Development of analytical procedures for coprocessing. Quarterly technical progress report, April 1, 1991--June 30, 1991 [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: 15 pages : digital, PDF file
Additional Creators: United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

The overall objective of the contract is to improve understanding of the fundamental chemistry of coprocessing. A primary objective is to evaluate methods to distinguish between compound classes originating from coal versus those originating from petroleum resid while a corollary objective is to provide detailed knowledge on the composition of coprocessing products. This and the prior quarterly report summarize work conducted in support of the latter objective in which process development unit samples produced by HRI, Inc. were subjected to detailed analysis. Coprocessing resid samples selected for detailed analysis were made under constant conditions except for variations in coal concentration or in the coal (New Mexico subbituminous or Texas lignite). Separation of the resids into acid, base, saturate, and neutral-aromatic subtractions, separation of the neutral-aromatics by ring number and high temperature gas chromatography were discussed in the previous quarterly. This report includes results of nonaqueous titrations, elemental analyses and infrared spectroscopy. The hydrocarbon skeletons of saturated hydrocarbons in the coprocessing resids appear to be fundamentally different than those of aromatic species. Neutral-aromatic fractions contain minor levels of sulfur compounds, an unknown proportion of ether or other oxygen-containing species, and major concentrations of aromatic hydrocarbons containing from 3 to 7 aromatic rings. Base fractions contain predominantly single nitrogen compounds of azaarene or aminoaromatic type. Aminoaromatics (compounds analogous to aniline) are present in significant amounts in products made from New Mexico subbituminous coal but are nearly absent in the Texas lignite product. Acid fractions contain appreciable quantities of pyrrolic benzologs, but surprisingly low concentrations of compounds with a free OH group.

Report Numbers

E 1.99:doe/pc/88810--11
doe/pc/88810--11

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Note

Published through SciTech Connect.
07/01/1991.
"doe/pc/88810--11"
"DE94017931"
Anderson, R.P.; Green, J.B.
National Inst. for Petroleum and Energy Research, Bartlesville, OK (United States)

Type of Report and Period Covered Note

Quarterly; 04/01/1991 - 06/30/1991

Funding Information

AC22-88PC88810

View MARC record | catkey: 13841290