Kentucky coal analysis

Bettinelli, M., Baroni, U., Pastorelli, N. and Bizzarri, G. (1992). ICP-AES, GFAAS, XRF and NAA coal fly-ash analysis - comparison of different analytical techniques. In Elemental Analysis of Coal and Its By-Products, ed. Vourvopoulos, G., World Scientific, Kentucky, pp. 372-394. 

The coal liquid is obtained by reacting Kentucky 9/14 coal-LRO slurry for 60 minutes at 410°C in an autoclave reactor under 2000 psig (13.9 MPa) hydrogen pressure. The product from the autoclave is collected and filtered using Watman 51 filter paper to remove the mineral matter and undissolved coal. The liquid product is saved and used for further hydrotreating studies. The analysis of the filtered product from the coal dissolution step is given in Table I. 

Johnson, P. J., "Computer Simulation, Second-Law Analysis, and Economics of Coal Gasification Processes," Ph.D. Dissertation, Univ. of Kentucky, Lexington, KY, Available from the University Mocrofilms, Ann Arbor, MI, Order No. 80-27,985 (1980). 

Mineral matter was a Deis ter table concentrate from Robena mine coal. It contained 68% pyrite and less than 4% organic material. The remainder was largely clay. In one case, a handpicked sample taken from a pyrite nodule found in a Pittsburgh seam coal was used. The microcrystals were crushed and sieved to 325 x 400 mesh. X-ray diffraction analysis indicated the only major component was pyrite, with a trace of marcasite also present. After heating in tetralin at 450°C for 15 min., the X-ray diffraction patterns of the recovered microcrystals indicated conversion was complete to pyrrhotite 1C. The coal was hvB, Homestead Mine, Kentucky, ground to pass 200 mesh. Ash and pyrite contents were 16.8% and 4.9%, respectively. The asphaltene was a homogenized mixture of samples isolated from liquid products derived from Pittsburgh seam, hvA coal. Its ash content was <0.1%( ). 

One coal ash from the Kanawha River Valley of eastern Kentucky (EKY-FA) was evaluated. Trace-metal concentrations were low in this leachate and also low in the whole ash analysis. Ca, Mg, Na and K concentrations were deficient in the leachate in comparison to the other ash leachates. 

The second process utilizing coal is the conversion of coal-to-liquids. The coal to liquids process was originally developed to convert hvc bituminous coal from the Western Kentucky Hamilton Hines of Island Creek Coal Co., also a subsidiary of Occidental Petroleum Corporation, into liquid fuels. A typical analysis of the coal is shown in Table V. 

Petroleum coke was cofired in Paradise Fossil Plant (see Figure 2.7) Unit 1, a 700 MWe cyclone boiler equipped with 14 cyclone barrels, each 3.05 m (10 ft) in diameter. These cyclones are equipped with radial feeders. The boiler generates 611.6 kg/sec (4,850,000 Ib/hr) of 166.6 bar/565°C/538°C (2415 psig/1050T/1000 F) steam. The unit is equipped with a wet scrubber for SO2 emissions control. At the time of testing, the typical fuel burned at this installation was Western Kentucky high sulfur coal, with characteristics as shown in Table 2.10. Also shown in Table 2.10 is the analysis of the petroleum coke burned during the test period. 

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