Energy, Recovery, Lime Kiln and Recaust

November 5 - 8, 2023 | Atlanta, Georgia

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Energy, Recovery, Lime Kiln and Recaust (ERLR)

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The chemical recovery cycle makes kraft pulping economically feasible. Key unit operations including the recovery boiler, recaust plant, lime kiln and power generation have significant impacts on maintaining high mill production rates. The purpose of this year’s sessions and panels are to provide experiences from industrial and academic experts on equipment maintenance, process chemistry and new technologies.

The ERLR track will provide participants with both fundamental and practical knowledge on key process areas in a mill, including evaporators, recovery boiler, recaust plant, lime kiln and energy generation. Topics are focused on maximizing the efficiency and throughput of the recovery cycle. Participants can also attend panels for in depth discussions with industry experts.

Learning outcomes: After successfully completing the sessions in this track, participants will be able to go back to their workplace and:

Demonstration of learning outcomes: After attending the ERLR presentation sessions attendees will have a better understanding of how to implement:


Energy, Recovery, Lime Kiln and Recaust (ERLR)  Track Schedule

(Program is subject to change.)

Tuesday, November 7th


10:30am - 11:30am
Session 8: Lime Kiln Structure and Unit Operations

Session Chair: Nikolai DeMartini, University of Toronto 
Location: Greenbriar

  1. The Untapped Potential for Firing Non-Fossil Fuels in Rotary Kilns
    Tejas Ashar Metso UK

  2. Refractory Wear Characterization in Lime Recovery Kilns
    James Hemrick, Oak Ridge National Laboratory
  3. Rotary Kiln Support Systems: Reviewing Journal Bearing Function, Operation, and Maintenance 
    Andrew Wisner, NAK Kiln

10:30am - 12:00pm
Session 10: Boiler Optimization and Improvements

Session Chair: Chris Jackson, Paragon Consults
Location: Baker

  1. Real Measurements Lead to Real Understandings and Better Operating Control of the Recovery Liquor Cycle 
    John Porter, FITNIR Analyzer, Inc.

  2. Bottom‐Up Improvement of the Boiler Feedwater System
    James Harriz, Jacobs Engineering Group, Inc.


1:30pm - 3:00pm
1:30pm - 2:30pm
Session 14: Mud Filters for Lime Kiln Operations Panel

Moderator: Peter Gorog, Houghton Cascade Holdings, LLC; Glenn Hanson, Metso
Location: Courtland


  1. Common Cloth Failure Modes that Lead to Filter Performance Losses & Optimized Shower Flow for Efficient Cake Washing and Drying
    Trevor Van Bavel, McFarlen Engineering

  2. Precoat Continuous Cleaner Optimization & Technology Improvements in Lime Mud Precoat Filters
    Lindsay Brandino Rawls, Andritz Pulp & Paper

  3. Lime Mud Filter (LMF) Optimization
    Tobin Alt, Kadant Black Clawson, LLC

Session 15: Evaporation Unit Operations and Black Liquor Measurement

Session Chair: Matthew Tomkins, FPInnovations
Location: Greenbriar

  1. Continuous, Real‐time Measurement of Black Liquor Chemical Makeup Using Static Optics FTIR Spectroscopy
    Adam Wilson, Keit Spectrometers

  2. Modeling the Dynamics of Evaporator Wash Cycles
    Jasmine Kung, University of Toronto


3:30pm - 5:00pm
Session 17: Unit Operations Recaust/Kiln

Session Chair: Thanh Trung, FITNIR Analyzers Inc.
Location: Greenbriar

  1. Factors Affecting on the Settling and Filtering Properties of Green Liquor Dregs 
    Elizabeth Maggs, University of Toronto

  2. Factors Affecting Phosphorus Up-take/Dissolution during Slaking and Causticizing
    S. Maryam Sadegh Mousavi, University of Toronto (presented by Nikolai DeMartini, University of Toronto)

  3. Online Image Analysis of Nodule Particle‐size Distribution for the Control of Lime Kiln Operation 
    Sven Hermansson, Södra Skogsägarna


Wednesday, November 8th


8:30am - 9:30pm
8:30am - 10:00pm
Session 18: Using Technology to Simulate and Optimize a Kraft Mill

Session Chair: Jack Porter, FITNIR Analyzers Inc.
Location: Courtland

  1. Optimum Steam Plant Efficiency Through Advanced Controls and Energy Dashboards
    Ben Janvier, Enero Solutions

  2. Understanding the Energy and Emission Implications of New Technologies in a Kraft Mill: Insights from a CADSIM Plus Simulation Model
    Adam Rogerson, NRCan

Session 20: Kraft Liquor Cycle Chemistry

Session Chair: Alex Moline, Domtar
Location: Greenbriar

  1. Precipitator Ash Addition to Black Liquor to Reduce Evaporator Scaling – Understanding the Fate of the Ash
    Ahmed Khafhafer, FPInnovations

  2. Sulphur Makeup in an Unbleached Kraft Mill
    Mehul Chauhan, Hinton Pulp West Fraser

  3. Effect of High Sulphate Content on Fluidity of Recovery Boiler Molten Smelt
    Honghi Tran, University of Toronto


Session 21: Alternative Fuel Pathways for Kraft Pulp Mills to Reduce CO2 Emissions for Lime Kilns

Session Co-Chairs: Nikolai DeMartini, University of Toronto and J. Peter Gorog, Houghton Cascade Holdings LLC**
Location: Baker


  1. Mill Experience Firing Biofuels in a Kiln
    Tord Hultberg, Sodra

  2. DOE Program on Hydrogen in the Glass, Steel and Paper Industries
    James Hemrick, Oak Ridge National Labortory

  3. Alternate Kiln Fuels – The Canadian Prospective
    Wei Ren, FPInnovations 


10:30am - 12:00pm


Session 22: NPEs and Overall Process Mill/Recaust

Session Chair: Wei Ren, FPInnovations
Location: Greenbriar

  1. Effects of the Variability of Wood Chip Composition on Recovery Cycle Operations
    Torsten Meyer, University of Toronto

  2. Predicting Non-process Element Behavior in Modern Pulp Mills
    Camilla Karlemo, Valmet

  3. Results of Causticizing Plant Targets on the Kraft Mill Operation
    Travis Conner, Valmet