Apparatus for continuously producing chromic anhydride
Abstract
Abstract APPARATUS ADAPTED FOR USE IN PRODUCING CHROMIC ANHYDRIDE WHICH COMPRISES A STATIONARY CYLINDRICAL CASING OF THE EXTERNALLY HEATED TYPE PROVIDED WITH A JACKET IN WHICH A HIGH-SPEED ROTARY CONVEYER FOR FORCIBLY MOVING AN ALKALI METAL DICHROMATE FORWARDLY, A HIGH-SPEED ROTARY KNEADER FOR MIXING AND KNEADING SAID ALKALI METAL DICHROMATE AND SULFURIC ACID TO CAUSE THEM TO REACT WITH EACH OTHER AND PRODUCE A REACTION PRODUCT WHILE MOVING THEM FORWARDLY, AND A HIGH-SPEED ROTARY CENTRIFUGAL CONTINUOUS EVAPORATOR ADAPTED TO FORM A THIN FILM OF SAID REACTION PRODUCT ON CYLINDRICAL INNER WALLS TO FORCIBLY EFFECT DEAERATION OF THE SAME, ARE ARRANGED IN THE INDICATED ORDER IN END TO END RELATION. IN THE REACTOR DESCRIBED ABOVE, A STATIONARY CYLINDRICAL CASING SECTION HOUSING SAID HIGH SPEED ROTARY CENTRIFUGAL CONTINUOUS EVAPORATOR THEREIN MAY BE FORMED INTEGRALLY AS A UNIT WITH A CONVEYING AND REACTION STATIONARY CYLINDRICAL CASING SECTION HOUSING SAID HIGH SPEED ROTARY CONVEYER AND SAID HIGH SPEED ROTARY KNEADER IN ALIGNMENT WITH THE LATTER SECTION OR THE SAID TWO STATIONARY CYLINDRICAL SECTIONS MAY BE FORMED AS INDEPENDENT UNITS.
Inventors
- 👤 Keizo Honbo
Bibliographic Details
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |