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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.
The gasification technology utilized at Wabash River IGCC was developed originally by Dow Chemical, and was subsequently transferred to Destec, a partially held subsidiary of Dow Chemical. The technology was later acquired by ConocoPhillips. CB&I currently licenses this process technology under the name E-GAS™. [7]
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 ...
An integrated gasification combined cycle (IGCC) is a technology using a high pressure gasifier to turn coal and other carbon based fuels into pressurized gas—synthesis gas . It can then remove impurities from the syngas prior to the electricity generation cycle.
Coal liquefactions originally was developed at the beginning of the 20th century. [2] The best-known CTL process is Fischer–Tropsch synthesis (FT), named after the inventors Franz Fischer and Hans Tropsch from the Kaiser Wilhelm Institute in the 1920s. [3] The FT synthesis is the basis for indirect coal liquefaction (ICL) technology.
The International Energy Agency says the share of coal, oil, and natural gas in global energy supply, stuck for decades around 80%, will start to edge downward and reach 73% by 2030.
The Fischer–Tropsch process is an important reaction in both coal liquefaction and gas to liquids technology for producing liquid hydrocarbons. [1] In the usual implementation, carbon monoxide and hydrogen, the feedstocks for FT, are produced from coal, natural gas, or biomass in a process known as gasification.
A Wyoming coal mine that supplies fuel to a power plant that will be converted to burn gas plans to lay off 19 workers next month, the latest of thousands of jobs lost in the beleaguered U.S. coal ...