2011+solid+Fuels

2011+solid+Fuels - Solid Fuels 1 Flame design Burners are...

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1 Solid Fuels
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2 Flame design Burners are designed to be premixed. Resulting flame fills the large combustion cavity, maximizing radiant heat transfer
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3 Fuels Fossil fuels – coal – liquid – gas Renewables – wood – wood scrap (Georgia Pacific) – vegetables
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4 Coal
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5 Coal Solid fossil fuel comes from plants and trees metamorphic rock Anthracite - Best coal, found in PA,usually deep, high luster Etymology: Greek, anthrax coal {cannot figure out connection} very hard, also called “hard coal” up to 98% free carbon (a low of 86%) remaining stuff is ash and methane
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6 Coal (cont.) Bituminous – softer – large reserves – from 46-86% free carbon – remainder is more complex than anthracite – heating values of 11,000 to 14,000 Btu/lbm subbituminous – heating values from 8300-11000 Btu/lbm
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7 Coal (cont.) Lignite – comes from the word wood, often remnants of wood fiber visible – 6300-8300 Btu/lbm Peat – Decomposed vegetable matter – Used in Europe and England
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8 Makeup of coal Fixed carbon Volatile matter – portion of coal (other than H 2 0) which is driven off when temp of coal is raised to 1750 °F in the absence of O 2 Moisture Ash – non-combustible stuff in coal. Primarily inorganic salts Sulfur
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9
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10 Powder River Basin Coal Northeast Wyoming's Powder River Basin is the largest coal-producing region in the United States, comprising – Thick seams of low-sulfur coal – overlain by minimal overburden. – Low heating value but high methane content
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11 Powder River Basin Coal (cont.)
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12 Very Big Toys
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13 The dragline working in this pit is a Marion 8750 with a 130 cubic yard bucket and a 335 foot boom called Raisin Thunder.
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14 This topographic map shows the working pit of the Black Thunder mine (on right) and the Jacobs Mine (on left).
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15
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16 PRB Mines – what is there a metric ton is 1000 kg (2205 pounds), a long ton is 2240 pounds, a short ton 2000
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America's estimated recoverable reserves of coal stand at 275 billion tons, an amount that is greater than any other nation in the world. Are capable of meeting domestic demand
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This note was uploaded on 01/17/2012 for the course ME 462 taught by Professor Muller during the Fall '11 term at Rutgers.

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2011+solid+Fuels - Solid Fuels 1 Flame design Burners are...

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