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Journal articles
Magazine articles
Open Access
Case study: Paper mill power plant optimization—balancing steam venting with mill demand, TAPPI Journal June 2020

ABSTRACT: Most Power departments are tasked with generating steam to support mill wide operations, generate electricity, and reduce operating costs. To accomplish these tasks, power boilers generate high pressure steam that is reduced to intermediate and low pressures for process utilization in the mill by means of steam turbine generator extraction or pressure reducing valves. The most economical method to reduce steam pressure is the use of steam turbine generators, as electricity is generated from the steam when it is reduced in pressure. Electricity that is produced by these generators provides a substantial financial benefit and helps offset overall operational costs. To achieve tangible financial gains, the mill must evaluate the overall cost of steam production and the price of electricity.The current work provides a case study of power plant optimization that evaluated electricity production and steam production costs balanced with mill steam demand. Process and cost optimization led to a significant reduc-tion in low pressure steam venting, resulting in reduced fuel consumption and reduced operating cost.

Journal articles
Magazine articles
Open Access
Fate of phosphorus in the recovery cycle of the kraft pulping process, TAPPI Journal March 2020

ABSTRACT: The accumulation of nonprocess elements in the recovery cycle is a common problem for kraft pulp mills trying to reduce their water closure or to utilize biofuels in their lime kiln. Nonprocess elements such as magnesium (Mg), manganese (Mn), silicon (Si), aluminum (Al), and phosphorus (P) enter the recovery cycle via wood, make-up chemicals, lime rock, biofuels, and process water. The main purge point for these elements is green liquor dregs and lime mud. If not purged, these elements can cause operational problems for the mill. Phosphorus reacts with calcium oxide (CaO) in the lime during slaking; as a result, part of the lime is unavailable for slaking reactions. The first part of this project, through laboratory work, identified rhenanite (NaCa(PO4)) as the form of P in the lime cycle and showed the negative effect of P on the availability of the lime. The second part of this project involved field studies and performing a mass balance for P at a Canadian kraft pulp mill.

Magazine articles
Open Access
English as a first and second language - part 7: a strategy for spelling, TAPPI JOURNAL, October 1998, Vol.81(10)

English as a first and second language - part 7: a strategy for spelling, TAPPI JOURNAL, October 1998, Vol.81(10)

Magazine articles
Open Access
The industry: beyond 2000, TAPPI JOURNAL, October 1998, Vol.81(10)

The industry: beyond 2000, TAPPI JOURNAL, October 1998, Vol.81(10)

Magazine articles
Open Access
Indonesian update: a country in change, an industry in recovery, TAPPI JOURNAL, September 1998, Vol. 81(9)

Indonesian update: a country in change, an industry in recovery, TAPPI JOURNAL, September 1998, Vol. 81(9)

Magazine articles
Open Access
An overview of the south african pulp and paper industry, TAPPI JOURNAL, April 1999, Vol. 82(4)

An overview of the south african pulp and paper industry, TAPPI JOURNAL, April 1999, Vol. 82(4)

Magazine articles
Open Access
Retention aids for highspeed paper machines, TAPPI JOURNAL, April 1999, Vol. 82(4)

Retention aids for highspeed paper machines, TAPPI JOURNAL, April 1999, Vol. 82(4)

Magazine articles
Open Access
A guide to developing a best management practices (bmp) plan for spent liquor, part II, TAPPI JOURNAL, December 1999, Vol. 82(12)

A guide to developing a best management practices (bmp) plan for spent liquor, part II, TAPPI JOURNAL, December 1999, Vol. 82(12)

Magazine articles
Open Access
A waste management program for paper mill sludge high in ash, TAPPI JOURNAL, April 1990, Vol. 73(4)

A waste management program for paper mill sludge high in ash, TAPPI JOURNAL, April 1990, Vol. 73(4)

Magazine articles
Open Access
Emerging pulping and chlorine-free bleaching technologies: in search of the ideal pulp mill, TAPPI JOURNAL, July 1991, Vol. 74(7)

Emerging pulping and chlorine-free bleaching technologies: in search of the ideal pulp mill, TAPPI JOURNAL, July 1991, Vol. 74(7)

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