Performance of large-scale biomass gasifiers in a biorefinery, a state-of-the-art reference
Artikel i vetenskaplig tidskrift, 2017

The Gothenburg Biomass Gasification plant (2015) is currently the largest plant in the world producing biomethane (20 MWbiomethane) from woody biomass. We present the experimental data from the first measurement campaign and evaluate the mass and energy balances of the gasification sections at the plant. Measures improving the efficiency including the use of additives (potassium and sulfur), high-temperature pre-heating of the inlet streams, improved insulation of the reactors, drying of the biomass and introduction of electricity as a heat source (power-to-gas) are investigated with simulations. The cold gas efficiency was calculated in 71.7%LHVdaf using dried biomass (8% moist). The gasifier reaches high fuel conversion, with char gasification of 54%, and the fraction of the volatiles is converted to methane of 34%mass. Because of the design, the heat losses are significant (5.2%LHVdaf), which affect the efficiency. The combination of potential improvements can increase the cold gas efficiency to 83.5%LHVdaf, which is technically feasible in a commercial plant. The experience gained from the Gothenburg Biomass Gasification plant reveals the strong potential biomass gasification at large scale.

SNG

Mass balance

Dual fluidized bed

GoBiGas

Biomass gasification

Power-to-gas

Biomethane

Författare

Alberto Alamia

Chalmers, Energi och miljö, Energiteknik

Anton Larsson

Chalmers, Energi och miljö, Energiteknik

Claes Breitholtz

Henrik Thunman

Chalmers, Energi och miljö, Energiteknik

International Journal of Energy Research

0363-907X (ISSN)

Vol. 41 2001-2019

Drivkrafter

Hållbar utveckling

Ämneskategorier

Energiteknik

Energisystem

Styrkeområden

Energi

DOI

10.1002/er.3758