Domtar was faced with replacing a non-pressurized Eop upflow pre-tube with a new pressurized Eo(HT) pre-tube vessel at its Dryden, Ontario pulp mill. The plan was to remove the existing oxygen mixer and replace it with a modern mixer to improve oxygen mass transfer. With a longer retention time and a higher operating temperature than the existing pre-tube, the project objectives include chemical savings and allowances for a future unbleached production rate of 1250 ADMt/d.

Domtar engaged Allnorth to define the project scope and complete FEL3 engineering deliverables for a capital cost estimate (CCE ±10%) that were required for Domtar’s gate 3 appropriation review.

In addition, Allnorth provided air emissions permitting support and a facilitator for process hazard analysis (PHA).

RESPONSIBILITIES

  • Project/engineering management for FEL3 study
  • Cost estimating (+/-10%)
  • Project schedule
  • Process engineering
  • Civil/structural engineering
  • Mechanical/piping engineering
  • Electrical, instrumentation & controls engineering
  • Air permitting assistance
  • Process hazard analysis

LOCATION

  Dryden, Ontario

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With locations across Canada and in the US, 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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