Patent US3804261A successfully refreshed from Google Patents.
US3804261A
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US
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Apparatus for gravity separation of immiscible fluids
Assignee: PINEVILLE KRAFT CORP
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Filing: 1972-08-28
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Granted: 1974-04-16
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Expires: 1992-08-28
Abstract
Abstract Tall oil soap is separated from black liquor used in the Kraft production process by uniformly introducing the mixed liquids into the bottom of a large outer container to flow upwardly and having the heavier black liquor go through a zone of zero upward velocity and flow downward for discharge from the bottom of an inner baffle. This arrangement prevents short circuiting of the incoming mixed liquids to the black liquor outlet. The tall oil soap will accummulate at the top of the containing vessel where it is skimmed in a conventional manner.
Inventors
- 👤 J Whelan
- 👤 J Henry
- 👤 H White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:20
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/0042; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
204 words
Apparatus for gravity separation of immiscible liquids having different specific gravities, the apparatus comprising: a larger outer container for holding liquid to be separated, a smaller inner baffle container positioned within the outer container to leave a space therebetween, the inner container having a height less than a normal liquid level in the outer container and the inner container being open at the top for free fluid communication with liquid in the outer container, a header extending substantially around the inner baffle container in the space between the two containers, the header having regularly spaced openiNgs for uniformly distributing a mixture of immiscible liquids of different specific gravities in the lower portion of the outer container below the level of the inner container and in the space between the containers, means for withdrawing a separated heavier liquid from the bottom of the inner container, skimmer means at the top of the larger outer container above the liquid level of the inner container for skimming the lighter material which separates from the heavier material, and a fill line leading to the inner container for filling the inner container at the same time the space between the containers is filled during start up to relieve pressure.
Claim 2
Dependent Claim
204 words
Apparatus for gravity separation of immiscible liquids having different specific gravities, the apparatus comprising: a larger outer container for holding liquid to be separated, a smaller inner baffle container positioned within the outer container to leave a space therebetween, the inner container having a height less than a normal liquid level in the outer container and the inner container being open at the top for free fluid communication with liquid in the outer container, a header extending substantially around the inner baffle container in the space between the two containers, the header having regularly spaced openiNgs for uniformly distributing a mixture of immiscible liquids of different specific gravities in the lower portion of the outer container below the level of the inner container and in the space between the containers, means for withdrawing a separated heavier liquid from the bottom of the inner container, skimmer means at the top of the larger outer container above the liquid level of the inner container for skimming the lighter material which separates from the heavier material, and a fill line leading to the inner container for filling the inner container at the same time the space between the containers is filled during start up to relieve pressure.
Claim 3
Dependent Claim
14 words
An apparatus as in claim 1 wherein the containers are both cylindrical and concentric.
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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |