Inventory audit notice: TAPPI Press orders will not be processed from August 21–28 during our fiscal year-end inventory audit. Orders placed during this time will ship starting August 31, in the order received. Normal payment processing also resumes August 31.

Thanks for your patience — this helps us serve our members better.

Search

Use the search bar or filters below to find any TAPPI product or publication.

Showing 111–120 of 123 results (Duration : 0.009 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Collections

Magazine articles
Open Access
Mönsterås going 100% TCF as it increases production and minimizes emissions, December 1995 Tappi Journal [95Dec49.pdf]

Monsteras going 100% tcf as it increases production and minimizes emissions, TAPPI JOURNAL, December 1995, Vol. 78(12)

Magazine articles
Open Access
1995 TAPPI foundation/af&pa conference: paper industry research challenges, TAPPI JOURNAL, April 1996, Vol. 79(4)

1995 TAPPI foundation/af&pa conference: paper industry research challenges, TAPPI JOURNAL, April 1996, Vol. 79(4)

Magazine articles
Open Access
Catastrophic failure of cast iron dryer roll caused by severe erosion resulting from spoiler bar failures, TAPPI JOURNAL, April 1996, Vol. 79(4)

Catastrophic failure of cast iron dryer roll caused by severe erosion resulting from spoiler bar failures, TAPPI JOURNAL, April 1996, Vol. 79(4)

Magazine articles
Open Access
A visit to mount st. helens; meta lake illustrates natural recovery following volcanic eruption, TAPPI JOURNAL, April 1994, Vol. 77(4)

A visit to mount st. helens; meta lake illustrates natural recovery following volcanic eruption, TAPPI JOURNAL, April 1994, Vol. 77(4)

Magazine articles
Open Access
Beauty or the beast: life after iso 9000, TAPPI JOURNAL, October 1994, Vol. 77(10)

Beauty or the beast: life after iso 9000, TAPPI JOURNAL, October 1994, Vol. 77(10)

Magazine articles
Open Access
Inside ctapi, TAPPI JOURNAL, May 1996, Vol. 79(5)

Inside ctapi, TAPPI JOURNAL, May 1996, Vol. 79(5)

Magazine articles
Open Access
Building a team: the cedar river project, TAPPI JOURNAL, November 1996, Vol. 79(11)

Building a team: the cedar river project, TAPPI JOURNAL, November 1996, Vol. 79(11)

Magazine articles
Open Access
Vision of the future, TAPPI JOURNAL, November 1996, Vol. 79(11)

Vision of the future, TAPPI JOURNAL, November 1996, Vol. 79(11)

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
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.

Inside this Section