A centrifugal separator apparatus for separating components of a fluid stream; the apparatus comprising a support structure and a centrifugal separator unit rotatably mounted on the support structure so as to be rotatable about a rotational axis extending through the centrifugal separator unit; a drive element for driving rotation of the centrifugal separator unit; wherein the centrifugal separator unit comprises a centrifugal separation chamber having an inlet which is connected or connectable to a source of fluid requiring separation, a first outlet for collecting a higher density component of the fluid stream, and a second outlet for collecting a lower density component of the fluid stream; the first outlet being connected or connectable to a first collector for collecting the higher density component and the second outlet being connected or connectable to a second collector for collecting the lower density component; the centrifugal separation chamber comprising a curved or inclined guide surface for guiding flow of the fluid from the inlet in a radially outward direction; wherein the centrifugal separator unit is provided with a wall member which is axially movable to provide a selected degree of occlusion of the first outlet and thereby control flow of the higher density component through the first outlet.

A method and a system for purification of contaminated oil. The method comprising providing contaminated oil into a disc stack centrifugal separator (3). The disc stack centrifugal separator comprises a light phase outlet chamber (33) and/or a heavy phase outlet chamber (31) in which a fluid level can be controlled. Separating the contaminated oil in the disc stack centrifugal separator (3) into a light phase and a heavy phase. Measuring one or more properties in a light phase retrieved from the disc stack centrifugal separator (3), wherein said one or more properties comprise one or more of a density, a viscosity, an amount of heavy phase content and a flow rate of the light phase. Controlling a backpressure provided to a heavy phase outlet (5b) and/or a light phase outlet (5a) of the disc stack centrifugal separator (3) and hereby controlling a fluid level in the heavy phase outlet chamber (31) and/or light phase outlet chamber (33), said controlling being dependent on at least one value of said one or more measured properties.

A method and a system for purification of contaminated oil. The method comprising providing contaminated oil into a disc stack centrifugal separator (3). The disc stack centrifugal separator comprises a light phase outlet chamber (33) and/or a heavy phase outlet chamber (31) in which a fluid level can be controlled. Separating the contaminated oil in the disc stack centrifugal separator (3) into a light phase and a heavy phase. Measuring one or more properties in a light phase retrieved from the disc stack centrifugal separator (3), wherein said one or more properties comprise one or more of a density, a viscosity, an amount of heavy phase content and a flow rate of the light phase. Controlling a backpressure provided to a heavy phase outlet (5b) and/or a light phase outlet (5a) of the disc stack centrifugal separator (3) and hereby controlling a fluid level in the heavy phase outlet chamber (31) and/or light phase outlet chamber (33), said controlling being dependent on at least one value of said one or more measured properties.

The present invention related to plate type rotational separator, comprising: a carrier (110) that is rotatable around an axial axis thereof; and a plurality of plates (121) extending in an axial direction of, and in a radial outward direction relative to, the axial axis of the carrier, wherein each of the plurality of plates (121) comprises at least one support (122) extending transverse to a surface of the plate and in a circumferential direction relative to the axial axis of the carrier, to thereby provide circumferential support for said plate when the support of said plate is supported on an adjacent plate of the plurality of plates during rotation of the carrier.

A flow element, for a separation device, of simple construction and stably connectable to similarly constructed flow elements, includes a disc-shaped base body including a first side and a second side opposite the first side, wherein the first and/or second side includes a plurality of channels through which, in the mounted condition of the flow element in the separation device, a fluid is guidable outwards from a central opening in the base body, which is arranged centrally in the disc-shaped base body, or from the outside towards the centrally arranged central opening, wherein the base body includes a plurality of receiving portions at least on the first side and a plurality of projections at least on the second side, wherein, in the mounted condition of the flow element, the projections are engageable with the receiving portions of a further, similarly constructed flow element that is placed on the flow element.

A flow element, for a separation device, of simple construction and stably connectable to similarly constructed flow elements, includes a disc-shaped base body including a first side and a second side opposite the first side, wherein the first and/or second side includes a plurality of channels through which, in the mounted condition of the flow element in the separation device, a fluid is guidable outwards from a central opening in the base body, which is arranged centrally in the disc-shaped base body, or from the outside towards the centrally arranged central opening, wherein the base body includes a plurality of receiving portions at least on the first side and a plurality of projections at least on the second side, wherein, in the mounted condition of the flow element, the projections are engageable with the receiving portions of a further, similarly constructed flow element that is placed on the flow element.

A hybrid scavenger operates downstream of a separator such as a gunbarrel separator for petroleum production. The separator may be overdriven to maximize use of a permitted reinjection rate. The hybrid scavenger then extracts water from the oil and oil from the water without having to treat the entire stream of incoming production fluids.

A hybrid scavenger operates downstream of a separator such as a gunbarrel separator for petroleum production. The separator may be overdriven to maximize use of a permitted reinjection rate. The hybrid scavenger then extracts water from the oil and oil from the water without having to treat the entire stream of incoming production fluids.

A lower partition wall having a through hole vertically penetrates the lower partition wall center. A spindle is inserted into the through hole. The top surface side of the lower partition wall includes a convex portion, a groove, and a drain hole. The convex portion is concentrically disposed at the through hole periphery. The groove extends, from an outer peripheral side of the convex portion, toward the through hole on an inner peripheral side. The drain hole is outside the convex portion, vertically penetrating the lower partition wall. The separated oil circles a top surface of the lower partition wall. The oil flowing to an inner peripheral side of the lower partition wall is guided to the groove and flows into the through hole. The oil flowing to an outer peripheral side of the lower partition wall flows into the drain hole.

A separation rotor having an outer wall defining a separation chamber and an inner annular wall dividing the separation chamber into an inner annular space and an outer annular space. The separation rotor can be rotated to move heavier and/or denser components of the multi-component fluid into the outer annular space. The lighter and/or less dense components of the multi-component fluid can be retained within the inner annular space. The inner annular space and the outer annular space separation rotor can be selectively accessed to withdraw the components retained within the inner annular space and the outer annular spaces.