Claims
- 1. In a process of making coke from a non-caking or weakly caking coal wherein a mixture in proper proportions of carbonaceous solids and carbonaceous binder derived from said coal by solvent extraction thereof is used as part or all of the feed to a coke oven, the improvement which comprises
- the use of fluidizer char produced by the low temperature carbonization of coal in a fluidized bed as said carbonaceous solids,
- thereby producing a coke product upon shattering which is predominantly in the size range from about 0.5 to about 4.0 inches.
- 2. The improvement of claim 1 wherein said size range is from about 0.5 to about 3.0 inches.
- 3. The improvement of claim 1 wherein said size range is from about 0.75 to about 4.0 inches.
- 4. The improvement of claim 1 wherein at least 50 weight percent of the coke so produced is in said size range.
- 5. In the process of making blast furnace coke from a non-caking or weakly caking coal wherein a mixture in proper proportions of carbonaceous solids and carbonaceous binder derived from said coal by solvent extraction thereof is used as part or all of the feed to a coke oven, the improvement which comprises
- blending said carbonaceous binder with carbonaceous solids comprising char produced by the low temperature carbonization of coal in a fluidized bed, said blending being effected by tumbling said binder in a liquid state and said char in a rotary kiln under pelletizing and non-carbonizing conditions,
- whereby a coke product which is predominantly in the size range from about 0.5 to about 4.0 inches is produced upon shattering.
- 6. The improvement of claim 5 wherein said size range is from about 0.5 to about 3.0 inches.
- 7. The improvement of claim 5 wherein said size range is from about 0.75 to about 4.0 inches.
- 8. The improvement of claim 5 wherein at least 50 weight percent of the coke so produced is of a size from about 0.5 to about 4.0 inches.
- 9. The process of producing a strong, lump coke from a non-caking or weakly caking coal comrpising:
- (a) extracting said coal with a solvent in the presence of hydrogen available at extraction conditions, to yield a product containing extract and solid hydrocarbonaceous residue;
- (b) removing at least the majority of the solvent from said product;
- (c) thereafter blending said extraction product in a liquid state with finely divided fluidizer char at elevated temperature under non-carbonizing conditions;
- (d) recovering the product from step (c), cooling and crushing same to a finely divided state;
- (e) subjecting said product from step (d) to destructive distillation in a conventional slot-type coke oven; and
- (f) recovering coke from said coke oven which after shattering has a size range predominantly from about 0.5 to about 4.0 inches.
Parent Case Info
This application is a continuation-in-part of our earlier filed application, U.S. Ser. No. 764,629, filed Feb. 1, 1977, entitled "Feedstock for Coke Ovens," now abandoned.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
764629 |
Feb 1977 |
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