FITNIR to upgrade pulp mill digester control with FT-NIR analyzer

P&PC Staff
August 01, 2017
By P&PC Staff
Aug. 1, 2017 - FITNIR Analyzers has announced that a southern United States pulp mill has selected the online FT-NIR analyzer to replace its Modo-Chemetics auto-titrator for digester control.

“This mill has been a long-time customer through a service contract for its Modo-titrator,” said Tom Sands, FITNIR Analyzers president. “We are pleased to continue working with the team to help the mill achieve optimal pulp properties and production targets.”

With its current technology nearing the end of its life, the mill was looking to upgrade to a measurement technology “with minimal maintenance and excellent uptime,” according to FITNIR, adding that the mill selected FITNIR Online based on its “proven track record for requiring less maintenance and providing more repeatable and accurate measurements.”  

FITNIR Online also matched the mill’s criteria for a system with multiple applications for future consideration, as well as the ability to analyze properties beyond REA, such as total solids, dissolved lignin content and organic and inorganic solids.
 
FITNIR Online will replace the mill’s Modo-Chemetics auto-titrator measurement equipment on its continuous digester to measure key white liquor properties (EA, AA, sulfide, sulfidity, carbonate and %CE) and weak black liquor properties (residual effective alkali, lignin content, inorganic content, organic solids and total solids).

Start-up is expected to be underway this October.

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