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Production and Screening of Carbon Products Precursors from Coal. Final Report.

DE2005835013

Publication Date	2001
Page Count	24
Abstract	The authors have examined effects of blending a raw coal extract (EXT) with an extracted coal-tar pitch (ECTP). Previous reports were concerned with the addition of 15 wt% EXT, or less, on the physical characteristics of the blend and on the development of optical texture following carbonization. Two additional blends of ECTP and EXT were prepared at the 30 and 50 wt% EXT content using a procedure already described. The characteristics of the blends are presented. The density for these blended materials is not much different than the density for the blends reported earlier. The softening point temperature for the 30 wt% EXT increased to over 200 C while the softening point temperature for the 50 wt% EXT blend was too high to be determined by the Mettler method. Coke yields approximately follow the law of mixtures. The optical texture of the green cokes for the 30 and 50 wt% EXT blends is shown. Though the optical texture of the green cokes was not significantly affected where the level of EXT is 15 wt% or less, larger proportions of EXT exert a marked reduction in anisotropy. The co-processing of coal with petroleum residues or other heavy hydrocarbons at elevated temperature and pressure has received considerable attention in the research community as a means to upgrade simultaneously coal and byproducts. Heavy hydrocarbons can function as sources of hydrogen, as well as performing as a medium for dissolution and dispersion of coal fragments. However, the focus of much of the prior research has been on developing fuels, distillable liquids, or synthetic crudes. Comparatively little effort has been deliberately directed toward the production of heavier, non-distillable materials which could perform as binder and extender pitches, impregnants, or feedstocks for cokes and other carbons.
Keywords	Coal Lignite Peat Tables(Data) Fossil fuels Coal extracts Carbon Coal tar products Production
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ. Research Corp., Morgantown.; National Energy Technology Lab., Pittsburgh, PA.
Supplemental Notes	Sponsored by National Energy Technology Lab., Pittsburgh, PA.
Document Type	Technical Report
NTIS Issue Number	200525

Production and Screening of Carbon Products Precursors from Coal. Final Report.

Production and Screening of Carbon Products Precursors from Coal. Final Report.
DE2005835013

Publication Date	2001
Page Count	24
Abstract	The authors have examined effects of blending a raw coal extract (EXT) with an extracted coal-tar pitch (ECTP). Previous reports were concerned with the addition of 15 wt% EXT, or less, on the physical characteristics of the blend and on the development of optical texture following carbonization. Two additional blends of ECTP and EXT were prepared at the 30 and 50 wt% EXT content using a procedure already described. The characteristics of the blends are presented. The density for these blended materials is not much different than the density for the blends reported earlier. The softening point temperature for the 30 wt% EXT increased to over 200 C while the softening point temperature for the 50 wt% EXT blend was too high to be determined by the Mettler method. Coke yields approximately follow the law of mixtures. The optical texture of the green cokes for the 30 and 50 wt% EXT blends is shown. Though the optical texture of the green cokes was not significantly affected where the level of EXT is 15 wt% or less, larger proportions of EXT exert a marked reduction in anisotropy. The co-processing of coal with petroleum residues or other heavy hydrocarbons at elevated temperature and pressure has received considerable attention in the research community as a means to upgrade simultaneously coal and byproducts. Heavy hydrocarbons can function as sources of hydrogen, as well as performing as a medium for dissolution and dispersion of coal fragments. However, the focus of much of the prior research has been on developing fuels, distillable liquids, or synthetic crudes. Comparatively little effort has been deliberately directed toward the production of heavier, non-distillable materials which could perform as binder and extender pitches, impregnants, or feedstocks for cokes and other carbons.
Keywords	Coal Lignite Peat Tables(Data) Fossil fuels Coal extracts Carbon Coal tar products Production
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ. Research Corp., Morgantown.; National Energy Technology Lab., Pittsburgh, PA.
Supplemental Notes	Sponsored by National Energy Technology Lab., Pittsburgh, PA.
Document Type	Technical Report
NTIS Issue Number	200525