User:Milton Beychok/Sandbox: Difference between revisions
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imported>Milton Beychok No edit summary |
imported>Milton Beychok No edit summary |
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{| class = "wikitable" align="center" | {| class = "wikitable" align="center" | ||
|+ | |+ Classification of Coals by Rank<ref name=Perry/><ref name=Marks/><ref name=Kreith/> | ||
!rowspan="2"|<br><br><br><br><br>Class or<br>Rank||rowspan=2|<br><br><br><br><br><br>Group||colspan="2"|<br>Fixed Carbon<br>(% dry mmf)||colspan="2"|<br>Volatile Matter<br>(% dry mmf)||colspan="2"|Gross<br>Heating Value<br>(Btu/lb moist mmf) | !rowspan="2"|<br><br><br><br><br>Class or<br>Rank||rowspan=2|<br><br><br><br><br><br>Group||colspan="2"|<br>Fixed Carbon<br>(% dry mmf)||colspan="2"|<br>Volatile Matter<br>(% dry mmf)||colspan="2"|Gross<br>Heating Value<br>(Btu/lb moist mmf) | ||
|- align="center" | |- align="center" | ||
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|Subbituminous<br><br><br>||Subbituminous A<br>Subbituminous B<br>Subbituminous C|| || || || ||align="center"|10,500<br>9,500<br>8,300||align="center" |11,500<br>10,500<br>9,500 | |Subbituminous<br><br><br>||Subbituminous A<br>Subbituminous B<br>Subbituminous C|| || || || ||align="center"|10,500<br>9,500<br>8,300||align="center" |11,500<br>10,500<br>9,500 | ||
|- | |- | ||
|Lignite A<br>Lignite B | |Lignite<br><br>||Lignite A<br>Lignite B|| || || ||align="center"|6,300<br><br>||align="center"|8,300<br>6,300 | ||
|} | |} |
Revision as of 20:24, 29 April 2009
Class or Rank |
Group |
Fixed Carbon (% dry mmf) |
Volatile Matter (% dry mmf) |
Gross Heating Value (Btu/lb moist mmf) | |||
---|---|---|---|---|---|---|---|
Equal or greater than |
Less than |
Greater than |
Equal or less than |
Equal or greater than |
Less than | ||
Anthracitic |
Metanthracite Anthracite Semianthracite |
98 92 86 |
98 92 |
2 8 |
2 8 14 |
||
Bituminous |
Low-volatile bituminous Medium-volatile bituminous High-volatile A bituminous High-volatile B bituminous High-volatile C bituminous High-volatile C bituminous |
78 69 |
86 78 69 |
14 22 31 |
22 31 |
14,000 13,000 11,500 10,500 |
|
Subbituminous |
Subbituminous A Subbituminous B Subbituminous C |
10,500 9,500 8,300 |
11,500 10,500 9,500 | ||||
Lignite |
Lignite A Lignite B |
6,300 |
8,300 6,300 |