US3210271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation with side stripping
Assignee: Shell USA Inc
•
Filing: 1962-02-19
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Granted: 1965-10-05
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 James A Byerly
- 👤 Egon L Doering
- 👤 Bron B Geye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:55
CPC Classifications
C; C10; C10G; C10G7/00; B; B01; B01D; B01D3/00; B01D3/14; B01D3/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A METHOD OF FRACTIONALLY DISTILLING A MULTI-COMPONENT HYDROCARBON OIL WHICH COPRISES THE STEPS OF: (A) SUBJECTING SAID OIL T FRACTIONAL DISTILLATION IN A MAIN VERTICAL DISTILLATION ZONE, (B) WITHDRAWING TOP AND BOTTOM STREAMS FROM DIFFERENT LEVELS OF SAID ZONE AND AN INTERMEDIATE STREAM FROM AN INTERMEDIATE LEVEL. (C) TRANSFERRING AT LEAST ONE OF THE TWO LATTER STREAMS TO AN AUXILIARY STRIPPING ZONE, (D) ADMITTING STEAM TO THE BOTTOM OF SAID STRIPPING ZONE AND SEPARATING THE TRANSFERRED STREAM INTO AT LEAST A VAPOR PORTION AND A RESIDUAL LIQUID PORTION, (E) WITHDRAWING SAID RESIDUAL LIQUID PORTION FROM THE STRIPING ZONE, (F) COOLING SAID VAPOR PORTION AND THEREBY CONDENSING THE MAJOR PART OF THE OIL CONSTITUENTS OF THE VAPOR TO FORM A CONDENSATE, (G) WITHDRAWING CONDENSATE FORMED IN STEP (F) FROM THE STRIPING ZONE SEPARATELY FROM SAID RESIDUAL PORTION, RETURNING A PART OF THE WITHDRAWN CONDENSATE TO THE MAIN DISTILLATION ZONE, COOLING ANOTHER PART THEREOF TO A LOWER TEMPERATURE AND MIXING THE LATTER COOLED PART WITH THE VAPOR PORTION IN STEP (F) TO EFFECT COOLING OF THE SAID VAPOR PORTION, AND (H) WITHDRAWING THE UNCONDENSED PART OF SAID VAPOR PORTION FROM THE STRIPING ZONE WITHOUT RETURN THEREOF TO THE MAIN DISTILLATION ZONE.
Claim 2
Independent Claim
199 words
A METHOD OF FRACTIONALLY DISTILLING A MULTI-COMPONENT HYDROCARBON OIL WHICH COPRISES THE STEPS OF: (A) SUBJECTING SAID OIL T FRACTIONAL DISTILLATION IN A MAIN VERTICAL DISTILLATION ZONE, (B) WITHDRAWING TOP AND BOTTOM STREAMS FROM DIFFERENT LEVELS OF SAID ZONE AND AN INTERMEDIATE STREAM FROM AN INTERMEDIATE LEVEL. (C) TRANSFERRING AT LEAST ONE OF THE TWO LATTER STREAMS TO AN AUXILIARY STRIPPING ZONE, (D) ADMITTING STEAM TO THE BOTTOM OF SAID STRIPPING ZONE AND SEPARATING THE TRANSFERRED STREAM INTO AT LEAST A VAPOR PORTION AND A RESIDUAL LIQUID PORTION, (E) WITHDRAWING SAID RESIDUAL LIQUID PORTION FROM THE STRIPING ZONE, (F) COOLING SAID VAPOR PORTION AND THEREBY CONDENSING THE MAJOR PART OF THE OIL CONSTITUENTS OF THE VAPOR TO FORM A CONDENSATE, (G) WITHDRAWING CONDENSATE FORMED IN STEP (F) FROM THE STRIPING ZONE SEPARATELY FROM SAID RESIDUAL PORTION, RETURNING A PART OF THE WITHDRAWN CONDENSATE TO THE MAIN DISTILLATION ZONE, COOLING ANOTHER PART THEREOF TO A LOWER TEMPERATURE AND MIXING THE LATTER COOLED PART WITH THE VAPOR PORTION IN STEP (F) TO EFFECT COOLING OF THE SAID VAPOR PORTION, AND (H) WITHDRAWING THE UNCONDENSED PART OF SAID VAPOR PORTION FROM THE STRIPING ZONE WITHOUT RETURN THEREOF TO THE MAIN DISTILLATION ZONE.
References Cited (Backward Citations)
US2029528A
Cited
GB386075A
Cited
US2224986A
Cited
US2462013A
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US2476010A
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US2540379A
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US2534870A
Cited
US2736688A
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US2911452A
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US2952616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |