ISCI 1001 Lecture Notes - Lecture 23: Bituminous Coal, Anthracite, Substitute Natural Gas
30 Nov 2015
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Bituminous (lower energy content, used in steel & electricity production) Lignite -> lowest e content (electricity production) All 4 boxes -> resources: sub-economic, economic, undiscovered, discovered. Total world primary e consumption: 2005: 461. 428 quad (486 ej) Quad -> quadrillion btu: 2008: 492. 587. Canada primary e consumption: 2005: 14. 164 quad (14. 9 ej, 2008: 14. 029 quad. Cal -> energy to heat 1g of water 1 c. Btu -> energy to heat 1 pound of water 1 f. > 28 mj/kg: coal dust/dry lignite, solid -> cake -> heat bituminous coal to ~ 1000 c in absence of air. Waste -> pressed into briquettes (use for fuel) Gas coal gasification: t (600-1400 c, pressure, amount of o2. Syngas synthetic gas: mix of co + h2, small amounts of other gases, composition depends on reaction conditions. Can be used to make nearly all the products presently made by the petroleum industry: synthetic natural gas, h2 used in fuel cells.
