US2719111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1951-06-29
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Granted: 1955-09-27
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Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Clark E Adams
- 👤 Jr Charles N Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:49
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A METHOD FOR REFORMING VIRGIN NAPHTHAS BOILING WITHIN THE RANGE OF 100*-275* F., WHICH COMPRISES THE STEPS OF PROVIDING A FLUIDIZED BED OF FINELY DIVIDED CATALYST PARTICLES CONSISTING ESSENTIALLY OF CARBON PARTICLES PREVIOUSLY ACTIVATED AT A TEMPERATURE IN THE RANGE OF 1200*2000* F., CHARGING TO SAID BED THE VIRGIN NAPHTHA; MAINTAINING SAID NAPHTHAS IN CONTACT WITH SAID BED OF CATALYST AT REFORMING CONDITIONS OF TEMPEATURE AND PRESSURE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT THE DESIRED CONVERSION; WITHDRAWING THE CATALYST FROM THE REFORMING OPERATION; CHARGING IT TO A REGENERATION ZONE WHEREIN IT IS TREATED AT A TEMPERATURE OF 1200*-2000* F. WITH AN OXIDIZING GAS SELECTED FROM THE CLASS CONSISTING OF AIR, STEAM AND CARBON DIOXIDE; CONTINUALLY ADDING TO SAID REGENERATION ZONE FRESH CARBONACEOUS MATERIAL SUBSEQUENTLY CARBONIZED AND ACTIVATED THEREIN, WHILE SELECTIVELY REMOVING SPENT CARBON PARTICLE FINES OF HIGH ASH CONTENT WITH THE OVERHEAD GASES FROM SAID REFORMING OPERATION AND FROM SAID REGENERATION ZONE; AND CONTROLLING THE RATE OF SAID ADDITON AND SAID WITHDRAWAL TO MAINTAIN A CARBON CONCENTRATION OF AT LEAST ABOUT 30 TO 70 WEIGHT PER CENT IN THE REGENERATED CATALYST RETURNED TO THE REFORMING STEP.
Claim 2
Independent Claim
188 words
A METHOD FOR REFORMING VIRGIN NAPHTHAS BOILING WITHIN THE RANGE OF 100*-275* F., WHICH COMPRISES THE STEPS OF PROVIDING A FLUIDIZED BED OF FINELY DIVIDED CATALYST PARTICLES CONSISTING ESSENTIALLY OF CARBON PARTICLES PREVIOUSLY ACTIVATED AT A TEMPERATURE IN THE RANGE OF 1200*2000* F., CHARGING TO SAID BED THE VIRGIN NAPHTHA; MAINTAINING SAID NAPHTHAS IN CONTACT WITH SAID BED OF CATALYST AT REFORMING CONDITIONS OF TEMPEATURE AND PRESSURE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT THE DESIRED CONVERSION; WITHDRAWING THE CATALYST FROM THE REFORMING OPERATION; CHARGING IT TO A REGENERATION ZONE WHEREIN IT IS TREATED AT A TEMPERATURE OF 1200*-2000* F. WITH AN OXIDIZING GAS SELECTED FROM THE CLASS CONSISTING OF AIR, STEAM AND CARBON DIOXIDE; CONTINUALLY ADDING TO SAID REGENERATION ZONE FRESH CARBONACEOUS MATERIAL SUBSEQUENTLY CARBONIZED AND ACTIVATED THEREIN, WHILE SELECTIVELY REMOVING SPENT CARBON PARTICLE FINES OF HIGH ASH CONTENT WITH THE OVERHEAD GASES FROM SAID REFORMING OPERATION AND FROM SAID REGENERATION ZONE; AND CONTROLLING THE RATE OF SAID ADDITON AND SAID WITHDRAWAL TO MAINTAIN A CARBON CONCENTRATION OF AT LEAST ABOUT 30 TO 70 WEIGHT PER CENT IN THE REGENERATED CATALYST RETURNED TO THE REFORMING STEP.
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) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |