Convert waste to heat and power

Waste heat recovery

Waste incineration with heat recovery forms a cost-effective treatment solution, complying with the pillars of “Sustainability” and the requirements of “Resource Efficient and Cleaner Production”. Additionally, waste heat recovery avoids the use of non-renewable fossil fuels.
The rotary kiln incinerator process produces hot flue gases, which can be made suitable for waste heat recovery. Financial feasibility depends on the waste type, size of the incinerator and the selected energy recovery medium. Waste heat recovery becomes more viable at a higher thermal input.

The recovered waste heat can be converted into several viable options, with multiple applications.

01.

Hot ambient air
  • Production of chilled water via an absorption chiller, applied for storage room cooling.
  • Combustion air preheating to support other combustion processes.
  • Drying processes.
  • Hot water production.
  • District heating.
  • Steam generation.

02.

Thermal oil

Thermal oils or thermal fluids are heat transfer media that are used to transfer thermal energy in those applications or processes where high temperatures are required.

  • Chilled water production.
  • Direct high temperature heating of other production processes.
  • Hot water production.
  • District heating.
  • Steam generation.

03.

Steam
  • General energy supply as utility steam for other production processes.
    • Hot water production.

    • Direct and indirect process heating.

    • Atomization, to maximize combustion efficiency.

    • Drying purposes.

    • Cleaning applications.

  • Power generation through a steam turbine or engine.

04.

Electricity
  • Electrical power generation by an Organic Rankine Cycle (ORC). An ORC converts recovered waste heat to combined heat and power (CHP), where steam based energy recovery is not practically feasible, specifically for energy recovery at lower flue gas temperatures and smaller thermal input capacities.
  • Power generation by a steam turbine, specifically for energy recovery at higher flue gas temperatures and larger thermal input capacities.
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