Solex Thermal Science > Solex Products > SIGMA 400 Cooler

Sigma400 Series Bulk Solids Cooler

The SIGMA400 SERIES BULK SOLIDS COOLER is engineered to efficiently cool a wide variety of free flowing bulk solids such as sugar, fertilizer, chemicals, plastics, dried biosolids, minerals, and many other types of granular, crystals and powders.

1SLOW & CONTROLLED PRODUCT FLOW
Bulk solids materials pass slowly downward between a series of vertical hollow heat exchange plates.
Why It's Better

2INDIRECT PLATE COOLING
Cooling water flows through the plates to cool the material by conduction.
Why It's Better

3MASS FLOW TECHNOLOGY
The mass flow discharge feeder creates uniform product velocity through the cooler and regulates the product flow rate.
Why It's Better

4VERTICAL CONFIGURATION 
Bulk solids pass through the vertical cooler by gravity.
Why It's Better

Sigma 400: How It Works

Why It's Better

Material The slow and controlled movement of the bulk materials produces a superior final product.  It prevents product abrasion and degradation so that there is no change in particle characteristics or crystal shape.

Why It's Better

Typical Energy Requirements The indirect plate cooling design means air is not used in the cooling process.

This design is superior because:

  • It is ultra efficient, using up to 90% less energy than technologies requiring the use of air
  • Emissions, dust, fines and odors are eliminated because air is not used to directly cooling the product 
  • Installed capital costs are reduced due to the elimination of costly and unnecessary air handling equipment such as large diameter air ducting, motors, fans, scrubbers, chillers, and emissions controls.
  • A superior final product is produced.  Since air is not in contact with the product, risks of bacterial contamination, odor contamination, and product moisture content changes, are eliminated. 
  • The plates are configured to enable easy access for inspection and cleaning. The design makes it possible for individual plates to isolated or replaced

Why It's Better

Plate Close Up Mass flow design means the product moves with uniform velocity through the heat exchanger. This feature, combined with long residence times (typically 5- 10 minutes), enables even temperature distribution as the product passes through the heat exchanger, producing remarkably stable and uniform final product temperatures.  

Why It's Better

Solex Footprint The vertical configuration makes this design both compact and modular.

  • The compact installation footprint makes this design easy to integrate in existing plants and is ideal for de-bottlenecking, revamps and capacity increase.
  • The clever modular design means that additional heat exchanger plate banks can be stacked if increased cooling capacity is required in the future.