Patent US3962098A successfully refreshed from Google Patents.
US3962098A
Expired / Lapsed
US
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Gravity settling
Assignee: Lummus Technology LLC
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Filing: 1974-09-13
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Granted: 1976-06-08
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Expires: 1994-09-13
Abstract
Abstract Gravity settler comprised of a conical vessel positioned in the lower portion and surrounded by an ellipsoidal (preferably a sphere) housing whereby the settler has a spherically shaped upper portion and conically shaped lower portion. The settler is particularly suited for separating solids from a coal liquefaction product.
Inventors
- 👤 Morgan C. Sze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:08
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; C; C10; C10G; C10G1/00; C10G1/04; C10G1/045
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
A gravity settler for separating solids from a coal liquefaction product at an elevated pressure, comprising: an ellipsoidally shaped housing; a conically shaped vessel positioned in the lower portion of the ellipsoidally shaped housing and surrounded thereby to define a gravity settling vessel having a conically shaped lower interior portion and a frusto-ellipsoidally shaped upper portion, said conically shaped vessel being sloped with respect to horizontal at an angle of at least 45° and less than 70°; inlet means for downwardly introducing solids and liquid into an intermediate axial portion of the conically shaped vessel in the area of maximum cross-section; first outlet means for withdrawing essentially solids free overflow from substantially the uppermost portion of the upper frust o-ellipsoidally shaped interior portion of the gravity settler; and second outlet means for withdrawing solids containing underflow from the lower conically shaped interior portion of the gravity settler.
Claim 2
Dependent Claim
147 words
A gravity settler for separating solids from a coal liquefaction product at an elevated pressure, comprising: an ellipsoidally shaped housing; a conically shaped vessel positioned in the lower portion of the ellipsoidally shaped housing and surrounded thereby to define a gravity settling vessel having a conically shaped lower interior portion and a frusto-ellipsoidally shaped upper portion, said conically shaped vessel being sloped with respect to horizontal at an angle of at least 45° and less than 70°; inlet means for downwardly introducing solids and liquid into an intermediate axial portion of the conically shaped vessel in the area of maximum cross-section; first outlet means for withdrawing essentially solids free overflow from substantially the uppermost portion of the upper frust o-ellipsoidally shaped interior portion of the gravity settler; and second outlet means for withdrawing solids containing underflow from the lower conically shaped interior portion of the gravity settler.
Claim 3
Dependent Claim
18 words
The gravity settler of claim 1 wherein the ellipsoidally shaped housing is in the form of a sphere.
Claim 4
Dependent Claim
26 words
The gravity settler of claim 2 wherein the base of the conical vessel is positioned in a horizontal plane through the center of the spherical housing.
Claim 5
Dependent Claim
27 words
The gravity settler of claim 3 wherein the wall of the conically shaped vessel is sloped with respect to horizontal at an angle from 55° to 70°.
References Cited (Backward Citations)
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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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |