Hydrogen via Biomass Gasification

Table 7.19. Input and output data for the production of hydrogen via biomass gasification...

A group of stakeholders from industry propose to produce pure hydrogen via biomass gasification and to distribute it for use in stationary fuel cells for combined heat and electricity generation. Two cases have been considered co-generation of heat and electricity, and electricity generation only. 

E-26 Midsize Hydrogen via Biomass Gasification Technology Plus C02 Capture with Future Optimism, 168... 

Midsize Hydrogen via Biomass Gasification with Future Optimism... 

Koroneos C, Dompros A, Roumbas G (2008) Hydrogen production via biomass gasification—a life cycle assessment approach. Chem Eng Process 47 1261-1268... 

The same holds true for hydrogen however, biomass yields more kilometres when used via hydrogen in fuel-cell cars than liquid biofuels in ICE cars (see Fig. 7.5). Moreover, as hydrogen is produced via gasification, it is equivalent to second-generation biofuels, as it can use feedstock that does not interfere with the food chain. 

Another promising route for hydrogen production via biomass is gasification. Biomass gasification is done in the presence of oxygen and steam. The conversion process can be represented as... 

Midsize Hydrogen via Current Biomass Gasification Technology... 

Oxide catalysts are known to be effective for oxidation reactions. In this study, we wanted to produce carbon monoxide through partial oxidation of the biomass, as this could be expected to lead to a conversion of carbon monoxide into hydrogen via the water-gas shift reaction. An oxidization of the tarry product is also expected. By these two effects, improvement of the efficiency of the gasification is expected. Oxide catalyst is expected to enhance the oxidation reaction needed for this scenario. Since oxide catalyst is considerably cheaper than nickel catalyst, its use would make the whole gasification process more economical. Hence, we decided to examine the effect of oxide catalysts on gasification with partial oxidation using cellulose as a model compound. 

Hannula, 1., 2009. Hydrogen Production via Thermal Gasification of Biomass in Near-to-me-dium Term. VTT. 

Steam also is blended with air in some gasification units to promote the overall process via the endothermic steam—carbon reaction to form carbon monoxide and hydrogen. This was common practice at the turn of the nineteenth century, when so-called producer gasifiers were employed to manufacture LHV gas from different types of biomass and wastes. The producer gas from biomass and wastes had heating values around 5.9 MJ /mr at... 

Production of pure hydrogen from solid biomass via gasification total efficiency about 50 to 60% ... 

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