coal liquefaction us3796650
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The present disclosure provides methods and systems for coal liquefaction using a hydrogenated vegetable oil. A method of obtaining a de-ashed coal extract includes exposing .
Shenhua Direct Coal Liquefaction Project1、Necessity to Develop Coal-to-Oil Technolo. History of Development on China ShenhuaCoal Liquefaction ProcessBSUShenhuaand .
A process of preparing a donor solvent for coal liquefaction. Liquefied coal is distilled to. preferably partially hydrogenated prior to use as a donor solvent for the liquefaction of co.
The invention pertains generally to coal liquefaction and particularly to coal liquefaction by oxidation and heating. Chemically, coal is a compacted mixture of organic compounds c.
Role of iron-based catalyst and hydrogen transfer in direct coal liquefaction Li, X; Hu, SX; Jin, LJ; Hu, HQ Hu, HQ, Dalian Univ Technol, Inst Coal Chem Engn, 129 St, Dalian 1160.
The present invention relates to an improved process for liquefaction of raw coal. More particularly, the invention relates to a three-stage process employing a non-catalytic dissolu.
Coal liquefaction is the coal to liquids process that takes two steps (coal gasification and gas to liquids) to upgrade coal to synthetic liquid fuels, such as synthetic diesel and synth.
Preliminary extraction of coal with mineral acid changes the course of coal liquefaction in. 1. A process for liquefaction of coal by reaction of crushed coal in an aromatic recycle so.
Process for coal liquefaction and catalyst US 4294685 A A method for hydroconversion of coal solids in a solvent by contact with molecular hydrogen and catalyst solids in a.
Coal liquefaction by base-catalyzed hydrolysis with CO.sub.2 capture The one-step hydrolysis of diverse biomaterials including coal, cellulose materials such as lumber and fores.
The present invention relates to an improved process for the liquefaction of raw coal. More particularly, the invention relates to a three-stage process wherein solvents, having diffe.
Systems and methods for coal liquefaction are provided. According to one embodiment, coal is introduced into a plasma furnace. A plasma energy field is generated within the pl.
The centre mainly explores and develops direct and indirect coal liquefaction technologies, said the engineer. With this technology, coal is broken down into small molecules with h.
Sub-bituminous coal is directly liquefied in two stages by use of a liquefaction solvent containing insoluble material as well as 850° F.+ material and 850° F.- material derived fr.
the art relating to the liquefaction of coal has developed significantly in the last two decades. However, most of the art relating to coal liquefaction relates to optimizing coal liquefac.
In a process for the liquefaction of coal under increased pressure and temperature in a liquefaction zone, it is recommended that the liquefaction product exiting the liquefaction zo.
An improved process for catalytic solvent refining or hydroliquefaction of non-anthracitic coal at elevated temperatures under hydrogen pressure in a solvent comprises using as ca.
This invention relates to liquefaction of coal, and more particularly, to the separation of insoluble material from a coal liquefaction product by gravity settling. Coal can be converted.
coal liquefaction and is particularly related to staged catalytic coal hydrogenation and liquefaction process for producing high quality, low boiling hydrocarbon liquid products. 2. De.
The present disclosure relates to a coal liquefaction system for utilizing a hydrogenated vegetable oil to liquefy coal. The system includes a reactor for exposing a coal to a hydrog.
Make-Up I Hydrogenation 2.9 26 /2 2/ 27 l0 l3 I5 22 i TO 425 F coal Slurrying Liquefaction :81:2 Recovery 42 Stripping a '1 COAL LIQUEFACTION This invention relates to the liq.
M. H. Makgato, L. J. Moitsheki, and L. Shoko, Alkali-assisted coal extraction with polar a. G. L. Wang, R. Xu, D. X. Zhang, and X. L. Lu, The hydrogenation of coal liquefaction res.
US 05/691,916 1977614 (7), (10) Coal liquefaction . 2. The liquefaction reactor of claim 1 wherein each of said second tubes passes through.
liquefaction of coal, and more particularly to the de-ashing of a coal liquefaction product. Coal can be converted to valuable products by sub jecting coal to solvent extraction, with .
Process for liquefying coal or similar liquefiable carbonaceous solids in which the liquefaction solvent is a hydrotreated solvent mixture that is derived in the process. The solvent m.
'UPFLOW COAL LIQUEFACTION Filed May 4, 1970 4 Sheets-Sheet 2 EFFECT OF TE. liquefaction zone. Before introduction to the upliow liquefaction zone, a slurry of the coal .
hydrotreating coal dissolved and dispersed in a liquefaction solvent to produce a coal liquefaction product comprised of carbonaceous matter dissolved in the coal liquefaction so.
United States Patent C 3,796,650 COAL LIQUEFACTION PROCESS Peter Urban, Nor. coal. Under typical prior art liquefaction conditions, the solids are dispersed in the liquef.
Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two…