline length 10 – 500 m  (10 – 1 500 m)
  • Max temperature 250 °C (250 °C)

Standard sizes of the pressure vessel (litres):

  • ELMO20 / ELMO50 / ELMO100 / ELMO250 / ELMO500 / ELMO1000
  • ELMO2000 / ELMO3000 / ELMO5000 / ELMO7500 / ELMO10000

Suitable usage cases for

Pressure conveyors are suitable for several industries: energy and power industries, pulp and paper plants, metallurgical smeltersmineral and chemical industry. Our objective is always to

  • maximize the availability by minimizing the risk of any unexpected shutdowns and maintaining smooth operation
  • maximize the lifetime of the wear parts
  • minimize the operational and maintenance expenses,

Therefore, we offer our unique specialists and knowhow to update the equipment functions to meet required performance variations and beyond.

Contact us for more information