In Default category, News, Waste-to-Energy (WTE), Dryclone®, Drying system, Dryclone, Coal replacement, Eliminate MSW from landfill

Dryclone® Solid Recovered Fuel (DSRF) is a clean, renewable fuel that is ideal for replacing coal in cement kilns.

  • DSRF is made by DSRF Plants from the entire municipal solid waste (MSW) stream, including wet organics (less metals and inerts).
  • Dryclone’s unique aerodynamic pulverizing dries, sizes, and blends MSW using only air.
  • DSRF is fully homogenized and sized to meet the requirements of both calciners and main burners.
  • DSRF has highly consistent dryness, bulk density, and energy content.
  • The moisture content of DSRF is under 15%.
  • The fluffy characteristics of DSRF make it ideal for pneumatic conveying into burners.

    Dryclone DSRF including organic waste

Unique qualities of Dryclone Solid Recovered Fuel

The dried organic materials in DSRF are homogenized evenly among the lower-energy content fibre fraction and the higher-energy content plastics. As a result, DSRF is a renewable fuel product that’s more consistent in dryness and energy content than conventional SRF.

The caloric value, moisture content, particle size, and bulk density of DSRF can be tuned to match exactly the requirements of existing coal burning cement plants. Emissions from DSRF are typically lower than coal. Plus Dryclone’s ability to eliminate landfill results in huge reductions in greenhouse gases.

Dryclone DSRF Plants also create opportunities to include other wet organic materials in renewable fuels, such as C&I food waste, agricultural waste, sewage, and post-anaerobic digester (post-AD) sludge.

How it works

Dryclone Drying System

The Dryclone uses only air in huge quantities (up to 60,000 CFM (28m3/s)) at very high speeds (over 400mph (640kph)). There are no moving parts in the feedstock’s path – it’s simple, rugged, reliable, and can run for weeks at a time.

Inside Dryclone, the managed air stream performs four functions at once to maximize energy efficiency:

  1. High-speed conveying at low pressure (~0.5bar (~7 psi)) results in minimal wear.
  2. Conventional evaporative drying uses the natural heat of compression in the blowers with further drying efficiency from available waste heat.
  3. Unique aerodynamic pulverizing and homogenizing results in extremely consistent energy content and dryness.
  4. The aerodynamic pulverizing opens the cell structure of organic materials and removes water as atomized droplets carried away by the air. This results in up to 30% more energy-efficient drying.

Dryclone’s low-temperature drying means the feedstock retains maximum energy value.

Contact us today to learn more about replacing coal with DSRF in cement kilns, as well as funding opportunities.

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