Abstract
Reforming is a key enabling technology for the production
of tar and hydrocarbon free synthesis gas from biomass.
In this work, two different reforming concepts, steam and
autothermal reforming, were studied for cleaning of
biomass-derived gasification gas. Long-term laboratory
scale experiments (around 500 h) were carried out with
two model biomass gasification gas compositions with low
and medium hydrocarbon loads. The experiments were made
using nickel and precious metal catalysts at atmospheric
pressure and at temperatures around 900-950°C. The
deactivation of the catalysts was followed. Gas with low
hydrocarbon content could be steam reformed with nickel
and precious metal catalyst. Both autothermal and steam
reforming modes were studied for gas with medium
hydrocarbon content. In steam reforming mode, the
catalysts deactivated more than in autothermal mode.
Based on the experiments H2O/CREF molar ratio above 4 and
O/CREF molar ratio above 8 are recommended. A concept
assessment was carried out to examine plant level impacts
of the reforming approaches to synthesis gas production.
The results showed that the choice of reforming concept
has only limited impact to the overall efficiency of
synthetic biofuel production.
| Original language | English |
|---|---|
| Pages (from-to) | 208-220 |
| Journal | Fuel |
| Volume | 147 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- biomass
- gasification
- steam
- autothermal reforming
- performance analysis
- biofuels
