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Journal articles
Open Access
Effect of raw-material stabilization on adhesive quality, TAPPI JOURNAL December 1989 89DEC71

Effect of raw-material stabilization on adhesive quality, TAPPI JOURNAL December 1989

Journal articles
Open Access
Nonwoven geotextiles: types and applications, TAPPI JOURNAL August 1989

Nonwoven geotextiles: types and applications, TAPPI JOURNAL August 1989

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
Viscoelastic properties of paper coatings: relationship between coating structureâ??viscoelasticity and end-use performance, TAPPI JOURNAL, May 1997, Vol. 80(5)

Viscoelastic properties of paper coatings: relationship between coating structure–viscoelasticity and end-use performance, TAPPI JOURNAL, May 1997, Vol. 80(5)

Journal articles
Open Access
Dryer section rebuild and expansions, with new concepts for lubrication purification and oil reservoir sizing, TAPPI JOURNAL, February 1997, Vol. 80(2)

Dryer section rebuild and expansions, with new concepts for lubrication purification and oil reservoir sizing, TAPPI JOURNAL, February 1997, Vol. 80(2)

Journal articles
Open Access
The use of atomic force microscopy to measure the adhesive properties of sized and unsized papers, TAPPI JOURNAL, May 1999, Vol. 82(5)

The use of atomic force microscopy to measure the adhesive properties of sized and unsized papers, TAPPI JOURNAL, May 1999, Vol. 82(5)

Magazine articles
Open Access
Technology affecting the bottom line was the focus for the tappi/isa-pupid pcE&i conference, TAPPI JOURNAL, August 1997, Vol. 80(8)

Technology affecting the bottom line was the focus for the tappi/isa-pupid pcE&i conference, TAPPI JOURNAL, August 1997, Vol. 80(8)

Journal articles
Open Access
Elemental chlorine free (ecf) and totally chlorine free (tcf) bleaching of colored broke, TAPPI JOURNAL, July 1997, Vol. 80(7)

Elemental chlorine free (ecf) and totally chlorine free (tcf) bleaching of colored broke, TAPPI JOURNAL, July 1997, Vol. 80(7)

Journal articles
Open Access
Fate of trace elements in energy recovery from recycled paper sludge, TAPPI JOURNAL, September 1997, Vol. 80(9)

Fate of trace elements in energy recovery from recycled paper sludge, TAPPI JOURNAL, September 1997, Vol. 80(9)

Journal articles
Open Access
Old giants rearm in northern India, TAPPI JOURNAL, August 1997, Vol. 80(8)

Old giants rearm in northern india, TAPPI JOURNAL, August 1997, Vol. 80(8)

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