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In 2015 Allnorth was retained by Clearwater Paper Corporation to provide design and engineering services for their pulping optimization project.

Allnorth’s scope of work involved all the civil, structural, mechanical, electrical and controls design for the installation of third party equipment/technology. This included the chip conveyors, the cooking system, diffusion washer, blow tank, polysulphide liquor preparation, high density pulp storage, bleach plant upgrade, and the balance of plant changes associated with the cooking system, plus the necessary building alterations.

During 2014, Allnorth had developed a solution with the client, using comprehensive energy efficiency studies that leveraged Allnorth’s extensive knowledge of the pulp-making process and advanced process simulation capabilities. This approach enabled accurate predictions of outcomes for a number of alternative implementation methodologies, and determined the solution that would deliver the highest rate of financial return and environmental sustainability.

As the world’s first purpose-built polysulfide pulp digester, this transformative project sets new industry benchmarks for pulp yield, energy conservation and reduced emissions.


  • Project management
  • Process engineering
  • Civil / structural engineering
  • Mechanical / piping engineering
  • Electrical engineering
  • Instrumentation engineering


Pacific Northwest US

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With locations across Canada and into the US and Mexico, Allnorth prides itself on being responsive to client needs and to providing leading-edge methodologies, technologies and protocols. Having a local presence helps us build strong relationships, and working cross functionally throughout the company helps us leverage the strengths of our entire team to deliver successful client solutions. Contact us today for more information as to how we can work together for you.

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