Thermal Energy International Inc. has installed its Flu-Ace waste heat recovery system at the Fortress Specialty paper mill.

Thermal Energy International Inc., Ottawa, has installed its Flu-Ace waste heat recovery system at the Fortress Specialty paper mill in Thurso, Quebec. The company will deliver recovered energy at the mill through next year.

The agreement may be worth up to $1.8 million based on the estimated amount of waste energy recovered during that time.

Prior owners of the mill had contracted with Thermal Energy to install a Flu-Ace system on one of the two existing recovery boilers to generate hot water from recovered waste heat.

Thermal Energy’s heat recovery technology at Minas Basin Pulp and Power Co., in Hantsport, Nova Scotia, recovers waste heat from the paper-making dryer and uses it in the manufacturing process to offset the mill’s oil consumption.

The project uses a Flu-Ace direct-contact condensing tower to recover both sensible and latent heat from the pocket vent exhaust and apply that heat at 145°F (62.7°C) to preheat paper machine water streams, building heat and boiler feedwater using a series of plate-type heat exchangers.

Thermal Energy notes that the system:
  • Captures waste heat previously discharged into the atmosphere.
  • Reduces fuel consumption 15 percent to 20 percent (approximately $1 million a year).
  • Reduces CO2 by 8,350 tons.
  • Lowers SO2 by 92 tons.
  • Cuts NOX by 16 tons.
By slashing annual greenhouse gases and other emissions, the system produces reductions that are the equivalent of taking 1,830 cars off the road, Thermal Energy says.

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