The kraft process dominates pulp and paper production worldwide. Black liquor, a mixture of lignin and inorganic chemicals, is generated in this process as fiber is extracted from wood. At most kraft mills today, black liquor is burned in Tomlinson boilers to produce steam for on-site heat and power and to recover the inorganic chemicals for reuse in the process. Globally, the black liquor generation rate is about 85,000 MWfuel (or 0.5 million tonnes of dry solids per day), with nearly 50% of this in North America. The majority of presently-installed Tomlinson boilers will reach the end of their useful lives during the next 15 to 20 years. As a replacement for Tomlinson-based cogeneration, black liquor-gasifier/gas turbine cogeneration promises higher electrical efficiency, with prospective environmental, safety, and capital cost benefits for kraft mills. Several companies are pursuing commercialization of black liquor gasification for gas turbine applications. This paper presents results of detailed performance modeling of gasifier/gas turbine cogeneration systems using different black liquor gasifiers modeled on proposed commercial designs.
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ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
June 2–5, 1997
Orlando, Florida, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7869-9
PROCEEDINGS PAPER
Black Liquor-Gasifier/Gas Turbine Cogeneration
Stefano Consonni,
Stefano Consonni
Politecnico di Milano, Milano, Italy
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Eric D. Larson,
Eric D. Larson
Princeton University, Princeton, NJ
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Niklas Berglin
Niklas Berglin
Chalmers University of Technology, Goteborg, Sweden
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Stefano Consonni
Politecnico di Milano, Milano, Italy
Eric D. Larson
Princeton University, Princeton, NJ
Niklas Berglin
Chalmers University of Technology, Goteborg, Sweden
Paper No:
97-GT-273, V002T05A013; 9 pages
Published Online:
December 24, 2014
Citation
Consonni, S, Larson, ED, & Berglin, N. "Black Liquor-Gasifier/Gas Turbine Cogeneration." Proceedings of the ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations. Orlando, Florida, USA. June 2–5, 1997. V002T05A013. ASME. https://doi.org/10.1115/97-GT-273
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