Integration of hybrid cycles in bio-methanol production
2010 (English)In: Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010, Åbo Akademi University Press, 2010, Vol. 2, 119-125 p.Conference paper (Refereed)
In bio-based methanol production approximately 60% of the biomass energy content is converted into methanol, the remaining part can be recovered as thermal heat. Efficient utilization of the thermal heat is difficult in stand-alone methanol plants. The overall efficiency is to a large extent dependent on the further conversion of power due to the significant quantity of excess heat. Heat can be recovered in a steam cycle but due to poor steam data energy efficiency is low. This paper therefore proposes the integration of a natural gas fired gas turbine. Simulations of the hybrid cycle in methanol production have shown good improvements. The total electrical efficiency is increased by 1.4-2.4 percentage points, depending on the fuel mix. The electrical efficiency for the natural gas used in the hybrid plant is 56-58%, which is in the same range as in large-scale combined cycle plants. A bio-methanol plant with a hybrid power cycle is therefore a competitive production route for both biomass and natural gas.
Place, publisher, year, edition, pages
Åbo Akademi University Press, 2010. Vol. 2, 119-125 p.
Bio-methanol, Biomass, Gasification, Hybrid cycles, Polygeneration
IdentifiersURN: urn:nbn:se:kth:diva-165023ScopusID: 2-s2.0-84896135345ISBN: 9781456303112OAI: oai:DiVA.org:kth-165023DiVA: diva2:806786
23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010, 14 June 2010 through 17 June 2010, Lausanne, Switzerland
QC 201504212015-04-212015-04-212015-04-21Bibliographically approved