An apparatus and method for mixing a hydrogen sulfide scavenger with crude oil within a pipeline are disclosed. The hydrogen sulfide scavenger and the crude oil can be passed through a plurality of baffles disposed at spaced apart locations within the pipeline. The baffles can be used as an in-flow static mixer to produce increased circulation and flow speed which results in improved mixing of the hydrogen sulfide scavenger and crude oil.

A sterilizer apparatus for treating liquids, especially opaque and turbid ones characterized by a low UV radiation penetration depth, utilizing a novel tangential in-line mixer design inside an elongated reactor chamber built around an ultraviolet lamp. Other applications and adaptations of the presently disclosed apparatus include mixing fluids (including liquids and/or gases) as part of various industrial processes.

Provided is an ultrafine bubble generation device. A device 10 includes a rotary blower 31a, a rotary mixer 11, and a bubble shear filter 21. The rotary mixer 11 includes a hollow part 13 including a vertex X inside, an inflow hole 12 for introducing a fluid and a discharge hole 16. In an inner wall surface of the hollow part 13, a groove 14 having a spiral shape for the fluid introduced from the inflow hole 12 is provided, and the discharge hole 16 is provided away from the vertex X of the spiral shape on an axis of the spiral shape. The bubble shear filter 21 is provided with a hollow part inside, and includes an inflow hole 24 for introducing the fluid into the hollow part, and a discharge hole 26 for discharging the fluid. The hollow part is tubular, a plurality of plate-like thin plates 22 and 23 are arranged perpendicularly to a central axis of the hollow part such that the central axis passes through a center point of each circular plate, adjacent thin plates are provided with a plurality of openings and a plurality of pointed end portions, and a pointed end portion 25a and an opening 25b of the adjacent thin plates are arranged to face each other.

A fluid mixing unit includes a cylindrical porous body partitioning a container into a first flow space and a second flow space surrounding the first flow space. A first supply port supplies a first fluid to one of the first and second flow spaces. A second supply port provided on one end side of the container in an axial direction of the cylindrical body supplies a second fluid to the other flow space. An outlet for a mixed fluid is provided on the other end side of the container to be open only to the other flow space. Closing members are provided in a plurality of stages along the axial direction to alternately close a right and a left of the other flow space as seen in the axial direction in the other flow space. A meandering flow is formed in the other flow space to create the mixed fluid.

A mixer for a vehicle exhaust system includes a mixer body defining a mixer central axis and having an inlet configured to receive engine exhaust gas and an outlet. The mixer further includes an upstream baffle positioned within the mixer body and a downstream baffle positioned within the mixer body to be spaced from the upstream baffle in a direction along the mixer central axis. A doser defines a doser axis and is positioned to spray a reducing agent into an area between the upstream baffle and the downstream baffle such that a mixture of reducing agent and exhaust gas exits the outlet. The mixture moves through a rotational flow path that is at least 360 degrees before exiting the outlet.

An apparatus for preparing a water/diesel oil micro-emulsion comprises a diesel oil feeding unit (2), an emulsifying composition feeding unit (3), a water feeding unit (4), a mixing tank (5) in fluid communication with the diesel oil feeding unit (2), with the emulsifying composition feeding unit (3) and with the water feeding unit (4). A mixing device (22) is operatively connected to the mixing tank (5). The mixing device (22) comprises a duct (39) extending along a main direction (X-X) and presenting an inlet opening (40) and an outlet nozzle (41). A cone shaped septum (60) is placed in the duct (39), coaxial with respect to the main direction (X-X) and tapering towards the outlet nozzle (41). The cone shaped septum (60) is provided with a plurality of holes (65) made through its conical wall (63). A plurality of lamellae (76, 80) are arranged in at least a portion of the duct (39) placed downstream of the cone shaped septum (60). The plurality of lamellae (76, 80) divides said portion in a plurality of small chambers (77, 82) and are provided with through holes (78, 81). The holes (78, 81) and the small chambers (77, 82) delimit a labyrinth passageway for the liquid flowing through the duct (39) towards the outlet nozzle (41). The water/diesel oil micro-emulsion is obtained by recirculating a batch contained in the mixing tank (5) and comprising the diesel oil, the emulsifying composition and the water through a recirculation conduit and through the mixing device (22).

An exhaust system injection section (10) includes an exhaust gas flow channel (19), a laterally arranged injector connection (21), with a fluid introducing injector (22) and an injection chamber (24) formed in the channel, which is delimited by a perforated first separating wall (25), arranged in the channel upstream of the injector connection, and a perforated second separating wall (26) arranged in the channel downstream of the injector connection. To provides intensive mixing of the injected fluid with the exhaust gas flow a perforation (29) of the first separating wall (25) is configured so that exhaust gas largely flows eccentrically through the first separating wall (25) with respect to a longitudinal center axis (23) of the channel and a perforation (31) of the second separating wall (26) is configured so that exhaust gas largely flows concentrically through the second separating wall (26) with respect to the longitudinal center axis (23).

A multi-stage mixer includes a multi-stage mixer inlet, a multi-stage mixer outlet, a first flow device, and a second flow device. The multi-stage mixer inlet is configured to receive exhaust gas. The multi-stage mixer outlet is configured to provide the exhaust gas to a catalyst. The first flow device is configured to receive the exhaust gas from the multi-stage mixer inlet and to receive reductant such that the reductant is partially mixed with the exhaust gas within the first flow device. The first flow device includes a plurality of main vanes and a plurality of main vane apertures. The plurality of main vane apertures is interspaced between the plurality of main vanes. The plurality or main vane apertures is configured to receive the exhaust gas and to cooperate with the plurality of main vanes to provide the exhaust gas from the first flow device with a swirl flow.

A spray gun for a plural component system is provided. The spray gun includes a first component delivery line and a second component delivery line. The spray gun also includes a nozzle, configured to receive and mix a first component received from the first component delivery line with a second component received from the second component delivery line. The spray gun also includes an air purge system configured to, when the spray gun is in a non-actuated position, purge the nozzle of the first and second components and, when the spray gun is in an actuated position, aid in atomization of the mixture of the first and second components.

A submersible aerator includes a hollow cylindrical housing having an open upper end, an open lower end and a hollow interior. An air supply hose extends from an air supply source into the upper end of the housing and terminates at an air outlet, immediately above the lower end of the housing. Attached to the interior surface of the housing outer wall are a series of vertically spaced, oppositely facing baffle plates that provide impact surfaces to cleave rising air bubbles into smaller bubbles. A weep hole is formed on the outer surface of the air supply hose, equidistantly positioned between each adjacent pair of baffle plates. Accordingly, excess air pressure will be relieved via the weep holes as opposed to the lower end of the housing to protect nearby external equipment.