Wyodak H-coal

The important properties of these syncrudes include the hydrogen content, boiling range, and impurities. Apparently, the type of coal greatly influences these properties. The Wyodak H-Coal syncrude is richer in hydrogen and contains fewer heteroatoms than the Illinois H-Coal syncrude. In contrast, the SRC-II syncrude contains the least hydrogen and the most... 

PROPERTIES OP WYODAK H-COAL, ILLINOIS H-COAL, AND SRC-II SYNCRUDES... 

The Illinois H-Coal and SRC-II syncrudes contain large amounts of chloride, 32 parts per million (ppm) and 50 ppm, respectively. The Wyodak H-Coal syncrude contains only 3 ppm. Because the exit line from the pilot plants which processed the SRC-II syncrude occasionally plugged with ammonium chloride, we water washed the Illinois H-Coal syncrude prior to hydrotreating. It is our understanding that chloride will be removed by water washing at a commercial coal liquefaction facility. 

Figure 1. True boiling point distillations for Illinois H-coal, Wyodak H-coal, and SRC-II syncrudes...

Yield periods for these three syncrudes, refined to specification jet fuel, are shown in Table III. Accurate yields of the very small 600° F- " portion were not determined for these periods. The yields in Table III show this cut combined with the jet cut. The yield of the 600° F- " cut is approximately 5 vol % for the Illinois H-coal syncrude and 2.5 vol % for the Wyodak H-Coal and SRC-II syncrudes. Properties of the jet fuels are shown in Table IV. 

COMPARISON OP SEVERELY HYDROTREATED PRODUCTS FROM ILLINOIS H-COAL, WYODAK H-COAL,... 

Illinois H-Coal Syncrude Wyodak H-Coal Syncrude SRC-II Syncrude ... 

All Climates Typical Climates Cold Climates Illinois H-Coal Wyodak H-Coal SRC-II... 

Diesel fuel and heating fuels should pass both oxidation and thermal stability tests. As shown in Table XII, the raw Wyodak H-Coal syncrude has a very poor oxidation stability but the hydrotreated Wyodak H-Coal syncrude has an excellent oxidation stability. The oxidation stability of hydrotreated Illinois H-Coal products is also excellent, even without additives. 

Figure 1. Simulated true boiling point distillations for SRC-II, Illinois H-coal, and Wyodak H-coal whole process products...

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