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Journal articles
Open Access
Solid-phase extraction techniques in the pulp and paper industry, TAPPI JOURNAL January 1988 88JAN137

Solid-phase extraction techniques in the pulp and paper industry, TAPPI JOURNAL January 1988

Journal articles
Open Access
Developing new methodology to determine changes to the lignin macromolecule during delignification, TAPPI JOURNAL January 1988 88JAN141

Developing new methodology to determine changes to the lignin macromolecule during delignification, TAPPI JOURNAL January 1988

Journal articles
Open Access
A systems approach to consistency control and dry stock blend, TAPPI JOURNAL July 1988

A systems approach to consistency control and dry stock blend, TAPPI JOURNAL July 1988

Journal articles
Magazine articles
Open Access
Boiler retrofit improves efficiency and increases biomass firing rates, TAPPI Journal March 2021

ABSTRACT: Domtar’s fluff pulp mill in Plymouth, NC, USA, operates two biomass/hog fuel fired boilers (HFBs). For energy consolidation and reliability improvement, Domtar wanted to decommission the No. 1 HFB and refurbish/retrofit the No. 2 HFB. The No. 2 HFB was designed to burn pulverized coal and/or biomass on a traveling grate. The steaming capacity was 500,000 lb/h from coal and 400,000 lb/h from biomass. However, it had never sustained this design biomass steaming rate. As the sole power boiler, the No. 2 HFB would need to sustain 400,000 lb/h of biomass steam during peak loads. An extensive evaluation by a combustion and boiler technologies supplier was undertaken. The evaluation involved field testing, analysis, and computational fluid dynamics (CFD) modeling, and it identified several bottle-necks and deficiencies to achieving the No. 2 HFB’s biomass steam goal. These bottlenecks included an inadequate combustion system; insufficient heat capture; excessive combustion air temperature; inadequate sweetwater con-denser (SWC) capacity; and limited induced draft fan capacity.To address the identified deficiencies, various upgrades were engineered and implemented. These upgrades included modern pneumatic fuel distributors; a modern sidewall, interlaced overfire air (OFA) system; a new, larger economizer; modified feedwater piping to increase SWC capacity; replacement of the scrubber with a dry electrostatic precipitator; and upgraded boiler controls.With the deployment of these upgrades, the No. 2 HFB achieved the targeted biomass steaming rate of 400,000 lb/h, along with lowered stack gas and combustion air temperatures. All mandated emissions limit tests at 500,000 lb/h of steam with 400,000 lb/h of biomass steam were passed, and Domtar reports a 10% reduction in fuel firing rates, which represents significant fuel savings. In addition, the mill was able to decommission the No. 1 HFB, which has substantially lowered operating and maintenance costs.

Journal articles
Open Access
Editorial: Advances in Pulp Manufacture: A review of the 2012 PEERS Conference, TAPPI JOURNAL February 2013

Editorial: Advances in Pulp Manufacture: A review of the 2012 PEERS Conference, TAPPI JOURNAL February 2013

Journal articles
Open Access
3-D Computational Simulation of Paper Handsheet Structure and Prediction of Apparent Density, TAPPI JOURNAL September 2009

3-D Computational Simulation of Paper Handsheet Structure and Prediction of Apparent Density, TAPPI JOURNAL September 2009

Journal articles
Open Access
Decreasing specific energy of thermomechanical pulps from reduction of raw materials variability, TAPPI JOURNAL September 2009

Decreasing specific energy of thermomechanical pulps from reduction of raw materials variability, TAPPI JOURNAL September 2009

Journal articles
Open Access
Retention of PCC and GCC Fillers on Chemical Pulp Fines Surfaces, TAPPI JOURNAL September 2009

Retention of PCC and GCC Fillers on Chemical Pulp Fines Surfaces, TAPPI JOURNAL September 2009

Journal articles
Open Access
Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, TAPPI JOURNAl, July 2008

Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, TAPPI JOURNAl, July 2008

Journal articles
Open Access
CFD-Based Modeling of Kraft Char Beds â?¢ Part 1: Char Bed Burning Model, TAPPI JOURNAL February 2010

CFD-Based Modeling of Kraft Char Beds • Part 1: Char Bed Burning Model, TAPPI JOURNAL February 2010

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