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If, however, hydrogen is the desired end-product, the coal gas (primarily the CO product) undergoes the water gas shift reaction where more hydrogen is produced by additional reaction with water vapor: CO + H 2 O → CO 2 + H 2. Although other technologies for coal gasification currently exist, all employ, in general, the same chemical processes.
IGCC plants are advantageous in comparison to conventional coal power plants due to their high thermal efficiency, low non-carbon greenhouse gas emissions, and capability to process low grade coal. The disadvantages include higher capital and maintenance costs, and the amount of CO 2 released without pre-combustion capture.
Underground coal gasification converts coal to gas while still in the coal seam (in-situ). Gas is produced and extracted through wells drilled into the unmined coal seam. Injection wells are used to supply the oxidants (air, oxygen) and steam to ignite and fuel the underground combustion process. Separate production wells are used to bring the ...
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Using the coal gas waste as feedstock, researchers developed new processes and synthesized natural organic compounds such as Vitamin C and aspirin. The German economy relied on coal gas during the Second World War as petroleum shortages forced Nazi Germany to develop the Fischer–Tropsch synthesis to produce synthetic fuel for aircraft and tanks.
In this week's edition of The Motley Fool's energy-focused show Drilling for Value, energy analysts Joel South and Taylor Muckerman discuss several topics around natural gas with Motley Fool ...
Synthesis gas ("syngas") is obtained from biomass/coal gasification is a mixture of hydrogen and carbon monoxide. The H 2:CO ratio is adjusted using the water-gas shift reaction. Coal-based FT plants produce varying amounts of CO 2, depending upon the energy source of the gasification process. However, most coal-based plants rely on the feed ...
The coronavirus economic downturn has reduced energy demand, with uncertain prospects for the extent of its recovery. Meanwhile, rising concern about climate change and the declining cost of ...