US3855113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated process combining hydrofining and steam cracking
Assignee: Chevron USA Inc
•
Filing: 1972-12-21
•
Granted: 1974-12-17
•
Expires: 1992-12-21
Abstract
Abstract An integrated process for hydroconverting and steam cracking hydrocarbons is disclosed, comprising hydroconverting (particularly hydrodesulfurizing) a hydrocarbon to produce a hydroconverted hydrocarbon and heat; generating steam, using as part of the energy required the heat produced in the hydroconversion step; and contacting the hydroconverted hydrocarbon and the steam in a steam-cracking zone to form lowsulfur-content products. Alternatively, or in conjunction with the heat from the hydroconversion step, the heat produced in hydroconverting a lighter hydrocarbon fraction can be used in producing the steam.
Inventors
- 👤 G Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:36
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN INTEGRATED PROCESS COMPRISING: A. ATMOSPHERIC DISTILLING A CRUDE OIL TO PRODCE A HEAVY ATMOSPHERIC GAS OIL AND AN ATMOSPHERIC RESIDUUM; B. VACUUM DISTILLING SAID ATMOSPHERIC RESIDUUM TO PRODUCE A VACUUM RESIDUUM AND A VACUUM GAS OIL; C. HYDROFINING SAID VACUUM RESIDUUM IN A FIRST HYDROFINING ZONE TO PRODUCE A HYDROFINED VACUUM RESIDUUM; D. HYDROFINING SAID HEAVY ATMOSPHERIC GAS OIL AND SAID VACUUM GAS OIL IN A SECOND HYDROFINING ZONE TO PRODUCE A HYDROFINED OIL AND HEAT; E. RRECOVERING AT LEAST PART OF THE HEAT PRODUCED IN STEP (D); F. GENERATING SUPERHEATED STEAM, USING THE HEAT RECOVERED IN STEP (E) AS A PORTION OF THE ENERGY REQUIRED TO PRODUCE SAID SUPERHEATED STEAM; AND G. CONTACTING SAID HYDROFINED VACUUM RESIDUUM AND SAID SUPERHEATED STEAM IN A STEAM-CRACKING ZONE TO PRODUCE LOW SULFUR-CONTENT STEAM CRACKED PRODUCTS.
Claim 2
Dependent Claim
134 words
AN INTEGRATED PROCESS COMPRISING: A. ATMOSPHERIC DISTILLING A CRUDE OIL TO PRODCE A HEAVY ATMOSPHERIC GAS OIL AND AN ATMOSPHERIC RESIDUUM; B. VACUUM DISTILLING SAID ATMOSPHERIC RESIDUUM TO PRODUCE A VACUUM RESIDUUM AND A VACUUM GAS OIL; C. HYDROFINING SAID VACUUM RESIDUUM IN A FIRST HYDROFINING ZONE TO PRODUCE A HYDROFINED VACUUM RESIDUUM; D. HYDROFINING SAID HEAVY ATMOSPHERIC GAS OIL AND SAID VACUUM GAS OIL IN A SECOND HYDROFINING ZONE TO PRODUCE A HYDROFINED OIL AND HEAT; E. RRECOVERING AT LEAST PART OF THE HEAT PRODUCED IN STEP (D); F. GENERATING SUPERHEATED STEAM, USING THE HEAT RECOVERED IN STEP (E) AS A PORTION OF THE ENERGY REQUIRED TO PRODUCE SAID SUPERHEATED STEAM; AND G. CONTACTING SAID HYDROFINED VACUUM RESIDUUM AND SAID SUPERHEATED STEAM IN A STEAM-CRACKING ZONE TO PRODUCE LOW SULFUR-CONTENT STEAM CRACKED PRODUCTS.
References Cited (Backward Citations)
US1616515A
Cited
US1884418A
Cited
US3329605A
Cited
US3429803A
Cited
US3511771A
Cited
US3551106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |