User:Milton Beychok/Sandbox: Difference between revisions

Revision as of 18:00, 30 April 2009

Examples of Proximate and Ultimate Analyses
Class	Proximate Analyisis (wt % as received)				Ultimate Analysis (wt % moisture and ash-free)
Class	Fixed carbon	Volatile matter	Moisture	Ash	C	H	O	N	S

@@ Line 1: / Line 1: @@
 {| class = "wikitable" align="center"
-|+ Classification of Coals by Rank<ref name=Perry/><ref name=Marks/><ref name=Kreith/><sup> (a)</sup>
+|+ Examples of Proximate and Ultimate Analyses
-!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<sup> (b)</sup><br>(wt % dry mmf) ||colspan="2"|<br>Volatile Matter<sup> (b)</sup><br>(wt % dry mmf)||colspan="2"|Gross<br>Heating Value<sup> (c)</sup><br>(M[[Joule|J]]/[[Kilogram|kg]] moist mmf)
+!rowspan="2"|<br><br><br><br>Class||colspan="4"|Proximate Analyisis<br>(wt % as received)||colspan="5"| Ultimate Analysis<br>(wt % moisture and ash-free)
 |- align="center"
-!Equal or<br>greater<br>than ||<br><br>Less than||<br>Greater<br>than ||<br>Equal or<br>less than ||Equal or<br>greater<br>than ||<br><br>Less than
+!Fixed<br>carbon||Volatile<br>matter||<br>Moisture ||<br>Ash ||<br>C||<br>H||<br>O||<br>N||<br>S
-|-
-|Anthracitic<br><br><br>||Metaanthracite<sup> (d)</sup><br>Anthracite<sup> (d)</sup><br>Semianthracite<sup> (d)</sup>|| align="center"|98<br>92<br>86||align="center"|<br>98<br>92||align="center"|<br>2<br>8||align="center"|2<br>8<br>14||&nbsp;||&nbsp;
-|-
-|Bituminous<br><br><br><br><br><br>||Low-volatile bituminous<sup> (d)</sup><br>Medium-volatile bituminous<sup> (d)</sup><br>High-volatile A bituminous<br>High-volatile B bituminous<br>High-volatile C bituminous<sup> (e)</sup><br>High-volatile C bituminous<sup> (f)</sup>||align="center" |78<br>69<br><br><br><br><br> ||align="center"|86<br>78<br>69<br><br><br><br>||align="center"|14<br>22<br>31<br><br><br><br>||align="center"|22<br>31<br><br><br><br><br>||align="center"|<br><br>32.55<br>30.23<br>26.74<br>24.41||align="center"|
-<br><br><br>32.55<br>30.23<br>26.74
-|-
-|Subbituminous<br><br><br>||Subbituminous A<br>Subbituminous B<br>Subbituminous C|| &nbsp;||&nbsp;||&nbsp;||&nbsp;||align="center"|24.41<br>22.09<br>19.30||align="center" |26.74<br>24.41<br>22.09
-|-
-|Lignite<br><br>||Lignite A<br>Lignite B||&nbsp;||&nbsp;||&nbsp;||&nbsp;||align="center"|14.65<br><br>||align="center"|19.30<br>14.65
-|-
-|colspan="8"|(a) This classification does not include a few coals (referred to as unbanded coals) having unusual physical and chemical<br>properties falling within the fixed carbon and heating value ranges of the high-volatile bituminous and subbituminous ranks.<br>
-(b) Percentage by weight on a dry and mineral matter free basis (mmf).<br>
-(c) [[Gross Heating Value]] on a moist and mineral matter free basis. Moist refers to the natural inherent water contained in<br>a coal but does not include visible water (if any) on the surface of the coal. Multiply MJ/kg by 430.11 to convert to [[U.S. customary units|Btu]]/[[U.S. customary units|lb]].<br>
-(d) Coals containing 69 wt % or more fixed carbon on a dry mmf basis are ranked according to their fixed carbon content<br>regardless of their Gross Heating Value.<br>
-(e) A high-volatile C bituminous coal that may be agglomerating or non-agglomerating.<ref name=Perry's><ref name=Glossary>{{cite book|authors=Klaus K.E. Neuendorf, James P. Mehl and Julia A. Jackson|title=Glossary of Geology|edition=5th Edition|publisher=American Geological Institute|year=2005|id=ISBN 0-922152-76-4}}</ref><br>
-(f) A high-volatile C bituminous coal that is an agglomerating coal, which means that it tends to become sticky and to ''cake''<br> when heated. The agglomerating character of a coal is determined by heating a sample to 950 °C under certain conditions.<br>If the residue is coherent and supports a weight of 500g without pulverizing, the coal is classified as being agglomerating.
 |}

User:Milton Beychok/Sandbox: Difference between revisions

Revision as of 18:00, 30 April 2009

Navigation menu

Search