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Journal articles
Optimization of energy efficiency and condensate production in evaporation plants for a modern softwood pulp mill, TAPPI Journal April 2026
ABSTRACT: To meet the need to further improve thermal efficiency and environmental performance of kraft pulp mills, new systems and techniques have been developed within the evaporation plant. This paper describes these novel approaches and how they were implemented in a project completed in 2018 for a new evaporator and condensate treatment system supplied by Valmet at the SCA Östrand market pulp mill in Sweden. This project was part of a stepwise upgrade of the complete mill to increase the production capacity of the mill from 430,000 to 900,000 air-dried metric tons/year (ADt/y). As part of this upgrade, the mill had the objectives to increase the energy efficiency of the pulp mill and to minimize the air emissions as much as possible, the effluent volume, and the water usage in the mill. The mill also wanted to have the disposal of the biosludge in the black liquor, and the production of tall oil from black liquor soap, liquid methanol, and turpentine. This required that the new evaporation and condensate treatment system be very closely integrated into the other process departments of the mill, including integration of the hot weak black liquor flash vapor from the digester directly into the evaporator train and the production of multiple streams of clean evaporation plant condensate at the correct temperature for the bleach plant. Heat and mass balance calculation values, which were found to do very well in predicting the effect on actual mill operation, are also presented in this paper.
Journal articles
Recent Advances in the Application of Acoustic Leak Detectio
Recent Advances in the Application of Acoustic Leak Detection to Process Recovery Boilers, 1995 Engineering Conference Proceedings
Journal articles
Black Liquor Recovery by Pressurized, Oxygen-Blown Gasificat
Black Liquor Recovery by Pressurized, Oxygen-Blown Gasification, 1996 Engineering Conference Proceedings
Journal articles
Qualification of Welding Procedures for Duplex Stainless Ste
Qualification of Welding Procedures for Duplex Stainless Steels, 1999 Engineering Conference Proceedings
Journal articles
Electrochemical Removal of Color and Toxicity from Bleached
Electrochemical Removal of Color and Toxicity from Bleached Kraft Effluents, 1994 Environmental Conference Proceedings
Journal articles
Abitibi consolidated's mill in snowflake, az, converts to 100% recycling, TAPPI JOURNAL, April 2000, Vol. 83(4)
Abitibi consolidated's mill in snowflake, az, converts to 100% recycling, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
A six-year review of the TAPPI research funding program, TAPPI JOURNAL, April 2000, Vol. 83(4)
A six-year review of the TAPPI research funding program, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Performance evaluation of two simple causticizing control systems, TAPPI JOURNAL, April 2000, Vol. 83(4)
Performance evaluation of two simple causticizing control systems, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Dynamic behavior of a pulp processing and reject refining plant, TAPPI JOURNAL, April 2000, Vol. 83(4)
Dynamic behavior of a pulp processing and reject refining plant, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Chip size distribution for an ultra-high-yield sulfite process, TAPPI JOURNAL, April 2000, Vol. 83(4)
Chip size distribution for an ultra-high-yield sulfite process, TAPPI JOURNAL, April 2000, Vol. 83(4)