Coal Tar Dissolution in Water

solvent extraction for remediation of coal tar contaminated sit Other aspects of the project included examination of the mass transfer limitations to insitu solvent extraction of contaminated soils (8) and large-scale subsurface modeling of an in situ solvent extraction process to explore deployment options and estimate cleanup times (9)...

Extraction of coal

Aug 26, 2014· Coal-tar pitch (CP) is a promising carbon raw material for producing needle coke, carbon fiber etc During processing, the H/C ratio, ash content, and quinoline insoluble (QI) in the CP are the key factors that influence the material preparation In this study, NMP was selected to extract CP first; then [BMIM]Cl/NMP mixed solvent was used; and finally a series of ionic liquids (ILs) mixtures ....

From coal, a new source of rare earths

University of Kentucky researchers use this solvent extraction system to recover rare-earth elements from coal-based products There is plenty of acid mine drainage sludge in West ia to keep ....

Coal extraction process

Jun 09, 1981· A further feature of the inventive process is the availability of simple measures for separating the extraction solvent from both the dissolved and residual undissolved matter of the coal which permits recovery of the solvent for further use in the extraction of fresh coal...

method of coal extraction

US4338183A - Method of solvent extraction of coal by A solid carbonaceous material, such as coal, is converted to liquid products and the asphaltene content of a heavy hydrocarbonaceous liquid is reduced in the process wherein the solid is solvent extracted by the heavy ....

Solvent Extraction of Coal

How is coal extracted? | Reference...

Solvent extraction of British Columbia coal

Furthermore, after use in the coal extraction process, the recovered middle o i l was better for vapour phase hydrogenation because the motor fuel produced contained a higher amount of aromatics - 3 -fhe extracted coal, after d i s t i l l a t i o n of the solvent, was also coked for the manufacture of high grade carbon of exceptionally low ....

Extraction of coal

Jul 18, 1978· We claim: 1 A high boiling aromatic solvent oil for the solvent extraction of coal, produced by extracting a heavy petroleum material with a solvent which selectively removes the aromatic components which are suitable for use as a solvent for coal from the material, admixing the extract with an aromatic solvent selected from benzene, toluene and xylene, washing out with water the selective ....