Fluid coking of coal liquefaction residues.
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Fluid coking of coal liquefaction residues. by Exxon Research and Engineering Company. Baytown Research and Development Division

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Published by Dept. of Energy, for sale by the National Technical Information Service in [Washington], Springfield, Va .
Written in English


  • Coal liquefaction.

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Edition Notes

ContributionsUnited States. Dept. of Energy.
The Physical Object
Paginationv. :
ID Numbers
Open LibraryOL17649689M

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An overview of solid–liquid separation of residues from coal liquefaction processes Article (PDF Available) in The Canadian Journal of Chemical Engineering 91(2) February with Reads. When petroleum is refined, there are residues left behind that are processed into coke to yield either delayed coke or fluid the delayed coking process, various petroleum feedstocks, including vacuum and pyrolysis residues and decant oils heated to about °C are pumped into a drum and held for 24 hours (Adams, ). An overview of conversion of residues from coal liquefaction processes Article (PDF Available) in The Canadian Journal of Chemical Engineering 91(10) October with Reads. Coal Liquefaction is the process of converting coal to liquid fuels. Coal Liquefaction Definition. The process of coal liquefaction creates synthetic liquid fuels from solid coal as substitutes for various petroleum products. There are two types of liquefaction - direct and indirect Williams R. H., Larson, E. D. (December ). A comparison of direct and indirect liquefaction technologies for.

Coal liquefaction is a process of converting coal into liquid hydrocarbons: liquid fuels and petrochemicals. This process is often known as "Coal to X", where X can be many different hydrocarbon-based products. However, the most common process chain is "Coal to Liquid Fuels" (CTL). 1 Historical background. Pyrolysis and carbonization processes. @article{osti_, title = {Pretreatment of coal and recycle oil for direct liquefaction}, author = {Winschel, R A and Lancet, M S and Robbins, G A and Burke, F P and Kottenstette, R J and Stephens, H P}, abstractNote = {A research and development program is being conducted by the University of Kentucky/Center for Applied Energy Research, Sandia National Laboratories, LDP Associates and.   Chromatography/mass spectrometry (GS/MS) was used to study toluene-soluble (TS) and pyridine-soluble (PS) fractions obtained from coal liquefaction residue by solvent extraction. It was found that the toluene-soluble fraction, containing mainly polycyclic aromatic hydrocarbons with rings, is a good feedstock for making needle coke. The pyridine-soluble fraction cannot be used for these Cited by: Relative to the Base Case, product cost reductions for Cases were roughly estimated as follows: Case % Cost Reduction[7] 1 20 2 22 3 28 B. Wyoming Coal Case To determine the effect of coal type on the EDS liquefaction process, ER&E performed a study design for sub-bituminous Wyodak coal.[12][14][15] This design was patterned after the

Coal liquefaction, any process of turning coal into liquid products resembling crude two procedures that have been most extensively evaluated are carbonization—heating coal in the absence of air—and hydrogenation—causing coal to react with hydrogen at high pressures, usually in the presence of a hydrogenation was extensively used in Germany in World War II to. Reason for Discussion of Direct Liquefaction of Coal in Gasifipedia As the following discussion of Direct Coal Liquefaction (DCL) explains, the fundamental process approach of DCL does not involve gasification at all. Therefore it would seem to be entirely out of scope of Gasifipedia. However, the following considerations require that discussion of DCL be included. Abstract. Recent years have seen vast experimentation with many different process designs for the liquefaction of coals. The degree of coal conversion and composition of the product oil vary with both the coal rank, maceral composition, mineral matter content, and conversion by: 1. Residues from the combustion of coal for energy production consist mainly of slag, ashes and flue gas desulphurisation gypsum. Residue generation has increased in the EU by about 12% in the period , and now amounts to % of total waste generation.