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Journal articles
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Open Access
Formation mechanisms of “jellyroll” smelt in kraft recovery

Formation mechanisms of “jellyroll” smelt in kraft recovery boilers, TAPPI JOURNAL October 2017

Journal articles
Magazine articles
Open Access
Lignin value prior to pulping (LVPP): An advanced pulping c

Lignin value prior to pulping (LVPP): An advanced pulping concept, TAPPI JOURNAL October 2017

Journal articles
Magazine articles
Open Access
Deinking process water flotation

Deinking process water flotation: An innovative solution to improve deinking and papermaking processes efficiency, TAPPI JOURNAL November 2017

Journal articles
Magazine articles
Open Access
Editorial: Celebrating Wayne Carr

Editorial: Celebrating Wayne Carr: A true recycling visionary, TAPPI JOURNAL November 2017

Journal articles
Magazine articles
Open Access
Improved deinking and stickies removal

Improved deinking and stickies removal, TAPPI JOURNAL November 2017

Journal articles
Magazine articles
Open Access
The Chinese ban on recovered paper imports

The Chinese ban on recovered paper imports: An international disruption, TAPPI JOURNAL November 2017

Journal articles
Magazine articles
Open Access
Editorial: Kathleen Bennett: Opportunities for paper are pro

Editorial: Kathleen Bennett: Opportunities for paper are proliferating, TAPPI JOURNAL May 2016

Magazine articles
Open Access
Leveraging mill-wide big data sets for process and quality i

Authors: Jianzhong Fu and Peter W. Hart | ABSTRACT: The MWV mill in Covington, VA, USA, experienced a long term trend of increasing episodes of paper indents that resulted in significant quantities of internal rejects and production downtime. When traditional troubleshooting techniques failed to resolve the problem, big data analysis techniques were employed to help deter-mine root causes of this negative and increasingly frequent situation. Nearly 6000 operating variables were selected for a deep dive, multi-year analysis after reviewing mill-wide process logs and 60000+ PI tags (data points) collected from one of the major data historian systems at the MWV Covington mill. Nine billion data points were collected from November 2011 to August 2014. Strategies and methods were developed to format, clean, classify, and sort the various data sets to compensate for process lag time and to align timestamps, as well as to rank potential causes or indicators. GE Intelligent Platforms software was employed to develop decision trees for root cause analysis. Insights and possible correlations that were previously invisible or ignored were obtained across the mill, from pulp-ing, bleaching, and chemical recovery to the papermaking process. Several findings led the mill to revise selected process targets and to reconsider a step change in the drying process. These changes have exhibited significant impacts on the mill’s product quality, cost, and market performance. Mill-wide communications of the identified results helped transform the findings into executable actions. Several projects were initiated.

Journal articles
Magazine articles
Open Access
Combustion behavior of kraft black liquor droplets from hot

Combustion behavior of kraft black liquor droplets from hot water pretreated hardwood and softwood chips, November 2016 TAPPI JOURNAL

Journal articles
Magazine articles
Open Access
Novel CaCO3-polymer nanocomposite fillers for the improvemen

Novel CaCO3-polymer nanocomposite fillers for the improvement of bagasse-based papers, November 2016 TAPPI JOURNAL

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