Coal, clean hydrogen from

Clean Hydrogen from Coal with C02 Capture and Sequestration... 

Collot A.-G., Prospects for Hydrogen from Coal, IEA Clean Coal Center, London, 2004. 

Clean hydrogen for refining heavy crude oils and optimising the production of synthetic fuels from hydrocarbon feedstock (coal, biomass...). 

Perspectives of carbon taxes will be among the prime incentives for hydrogen and heat using industries to participate in public/private partnerships created to build prototypes and demonstrate clean hydrogen production technologies. Oil companies, petrochemical and steel industries are among the most exposed to additional costs imposed by carbon taxes to their current activities, as well as to future activities such as the production of synthetic fuels from coal, biomass or other hydrocarbon feedstock. 

Presumably the hydrogen entering a reactor or charged into an autoclave could be relatively clean and dry, represented by a point in the lower lefthand comer of the reactor zone (or if accompanied by steam, somewhere on the left side of the square). As the reaction proceeded, the reactor gas would become relatively wet (from the balance of the coal reactions or from water in the coal) and loaded with H2S as the H2 was consumed, and would be represented by points near the upper righthand comer of the reactor zone. The area of the reactor zone would stay the same (6x6 log units) but the position of the reactor zone will shift with temperature since the two equilibrium constants are functions of temperature. Note that at 527°C (Figure 3), the reactor zone is almost entirely in the pyrrhotite FellS12 zone Note that at 427°C (Figure 4) the reactor zone is... 

The key to the efficient and clean manufacture of hydrogen from coal is to gasify the coal first, to produce a synthesis gas—a mixture of hydrogen and CO—and then to further process the CO with water to produce additional hydrogen and C02. 

DOE-FE. Hydrogen from Coal Program—Research, Development, and Demonstration Plan, 2004-2005. http //www.netl.doe.gov/technologies/hydrogen clean fuels/refshelf/pubs/hold/MYRDDP. pdf (accessed August 30, 2009). 

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