EP0068809A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cyclone separator
Assignee: BWN Vortoil Rights Co Pty Ltd
•
Filing: 1982-06-23
•
Granted: —
•
Expires: 2002-06-23
Abstract
Abstract A cyclone separator for removing oil from seawater, the oil being up to a few percent of the volume, is proportioned as follows, symbols having the meaning shown on the Figure, a notable feature being the smallness of do, the overflow: 10 ≤ 1 2 /d 2 ≤ 25; 0.04 < 4A i /πd 2 t ≤ 0.10; d o /d 2 < 0.1; d 1 > d 2 : d 2 > d 3 . The half-angle of the convergence of the taper T 2 is from 20' to 2°.
Inventors
- 👤 Derek Alan Colman
- 👤 Martin Thomas Thew
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 21:32
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B04C5/12; B04C5/13
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
193 words
A cyclone separator having a generally cylindrical first portion with a plurality of substantially identical substantially equally circumferentially spaced tangentially directed feeds (or groups of feeds), and, adjacent to the first portion and substantially coaxial therewith, a tapered (and optionally partially cyclindrical) second portion open at its far end, the first portion having an axial overflow outlet opposite the second portion, the second portion comprising a flow-smoothing taper converging towards its said far end, where it leads into a substantially coaxial generally cylindrical third portion, the internal diameter of the axial overflow outlet being d 0 , of the first portion being d l , of the divergent end of the taper comprised in the second portion being d , of the convergent end of the taper being d 39 of the third portion being also d 3 , the internal length of the first portion being 1 1 and of the second portion being 1 2 , the total cross-sectional area of all the feeds measured at the points of entry normal to the inlet flow being A., the shape of the separator being governed by the following relationships:- characterised in that
Claim 2
Dependent Claim
193 words
A cyclone separator having a generally cylindrical first portion with a plurality of substantially identical substantially equally circumferentially spaced tangentially directed feeds (or groups of feeds), and, adjacent to the first portion and substantially coaxial therewith, a tapered (and optionally partially cyclindrical) second portion open at its far end, the first portion having an axial overflow outlet opposite the second portion, the second portion comprising a flow-smoothing taper converging towards its said far end, where it leads into a substantially coaxial generally cylindrical third portion, the internal diameter of the axial overflow outlet being d 0 , of the first portion being d l , of the divergent end of the taper comprised in the second portion being d , of the convergent end of the taper being d 39 of the third portion being also d 3 , the internal length of the first portion being 1 1 and of the second portion being 1 2 , the total cross-sectional area of all the feeds measured at the points of entry normal to the inlet flow being A., the shape of the separator being governed by the following relationships:- characterised in that
Claim 3
Dependent Claim
20 words
A cyclone separator according to Claim 1, wherein the half-angle of the convergence of the taper is 20' to 2°.
Claim 4
Dependent Claim
14 words
A cyclone separator according to Claim 2, wherein said half-angle is up to 1°.
Claim 5
Dependent Claim
19 words
A cyclone separator according to any preceding claim, wherein d 3 / d 2 is from 0.4 to 0.7.
Claim 6
Dependent Claim
28 words
A cyclone separator according to any preceding claim, wherein the internal length of the third portion is 1 3 and 1 3 /d 3 is at least 15.
Claim 7
Dependent Claim
18 words
A cyclone separator according to any preceding claim, wherein 1 1 /d 1 is from 0.5 to 5.
Claim 8
Dependent Claim
17 words
A cyclone separator according to Claim 6, wherein 1 1 /d 1 is from 1 to 4.
Claim 9
Dependent Claim
18 words
A cyclone separator according to any preceding claim, wherein d 1 /d 2 is from 1.5 to 3.
Claim 10
Dependent Claim
17 words
A cyclone separator according to any preceding claim, wherein d 0 /d 2 is at least 0.008.
Claim 11
Dependent Claim
17 words
A cyclone separator according to Claim 9, wherein d 0 /d 2 is from 0.01 to 0,08.
Claim 12
Dependent Claim
17 words
A cyclone separator according to Claim 10, wherein d 0 /d 2 is from 0.02 to 0.06.
Claim 13
Dependent Claim
22 words
A cyclone separator according to any preceding claim, further comprising, interposed between the first portion and the second portion, a flow-smoothing taper.
Claim 14
Dependent Claim
39 words
A cyclone separator according to Claim 12, wherein the taper of Claim 12 is in the form of a frustoconical internal surface whose larger-diameter end has a diameter d and whose smaller-diameter end has a diameter d 2 .
Claim 15
Dependent Claim
19 words
A cyclone separator according to Claim 13, wherein the conicity (half-angle) of the frustoconical taper is at least 10°.
Claim 16
Dependent Claim
18 words
A cyclone separator according to any preceding claim, wherein d 2 is from 10 mm to 100 mm.
Claim 17
Independent Claim
53 words
A method of removing a lighter phase from a larger volume of a denser phase, comprising applying the phases to the feeds of a cyclone separator according to any preceding claim, the phases being at a higher pressure than in the axial overflow outlet and in the far end of the third portion.
Claim 18
Dependent Claim
31 words
A method according to Claim 16, wherein the feed rate (in m 3 /s) of the phases to the cyclone separator exceeds 6.8d 2.8 2 (where d 2 is in metres).
Claim 19
Dependent Claim
14 words
A method according to Claim 16 or 17, wherein the lighter phase is gas.
Claim 20
Dependent Claim
20 words
A method according to Claim 16 or 17, wherein the lighter phase is oil and the denser phase is water.
Claim 21
Dependent Claim
36 words
A method according to Claim 16, 17 or 19, further comprising, as a preliminary step, eliminating gas from the phases such that in the inlet material the volume of any gas is not more than ½%.
References Cited (Backward Citations)
US4237006A
Cited
GB1583730A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.