Kraft Mill Hot Water Heat Recovery System, Catalyst Paper

Allnorth designed and implemented a heat recovery system that reduced water use and steam consumption in the a kraft mill. The first phase involved reclaiming warm water produced by the R8 generator and blending it with fresh mill water from the cool stream that fed the bleach plant caustic effluent heat exchangers. The second phase involved reclaiming excess warm water from the recovery evaporator surface condensers to displace fresh water going to the M & D digester blow heat recovery system. Overall, this project reduced steam consumption by approximately 3.3 kilograms per second (kg/s) and lowered mill water usage by approximately 60 litres per second (l/s).

Allnorth’s responsibilities for this project included:

  • Process engineering
  • Mechanical engineering
  • Structural engineering
  • Piping design
  • Project management
  • Capital cost estimation


About this pulp and paper project

Catalyst is western North America's largest producer of mechanical printing paper. The Elk Falls Division, located near Campbell River on Vancouver Island, British Columbia, produces newsprint and uncoated mechanical specialty papers.

Services in this project

Mechanical Engineering

Allnorth provides comprehensive mechanical and piping engineering services to industrial projects. Our in-house  multidisciplinary expertise allows Allnorth to offer integrated service packages for clients in multiple sectors.

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Process Engineering

Allnorth provides integrated process engineering service packages for industrial projects. We recognize that downtime is expensive for our clients, so our teams specialize in retrofitting new systems into existing operations with minimal disruption.

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Project and Construction Management

At Allnorth, we believe that communication and teamwork, from start to finish, are key to the successful execution of any project. We work closely with our clients to plan and manage projects from initial concept through to delivery.

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Structural Engineering

Allnorth provides comprehensive structural engineering design services for industrial, commercial, and municipal clients. We design short- and long-span bridge structures; municipal, industrial, and commercial buildings; and temporary construction works.

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