Analytical Methods for Coal and Coal Products. Volume III by Clarence Karr

By Clarence Karr

Analytical tools for Coal and Coal items, quantity III, is the 3rd of a three-volume treatise that goals to supply a close presentation of what constitutes the 1st entire reference paintings committed solely to the topic of analytical technique for coal and coal items. the 3 volumes were divided right into a overall of twelve elements, every one half containing numerous chapters dedicated to a specific topic. the current quantity bargains with gases, waste items, by-products, environmental difficulties, and miscellaneous analytical difficulties, in addition to particular instrumental innovations for fixing quite a few difficulties.
Because diverse facets of a specific topic are usually scattered via a variety of chapters within the volumes, cross-references among chapters were entered. moreover, the topic indexes were made as special as used to be sensible, and the reader will take advantage of exam of pertinent matters within the indexes of all 3 volumes. A cautious interpreting of those volumes will exhibit that definitive recommendations are usually not but on hand in a couple of situations. there's a transparent desire for persisted examine at the basics of research of coal and coal items, and the improvement of trustworthy and exact analytical instrumentation, together with on-stream purposes.

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Ox. a CnH2n-i4 C n H 2 „_i 2 Temperature range of fraction, °C Concentration comparison of polyaromatic compound types Mass Spectrometric Examination of TGA (5°CIMin) Roof Coal Fractions Fraction number TABLE XIII 56 M. C. Hamming, F. J. Καάά, and A. B. Carel 150-200 200-250 250-300 300-350 350-400 400-450 450-500 2 3 4 5 6 7 8 f b Most abundant species. Carbon range. Carbon range is less than three carbons. 100-150 1 a Temperature range of fraction, °C Cw Cw-Cw C,4 Cw-C, 6 c, 5 Cw C 12 -C M C,3 Cw-C 19 c, 5 Cw ClO"C 16 C,3 Cw C10-C23 Cw C10-C27 W C w " C 23 C Cw-C 27 C,6 c 16 Cw-c 25 c,e-c 17 C10-C24 ^23 C18 Cw-C 24 Cw Cw-C 27 ^12 Cw C -C Cw-C 22 c 16 -c 17 C,6 C w - C 24 C,3"C 14 C , 0- C 22 Cw-C, 9 Cw-C 19 C,o-C19 b C -C *-Ί0 ^13 C,o-C14 C„H 2 „_, 6 Small a C„H2„_14 Small c c C„H 2 „_, 2 C,8 C,4-C 24 C W C 1 4-C 28 C,4-C 23 C,6-Cw C,5 C , 4 - C 22 C,4-C,8 C,4 C,4 C,4-Cu Small - C„H 2n _, 8 C i f .

5 52 M. C. Hamming, F. /. Radd, and A. B. 05 \ Si? 14 — For 5 min grinding time. These volatiles are the same as those which would be released from the inner surfaces of the coal upon increased heating. Among these components are those which eventually would find their way into the atmosphere and surface waters. The coal industry has long known that stored coals oxidize and slowly change (decrease) in BTU values, but the specific chemistry of such coal surface-produced natural changes has not been analytically defined heretofore.

6. Schematic for analysis of low concentration of sulfur compounds. backflush valve are switched to permit one source of nitrogen to backflush the tar, oils, and water to atmosphere and a second source to separate the sulfur compounds on the ί x 11 in. Teflon column filled with a special silica gel. The separated COS, CS 2 , and H 2 S flow to the FPD. The columns and valves are maintained at 63°C, and nitrogen is the carrier gas at a flow rate of 16 cm 3 /min. These sulfur compounds, except H 2 S, can also be analyzed in the sour gas.

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