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US4687585A Expired / Lapsed US ⏱️ 0.0 years remaining

Separation process utilizing centrifugal rotor

Assignee: Imperial Chemical Industries Ltd
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Filing: 1982-12-14
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Granted: 1987-08-18
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Expires: 2002-12-14
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Abstract

Abstract One or more components of a fluid fossil fuel are separated by subjecting the fluid fossil fuel to a centrifugal force in a rotor. A lighter component is withdrawn from adjacent the axis of the rotor and a heavier component is withdrawn from adjacent its periphery. Thus crude oil may be stabilized or dehydrated or natural gas may be dried by this method.

Inventors

  • 👤 Colin Ramshaw

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:07
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/14; C; C10; C10G; C10G33/00; C10G33/06

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 135 words
A process for separating at least one component of a fluid fossil fuel containing a plurality of phases of different densities, which process comprises: charging the fluid fossil fuel to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; rotating said rotor so as to subject said fluid fossil fuel to a centrifugal force such that a more dense phase moves in a generally outward direction with respect to the axis of rotation of the rotor and a less dense phase moves in a generally inward direction with respect to said axis of rotation; and collecting at least one hydrocarbon phase from said rotor.
Claim 2
Dependent Claim 135 words
A process for separating at least one component of a fluid fossil fuel containing a plurality of phases of different densities, which process comprises: charging the fluid fossil fuel to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; rotating said rotor so as to subject said fluid fossil fuel to a centrifugal force such that a more dense phase moves in a generally outward direction with respect to the axis of rotation of the rotor and a less dense phase moves in a generally inward direction with respect to said axis of rotation; and collecting at least one hydrocarbon phase from said rotor.
Claim 3
Dependent Claim 16 words
The process of claim 1, wherein the fluid fossil fuel is crude oil or natural gas.
Claim 4
Dependent Claim 19 words
The process according to claim 1 in which the permeable element has a voidage of more than about 85%.
Claim 5
Dependent Claim 141 words
A process for stablizing a crude oil containing a gaseous phase, which process comprises: charging the crude oil to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; said crude oil being charged to said rotor at a position adjacent to said axis of rotation; rotating said rotor so as to subject said crude oil to a centrifugal force such that a liquid phase moves away from said axis of rotation and a gaseous phase moves towards said axis of rotation; collecting a gaseous phase from said rotor adjacent its axis of rotation; and collecting the stabilized crude oil from a position adjacent the radially outer periphery of said rotor.
Claim 6
Dependent Claim 141 words
A process for stablizing a crude oil containing a gaseous phase, which process comprises: charging the crude oil to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; said crude oil being charged to said rotor at a position adjacent to said axis of rotation; rotating said rotor so as to subject said crude oil to a centrifugal force such that a liquid phase moves away from said axis of rotation and a gaseous phase moves towards said axis of rotation; collecting a gaseous phase from said rotor adjacent its axis of rotation; and collecting the stabilized crude oil from a position adjacent the radially outer periphery of said rotor.
Claim 7
Dependent Claim 150 words
A process for separating an aqueous phase from crude oil, which process comprises: charging the crude oil to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; said crude oil being charged to said rotor at a position intermediate the outer periphery of said rotor and its axis; rotating said rotor so as to subject said crude oil to a centrifugal force such that a denser liquid phase moves towards said outer periphery and a less dense liquid phase moves towards said axis; collecting an aqueous liquid phase from a position adjacent said rotor outer periphery; and collecting crude oil from which some at least of said aqueous phase has been separated from adjacent the axis of said rotor.
Claim 8
Dependent Claim 150 words
A process for separating an aqueous phase from crude oil, which process comprises: charging the crude oil to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; said crude oil being charged to said rotor at a position intermediate the outer periphery of said rotor and its axis; rotating said rotor so as to subject said crude oil to a centrifugal force such that a denser liquid phase moves towards said outer periphery and a less dense liquid phase moves towards said axis; collecting an aqueous liquid phase from a position adjacent said rotor outer periphery; and collecting crude oil from which some at least of said aqueous phase has been separated from adjacent the axis of said rotor.
Claim 9
Dependent Claim 161 words
A process for separating a liquid phase, which phase may be organic or aqueous, from natural gas, which process comprises: charging said natural gas containing said liquid phase to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; said natural gas being charged to the rotor at a position inermediate the outer periphery of said rotor and said axis of rotation; rotating said rotor so as to subject said natural gas to a centrifugal force such that said liquid phase moves towards said outer periphery and a gaseous phase moves towards said axis; collecting a liquid phase from a position adjacent said rotor outer periphery; and collecting a gaseous phase, from which at least a proportion of said liquid phase has been removed from adjacent the axis of said rotor.
Claim 10
Dependent Claim 161 words
A process for separating a liquid phase, which phase may be organic or aqueous, from natural gas, which process comprises: charging said natural gas containing said liquid phase to a rotor which is formed by mounting a permeable element on a rotatable shaft which is coaxial with the axis of the rotor, the permeable element having an interfacial area of more than about 500 meters 2 /meters 3 ; said natural gas being charged to the rotor at a position inermediate the outer periphery of said rotor and said axis of rotation; rotating said rotor so as to subject said natural gas to a centrifugal force such that said liquid phase moves towards said outer periphery and a gaseous phase moves towards said axis; collecting a liquid phase from a position adjacent said rotor outer periphery; and collecting a gaseous phase, from which at least a proportion of said liquid phase has been removed from adjacent the axis of said rotor.

References Cited (Backward Citations)

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US3273325A Cited
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GB1508212A Cited
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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) 1990-08-17 1991-02-16 1991-08-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-08-17 1995-02-16 1995-08-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-08-17 1999-02-16 1999-08-18 $7700.00 Window Closed / Lapsed

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