Biomass hydrogasification

Hydrogasification -ofbiomass [FUELS FROM BIOMASS] (Vol 12) -of coal [FUELS, SYNTHETIC - GASEOUS FUELS] (Vol 12) -of oil shale [OIL SHALE] (Vol 17)... 

Several routes for chemical storage of hydrogen have been studied [1], from which SNG production by biomass hydrogasification has been identified as the option with the hipest energetic efficiency. 

The process of SNG production by biomass hydrogasification has to be developed practically. 

A simplified flowsheet for SNG production by biomass hydrogasification is shown in Figure 2. 

Hydrogen and pre-treated biomass are fed to the hydrogasification reactor. The produced gas passes a high-temperature gas clean-up section for removal of contaminants, followed by a final methanation step for the conversion of residual CO. Removal of H2O from the product gas of the methanation step, results in SNG as the final product. 

As part of the technical assessment of the biomass hydrogasification concept, an experimental programme was defined in 1999 and performed at Deutsche Montan Technologic (DMT), Germany. 

In suminary, the experimental programme has shown the feasibility of biomass hydrogasification as the most important step within the total process of SNG... 

ECN has defined an RD D programme for SNG production by biomass hydrogasification process, with the objective to prepare a future demonstration in The Netherlands. The first phase of this programme comprises an assessment of technical and economic prospects of the concept. 

For final evaluation of the biomass hydrogasification concept (proof of principle), it is important to integrate the experimental results, within the developed ASPEN model. 

D.S. Scott Hydrogasification of biomass to produce high yields of methane. U.S. patent 4,822,935, April 1989. 

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