PCS-686
Reactivity of Argonne coals in the presence of cyclic olefins and other donors
Bedell, M.W.; Curtis, C.W.; Hool, J.L.
Fuel Processing Technol.
1994
37 (1)
1-18
The reactivity of eight coals from the Argonne Premium Sample Bank ranging in rank
from lignite to low volatile bituminous coal was evaluated in the presence and absence of
hydrogen donors. The effect of highly reactive cyclic olefins, isotetralin and
hexahydroanthracene (HHA), on coal conversion to tetrahydrofuran soluble material was
compared to that of more conventional hydroaromatic donors - tetralin (TET),
dihydroanthracene (DHA), and octahydroanthracene (OHA). The Argonne coals were
ranked according to their reactivity in an inert solvent, hexadecane, and in Maya resid.
These rankings, based on averages, agreed with those calculated by a computed
signal-to-noise ratio which measures simultaneously average and variability of coal
conversion. The high volatile bituminous coals, Illinois No. 6, Western Kentucky No. 9,
Pittsburgh No. 8, and Blind Canyon, were the most reactive. The three-ring hydrogen
donors, DHA and HHA, were the most effective for transferring hydrogen to coal, whereas
OHA and TET were the least effective. The reaction products obtained from each of the
hydrogen donors were different and specific to each reaction. The reactivity of the coal,
the ease and effectiveness of hydrogen donation from the donor, and, to a lesser degree,
the solvent medium present affected the extent of reaction occurring for each coal
system. 11 refs., 9 tabs.
1. Upper Freeport,PA (UF)
2. Wyodak-Anderson, WY (WY)
3. Illinois #6 (IL)
4. Pittsburgh #8 (PIT)
5. Pocahontas #3 (POC)
6. Blind Canyon,UT (UT)
7. Lewiston-Stockton, WV (WV)
8. Beulah-Zap, ND (ND)