Alfa-laval Separation Ab

Alfa Laval Corporation Ab

3nine Ab

Alfa Laval Corporate Ab

Alfa-lavel Separation Ab

Peter Franzen

Claes Inge

Torgny Lagerstedt

Hans Moberg

Leonard Borgstrom

Claes-Goran Carlsson

Stefan Szepessy

Olle Nangbo

Patrik Brehmer

Claes Goran Carlsson

Mikael Sundstrom

Olle Nabo

Olev Maehans

Martin Sandgren

Claes-Goeran Carlsson

Leonard Borgstroem

Sven-Olof Naebo

Francesco Zitarosa

Christoph Erdmann

Methods and installations for treatment of exhaust gases from marine diesel engines, in particular for reduction of the sulphur oxides (SO) in such gases, where the reaction products resulting from the mixing of an alkaline aerosol with the exhaust gases are separated-out by means of one or more rotating centrifugal separator rotors () of the kind comprising a stack of narrowly spaced separation discs ().

Method and installation for the reduction of sulphur oxides in exhaust gas from marine diesel engines

A rotor-type apparatus for centrifugal cleaning of crankcase gases from a combustion engine. The rotor is hydraulically driven by pressurized oil by means of a turbine wheel located in an oil collection chamber. A pressure equalizing and gas discharging conduit, which extends into the collection chamber and has an upper aperture located above a liquid level of the oil in the collection chamber during the operation, is connected to an outlet conduit for the propellant oil from the collection chamber.

Apparatus for cleaning crankcase gases

In order to prevent air from being sucked into the separation chamber () of a counter-current type of centrifugal separator through the liquid outlet () thereof during the normal operation the separator a liquid trap in form of a well () is provided in the bottom of the separator housing (). An outlet conduit () opens into the lower part of the well (), wherein the well (), at least in its upper part, has a substantially larger cross-sectional area than that of the outlet conduit ().

Apparatus for centrifugal separation of liquid particles from a gas

A centrifugal separator device for concurrent separation of solid and/or liquid particles suspended in a gaseous media includes a rotor having a multiplicity of sedimentation members and which is mounted rotatably in a surrounding housing. An intake is provided for the gaseous medium to be cleaned, which leads to a central inlet shaft of the rotor. The housing has an outlet for cleaned gas, which has been freed of solid and/or liquid particles on passage through the sedimentation members in the rotor, and an outlet for the solid and/or liquid particles, which have been deposited on the sedimentation members and then transferred to a side wall of the housing by a centrifugal force. A nozzle is arranged upstream of the sedimentation members in order to supply a liquid to the sedimentation members.

Device and method for cleaning a centrifugal separator

The invention relates to devices and methods for cleaning centrifugal separators for concurrent and countercurrent separation of solid and/or liquid particles suspended in gaseous media. The device comprises a rotor () which is provided with a multiplicity of sedimentation members () and which is mounted rotatably in a surrounding housing (). In concurrent separation, a flushing nozzle () is arranged upstream of the sedimentation members () in order to supply a cleaning liquid for flushing the sedimentation members clean. In countercurrent separation, the flushing nozzle is arranged upstream and/or downstream of the sedimentation members in order to supply cleaning liquid from outside and/or from inside the rotor for flushing the sedimentation members clean.

A centrifugal separator has a centrifugal rotor that is rotatable about a vertical axis and has both a rotor body for separation of two liquids, having different densities, and a pumping member that is designed to pump via the outside of a conical body a mixture of said two liquids into the rotor body from a surface layer of a liquid body situated below the rotor body.

Centrifugal separator with conical pump inlet

In an apparatus for simultaneous cleaning of a liquid and a gas a centrifugal rotor for cleaning of the liquid is connected with a device for cleaning of the gas. The centrifugal rotor is contained in a stationary housing, and this housing delimits a supply passage for gas to be cleaned and on its way to the cleaning device. The gas cleaning device comprises a stack of conical separation discs surrounding a gas inlet chamber and surrounded by a receiving chamber that is delimited by a surrounding stationary casing.

Apparatus for simultaneous cleaning of a liquid and a gas

The invention is an entrainment device for a centrifugal separator. The entrainment device is comprised of two axial delimiting surfaces. One axial delimiting surface turns axially towards and the other turns axially away form an inlet chamber outlet of the separator. The entrainment device permits extended periods of operation without clogging of inlet chamber.

Entraining device for a centrifugal separator

A sealing device (4) is provided for sealing between a first member (1) and a second member (2) and comprises a first sealing element (10), provided on the first member and extending thereabout towards the second member, and a second sealing element (20), provided on the second member and extending towards the first member without direct contact with the first sealing element (10). The first sealing element (10) comprises a first flange member (12) extending towards the first member (1) forming a first chamber (13) and the second sealing element (20) comprises a second flange member (22) extending towards the second member (2) and forming a second chamber (23). The flange members (12, 22) are provided overlapping each other in such a manner that the first flange member (12) extends in the second chamber (23) and the second flange member (22) extends in the first chamber (13).

Sealing device

Method and a device for internal cleaning of a centrifugal rotor, and a

Outlet device and a centrifugal separator provided with such an outlet

Centrifugal separator

A centrifugal separator to clean a liquid from a substance having a lower density than the liquid comprises a rotor forming a separation chamber (6), in which a stack of conical separation discs (15) is arranged. Liquid and substance dispersed therein flow radially outwards in interspaces between the discs. To increase the separation capability upon a high flow through the separator, the separation discs (15) have a radial inner zone (29a), which has no obstacles for primary flow in the circumferential direction and a radial outer zone (28a), which has so many equally around the rotational axis distributed elongated and through the outer zone (28a) extending obstacles (27a) for liquid flow in circumferential direction that the primary flow in this zone (28a) takes place radially outwards between the obstacles (27a). The obstacles (27a) have such a length and such a direction in relation to the primary flow that the liquid flow in a layer closest to a layer of substance so influences the layer of substance that separated substance is accumulated on and flows radially inwards along the flow obstacle (27a) ahead.

In order to free a liquid form a substance dispersed therein and having a larger density than the liquid a centrifuge rotor is used having a stack of conical separation discs. Elongated spacing members (11a, 11b) in the spaces between the separation discs are formed such that the liquid flow in the disc interspaces is conducted in a certain way. Thus, the main part of the liquid is conducted in flow paths (12a, 12b), each of which has a direction with one radial component and one component turned against the rotational direction of the rotor.

Growing community of inventors

Tullinge, Sweden

Peter Franzen