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US4964994A
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Hydrocyclone separator
Assignee: BP Corp North America Inc
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Filing: 1989-03-21
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Granted: 1990-10-23
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Expires: 2009-03-21
Abstract
Abstract A hydrocyclone separator for separating oil from water includes a substantially cylindrical first portion with a central overflow outlet and at least one tangential flow inlet, an essentially single angled conical second portion, and a substantially cylindrical third portion, with a central underflow outlet. The hydrocyclone separator is made in accordance with the following relationships: do<du<Dc 0.1≦ di/Dc≦ 0.4 0.01≦ do/Dc≦ 0.06 0≦ Lc/Dc≅ 2.0 3°≦α≦ 30° 0.1≦ du/Dc≦ 0.5 9≦ Ls/Dc.
Inventors
- 👤 William D. Wakley
- 👤 J. Robert Worrell
- 👤 Grant A. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:42
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B01; B01D; B01D17/00; B01D17/02; B01D17/0217
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
190 words
A hydrocyclone separator consisting essentially of: a substantially cylindrical first portion having a central overflow outlet at a first end and having at least one tangential flow inlet adjacent the first end, and directly connected at a second end to a conical second portion; the conical second portion having essentially a single cone angle and directly connected at an end opposite the cylindrical first portion to a cylindrical third portion; the cylindrical third portion having a central overflow outlet at an end opposite the conical second portion; the internal diameter of the cylindrical first portion being Dc; the diameter of a circle having the same area as the least one tangential flow inlet, regardless of shape, being di; the internal diameter of the central overflow outlet being do, the internal length of the cylindrical first portion being Lc, the cone angle of the conical second portion being α, the internal length of the cylindrical third portion being Ls, and the internal diameter of the underflow outlet being du; and the configuration of the hydrocyclone separator being in accordance with the following relationships: do<du<Dc 0.1<di/Dc×0.04 0.01≦do/Dc≦0.06 ≦ Lc/Dc≅2.0 3°≦α≦30° 0.1≦du/Dc≦0.5 9≦Ls/Dc.
Claim 2
Dependent Claim
190 words
A hydrocyclone separator consisting essentially of: a substantially cylindrical first portion having a central overflow outlet at a first end and having at least one tangential flow inlet adjacent the first end, and directly connected at a second end to a conical second portion; the conical second portion having essentially a single cone angle and directly connected at an end opposite the cylindrical first portion to a cylindrical third portion; the cylindrical third portion having a central overflow outlet at an end opposite the conical second portion; the internal diameter of the cylindrical first portion being Dc; the diameter of a circle having the same area as the least one tangential flow inlet, regardless of shape, being di; the internal diameter of the central overflow outlet being do, the internal length of the cylindrical first portion being Lc, the cone angle of the conical second portion being α, the internal length of the cylindrical third portion being Ls, and the internal diameter of the underflow outlet being du; and the configuration of the hydrocyclone separator being in accordance with the following relationships: do<du<Dc 0.1<di/Dc×0.04 0.01≦do/Dc≦0.06 ≦ Lc/Dc≅2.0 3°≦α≦30° 0.1≦du/Dc≦0.5 9≦Ls/Dc.
Claim 3
Dependent Claim
8 words
A hydrocyclone separator of claim 1 wherein 0.23≦di/Dc≦35.
Claim 4
Dependent Claim
8 words
A hydrocyclone separator of claim 2 wherein 0.24≦di/Dc≦0.28.
Claim 5
Dependent Claim
8 words
A hydrocyclone separator of claim 1 wherein 0.014≦do≦0.05.
Claim 6
Dependent Claim
8 words
A hydrocyclone separator of claim 1 wherein α≅6°.
Claim 7
Dependent Claim
8 words
A hydrocyclone separator of claim 1 wherein 0.21≦du/Dc≦0.42.
Claim 8
Dependent Claim
15 words
A hydrocyclone separator of claim 1 wherein Ls/Dc is between about 9 and about 27.
Claim 9
Dependent Claim
15 words
A hydrocyclone separator of claim 7 wherein Ls/Dc is between about 12 and about 24.
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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |