Search

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

Showing 31–40 of 3,917 results (Duration : 0.013 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Event Type

Collections

Journal articles
Open Access
The selection and maintenance of valves for the control of fugitive emissions, TAPPI JOURNAL, August 1994, Vol. 77(8)

The selection and maintenance of valves for the control of fugitive emissions, TAPPI JOURNAL, August 1994, Vol. 77(8)

Journal articles
Open Access
Accurate determination of six common fillers in fine papers, newsprint, and recycled stock by x-ray fluorescence spectrometry, TAPPI JOURNAL, April 1995, Vol. 78(4)

Accurate determination of six common fillers in fine papers, newsprint, and recycled stock by x-ray fluorescence spectrometry, TAPPI JOURNAL, April 1995, Vol. 78(4)

Journal articles
Open Access
Modified kraft hardwood pulp yields high brightness and high strength, TAPPI JOURNAL, August 1994, Vol. 77(8)

Modified kraft hardwood pulp yields high brightness and high strength, TAPPI JOURNAL, August 1994, Vol. 77(8)

Journal articles
Open Access
Photoyellowing of mechanical pulps - part 2: activation spectra for light-induced yellowing of newsprint paper by polychromatic radiation, TAPPI JOURNAL, May 1995, Vol. 78(5)

Photoyellowing of mechanical pulps - part 2: activation spectra for light-induced yellowing of newsprint paper by polychromatic radiation, TAPPI JOURNAL, May 1995, Vol. 78(5)

Journal articles
Open Access
Surface characterization of non-chlorine-bleached pulp fibers and calcium carbonate Coatings using inverse gas chromatography, TAPPI JOURNAL, May 1995, Vol. 78(5)

Surface characterization of non-chlorine-bleached pulp fibers and calcium carbonate Coatings using inverse gas chromatography, TAPPI JOURNAL, May 1995, Vol. 78(5)

Journal articles
Open Access
Fiber fractionation as a method of improving handsheet properties after repeated recycling, TAPPI JOURNAL, May 1995, Vol. 78(5)

Fiber fractionation as a method of improving handsheet properties after repeated recycling, TAPPI JOURNAL, May 1995, Vol. 78(5)

Journal articles
Open Access
Conference review: Recycling sessions at TAPPI PEERS, TAPPI JOURNAL February 2012

Conference review: Recycling sessions at TAPPI PEERS, TAPPI JOURNAL February 2012

Magazine articles
Open Access
1994 polymers, laminations and coatings conference highlights technology basics, TAPPI JOURNAL, December 1994, Vol. 77(12)

1994 polymers, laminations and coatings conference highlights technology basics, TAPPI JOURNAL, December 1994, Vol. 77(12)

Journal articles
Magazine articles
Open Access
Recovery boiler back-end heat recovery, TAPPI Journal March 2023

ABSTRACT: Sustainability and efficient use of resources are becoming increasingly important aspects in the operation of all industries. Recently, some biomass-fired boilers have been equipped with increasingly complex condensing back-end heat recovery solutions, sometimes also using heat pumps to upgrade the low-grade heat. In kraft recovery boilers, however, scrubbers are still mainly for gas cleaning, with only simple heat recovery solutions. In this paper, we use process simulation software to study the potential to improve the power generation and energy efficiency by applying condensing back-end heat recovery on a recovery boiler. Different configurations are considered, including heat pumps. Potential streams to serve as heat sinks are considered and evaluated. Lowering the recovery boiler flue gas temperature to approximately 65°C significantly decreases the flue gas losses. The heat can be recovered as hot water, which is used to partially replace low-pressure (LP) steam, making more steam available for the condensing steam turbine portion for increased power generation. The results indicate that in a simple condensing plant, some 1%•4% additional electricity could be generated. In a Nordic mill that provides district heating, even more additional electricity generation, up to 6%, could be achieved. Provided the availability of sufficient low-temperature heat sinks to use the recovered heat, as well as sufficient condensing turbine swallowing capacity to utilize the LP steam, the use of scrubbing and possibly upgrading the heat using heat pumps appears potentially useful.

Journal articles
Open Access
Effects of impregnation time on hardwood kraft pulp characteristics and papermaking potential â?¢ a mill study, TAPPI JOURNAL April 2010

Effects of impregnation time on hardwood kraft pulp characteristics and papermaking potential • a mill study, TAPPI JOURNAL April 2010

Inside this Section