Alfa Laval Attorneys

The present invention relates to a centrifugal separator (1) for cleaning gas containing contaminants. The centrifugal separator (1) comprises: a stationary casing (2), enclosing a separation space (3) through which a gas flow is permitted, the casing having a longitudinal centre axis (I), a gas inlet pipe module (180) comprising a gas inlet pipe (18, 18r) permitting supply of the gas to be cleaned to the stationary casing (2), and a fitting (200) connecting the gas inlet pipe module (180) to the stationary casing (2), a rotating member (7) comprising a plurality of separation members (9) arranged in the separation space (3) and being arranged to rotate around an axis (X) of rotation, a gas outlet (28) configured to permit discharge of cleaned gas out from the stationary casing (2), a drainage outlet (25) configured to permit discharge from the centrifugal separator (1) of liquid contaminants that have been separated from the gas, a drive member (22) for rotating the rotating member (7), wherein the centrifugal separator (1) is provided with a heat shield (60) attached to and at least partially covering the gas inlet pipe module (180).

The disclosure relates to an iron-based brazing filler composition for bonding stainless steels, particularly austenitic stainless steels, the filler composition comprising an alloy containing: 17.0-26.0 wt% chromium (Cr), 8.0-22.0 wt% nickel (Ni), 5.0-15.0 wt% silicon (Si), 0.1-1.0 wt% boron (B), 0-0.1 wt% molybdenum (Mo), 0-2.0 wt% manganese (Mn), 0-0.25 wt% carbon (C), 0-0.05 wt% phosphorus (P), 0-0.03 wt% sulfur (S), 0-0.2 wt% nitrogen (N), 0-1.0 wt% niobium (Nb), 0-0.7 wt% titanium (Ti), 0-0.1 wt% cerium (Ce), the balance being iron (Fe), together with any unavoidable impurities. The disclosure further relates to a method for manufacturing a brazed product and to a brazed product manufactured by brazing objects with the iron-based brazing material.

A combustion system (100) for a marine vessel is disclosed, comprising a combustion chamber (110), a burner (120) configured to inject, into the combustion chamber, a first combustible mixture to generate a first flame and a second combustible mixture to generate a second flame, and a fuel supply system (130) configured to provide a first fuel to the first combustible mixture and a second fuel to the second combustible mixture, wherein the second fuel is an ammonia-based fuel. The system further comprises a heating device (140) configured to heat at least some of the second fuel to a temperature allowing the second fuel to decompose into hydrogen and nitrogen, thereby increasing a hydrogen content of the second combustible mixture. The heating device is arranged at the burner and configured to transfer heat from the second flame to the second fuel.

The present invention relates to a centrifugal separator for cleaning gas containing contaminants and a separation member (9') for the separator. The centrifugal separator (1) comprises a stationary casing (2), a gas inlet (20) and a plurality of separation members (9') comprising a central aperture (80) defining an inner periphery (91) of the separation member (9') and a rotary member (7) arranged to rotate around an axis (X) of rotation in the separation space (3) and further comprises a rotatable shaft (8) and a separation unit (16) comprising a plurality of the separation members (9') attached to the shaft. At least a portion (90) of the inner periphery (91) of the separation member (9') is arranged in contact with the shaft (8) when attached to the shaft (8), and wherein the portion (90) is provided with one or more flexible elements (100). By the flexible elements, a press fit of the separation members to the shaft is obtained.

A centrifugal separator (100) is disclosed, comprising a barrier device (150) arranged between a separation space and a drainage region. The barrier device comprises an upper side (152) facing the separation space and being configured to guide the gas flow towards a gas outlet (124) of the housing, a lower side (154) configured to shield the contaminants in the drainage region from the gas outlet, and a peripheral edge (156) defining a circumferential gap between the barrier device and an inner wall portion of the housing, wherein the gap is configured to permit a subflow of the gas flow to pass between the separation space and the drainage region. The barrier device further comprises a flow guide (162) arranged at the peripheral edge and configured to direct at least a portion of the subflow in a downward direction.

A centrifugal separator (100) is disclosed, comprising a barrier device (150) arranged between a separation space and a drainage region of the separator. The barrier device comprises a peripheral edge (156) defining a circumferential gap between the barrier device and an inner wall portion of a housing, the gap being configured to permit a subflow of the gas flow to pass between the separation space and the drainage region. The barrier device further comprises an outlet channel (164) bridging the gap to connect the barrier device to the gas outlet, wherein an outer surface of a cross section of the outlet channel narrows in a direction of the subflow, from a leading edge towards a trailing edge, to reduce a turbulence of at least a portion of the subflow passing the outlet channel.

A centrifugal separator (100) is disclosed, comprising a barrier device (150) arranged between a separation space and a drainage region. The barrier device comprises a peripheral edge (156) defining a circumferential gap between the barrier device and an inner wall portion of the housing, wherein the gap is configured to permit a subflow of the gas flow to pass between the separation space and the drainage region. The barrier device further comprises an outlet channel (164) bridging the gap to connect the barrier device to the gas outlet, and a flow detachment edge (166) arranged at a lower, downstream portion of an exterior surface of the outlet channel, with reference to the subflow, the flow detachment edge being configured to allow at least a portion of the subflow to detach from the exterior surface.

A centrifugal separator (100) is disclosed, comprising a stationary housing (110) accommodating a rotatable separation unit (130), a rotor shaft (132) configured to drive the rotatable separation unit, and a barrier device (150) arranged between a separation space and a drainage region of the housing. The barrier device comprises an upper side (152) facing the separation space and configured to guide the gas flow towards a gas outlet (124) of the housing, a lower side (154) configured to shield the contaminants in the drainage region from the gas outlet, a central passage (158) for the rotor shaft, and a first edge (167) and a second edge (168) protruding from the lower side and arranged to encircle the central passage to trap contaminants flowing on the lower side, towards the central passage.

The present invention provides a centrifugal separator (100) for cleaning gas containing contaminants. The centrifugal separator (100) is comprising a stationary casing (210), enclosing a separation space (220) through which a gas flow is permitted; a gas inlet (112) and a gas outlet (114) for guiding the flow of gas through the stationary casing (210) to allow at least some of the contaminants to be separated from the flow of gas; a drainage outlet (215) configured to permit discharge of liquid contaminants that have been separated from the gas; a rotor (230) comprising a plurality of separation members (232) arranged in said separation space (220) and being arranged to rotate around an axis (X) of rotation; and a drive member (234) for rotating the rotor (230). The centrifugal separator (100) is arranged so that a main flow path for gas is formed from the gas inlet (112), through the stationary casing (210) and out through the gas outlet (114) and further comprises a chamber (20) enclosing a volume V that does not form part of the main flow path but is connected in a pressure-equalized manner with the main flow path. The centrifugal separator (100) further comprises a sensor (30) arranged to generate a signal indicative of the gas pressure in said volume V of said chamber (20).

The present invention provides a centrifugal separator (1) for cleaning gas containing contaminants. The centrifugal separator is comprising a stationary casing (2), enclosing a separation space (3) through which a gas flow is permitted, a gas inlet chamber (20) for receiving the supply of the gas to be cleaned and in fluid communication with said separation space (3), a gas inlet tube (60) connected to the gas inlet chamber (20) and arranged for supply of the gas to be cleaned, a rotating member (7) comprising a plurality of separation members (9) arranged in said separation space (3) and being arranged to rotate around an axis (X) of rotation, a gas outlet (28) arranged through the stationary casing (2) and configured to permit discharge of cleaned gas out from the stationary casing (2), a drainage outlet (29) arranged in the stationary casing (2) and configured to permit discharge of liquid contaminants that have been separated from the gas out from the stationary casing and a drive member (22) for rotating the rotating member (7). Further, the gas inlet tube (60) has a curved shape for facilitating pre-rotation of the gas to be cleaned in the gas inlet chamber (20).