Hydrogen production gasification

Hydrogen production by combining coal gasification with CCR process. 

Several new concepts under development for hydrogen production from coal were also described. The HyPr-RING method combines coal gasification, C02 separation, and water-gas shift reaction in a gasifier to produce hydrogen. 

Shiying L., Michiaki H., Yoshizo S. and Hiroyuki H., Hydrogen Production from Coal by Separating Carbon Dioxide during Gasification, Fuel, 81, 2079-2085, 2002. 

Iyer M.V., Gupta FT, Sakadjian B.B. and Fan, L.-S., High Temperature C02 Capture and Hydrogen Production Using Calcium Oxide Process Development and Economics for Combustion and Gasification Systems, The 2005 Clearwater Coal Conference, Apr. 17-21, Clearwater, FL, 2005. 

Some Economic Prospects of Gasification-Based Hydrogen Production..209... 

Demirbas, A., Hydrogen production from biomass by the gasification process. Energy Sources 2002, 24, 59. 

Aznar, M. P. Caballero, M. A. Corella, J. Molina, G. Toledo, J. M., Hydrogen production by biomass gasification with steam-02 mixtures followed by a catalytic steam reformer and a CO-Shift system. Energy and Fuels 2006, 20, 1305-1309. 

ALSTOM s hybrid combustion-gasification process for hydrogen production. 

Lin, S. et al, Process analysis for hydrogen production by reaction integrated novel gasification (HyPr-RING), Energ. Corners. Manag., 46, 869,2005. 

Direct production of hydrogen from gasification is the simplest route. Gasification is a two-step process in which the solid feedstock is thermochemically converted to a low- or medium-energy-content gas. Natural gas contains 35 MJ/Nm3. Air-blown biomass gasification results in approximately 5 MJ/m3 oxygen-blown in 15 MJ/m3. 

Rogers, R. Ill (1994). Hydrogen Production by Gasification of Municipal Solid Waste. Lawrence Livermore National Laboratory (UCRL-ID-117603). 

The (additional) costs of C02 capture in connection with hydrogen production from natural gas or coal are mainly the costs for C02 drying and compression, as the hydrogen production process necessitates a separation of C02 and hydrogen anyway (even if the C02 is not captured). Total investments increase by about 5%-10% for coal gasification plants and 20%-35% for large steam-methane reformers (see also Chapter 10). 

For the first decades, all roadmaps show a focus on fossil-based hydrogen production options, mainly onsite and decentral steam methane reformers (SMR), electro-lysers and hydrogen as a by-product from the chemical industry. In some regions, hydrogen is also produced to a certain extend by nuclear, electrolysis, biomass and waste gasification. Later on, with a significant increase of hydrogen, the production... 

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