Search

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

Showing 11–20 of 3,917 results (Duration : 0.012 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Event Type

Collections

Journal articles
Open Access
Key aspects of capital effectiveness, TAPPI JOURNAL, October 1997, Vol. 80(10)

Key aspects of capital effectiveness, TAPPI JOURNAL, October 1997, Vol. 80(10)

Journal articles
Open Access
Effects of softwood morphology and chip thickness on pulping with a displacement kraft batch process, TAPPI JOURNAL, July 1998, Vol. 81(7)

Effects of softwood morphology and chip thickness on pulping with a displacement kraft batch process, TAPPI JOURNAL, July 1998, Vol. 81(7)

Journal articles
Open Access
Biofiltration of a-pinene and its application to the treatment of pulp and paper air emissions, TAPPI JOURNAL, August 1998, Vol. 81(8)

Biofiltration of a-pinene and its application to the treatment of pulp and paper air emissions, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
The evolution of maintenance management and engineering in the pulp and paper industry over the past fifty years, TAPPI JOURNAL, February 1996, Vol. 79(2)

The evolution of maintenance management and engineering in the pulp and paper industry over the past fifty years, TAPPI JOURNAL, February 1996, Vol. 79(2)

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
Magazine articles
Open Access
Ultrastructural Behavior of Cell Wall Polysaxxharides, TAPPI Journal April 2022

ABSTRACT: Considerable information on the ultrastructural organization of the plant cell wall and the supermolecular arragement of the cell wall components, in particular of cellulose, has been obtained with the electron microscope.

Journal articles
Open Access
Arundo donax l. reed: new perspectives for pulping and bleaching 1. raw material characterisation, TAPPI JOURNAL, January 2001, Vol. 84(1)

Arundo donax l. reed: new perspectives for pulping and bleaching 1. raw material characterisation, TAPPI JOURNAL, January 2001, Vol. 84(1)

Journal articles
Open Access
Comparative papermaking properties of oil-palm empty fruit bunch, TAPPI JOURNAL, January 2001, Vol. 84(1)

Comparative papermaking properties of oil-palm empty fruit bunch, TAPPI JOURNAL, January 2001, Vol. 84(1)

Journal articles
Open Access
Recycling old telephone directories, TAPPI JOURNAL, January 2001, Vol. 84(1)

Recycling old telephone directories, TAPPI JOURNAL, January 2001, Vol. 84(1)

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)

Inside this Section