The contacting device for countercurrent contacting of fluid streams and having a first pair of intersecting grids of spaced-apart and parallel deflector blades and a second pair of intersecting grids of spaced-apart and parallel deflector blades. The deflector blades in each one of the grids are interleaved with the deflector blades in the paired intersecting grid and may have uncut side portions that join them together along a transverse strip where the deflector blades cross each other or adjacent opposed ends of the deflector blades and cut side portions that extend from the uncut side portions to the ends of the deflector blades. At least some of the deflector blades have directional tabs and associated openings to allow portions of the fluid streams to pass through the deflector blades to facilitate mixing of the fluid streams.

A mixer and a method therein, including feeding a rotating flow of exhaust gas in a mixing pipe towards a turning end of a mixing chamber; dosing reactant by a doser against the rotating flow around a centreline of the mixing pipe; maintaining a guide around the doser such that a front face of the guide faces the rotating flow, and the guide defines a central opening surrounding the doser; guiding a side flow out of the rotating flow to a carrier flow around the doser via the central opening; and inhibiting by the guide turbulence from being transferred from the side flow to the carrier flow.

An improved thermal fogging device includes an extended heat transfer surface located within the aerosolization chamber that increases the mixing of the liquid chemical particles and the hot gases in the aerosol to improve aerosolization. The extended heat transfer surface also helps to increase the heat transfer to the forming aerosol in the aerosolization chamber.

The invention refers to a method, and to a device to produce emulsions and particle suspensions by using electro-hydrodinamic forces and microfluidics This combined use allow the production of droplets with mean diameters which may be either smaller than those obtained in conventional microfluidic devices or larger than those obtained by electrospray, bridging the gap between the two methods acting independently.

The present invention generally relates to microfluidic droplets and, in particular, to multiple emulsion microfluidic droplets. In one set of embodiments, multiple emulsion droplets are provided, where an inner shell of the droplet is relatively thin, compared to the outer shell (or other shells) of the droplet. For instance, in one set of embodiments, the inner droplet has an average thickness of less than about 1000 nm. In some cases, the inner shell may be rigidified, e.g., to form a gel or a polymeric layer. This may be useful, for example, for preventing coalescence of fluids within the microfluidic droplet. Other embodiments of the present invention are generally directed to methods of making such droplets, methods of using such droplets, microfluidic devices for making such droplets, and the like.

A material distributing and mixing apparatus A conduit having a fluid inlet and fluid outlet houses a mixing element The mixing element includes rectangular segments forming forward facing V-sections and rearward facing V-sections The forward facing V-sections form vertical apexes that face an incoming fluid stream while additive inlet ports are positioned proximate thereto. The forward facing V-sections are positioned proximate to the top and bottom surfaces of the conduit while the rearward facing V-sections form apexes which are substantially horizontal, the rearward facing V-sections being positioned proximate the vertically extending side walls of the conduit

The present invention relates to an apparatus for mixing an additive with a gas flow, in particular for an exhaust gas system of a vehicle having an internal combustion engine, that comprises a mixing chamber which can be flowed through by at least a portion of the gas flow, said mixing chamber having at least one inlet opening through which a main inlet flow of the gas flow flows into the mixing chamber on operation of the apparatus, having at least one metering opening and having at least one outlet opening. The apparatus further comprises a metering device by means of which an additive flow of the additive can be introduced into the mixing chamber through the metering opening, wherein the inlet opening and the metering opening are arranged and formed such that the main inlet flow and the additive flow in substantially opposite directions into the mixing chamber so that the main inlet flow and the additive flow impact one another.

The contacting device for countercurrent contacting of fluid streams and having a first pair of intersecting grids of spaced-apart and parallel deflector blades and a second pair of intersecting grids of spaced-apart and parallel deflector blades. The deflector blades in each one of the grids are interleaved with the deflector blades in the paired intersecting grid and may have uncut side portions that join them together along a transverse strip where the deflector blades cross each other or adjacent opposed ends of the deflector blades and cut side portions that extend from the uncut side portions to the ends of the deflector blades. At least some of the deflector blades have directional tabs and associated openings to allow portions of the fluid streams to pass through the deflector blades to facilitate mixing of the fluid streams.

The contacting device for countercurrent contacting of fluid streams and having a first pair of intersecting grids of spaced-apart and parallel deflector blades and a second pair of intersecting grids of spaced-apart and parallel deflector blades. The deflector blades in each one of the grids are interleaved with the deflector blades in the paired intersecting grid and may have uncut side portions that join them together along a transverse strip where the deflector blades cross each other or adjacent opposed ends of the deflector blades and cut side portions that extend from the uncut side portions to the ends of the deflector blades. At least some of the deflector blades have directional tabs and associated openings to allow portions of the fluid streams to pass through the deflector blades to facilitate mixing of the fluid streams.

A multi-directional contactor apparatus configured to utilize co-current and counter current flow to contact a first fluid and a second fluid, wherein the second fluid is more dense than the first fluid. The contactor comprises a chamber partially divided by a vertically extending weir, a first inlet port permitting the first fluid to enter the chamber, a second inlet port positioned above the first inlet port and permitting the second fluid to enter the chamber. Countercurrent and co-current contact of the first and second liquids occurs on one side of the weir. The weir separates the co-current contacted second fluid stream from the countercurrent contacted second fluid stream and allows the separated streams to be released from the chamber. The co-current and countercurrent contacted first fluid is released from an upper portion of the tank.