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Energy Innovation for Demonstration of Waste Heat Recovery, Efficiency Improvement and Fossil Fuel Displacement at Domtar’s Windsor, Quebec mill

Lead Proponent: Domtar Inc.
Location: Windsor, QC
EIP Contribution: $ 1,890,000
Project Total: $ 4,900,000
Strategic Area: Industry - Large Emitters

Project Objectives:

This R&D project will evaluate a suite of conversion technologies that will convert woody biomass at Domtar’s Windsor mill into value added bio-products including advanced bio-fuels. This will be done by generating data, modeling, and techno-economic evaluations combined with pilot-scale testing that are necessary to support future demonstrations. The commercial implementation of these advancements would lead to increased energy efficiency at the mill, reduced fossil fuel consumption, and increased carbon sequestration.

Specifically, the new technology advancements will:

  • Recover waste heat resources at the mill and use the waste heat to dry biomass as a pre-processing step;
  • Convert the dried biomass into an advanced bio-oil and bio-char (as a co-product) by an innovative fast pyrolysis technology, and evaluate the co-firing potential of the produced bio-oil in existing boilers at the mill;
  • Valorize bio-char (as a sequestrated carbon) into value added carbon-based products.
  • Convert low cost woody biomass (incremental pulp and underutilized wood) into high quality hydrolysates;
  • Ferment the hydrolysates into alcohols;
  • Convert the hydrolysates into algal biomass;
  • Convert algal biomass to proteins; and
  • Undertake techno-economic analysis and environmental assessments.

Expected Results:

Results of this project, if implemented on a commercial scale, would see a significant decrease in the mill’s fossil fuel usage, thus reducing its GHG emissions. Furthermore, similar reductions could be realized at Domtar’s other three Canadian pulp mills, resulting in a potential reduction of CO2 emissions per year. This technology could also find application in many other pulp mills worldwide with similar effect.

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