Deasphalting, deashing, and upgrading of coal liquids.
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Deasphalting, deashing, and upgrading of coal liquids.

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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.,
  • Liquid fuels.,
  • Hydrogenation.

Book details:

Edition Notes

SeriesFE ; 2645-03, FE -- 2645-3.
ContributionsRiedl, Frederick J., DeRosset, Armand J., United States. Dept. of Energy.
The Physical Object
Paginationv. :
ID Numbers
Open LibraryOL17651101M

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@article{osti_, title = {Deasphalting, deashing and upgrading of coal liquids. Quarterly technical progress report, October-December }, author = {Riedl, F.J. and deRosset, A.J.}, abstractNote = {Initial work on deashing of the SRC-I filter feed has yielded deashed oil recoveries of to wt % with an ash content of. A residue from deasphalting a syncrude obtained by direct coal liquefaction of a subbituminous Spanish coal was processed by thermal hydrotreatment. Kinetic study of the cracking reaction and coke formation reaction has been performed. The viscosity, coke content, boiling point distribution, elemental analysis, and aromaticity of the reaction products have been by: Nonconventional Vacuum Residue Upgrading Blended with Coal Tar by Solvent Deasphalting and Fluid Catalytic Cracking Jian Long, Benxian Shen *, Hao Ling, and Jigang Zhao State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, China 2. EXPERIMENTAL. Liquids obtained by direct coal liquefaction [] have been deasphalted in order to reduce the heteroatom content and the catalyst deactivation in methods have been tried; the deasphalting with hexane in autoclave at °C of temperature and 20 Kg/cm 2 pressure, conditions inside the range indicated in the LEDA process [] and Author: M.T. Martínez., I. Fernández., A. Benito., V. Cebolla., J.L. Miranda.

@article{osti_, title = {Deashing of coal}, author = {Ruehl}, abstractNote = {For the production of his ''Ruehlcoke'', Dr. Ruehl and others recommended the ''flotation'' process for deashing as the preliminary stage. Calcium chloride solution was the flotation agent they used, and a finely-ground coal was processed. Dr. Ruehl claimed that the trick of his success had to . The ionic liquids, namely, 1-n-butylmethylimidazolium tetrafluoroborate (IL1) and 1-n-butyl 3-methylimidazolium chloride (IL2) were employed for desulfurization of a few Indian coal samples in. Residues from Coal Liquefaction Processes B. J., ‘‘Deashing of Coal Liquids by Sonically Assisted a carbonization process for valid liquid-solid separation and upgrading of coal. A further decrease in pressure causes bubble formation, showing a three-phase equilibrium (liquid+liquid+vapor). At all times it was possible to measure the volume of each phase formed. Although the supercritical fluid looks like a liquid, we noticed a highly compressible behavior, similar to a vapor behavior.

continuously decreasing. Solvent deasphalting, as stated earlier, utilizes light hydrocarbon solvents and produces valuable extract product, called deasphalted oil (DAO) and thus reduces the net availability of vacuum residue in a refinery. When propane is used as solvent, the process is called propane deasphalting (PDA) (Figure-1) and it. To optimize the ratio of vacuum residua/coal tar (VR/CT) in VR solvent deasphalting processing and catalytic cracking processing, their compatibility and properties are investigated in the present work. The investigation reveals two competitive processes of dissolution and adsorption during the blend process. At low CT blending ratio, the molecule interactions in the VR colloidal Cited by: 3. We can define deasphalting process as a liquid-liquid separation operation that extracts the last of the easily convertible hydrocarbons from heavy oil [6]. Most deasphalting process use light aliphatic hydrocarbon such as propane, butane, pentane, etc., to precipitate asphaltic components from the feed. The choice ofAuthor: Shazly M. Salem, Galal M. Abdelaleem, Nadia A. Elsayed, Walaa Osman Saad.   In this study, desulfurization and deashing of Hazro coal via a flotation method were studied. For this purpose, experimental studies were conducted on the coal sample with ash, sulfur, volatile matter, and fixed carbon contents of %, %, %, and %, respectively, and two groups of flotation experiments were made. The effects of pH, collector Cited by: