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US 4,300,994 AGranted
Method for producing coke
AssigneeExxon Research & Engineering Co.
InventorRonald Liotta
Life of this patent
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Abstract
Disclosed is a method for improving the caking properties of coals by use of quaternary base solutions. Caking properties of various coals can be upgraded for the production of metallurgical grade coke, preferably with a substantially reduced mineral matter content.
Claims37
A method for improving the caking properties of coal or peat, which method comprises:
- (a) treating the coal with a quaternary base solution, and
- (b) by pyrolysing the treated coal at a temperature from about 400.degree. C. to about 600.degree. C.,
- wherein the quaternary base solution contains at least one quaternary base represented by the formula:
- R.sub.4 MOR'
- where each R is the same or different group selected from the C.sub.1 to C.sub.20 alkyl, aryl, acyl, arylalkyl, alkylaryl, ether, ester, as well as, sulfide, amine, heteroatoms of silicon, selenium or a metal selected from Groups IA and IIA of the Periodic Table of the Elements, M is selected from Group VA of the Periodic Table of the Elements, and R' is hydrogen or a C.sub.1 to C.sub.20 alkyl, aryl, arylalkyl or alkylaryl group.
2 more elements
A method for producing a coke having improved cake properties and having a substantially reduced level of mineral matter content, the method which comprises:
- (a) treating a coal or peat with a solution containing at least one or more quaternary bases;
- (b) physically separating mineral matter from the solution containing the treated coal;
- and
- (c) pyrolyzing the treated coal at a temperature from
- wherein the quaternary base solution contains at least one quaternary base represented by the formula:
- R.sub.4 MOR'
- where each R is the same or different group selected from the C.sub.1 to C.sub.20 alkyl, aryl, acyl, arylalkyl, alkylaryl, ether, ester, as well as, sulfide, amine, heteroatoms of silicon, selenium or a metal selected from Groups IA and IIA of the Periodic Table of the Elements, M is selected from Group VA of the Periodic Table of the Elements, and R' is hydrogen or a C.sub.1 to C.sub.20 alkyl, aryl, arylalkyl or alkylaryl group.
4 more elements
Dependencies are inferred from the claim text.