Recausticizer

Proven FT-NIR application for recausticizer optimization

Recausticizer_Icon

Recausticizer

Recaust Challenges
Online measurements of Kraft pulping liquors have historically been a hurdle for the pulp processing industry. Traditional measurement techniques (i.e., conductivity, density, temperature and differential pressure) have only had moderate success due to scaling and fouling of their probes. Moreover, these devices lack chemical specificity. Until recently, the industry has accepted laboratory titrations as its choice method for complete liquor composition analysis.

FITNIR Solution
Today, FITNIR Analyzers provides reliable, accurate and true measurements for the broadest set of liquor properties. With the ability to provide simultaneous measurements of multiple chemical properties, minimal sample preparation, and no plugging or fouling, FT-NIR is quickly becoming the technology of choice for superior causticizing efficiency.

Properties Measured

FITNIR’s Recausticizer analyzer application measures White Liquor ABCs:

  • Effective Alkali (EA)
  • Active Alkali (AA)
  • Sodium Carbonate (Na2CO3)
  • Sodium Sulfide (Na2S)
  • Causticizing Efficiency (CE)

  • Sodium Sulfate (Na2SO4)
  • Sodium Thiosulfate (Na2S2O3)
  • Solids Content*
  • Polysulphides: Active, Inactive, Total, Residual Sulfide

*FITNIR Online measurement only

Recaust-Analyzer-Sample-Point

^ Click on Diagram to Enlarge

Key Benefits

  • $0.6 – 1.2M savings/year
  • 6 – 12 months ROI
  • Decreased risk of overliming
  • Reduced TTA and EA variability

  • Increased causticizing efficiency (CE) at target TTA
  • Reduced deadload content (carbonate)
  • Fewer lab tests required

Project Highlights

Clearwater Paper, Lewiston Mill

Lewiston, ID

FITNIR Online
(2016)

Paper Excellence, Skookumchuck Pulp Inc.

Skookumchuck, BC, Canada

FITNIR Online
(2010, 2014)

Domtar Corporation, Kamloops Mill

Kamloops, BC, Canada

FITNIR Online
(2013)

Mill in US

US

FITNIR Online
(2013)

Weyerhaeuser, Grande Prairie Mill

Grande Prairie, AB, Canada

FITNIR Benchtop
(2012, 2013)

Domtar Inc., Espanola Mill

Espanola, ON, Canada

FITNIR Online
(2012)

Mill in Northern British Columbia, Canada

Northern BC, Canada

FITNIR Online
(2012)

Mill in Southern US

Southern US

FITNIR Online
(2001, upgraded in 2012)

Alberta-Pacific Forest Industries Inc.

Athabasca,
AB, Canada

FITNIR Online
(2009)

Mill in Eastern Canada

Eastern Canada

FITNIR Online
(2007, 2009)

Get in Touch

Contact FITNIR Analyzers Inc. and we can work together to optimize your recausticizer operations.

 

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