![Soviet-bloc Underground Coal Gasification Results Using Enriched Air and Steam. [Gorlovskaya, Lisichausk, Podmoskovnaya, Mars Mine-Logizsa Field Scale Experiments]. PDF](https://books.google.com/books/content/images/frontcover/MoXBwQEACAAJ?fife=w80-h100)
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Languages : en
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Russian and Polish steam-oxygen and steam-enriched-air gasification experiments are analyzed. These experiments were operated for a month or more, consumed up to 20,000 tons of coal, and apparently were conducted with no insurmountable problems. Almost twice as much oxygen per unit weight of coal was required than is used for Lurgi steam-oxygen gasification. The results suggest that a medium-Btu gas suitable for upgrading to pipeline quality gas or for the production of methanol, ammonia, or other chemicals can be obtained from underground coal gasification, particularly if steam-oxygen rather than enriched air and steam is used. The following gas quality was obtained (on a nitrogen-free basis): CH4, 2-6 percent; H2, 37-42 percent; CO, 18-27 percent; CO2, 25-34 percent. The higher heating value of the gas was 220 to 270 Btu/scf. Equilibrium reaction temperatures near 900 K (1160°F) were calculated from the product-gas analyses. These low temperatures together with the high consumption of oxygen, suggest some bypassing of oxidants and secondary oxidation of product gases, in addition to some fairly substantial heat losses underground.
Author: United States. Energy Research and Development Administration
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Author: John P. Capp
Author: James Lowry Elder
Author: J. P. Capp
Author: National Coal Board. The underground gasification of coal
Author: Sandia Laboratories