Apparatus for processing bituminous sands
Abstract
Abstract THE PRESENT INVENTION PROVIDES NEW AND IMPROVED APPARATUS FOR PROCESSING BITUMINOUS SANDS TO RECOVER PETROLEUM. THE APPARATUS IS PREFERABLY A MULTI-CELL STRUCTURE PRINCIPAL CELLS OF WHICH INCLUDE BOTTOM STIRRER ZONES AND UPPER QUIET ZONES SEPARATED FROM THE STIRRE ZONES BY BAFFLES. CONTINUOUS THROUGH-PLANT FEED IS PROVIDED FOR THE PLANT STRUCTURE BY PARTIALLY PROCESSED SANDS BEING URGED INTO SUBSEQUENT CELLS FOR CONTINUED PROCESSING. AN OIL SLICK FORMS THE UPPER SURFACES OF THE FLUID LEVELS IN EACH CELL AND THE SO-FORMED OIL SLICK GRADUALLY SPILLS OVER INTO COLLECTION TROUGH. NOVEL IMPELLER OR STIRRER MEANS ARE PROVIDED TO PROVIDE THE REQUISITE, SLIGHT AGIATATION AT THE BOTTOM OF EACH CELL FOR OIL SEPARATION AND YET RETAIN THE STIRRED MIXTURE AT THE BOTTOM OF THE CELL TO THE BOTTOM ZONE OF EACH CELL AFFECTED. ADJUSTABLE GATE MEANS ARE PROVIDED ACCOMMODATE REGULATION OF FEED-THROUGH THROUGH THE PLANT STRUCTURE.
Inventors
- 👤 Ray S Brimhall
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |