A static mixing module for mixing of material includes an inlet end and an outlet end, between which a longitudinal axis extends. A plurality of angularly spaced mixing channels extendingbetween the inlet end and the outlet end, each two adjacent mixing channels being separated by an intermediate wall. At least one mixing element is provided within each mixing channel. Each intermediate wall has a uniform or an essentially uniform wall thickness (t) as measured in a plane perpendicular to the longitudinal axis. A steam heater is also disclosed which comprises said static mixing module.

An exhaust aftertreatment system may include an exhaust gas passageway and a mixer assembly. The exhaust gas passageway may receive exhaust gas output from a combustion engine. The mixer assembly may be disposed along the exhaust gas passageway and may receive the exhaust gas. The mixer assembly may include a mixer housing, a mixing bowl and an injector housing. The mixing bowl may be disposed within the mixer housing and may include an outer diametrical surface that engages an inner diametrical surface of a wall of the mixer housing. The injector housing may extend through the wall and into an aperture in the mixing bowl. The aperture may define a flow path through which at least a majority of the exhaust gas entering the mixer assembly flows. The mixing bowl may include an upstream end portion having contours directing the exhaust gas toward the injector housing.

Dosing and mixing exhaust gas includes directing exhaust gas towards a periphery of a mixing tube that is configured to direct the exhaust gas to flow around and through the mixing tube to effectively mix and dose exhaust gas within a relatively small area. Some mixing tubes include a slotted region and a non-slotted region. Some mixing tubes include a louvered region and a non-louvered region. Some mixing tubes are offset within a mixing region of a housing.

Various examples of systems and methods for making microspheres, microparticles, and emulsions are provided. In one example, a system and method for forming microspheres comprises: pumping a dispersed phase liquid and a continuous phase liquid into a levitating magnetic impeller pump to subject the dispersed phase liquid and continuous phase liquid to a high shear environment within the impeller pump's pump chamber. In another example, a system and method for forming an emulsion comprises: pumping a dispersed phase liquid and an inner aqueous phase liquid into a levitating magnetic impeller pump to subject the dispersed phase and the inner aqueous phase to a high shear environment within the impeller pump's pump chamber.

A burner includes a first tube portion formed with an ejection port; a second tube portion that extends in the first tube portion toward the ejection port and to which gaseous mixture flows in from a side opposite to the ejection port; a third tube portion arranged in the first tube portion and including an open end positioned on the ejection port side; a closing portion that closes the open end; a coupling wall portion that closes a gap between the first tube portion and the second tube portion; a partition wall that is coupled to the first tube portion and the third tube portion, the partition wall being formed with a communication path; and an igniting portion that is arranged on the ejection port side with respect to the partition wall.

The invention relates to a process for hot application of an adhesive composition (80) on a support (96), by means of a system comprising: a nozzle (50) for applying the adhesive composition (80), a line (88) for supplying the nozzle (50) with the adhesive composition (80) to be applied in fluid form, a mixer (30) positioned in the line (88) for the homogeneous mixture of the main components of the adhesive composition before its application; the applied adhesive composition (80) including as main components: a silylated prepolymer, a compatible tackifying resin; the adhesive composition comprising a cross-linking catalyst; the process comprising: supplying the line (88) with the silylated prepolymer separated from the cross-linking catalyst, the mixing of the cross-linking catalyst with the main components by means of the mixer (30), the hot application of the mixed adhesive composition (80) onto a support (96).

An exhaust-gas purification device includes an injection nozzle provided inside an exhaust pipe and a catalyst reactor provided on a downstream side of the injection nozzle, and is configured to inject urea water from the urea water injection nozzle into exhaust gas and to reduce nitrogen oxide in the exhaust gas by a NOx catalyst contained in the catalyst reactor, where the injection nozzle is disposed to inject the urea water toward the downstream side of the flow direction of the exhaust gas, and a mixer is connected to an upstream end of the catalyst reactor, the mixer having a plurality of plate members radially disposed around the axial center of the exhaust pipe, the plate members each being formed in such a way that angles of plate surfaces of the plate member to the flow direction are different values on the upstream side and the downstream side.

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.

An exhaust system assembly including a catalyst housing, a catalyst core, and a swirler tube positioned inside the catalyst housing. The swirler tube has a plurality of openings that permit radial exhaust flow into an inner volume of the swirler tube from the catalyst housing. One end of the swirler tube has blades that extend inward and include oblique surfaces arranged at oblique angles relative to a centerline axis of the swirler tube. These blades induce a vortex in the exhaust gases exiting the first swirler tube end. The swirler tube is arranged inside the catalyst housing such that a sequential flow path is created where the exhaust gases flowing through the catalyst housing must first pass through the openings in the swirler tube and then by the blades at the first swirler tube end.

An aftertreatment device includes flow guides disposed within a dosing conduit. Exhaust enters through a perforated region of the dosing conduit and passes through the flow guides. The flow guides induce swirling or other turbulence to mix injected reactant with the exhaust gas. Various types of flow guides include cantilevered vanes, guide passageways, and louvered openings of a second conduit. Some types of flow guides induce localized mixing to inhibit deposit formation at the doser mounting unit. Other types of flow guides induce mixing downstream of the dosing conduit.