Sequential low-temperature depolymerization and liquefaction of US coals
The Elkhorn (Kentucky) coal sample, referred below as EH(KY) coal, had the following ultimate analysis (MAF basis), in wt %: C, 85--36; H, 5.69; N, 1.75; Cl, 0.18; S, 0.72; 0 (diff) 6.30. H/C atomic ratio - 0.80; ash content (dry basis), 6.60 %. The sample showed a calorific value of 14,324 BTU/ib (dry basis). As indicated by its ultimate analysis and calorific value, the EH(Ky) coal was of somewhat higher rank as compared with the previously studied HVB coal sample from Burning Star (Illinois no. 6). The EH (Ky) coal was subjected to the previously developed stepwise depolyermization-liquefaction procedure summarized in Figure 1 [for details see J. Shabtai, T. Skulthai and I. Saito, Am. Chem. Soc. Div. Fuel Chem. Prepr., 31 (4), 15--23 (1986)]. The procedure consists essentially of the following sequential steps: (1) Intercalation of the coal sample with catalytic amounts (5--20 %) of FeCl[sub 3], followed by mild hydrotreatment (HT) of the coal-FeCl[sub 3] intercalate; (2) base-catalyzed depolymerization (BCD) of the product from step 1, under super-critical conditions; and (3) hydroprocessing (HPR) of the depolymerized product from the two preceding steps, using a sulfided 6Co8Mo catalyst. A systematic study was carried out with the purpose of determining the optimal range of processign conditions for EH (Ky) coal in each step of the above sequential procedure.
- Research Organization:
- Utah Univ., Salt Lake City, UT (United States). Dept. of Fuels Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-86PC90537
- OSTI ID:
- 6454618
- Report Number(s):
- DOE/PC/90537-T3; ON: DE93015628
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sequential low-temperature depolymerization and liquefaction of US coals
Sequential low-temperature depolymerization and liquefaction of US coals. Progress report No. 5, October 1--December 31, 1987
Related Subjects
COAL
CHEMICAL COMPOSITION
DEPOLYMERIZATION
CALORIFIC VALUE
CATALYSTS
CATALYTIC EFFECTS
COBALT
EXPERIMENTAL DATA
HYDROGENATION
IRON CHLORIDES
MOLYBDENUM
PROGRESS REPORT
YIELDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMBUSTION PROPERTIES
DATA
DECOMPOSITION
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
IRON COMPOUNDS
MATERIALS
METALS
NUMERICAL DATA
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction