Energy, Recovery, Lime Kiln and Recaust

November 5 - 8, 2023 | Atlanta, Georgia

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Energy, Recovery, Lime Kiln and Recaust (ERLR)


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 1
10:30am - 12:00pm

Session 8: Plant Design


Session Chair: Danny Tandra, Clyde, Industries, Inc.


Factors Affecting Deposit Formation in Foul Condensate Stripping Systems

Torsten Meyer, University of Toronto

Black Liquor Evaporators Upgrade - How Many Effects?

James Cantrell, Jacobs Engineering

Developing a Detailed Simulation Model for Complete, Mass, Energy, and Chemical Balancing of an Intergrated Pulp and Paper Mill

Michael Erbes, Enginomix, LLC
10:30am - 12:30pm

Session 9: Lime Kiln Operation & Hardware


       Session Chair: : Shawn Russell, FITNIR Analyzers Inc


Improving Lime Recovery Kiln Operation Using CFD Modeling

Zhi Xu, Metso Outotec

Rotary Kiln Monitoring with Shell Temperature Visualization and Process Analytics

Lee Rippon, University of British Columbia

Dynamic CFD Modelling of Calcination in a Rotary Lime Kiln with an External Dryer

Jarod Ryan, University of Toronto
      Innovative Refractory Solutions for Lime Sludge Rotary Kilns to Achieve Sustainable Energy Savings Harald Merker, Refratechnik Cement GmbH
1:30pm - 3:00pm

Session 13:

 Online Analysis & Energy Recovery

  Session Chair:

Thanh Trung, Fitnir Analyzer Inc


Maximizing Recovery Boiler Availability with an Online Ash Analyzer and Ash Balance Advisor

Matti Selkala, Valmet Automations, Inc.

Reliable and Fast Method to Measure Carryover in Kraft Recovery Boilers

Heikki Lappalainen, Andritz Oy
      Feasibility Study of Using Waste Heat Recovery System for Power Generation from Flue Gases of Recovery Boiler Seyed Javad AmirFakhri, University of Wisconsin-Stevens Point
1:30pm - 3:00pm

Session 14: Lime Kiln Chemistry


Session Chair: Wei Ren, FPInnovations


How do Mud Balls Form in Lime Kilns?

John Hinton-Barber

Green Liquor Clarification Improvement Utilizing Existing Tank and Vessel in Mills

Robert Carlstrom, Valmet Paper AB   

How On-line Static Optics FTIR Can Replace Titration for Recausticizing Control - Examples From the Field

Jonathon Speed, Keit Spectrometers
3:30pm - 5:00pm

Session 18: Lime Kiln Panel Discussion (Maintenance of Coolers)


Session Co-Chairs: Glenn Hanson, Metzo Outotec and J. Peter Gorog, Houghton Cascade Holdings, LLC




Proper Kiln Alignment for Sustainable/Reliable Performance

Andrew Knouse, Metso Outotec

Comparison of Known Coolers for Lime Kilns in the Pulp and Paper Industry, The Difference in Operation Economy and Main Maintenance Tasks

Palle Hansen, Valmet

Maintenance and Operation of LMDs and Cyclones

Melissa Reddinger, Andritz
Wednesday, November 2

8:30am - 10:00am

Session 22: Black Liquor Properties & Combustion


     Session Chair: Pasi Miikulainen, Andritz


Evaluating the Effect of Recovery Boiler Operation on Dregs Behavior Using Multivariate Data Analysis

Elizabeth Maggs, University of Toronto

Development of an Online Near-Infrared Spectroscopy Analyzer for the Determination of Kraft Black Liquor Properties

Matthew Tomkins, FPInnovations

Black Liquor Properties & Combustion

 John Porter, Fitnir Analyzer, Inc.
10:30am - 12:00pm

Session 26: Impact of Chemistry on Boiler Operation


Session Chair: Jack Porter, Fitnir Analyzer Inc.


Black Liquor Spraying Orientation Determination in Kraft Recovery Boiler

Heikki Lappalainen, Andritz Oy

Evaluation of Soap Recovery Efficiency from Black Liquor

Joseph Bohannon, Ingevity

Reduction Rate Control

Travis Conner, Valmet