Fluid fuel from coal and method of making same
OwnerEric H. Reichlinventor
Life of this patent
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Abstract
Coal is gasified to produce carbon monoxide which is converted to carbon by a reverse Boudouard reaction 2CO.fwdarw.CO.sub.2 +C The carbon dioxide is recycled and reacted with coal to create more carbon monoxide by the Boudouard reaction CO.sub.2 +C.fwdarw.2CO The resulting carbon is recovered and mixed with a liquid to form a liquid slurry of particulate carbon which is useful as a liquid fuel. The liquid may be water or hydrocarbonaceous liquids. The process optimizes recovery of carbon from coal in a usable form, substantially free of sulfur, hydrogen, ash and nitrogen.
Claims5
A method for generating from coal a liquid fuel in the form of a combustible liquid carbon slurry comprising:
- a. reacting substantially the entire said coal with oxygen and carbon dioxide in a gas generation chamber to produce products consisting essentially of ash and carbon monoxide entrained in a gas stream with reacted gases and other gases;
- b. passing said gas stream into a reaction chamber containing catalyst for the reverse Boudouard reaction to convert the carbon monoxide into carbon dioxide and free carbon and recovering the free carbon from the reaction chamber;
- c. separating the gases in said reaction chamber into carbon dioxide and residue gases;
- and
- d. returning at least a portion of the carbon dioxide rich gas stream to the said gas generation chamber for reaction with coal;
- e. recovering the said residue gas stream.
Dependencies are inferred from the claim text.