Belle Ayr coal

The data shows that, for Belle Ayr coal, the initial SRC product, at Rg 11, is lower in aromatic carbon and richer in aliphatic carbon than the parent coal. With increasing severity, the situation changes at Rs of 20-25 the carbon distribution in the SRC is similar to that of the parent coal at Rg > 25, the SRC product is more aromatic and less aliphatic than the coal. This... 

For Belle Ayr coal, conversion up to 55% is independent of solvent composition. Beyond this point, conversion is responsive... 

The reaction conditions and product analyses of the hexane solubles for SCT liquefaction of Belle Ayr coal in high and low hydrogen solvents are shown in Tables 3 and 4 respectively. 

Table 3. Reaction Conditions and Product Analyses. Hydrogenated Recycle Solvent, —019 Hexane Solubles, Belle Ayr Coal...

For subbituminous coals> which are generally lower in pyrite than bituminous coals, it was impossible to achieve steady-state runs under SRC-II processing conditions without the addition of pyrite or other catalyst. For Belle Ayr coal (Wyodak-Anderson, WY), the pyritic sulfur content was 0.16% and the total oil yield was 40% at 450 C, 2250 psia H2 and one-hr residence time. 

SOLVENT EFFECTS ON SHORT TIME CONVERSION OF BELLE AYR SUBBITUMINOUS COAL (800°F, 3 min., 1500 psi H2)... 

Coals and Solvents. Wyodak (Belle Ayr) subbituminous and Monterey bituminous coals were used. Analyses are shown in Table I The coals were received as minus 1-inch lumps and were ground after cooling with liquid nitrogen. During grinding the coal temperature did not rise above ambient and the evaporation of the liquid nitrogen provided some protection from exposure to air. 

Table III shows the nominal reaction times, temperatures, and reaction severities designed to give the desired conversions with Wyodak (Belle Ayr) subbituminous coal.

Coal Burning Star (Bituminous) Belle Ayr (Subbituminous)... 

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