Patent US2910430A successfully refreshed from Google Patents.
US2910430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Start-up of platinum catalyst naphtha hydroforming system
Assignee: Standard Oil Co
•
Filing: 1955-04-20
•
Granted: 1959-10-27
•
Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 James A Bock
- 👤 Robert S Mcdaniel
- 👤 David W Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:31
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/22; Y; Y10; Y10S; Y10S29/00; Y10S29/029
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF STARTING UP A PLATINUM CATALYST NAPHTHA HYDROFORMING SYSTEM INCLUDING LEAD, INTERMEDIATE AND TAIL REACTORS, HEATING ZONES, A GAS SEPARATION ZONE, A COMPRESSOR AND LINES FOR RECYCLING SEPARATED GAS, WHICH METHOD COMPRISES PURGING CATALYST BEDS AND REACTORS WITH AN INERT GAS TO REMOVE OXYGEN THEREFROM, PURGING INERT GAS FROM THE REACTORS WITH AN UNREACTIVE HYDROCARBON GAS, CIRCULATING SAID HYDROCARBON GAS THROUGH THE REACTORS WHILE HEATING IT TO INCREASE THE REACTOR TEMPERATURES TO ABOUT 700*F., INTRODUCING PREHEATED NAPHTHA CHARGING STOCK AT A TEMPERATURE IN THE RANGE OF ABOUT 700* TO 800*F. INTO ONE OF THE REACTORS WHILE THE PRESSURE OF THE CIRCULATING HYDROCARBON GAS IS IN THE RANGE OF ABOUT 30 TO 200 P.S.I.G., CONTINUING THE INTRODUCTION OF NAPHTHA CHARGING STOCK AT A TEMPERATURE IN SAID RANGE UNTIL THE
Claim 2
Independent Claim
130 words
THE METHOD OF STARTING UP A PLATINUM CATALYST NAPHTHA HYDROFORMING SYSTEM INCLUDING LEAD, INTERMEDIATE AND TAIL REACTORS, HEATING ZONES, A GAS SEPARATION ZONE, A COMPRESSOR AND LINES FOR RECYCLING SEPARATED GAS, WHICH METHOD COMPRISES PURGING CATALYST BEDS AND REACTORS WITH AN INERT GAS TO REMOVE OXYGEN THEREFROM, PURGING INERT GAS FROM THE REACTORS WITH AN UNREACTIVE HYDROCARBON GAS, CIRCULATING SAID HYDROCARBON GAS THROUGH THE REACTORS WHILE HEATING IT TO INCREASE THE REACTOR TEMPERATURES TO ABOUT 700*F., INTRODUCING PREHEATED NAPHTHA CHARGING STOCK AT A TEMPERATURE IN THE RANGE OF ABOUT 700* TO 800*F. INTO ONE OF THE REACTORS WHILE THE PRESSURE OF THE CIRCULATING HYDROCARBON GAS IS IN THE RANGE OF ABOUT 30 TO 200 P.S.I.G., CONTINUING THE INTRODUCTION OF NAPHTHA CHARGING STOCK AT A TEMPERATURE IN SAID RANGE UNTIL THE
References Cited (Backward Citations)
US2184235A
Cited
US2335610A
Cited
US2388536A
Cited
US2330462A
Cited
US2641582A
Cited
US2737477A
Cited
US2749287A
Cited
US2773013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |