Patent US3030137A successfully refreshed from Google Patents.
Patent US3270078A successfully refreshed from Google Patents.
US3270078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and regenerative furnace system for the pyrolysis of hydrocarbons
Assignee: Lummus Technology LLC
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Filing: 1963-04-29
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Granted: 1966-08-30
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Marcel J P Bogart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:57
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/54; B; B01; B01J; B01J19/00; C10; C10G; C10G9/00; C10G9/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD FOR IMPROVING THE THERMAL EFFICIENTY OF A REGENERATIVE FURNACE SYSTEM FOR THE PYROLISIS OF A HYDROCARBON FEED AND INCLUDING A PAIR OF REGENRATIVE FURNACES HAVING A PYROLYSIS AND PREHEAT PHASE WHICH COMPRISES: (A) PREHEATING SAID HYDROCARBON FEED BY INDIRECT HEAT EXCHANGE IN A COMBUSTION CHAMBER; (B) INTRODUCING SAID PREHEATED HYDROCARBON FEED INTO A REGENERATIVE FURNACE DURING THE PYROLYSIS PHASE; (C) WITHDRAWING PYROLYSIS GASES FROM THE REGENERATIVE FURNACE OF STEP (B); (D) SIMULATANEOUSLY WITH STEP (B) INTRODUCING FUEL AND A COMBUSTION SUPPORTING MEDIUM TO A SECOND REGENERATIVE FURNACE DURIN THE PREHEAT PHASE THEREOF; (E) WITHDRAWING PRODUCT OF COMBUSTION FROM THE REGENERATIVE FURNACE OF STEP (D); (F) ADMIXING THE PRODUCTS OF COMBUSTION OF STEP (E) WITH A COMBUSTION SUPPORTING MEDIUM IN SAID COMBUSTION CHAMBER; AND
Claim 2
Independent Claim
125 words
A METHOD FOR IMPROVING THE THERMAL EFFICIENTY OF A REGENERATIVE FURNACE SYSTEM FOR THE PYROLISIS OF A HYDROCARBON FEED AND INCLUDING A PAIR OF REGENRATIVE FURNACES HAVING A PYROLYSIS AND PREHEAT PHASE WHICH COMPRISES: (A) PREHEATING SAID HYDROCARBON FEED BY INDIRECT HEAT EXCHANGE IN A COMBUSTION CHAMBER; (B) INTRODUCING SAID PREHEATED HYDROCARBON FEED INTO A REGENERATIVE FURNACE DURING THE PYROLYSIS PHASE; (C) WITHDRAWING PYROLYSIS GASES FROM THE REGENERATIVE FURNACE OF STEP (B); (D) SIMULATANEOUSLY WITH STEP (B) INTRODUCING FUEL AND A COMBUSTION SUPPORTING MEDIUM TO A SECOND REGENERATIVE FURNACE DURIN THE PREHEAT PHASE THEREOF; (E) WITHDRAWING PRODUCT OF COMBUSTION FROM THE REGENERATIVE FURNACE OF STEP (D); (F) ADMIXING THE PRODUCTS OF COMBUSTION OF STEP (E) WITH A COMBUSTION SUPPORTING MEDIUM IN SAID COMBUSTION CHAMBER; AND
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |