Alfa Laval Patente

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The present invention provides a centrifugal separator for separating at least a liquid heavy phase from a liquid feed mixture, comprising a frame (2), a drive member (3) and a rotatable part (4), wherein the drive member (3) is configured to rotate the rotatable part (4) in relation to the frame (2) around an axis of rotation (X), and wherein the rotatable part (4) comprises a centrifuge bowl (5) enclosing a separation space (9a) and a sludge space (9b). Further, the separation space (9a) comprises a stack (10) of separation discs (40) arranged coaxially around the axis of rotation (X) and wherein said sludge space (9b) is arranged radially outside said stack (10) of separation discs (40). The centrifuge bowl (5) further comprises an inlet (14) for receiving the liquid feed mixture and a first outlet chamber (6) in fluid connection with a heavy phase outlet pipe (6a) for discharging a separated liquid heavy phase. The centrifugal separator (1) further comprises a plurality of outlet pipes (30) for transport of said separated liquid heavy phase from said sludge space (9b) towards said first outlet chamber (6); and wherein the stack (10) of separation discs is compressed with a compression force when mounted in the centrifuge bowl (5) and wherein said plurality of outlet pipes (30) form an element for transmitting said compression force to the compressed stack (10) of separation discs.

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The disclosure relates to a heat exchanger (100) comprising a stack (105)of heat exchanger plates (107), a first set of channels (401), and a second set of channels (402), in each of the channels in the respective set of channels (401, 402) fin structures (210) are positioned between the heat exchanger plates (107), each heat exchanger plate (107) comprises a first inlet port (201), a first outlet port (211), a second inlet port (202) and a second outlet port (212) formed at a respective corner portion of the respective heat exchanger plate (107) and extending through the stack (105), the heat exchanger (100) further comprises a distribution structure (220) at the respective inlet port (201, 202) and a collection structure (230) at the respective outlet port (211, 212), the distribution structure (220), respectively the collection structure (230) is positioned between the port (201, 202, 211, 212) and the respective fin structure (210), wherein an internal interface (228) between the respective distribution structure (220) and the fin structure (210) and/or an internal interface (238) between the respective collection structure (230) and the fin structure (210) in the respective channel of the first set of channels (401) and/or in the respective channel of the second set of channels (402) is inclined relative to the longitudinally extending fin direction (FD) and is inclined also relative to a transversal direction (TD).

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The present invention relates to a UV-treatment unit for reducing the amount of active or living micro-organisms in a liquid food product. The unit comprises a liquid inlet and a liquid outlet and a set of translucent liquid tubes fluidly connected to the inlet and the outlet and defining a flow channel for the liquid, wherein each tube has a planar shape providing at least two turns for the flow direction between the inlet and the outlet. Further, the unit comprises one or more UV-light sources, which are configured to emit light in a wavelength range between 180-300 nm and arranged on at least one side of the set of liquid tubes. The unit optionally comprises an optical filter placed between the UV-light sources and the set of liquid tubes, the filter configured to prevent wavelengths of more than 300 nm to pass through the filter. Also, a system including the UV-treatment unit is claimed.

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The present invention relates to a process for extracting starch, fibres and protein from a plant-based raw material. The process comprises supplying slurry of plant-based flour and water to a hydrocyclone system (720), which provides a first flow (F1) comprising the fibres (F) and protein (P) extracted from the plant-based raw material and a second flow (F2) comprising starch (S) extracted from the plant-based raw material. The first flow (F1) is supplied to a first centrifugal separator (S1) to provide a fibre fraction as a third flow (F3) and an aqueous protein-containing fraction as a fourth flow (F4), to which acid is added to precipitate dissolved proteins. The flow (F4) is separated into a liquid light phase comprising whey (Wh) and a heavy phase comprising concentrated protein-containing fraction (CP), by using a highspeed centrifugal disc stack separator (2; S2, 72) comprising a heavy phase outlet and/or light phase outlet that are/is arranged in fluid connection with a flow influencing means (6; 12); and wherein the separating in the second centrifugal separator (S2) comprises regulating the flows at the heavy phase and/or light phase outlets by means of the flow influencing means such that the content of the protein-containing fraction at the light phase outlet is minimized.

A fan air guide (6) and a method for manufacturing such a fan air guide are provided. The fan air guide comprises a frame (8) and a plurality of vanes (12, 54). Each of the vanes extends from a hub (10) inside the frame to the frame and engages with the frame. Each of the vanes comprises a first end part (14), a second end part (16) and an intermediate part (18) extending between the first and second end parts. The fan air guide is characterized in that a first portion (20) of the first end part of at least a first vane (12') of the vanes is twisted around its longitudinal axis (A) in relation to the intermediate part of the first vane. This is for adaption of a length (L1) of the first vane to a distance (d) between the frame and the hub.

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The present invention relates to a method and system for producing crude palm oil from a palm-oil containing raw material comprising receiving and feeding the palm-oil containing raw material to a sterilizer (11), sterilizing the raw material in the sterilizer (11) by means of steam, threshing the raw material in a thresher unit (12), digesting fruits in a digester unit (13), and pressing the fruits in a pressing arrangement (14) to extract palm oil from the digested fruits, clarifying the extracted palm oil in a clarification tank (15) and drying the extracted palm oil in a dryer unit (18) to produce crude palm oil, whereby during the production a palm oil mill effluent (POME) is generated as a residual sludge, and the method further comprises:(a) Separating water (A) and solids (B) from at least part of the palm oil mill effluent (POME) by using a POME separator (26);(b) Feeding at least part of the separated water (A) to a steam generator (21);(c) Generating steam (C) in the steam generator (21) by using the separated water (A);(d) Feeding the generated steam (C) to the sterilizer (11).