US3936358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the feed rate of quench water to a coking drum in response to the internal pressure therein
Assignee: Great Canadian Oil Sands Ltd
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Filing: 1974-10-17
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Granted: 1976-02-03
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Expires: 1994-10-17
Abstract
Abstract In the delayed coking process wherein hot coke is formed by destructive distillation of a petroleum feed in a coking drum to provide solid coke and distillate petroleum products, the method of regulating the rate of quenching the hot coke after the drum is full and coking has ceased which comprises regulating the rate of feeding quench water to the coking drum in accordance with the internal pressure measured within the drum.
Inventors
- 👤 James E. Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:42
CPC Classifications
C; C10; C10B; C10B39/00; C10B39/04; C10B39/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
In a process for preparing coke from a petroleum feed comprising thermally decomposing said petroleum feed in a coking drum at a temperature in the range of 700°F. to 1000°F. to provide a petroleum distillate product and a residual coke product, cooling the residual coke product with quench water, thereby producing steam which further cools the coke product and which increases the internal pressure in the coking drum the improvement which comprises measuring the internal pressure in the coking drum and in response thereto adjusting the rate of flow of said quench water to maximize said rate of flow while maintaining a substantially constant and safe internal pressure within the coking drum.
Claim 2
Dependent Claim
112 words
In a process for preparing coke from a petroleum feed comprising thermally decomposing said petroleum feed in a coking drum at a temperature in the range of 700°F. to 1000°F. to provide a petroleum distillate product and a residual coke product, cooling the residual coke product with quench water, thereby producing steam which further cools the coke product and which increases the internal pressure in the coking drum the improvement which comprises measuring the internal pressure in the coking drum and in response thereto adjusting the rate of flow of said quench water to maximize said rate of flow while maintaining a substantially constant and safe internal pressure within the coking drum.
Claim 3
Dependent Claim
156 words
In a process for preparing coke from a petroleum feed comprising thermally decomposing said petroleum feed in a coking drum at a temperature in the range of 700°F to 1000°F to provide a petroleum distillate product and a residual coke product, cooling the residual coke with quench water, thereby producing steam which further cools said coke and which increases the internal pressure in the coking drum, the improvement which comprises: a. feeding said quench water to said coking drum containing coke at a temperature above 700°F; b. measuring the internal pressure of said coking drum; and c. regulating the feed rate of the quench water to the coking drum by: i. decreasing the feed rate when the internal pressure of the drum increases and ii. increasing the feed rate when the internal pressure of the drum decreases so as to provide a substantially constant and safe internal pressure in said coking drum during the quenching process.
Claim 4
Dependent Claim
156 words
In a process for preparing coke from a petroleum feed comprising thermally decomposing said petroleum feed in a coking drum at a temperature in the range of 700°F to 1000°F to provide a petroleum distillate product and a residual coke product, cooling the residual coke with quench water, thereby producing steam which further cools said coke and which increases the internal pressure in the coking drum, the improvement which comprises: a. feeding said quench water to said coking drum containing coke at a temperature above 700°F; b. measuring the internal pressure of said coking drum; and c. regulating the feed rate of the quench water to the coking drum by: i. decreasing the feed rate when the internal pressure of the drum increases and ii. increasing the feed rate when the internal pressure of the drum decreases so as to provide a substantially constant and safe internal pressure in said coking drum during the quenching process.
References Cited (Backward Citations)
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US2176838A
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US2331248A
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US2725347A
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Cited
US3573194A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |