Enriched fuel making and sewage treating process
First Claim
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1. In a process for producing a solid fuel from a slurry formed from raw sewage and particulate coke, the steps of:
- conducting said slurry through a plurality of pressure sealed zones in series;
physically agitating the slurry during movement through said zones;
injecting super-heated steam into said zones during said movement of the slurry therethrough to release only non-noxious gases and volatiles leaving a liquid depleted residue;
compacting the residue discharged under pressure from the zones within a reaction zone;
injecting hydrogen gas into the reaction zone during compaction of the residue to form a compacted mass; and
cooling said compacted mass to form the solid fuel product.
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Abstract
Particulate coke and raw sewage are mixed and conveyed as a slurry through series connected, pressure sealed chambers into which super-heated steam is injected to convert the mixture into a molten mass depleted of noxious gases and volatiles. The molten mass is compacted while exposed to reactive hydrogen gas to form an enriched solid fuel log.
16 Citations
9 Claims
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1. In a process for producing a solid fuel from a slurry formed from raw sewage and particulate coke, the steps of:
- conducting said slurry through a plurality of pressure sealed zones in series;
physically agitating the slurry during movement through said zones;
injecting super-heated steam into said zones during said movement of the slurry therethrough to release only non-noxious gases and volatiles leaving a liquid depleted residue;
compacting the residue discharged under pressure from the zones within a reaction zone;
injecting hydrogen gas into the reaction zone during compaction of the residue to form a compacted mass; and
cooling said compacted mass to form the solid fuel product. - View Dependent Claims (2, 3, 4)
- conducting said slurry through a plurality of pressure sealed zones in series;
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5. A method of continuously treating raw sewage and enriching a relatively low energy content solid fuel, comprising the steps of:
- grinding said solid fuel into particles;
mixing said particles with the raw sewage to form a slurry;
mixing the slurry during movement with super-heated steam until non-noxious gases and volatiles are evolved therefrom, leaving a liquid depleted mass;
exposing said mass to a reactive gas other than steam; and
compacting said mass into a solid fuel product. - View Dependent Claims (6, 7, 8)
- grinding said solid fuel into particles;
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9. A method of treating sewage which comprises mixing the sewage with particulate coke within a pressure sealed chamber;
- subjecting the mix to the action of heat during movement through said chamber by mixing with superheated steam;
extracting volatile by-products from the chamber during the heating operation;
discharging a liquid-depleted residue of said mix from said chamber;
compacting said residue; and
subjecting said residue to hydrogen gas during compaction thereof.
- subjecting the mix to the action of heat during movement through said chamber by mixing with superheated steam;
Specification