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Integration study for alternative methanation technologies for the production of synthetic natural gas from gasified biomass

Stefan Heyne (Institutionen för energi och miljö, Värmeteknik och maskinlära) ; Martin Seemann (Institutionen för energi och miljö, Energiteknik) ; Simon Harvey (Institutionen för energi och miljö, Värmeteknik och maskinlära)
19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7; Prague; Czech Republic; 28 August 2010 through 1 September 2010 (1974-9791). Vol. 21 (2010), p. 409-414.
[Konferensbidrag, refereegranskat]

This paper analyzes the integration of two different methanation technologies – fixed bed adiabatic and fluidised bed isothermal - in a SNG production process and the consequences for the overall process energy conversion performance. The different operating conditions of the two methanation technologies lead to a change in temperature levels and quantities of recoverable heat, respectively, but also to differences in the overall processes’ power consumption. Using pinch methodology for optimal internal heat recovery in combination with flowsheeting software (ASPEN Plus), the two methanation alternatives are fitted into the SNG production process. The potential power production from recovered process heat is analysed based on the Carnot efficiency and compared to the overall power consumption within the SNG process. Both methanation alternatives perform equally within the given boundary conditions, resulting in an output of SNG of 63.3 MWLHV per 100 MWLHV dry fuel input and a ratio of about 1.22 between theoretical power production and overall power consumption.

Nyckelord: SNG, methanation, process integration, process modelling



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Denna post skapades 2010-09-09. Senast ändrad 2016-05-18.
CPL Pubid: 125903

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Värmeteknik och maskinlära (2005-2014)
Institutionen för energi och miljö, Energiteknik (2005-2017)

Ämnesområden

Energi
Hållbar utveckling
Kemiska processer

Chalmers infrastruktur

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Denna publikation ingår i:


Bio-SNG from Thermal Gasification - Process Synthesis, Integration and Performance