Alfa Laval Corporate Ab

Claes-Göran Carlsson

Jan Skoog

Leonard Borgström

Torgny Lagerstedt

Hans Moberg

Peter Franzén

Rolf Ridderstråle

Thomas Eliasson

Ingvar Hällgren

Carl Häggmark

Claes Inge

Stefan Szepessy

Jan Berntsson

Göran Ström

Tommy Myrvang

Tommy Alexander Myrvang

Rolf RIDDERSTRÅLE

The invention refers to a plant and a method for separating oil in form of particles and/or mist from a fossil gas mixture for obtaining a separated gas. The plant comprises a centrifugal separator with a stationary casing defining a separation space. The casing permits a pressure of at least 10 bars in the separation space. The centrifugal separator comprises an inlet for the gas mixture, a gas outlet for the separated gas and an oil outlet for discharging separated oil. A separating member for separating the gas mixture comprises a plurality of separating discs and is provided in the separation space. A drive motor is connected to the separating member via a spindle and rotate the separating member about an axis (x) of rotation.

Plant for separating oil from a gas mixture, and a method for separating oil from a gas mixture

A method and a device for separation of a fluid in the liquid state comprising two liquids that are not mutually miscible, with different densities, wherein a first liquid is to be cleansed from a second liquid, whereby the fluid in the liquid state is conducted through a rotor where centrifugal separation of the second liquid from the first liquid takes place, and is then conducted into a tank, with the proportion of the second liquid being reduced to less than 5%, and by conducting the fluid, after centrifugal separation, through a restriction, whereby the pressure of the fluid in the liquid state is reduced, which causes portions of the fluid in the liquid state to evaporate so that further portions of the second liquid escape in the form of a gas which is conducted away, thereby further reducing the proportion of the second liquid in the outgoing fluid in the liquid state.

Method and device for separation of a liquid fluid by centrifugal separation and evaporation

The invention refers to a centrifugal separator for cleaning of a gas containing liquid impurities. The centrifugal separator comprises a stationary casing, which encloses a separation space and has an inner wall surface. A rotating member is provided in the separation space and arranged to rotate in a direction of rotation around an axis (x) of rotation. The rotating member brings the gas to rotation for separation of the liquid impurities from the gas. A gas outlet is provided for discharge of the cleaned gas. A first liquid outlet is provided downstream the rotating member for discharge of separated liquid impurities. The separation space comprises an annular surface which extends between the rotating member and the inner wall surface. The annular surface is configured to transport liquid impurities radially outwardly to the first liquid outlet.

Centrifugal separator

In a centrifugal separator for cleaning a gas containing liquid impurities, a stationary casing encloses a separation space having an inner wall surface. An inlet is provided. A rotating member is provided in the separation space downstream the inlet rotates in a direction of rotation around an axis of rotation. The rotating member brings the gas to rotation in the direction of rotation for separation of liquid impurities from the gas. A gas outlet is provided downstream the rotating member for discharge of the cleaned gas. A first liquid outlet is provided upstream the gas outlet and downstream the rotating member for discharge of separated liquid impurities and comprises an outlet hole. A surrounding ring groove extends outwardly from the inner wall surface in the stationary casing and has a surrounding bottom surface, wherein the outlet hole extends outwardly from the bottom surface.

In a centrifugal separator for cleaning a gas comprising liquid impurities, a stationary casing encloses a separation space having an inner wall surface. The separator comprises an inlet for the gas. A rotating member rotates around and brings the gas to rotation for separation of at least a main part of the liquid impurities from the gas. A gas outlet is provided downstream the rotating member for discharge of the cleaned gas. A first liquid outlet discharges the liquid impurities and comprises an outlet hole. An annular surface extends inwardly from the wall surface and is located downstream the outlet hole. The first liquid outlet comprises an annular shield element extending from the annular surface at a distance and radially inside the outlet hole. The shield element and the annular surface form an annular groove radially inside the outlet hole.

This document describes a device for cleaning of crankcase gases from a combustion engine, and a combustion engine having such a device. An inlet conduit is connected to a crankcase of the combustion engine. A centrifugal separator receives a flow of crankcase gases from the crankcase via the inlet conduit and comprises a routable centrifuge rotor for centrifuging the crankcase gases. A drive device drives the centrifuge rotor. An outlet conduit discharges cleaned crankcase gases from the centrifugal separator. The rotary speed of the drive device, and thus the rotary speed of the centrifuge rotor, is controllable depending on the gas pressure in the crankcase. An export conduit may be connected to the inlet conduit and adapted to enable discharge of a flow of crankcase gases from the crankcase by-passing the centrifugal separator depending on the gas pressure in the crankcase. An import conduit may be connected to the inlet conduit and adapted to enable feeding of a flow of air from the surroundings to the crankcase depending on the gas pressure in the crankcase.

Device for cleaning of crankcase gases

A centrifugal separator for cleaning of a gas from solid and/or liquid particles suspended therein, includes a stationary housing and a rotor arranged therein. The rotor at its one axial end has a central inlet for gas to be cleaned and delimits a central space communicating with the inlet. Around the central space a stack of conical separation discs is arranged in the rotor. These discs form between themselves several through flow passages which at their one ends communicate with the central space in the rotor and at their other ends communicate directly with a receiving chamber surrounding the rotor in the stationary housing. The rotor supports several turbine blades, which are arranged in a ring around the central inlet of the rotor, and at least one nozzle is adapted to direct a gaseous driving fluid towards the turbine blades for the rotor rotation.

Centrifugal separator for cleaning of a fluid

Centrifugal separator for cleaning of a gaseous fluid

In a centrifugal separator, the rotor of which is adapted to be driven by means of a gaseous driving fluid, the rotor itself supports a ring of turbine blades extending around the rotational axis of the rotor. A stationary nozzle is adapted to direct a flow of the driving fluid towards the ring of turbine members. After the driving fluid has passed between the turbine blades and has influenced them for driving of the centrifugal rotor, it enters a reversing chamber formed by a stationary reversing member. In the reversing chamber the driving fluid is caused to change its direction and is then conducted again towards the ring of turbine members in order to be utilized a second time for driving of the centrifugal rotor.

Growing community of inventors

Tullinge, Sweden

Claes-Göran Carlsson