Alfa Laval

Lund, Sweden

Alfa Laval

Lund, Sweden

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Patent
Alfa Laval | Date: 2017-03-29

A centrifugal separator (1) for separation of liquid particles from a gas stream, comprising a stationary frame (2), a gas inlet (3) and a gas outlet (4). The frame comprises a tubular element (24) defining a rotor space inside itself and a liquid transportation space (39) outside the tubular element. A centrifugal rotor (5) is arranged in the rotor space and rotatably supported in the frame around a rotational axis (x) and comprising a separation means (6). A stationary device (10) is configured to bring the gas stream in rotation, thereby bringing the rotor (5) into rotation. At least one opening (40, 41) is provided in the tubular element, between the rotor space and the liquid transportation space, for conducting liquid separated from the gas stream from the rotor space to the liquid transportation space.


Patent
Alfa Laval | Date: 2017-03-22

Herein a centrifugal separator configured for cleaning of crankcase gases from an internal combustion engine is disclosed. The centrifugal separator comprises a rotor rotatably arranged inside a stationary housing. The stationary housing comprises an inlet for crankcase gases, a gas outlet, and a liquid outlet. The rotor comprises a stack of separation discs (5), each separation disc (5) of the stack of separation discs (5) having a centre axis (x), an inner surface (22), and an outer surface (24). A circumferential inner end surface (26) extends between the inner surface (22) and the outer surface (24). The circumferential inner end surface (26) of at least one separation disc (5) of the stack of separation discs (5) comprises a substantially flat first surface portion (28) extending at an angle (a) of at least 20 degrees to the centre axis (x).


Patent
Alfa Laval | Date: 2017-06-14

A plate heat exchanger comprising a casing (2) that has a shell (3), a top cover (4) and a bottom cover (5) that are joined to form an enclosure (14), a stack (20) of heat transfer plates is arranged within the enclosure (14), the heat transfer plates having openings in form of through holes in the heat transfer plates, the openings forming a space (24) in the plate stack (20) in which a first fluid (F1) flows, wherein a reinforcement element (50) extends through the openings in the heat transfer plates and is connected to each of the top cover (4) and the bottom cover (5) for supporting the covers (4, 5) when the plate heat exchanger is subjected to a pressure from any of the first fluid (F1) and a second fluid (F2) that flows through the plate heat exchanger.


Patent
Alfa Laval | Date: 2017-06-21

A hermetic centrifugal separator comprises a rotor including a separator bowl (19) defining a separation chamber (20), an inlet channel (2) for a mixture of components to be separated, a first outlet channel (4) for receiving at least one separated light component, and a second outlet channel (5) for receiving at least one separated heavy component, characterized in that said second outlet channel (5) is connected to heavy component outlet pipes (21) where said pipes (21) have inlet openings inside said separation chamber (20) close to the interior wall of the separator bowl (19). A method for separating a liquid mixture of components in a hermetic centrifugal separator according to one of the preceding claims, comprising feeding said mixture of components to be separated through the inlet channel (2) by a feeding pump (3), centrifuging said liquid mixture of components in the separation chamber in which the components are separated, receiving at least one separated light component in the first outlet channel (4), receiving at least one separated heavy component in the second outlet channel (5) via said heavy component outlet pipes (21).


A porthole gasket (57) and an assembly and a heat exchanger (31) are provided. The porthole gasket is arranged for installation between a corrugated first plate (41) and a second plate (33) of a heat exchanger (31) such that a central extension plane (e-e) of the porthole gasket is parallel to the first and second plates. The porthole gasket is annular and arranged to enclose, within an inner periphery (58) of the porthole gasket, a porthole area (43) of the first plate and a porthole area (34) of the second plate. A first surface (60) of the porthole gasket, which is arranged to engage with the first plate, is corrugated so as to define alternately arranged gasket ridges (62) and gasket valleys (63) along a longitudinal extension (L) of the porthole gasket. The gasket ridges and gasket valleys are arranged to mate with plate valleys (49) and plate ridges (47), respectively, of the first plate. A second surface (61) of the porthole gasket, which is arranged to engage with a plate arrangement comprising the second plate, is essentially plane and arranged to contact an essentially plane surface (38) of the plate arrangement. The gasket ridges protrude, and the gasket valleys descend, in a normal direction (n) of the central extension plane. Widths (w1-w7) of the porthole gasket are measured parallel to the central extension plane and perpendicular to the longitudinal extension of the porthole gasket.


Patent
Alfa Laval | Date: 2017-06-14

Disc package (13) for a centrifugal separator, comprising a first set of separation discs (1), a second set of separation discs (6), wherein each disc of the first and second sets have a separation portion (2, 2) having a surface inclined with respect to the radial direction, the discs of the first and second sets are arranged coaxially around a rotation axis (X) at a distance from each other such that to form passages between adjacent discs, the separation discs of the first set have outer diameters A or below, wherein the separation discs of the second set have outer diameters B or above, wherein diameter B is larger than diameter A, wherein at least two separation discs of the first set are arranged between every two separation disc of the second set, wherein each separation disc of the first set is provided with cut-outs in the form of slits (5) that are open towards the outer radius of the separation disc, wherein each separation disc of the second set is provided with cut-outs in the form of holes (8) that are closed towards the outer radius of the separation disc, and wherein the cut-outs (5, 8) are arranged such that to distribute a flow of fluid to be separated through and over the disc package.


Patent
Alfa Laval | Date: 2017-06-28

A distillation plant comprises an elongated vessel (1) extending along a longitudinal axis (x) and defining an inner space (2), and a plurality of plate heat exchangers (3, 4), which in an operating position are arranged after each other along the longitudinal axis in the vessel. Each plate heat exchanger comprises a plurality of heat exchanger plates, each defining an extension plane (p). The heat exchanger plates form first plate interspaces and second plate interspaces. The first and second plate interspaces are arranged in an alternating order in the plate heat exchanger. At least one of the plate heat exchangers is associated with a respective opening through the vessel, and is removable from the operating position out of the vessel through the associated opening by being moved in a displacement direction, which is perpendicular to the extension plane of the heat exchanger plates.


An aseptic filler device (30) of containers (20) provided with a filler mouth (23) closed by a removable cap (24) in which the device (30) comprises: a tubular element (40) comprising an open end (42), able to be inserted with radial play on the cap (24) of the container (20) to be filled and able to go into contact with the mouth (23) and extend the mouth (23) axially, a first radial opening (44), associated to a branch conduit (50) connectable to a supply line (11) of a product and to a source line (14) of a sterilizing fluid via selection valve means (51), and a second radial opening (45), associated to a discharge conduit (55) provided with opening and closing valve means (56); and a gripping element (60) of the cap (24) of the container (20) inserted internally of the tubular element (40) and mobile between a neared position to the open end (42) of the tubular element (40) and a distanced position therefrom.


A plant (10) is described for obtaining clear must from grapes comprising at least one centrifugal separator device (12) with horizontal axis that is arranged to carry out a first separating operation, through application of a centrifugal force, between the liquid phase or must and the solid phase from the grape berries in solid state. The plant (10) also comprises, upstream of the centrifugal separator device (12) with horizontal axis, at least one tank (18) operatively connected to at least one device (22) for feeding at least partially intact grape berries to the plant (10). The tank (18) is arranged to contain additives, in particular adjuvant and/or clarifying substances, that are added to the grape berries when such grape berries are still at least partially intact. A method for obtaining clear must from grapes using the aforementioned plant (10) is moreover described.


Grant
Agency: European Commission | Branch: H2020 | Program: IA | Phase: SPIRE-03-2014 | Award Amount: 13.65M | Year: 2015

The use of renewable resources in the process industries is socially desirable and a market pull for products has started to develop in recent years, but renewable products have to compete with identical or similar-in-application products based on fossil raw materials in terms of quality and production cost. One of the main reasons for currently higher production costs of products based on renewable resources is that the production routes involve processing complex dilute aqueous solutions from which the desired products have to be separated during downstream processing. Consequently, a major challenge the process industry is facing, is the development of cost- and energy-efficient water removal and product-recovery techniques. Today downstream processes for products based on renewable resources are often developed using methods from the petrochemical area being insufficiently adapted to the new applications. A re-thinking of downstream process development and the development of suitable methodologies for a fast-track development of tailored downstream processes as well as the optimisation of separation technologies are urgently needed in order to unlock the potential of the renewable-based product market for the European process industry. PRODIAS addresses this challenge by developing and implementing: - a toolbox of highly innovative, cost-effective and renewable-tailored separation technologies; single technologies and/or hybrid systems - novel, optimized apparatus and machinery to enable for and host the developed technologies - in combination with an integrated design approach for the fast-track selection of appropriate technologies. The main advantages of the PRODIAS toolbox and integrated design approach for processes based on renewable resources are - significantly decreased production cost - increased productivity and efficiency - faster process development and commercialization - significantly lower energy consumption leading to less CO2 emmissions.

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