A device for adding and mixing an additive into a hydraulically settable mixture includes a tubular cavity for conducting the hydraulically settable mixture through in an intended flow direction, wherein a static flow-influencing element, in which there is an aperture that leads into the cavity and is intended for introducing the additive, projects into the cavity.

A system (10) for treating produce includes an application system (12) for applying a treatment liquid to the produce. A piston pump (20) is connected in liquid flow receiving communication with a source of treatment liquid (16), and also is connected in liquid flow expelling communication with an application line (18) leading to the application system. A control system (22) controls the operation of the piston pump to pump a selected dosage of the treatment liquid from the source of treatment liquid (16) to the application system (12).

A static mixer for desalting a fluid is disclosed. A static mixer can include a housing, a reduction cone disposed concentrically within the housing; and an expansion cone disposed concentrically within the housing; wherein the static mixer is configured to direct fluid flow through the reduction cone onto the expansion cone, thereby mixing the fluid.

A method for treating wastewater containing organic contaminants is disclosed. Wastewater containing organic contaminants is fed into an outer pipe of a pipe-in-pipe assembly, wherein the outer pipe concentrically surrounds an inner pipe. Oxygen is fed into the inner pipe which is rotatably mounted and is provided with openings, thereby to provide different sizes of oxygen bubbles to the outer pipe. The oxygen is dispersed into an annular portion between the outer pipe and the inner pipe thereby contacting the wastewater with oxygen; and the thus treated wastewater is collected. The inner pipe may be a tunable membrane material, and the outer pipe may have a biocatalyst material present on its inner surface.

A static mixer for desalting a fluid is disclosed. A static mixer can include a housing, a reduction cone disposed concentrically within the housing; and an expansion cone disposed concentrically within the housing; wherein the static mixer is configured to direct fluid flow through the reduction cone onto the expansion cone, thereby mixing the fluid.

A static mixer for desalting a fluid is disclosed. A static mixer can include a housing, a reduction cone disposed concentrically within the housing; and an expansion cone disposed concentrically within the housing; wherein the static mixer is configured to direct fluid flow through the reduction cone onto the expansion cone, thereby mixing the fluid.

A static mixer for desalting a fluid is disclosed. A static mixer can include a housing, a reduction cone disposed concentrically within the housing; and an expansion cone disposed concentrically within the housing; wherein the static mixer is configured to direct fluid flow through the reduction cone onto the expansion cone, thereby mixing the fluid.

A liquid fuel injection assembly for a gas turbine engine is provided. The liquid fuel injection assembly includes at least one micromixer, at least one liquid fuel injection nozzle, and at least one post. The at least one micromixer includes at least one wall defining a conduit. The at least one liquid fuel injection nozzle extends from the at least one wall into the conduit. The at least one liquid fuel injection nozzle has a first drag coefficient. The at least one liquid fuel injection nozzle is configured to inject a flow of liquid fuel into the flow of air. The at least one post extends from the at least one wall and circumscribes the at least one liquid fuel injection nozzle. The liquid fuel injection nozzle and post have a second drag coefficient. The first drag coefficient is greater than the second drag coefficient.

A mixing apparatus for in-line mixing of fluids is described herein. In some embodiments, the mixing apparatus comprises a mixer body defining a plurality of support arms and a substantially conical flow member that can be coupled to the plurality of support arms. In other embodiments, the mixer body defines at least one body injection passage extending from an injection inlet on the exterior surface of the mixer body through one of the support arms; the flow member defines a flow member injection passage extending through at least a portion of the flow member to an injection outlet defined at the leading end or the peripheral surface of the flow member; and the flow member is coupled to the support arms such that the injection inlet is in fluid communication with the injection outlet via the mixer body injection passage and the flow member injection passage.

The present invention relates to an apparatus and method for mixing and atomizing a hydrocarbon stream using a diluent/dispersion stream. The apparatus includes an inner conduit having an inlet for receiving the diluent/dispersion stream; an outer conduit having an inlet for receiving the hydrocarbon stream and an outlet for dispensing a mixture including the hydrocarbon and the dispersion/diluent streams; the outer conduit concentric to the inner conduit to define at least a first annular space and a second annular space; the first annular space being located downstream of the inlet of the outer conduit, the first annular space enabling formation of a thin film of the hydrocarbon stream between an outer surface of the inner conduit and an inner surface of the outer conduit; the second annular space being located downstream of the first annular space, the second annular space having a width greater than a width of the first annular space; and the inner conduit located at about the second annular space includes a first set orifices disposed on a periphery thereof for dispensing a first portion of the dispersion/diluent stream into the thin film of hydrocarbon stream to cross-shear the thin film and form the mixture including the hydrocarbon and the dispersion/diluent streams.