US2724683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving thermal balance in hydrodesulfurization and reforming
Assignee: ExxonMobil Oil Corp
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Filing: 1952-07-15
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Granted: 1955-11-22
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Expires: 1972-07-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Nadro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:43
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/12; C10G69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A METHOD OF DESULFURIZING AND REFORMING HYDROCARBON MIXTURES WHEREBY IMPROVED THERMAL BALANCE IS OBTAINED WHICH COMPRISES INTRODUCING ACTIVE PARTICLE-FORM REFORMING CATALYST AT A TEMPERATURE OF ABOUT 800* TO ABOUT 1100* F. INTO A REFORMING ZONE AT REFORMING CONDITIONS OF TEMPERATURE AND PRESSURE, SAID CATALYST CONTAINING HEAT IN EXCESS OF THE REQUIRED FOR SAID REFORMING REACTION, FLOWING SAID CATALYST DOWNWARDLY THROUGH SAID REFORMING ZONE INTO A COOLING ZONE, FLOWING SAID CATALYST DOWNWARDLY THROUGH SAID COOLING ZONE INTO A DESULFURIZING ZONE UNDER DESULFURIZING CONDITIONS OF TEMPERATURE AND PRESSURE AT A TEMPERATURE LOWER THAN SAID REFORMING TEMPERATURE AND ABOUT 500* TO ABOUT 900* F., FLOWING SAID CATALYST DOWNWARDLY THROUGH SAID DESULFURIZING ZONE TO A CATALYST OUTLET, WITHDRAWING CATALYST FROM SAID DESULFURIZING ZONE, INTRODUCING A FIRST HYDROCARBON MIXTURE AT A TEMPERATURE OF ABOUT 500* TO ABOUT 800* F. INTO SAID DESULFURIZING ZONE AT A LOCUS ABOVE THE CATALYST INLET THERETO, FLOWING SAID FIRST HYDROCARBON MIXTURE IN INDIRECT HEAT EXCHANGE WITH CATALYST FLOWING INTO SAID DESULFURIZING ZONE, FLOWING SAID FIRST HYDROCARBON MIXTURE DOWNWARDLY THROUGH SAID DESULFURIZING ZONE, REMOVING REACTION PRODUCTS FROM SAID DESULFURIZING ZONE, INTRODUCING A SECOND HYDROCARBON MIXTURE AT A TEMPERATURE BELOW SAID REFORMING TEMPERATURE INTO SAID COOLING ZONE, FLOWING SAID SECOND HYDROCARBON MIXTURE UPWARDLY THROUGH SAID COOLING ZONE COUNTERCURRENT TO SAID DOWNWARDLY
Claim 2
Independent Claim
209 words
A METHOD OF DESULFURIZING AND REFORMING HYDROCARBON MIXTURES WHEREBY IMPROVED THERMAL BALANCE IS OBTAINED WHICH COMPRISES INTRODUCING ACTIVE PARTICLE-FORM REFORMING CATALYST AT A TEMPERATURE OF ABOUT 800* TO ABOUT 1100* F. INTO A REFORMING ZONE AT REFORMING CONDITIONS OF TEMPERATURE AND PRESSURE, SAID CATALYST CONTAINING HEAT IN EXCESS OF THE REQUIRED FOR SAID REFORMING REACTION, FLOWING SAID CATALYST DOWNWARDLY THROUGH SAID REFORMING ZONE INTO A COOLING ZONE, FLOWING SAID CATALYST DOWNWARDLY THROUGH SAID COOLING ZONE INTO A DESULFURIZING ZONE UNDER DESULFURIZING CONDITIONS OF TEMPERATURE AND PRESSURE AT A TEMPERATURE LOWER THAN SAID REFORMING TEMPERATURE AND ABOUT 500* TO ABOUT 900* F., FLOWING SAID CATALYST DOWNWARDLY THROUGH SAID DESULFURIZING ZONE TO A CATALYST OUTLET, WITHDRAWING CATALYST FROM SAID DESULFURIZING ZONE, INTRODUCING A FIRST HYDROCARBON MIXTURE AT A TEMPERATURE OF ABOUT 500* TO ABOUT 800* F. INTO SAID DESULFURIZING ZONE AT A LOCUS ABOVE THE CATALYST INLET THERETO, FLOWING SAID FIRST HYDROCARBON MIXTURE IN INDIRECT HEAT EXCHANGE WITH CATALYST FLOWING INTO SAID DESULFURIZING ZONE, FLOWING SAID FIRST HYDROCARBON MIXTURE DOWNWARDLY THROUGH SAID DESULFURIZING ZONE, REMOVING REACTION PRODUCTS FROM SAID DESULFURIZING ZONE, INTRODUCING A SECOND HYDROCARBON MIXTURE AT A TEMPERATURE BELOW SAID REFORMING TEMPERATURE INTO SAID COOLING ZONE, FLOWING SAID SECOND HYDROCARBON MIXTURE UPWARDLY THROUGH SAID COOLING ZONE COUNTERCURRENT TO SAID DOWNWARDLY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |