Texaco Liquefies Coal with Coal By-Product

October 05, 2009

ScienceDirect - Fuel : Coal liquefaction using a hydrogenated creosote oil solvent : : H-atom transfer from hydrogen donor co.

Following through on our assertions that the by-products of coal processing, specifically coal tars, can be beneficial additives for a coal-to-liquid fuel processor of appropriate design; and, that Big Oil knows all about the fact that coal can be efficiently converted into liquid petroleum substitutes, we present the enclosed report on liquefying coal, using a coal oil product, from Texaco.

As follows:

"Coal liquefaction using a hydrogenated creosote oil solvent: H-atom transfer from hydrogen donor components in the solvent

Erv J. Kuhlmann, Dick Y. Jung, Richard P. Guptill, Charles A. Dyke and Hyung K. Zang

Texaco Research Center, PO Box 509, Beacon, NY 12508, USA

Abstract

The presence of hydroaromatic, hydrogen donor components in a coal-derived solvent is one of the more important factors in the successful operation of a non-catalytic coal liquefaction process. Various hydrogen donor species present in a hydrogenated creosote oil have been identified. Their rate of disappearance under conditions that are consistent with a short residence time coal liquefaction process has been used to rank the reactivities of the various hydrogen donors. 1,2,3,10b-Tetrahydrofluoranthene was found to be an exceptional donor while 4,5-dihydropyrene, the hexahydropyrenes and 9,10-dihydrophenanthrene were found to be quite active. Sym.-octahydrophenanthrene and 2a,3,4,5-tetrahydroacenaphthene exhibited moderate activity. Tetralin and the four methyltetralin isomers were found to be unreactive under the coal liquefaction conditions employed."