An aftertreatment system comprises: a housing, a SCR system disposed in the housing. A mixer is disposed upstream of the SCR system and includes: a hub, a tubular member disposed circumferentially around the hub and defining a reductant entry port, and plurality of vanes extending from the hub to the tubular member such that openings are defined between adjacent vanes. The plurality of vanes swirl the exhaust gas in a circumferential direction. A reductant injector is disposed on the housing upstream of the SCR system along a transverse axis and configured to insert a reductant into the exhaust gas flowing through the housing through the reductant entry port. The reductant is inserted at a non-zero angle with respect to the transverse axis opposite the circumferential direction to achieve virtual interception. A mixer central axis is radially offset with respect to a housing central axis of the housing.

An engine system includes an internal combustion engine having an exhaust system with an SCR aftertreatment mechanism and a urea injector upstream the aftertreatment mechanism. A mixing mechanism is positioned fluidly between the urea injector and the aftertreatment mechanism and includes a turbulator and a swirler structured to increase mixing of the urea and exhaust gases. Related methodology is also disclosed.

A flameless thermal oxidizer apparatus for a gaseous stream containing hydrogen includes a vessel containing a ceramic matrix bed; and a dip tube extending into the ceramic matrix bed, the dip tube including a first flow path for a first stream having hydrogen therein, and a second flow path for a second stream having an oxidant therein to be mixed with the first stream for introduction into the ceramic matrix bed. A related method is also provided.

A swirl mixer for mixing a reducing agent with exhaust gas in a selective catalytic reduction (SCR) aftertreatment system is described. The swirl mixer may comprise a base permitting a flow of the reducing agent and the exhaust gas therethrough, and three arrays of fins projecting from the base in a direction of flow of the exhaust gas. The three arrays of fins may be arranged in a triangular configuration about a center of the mixer to induce a swirl motion to the reducing agent and the exhaust gas flowing through the mixer. The fins in each of the arrays may be oriented in a common direction that is rotated by about 60° from the common direction of the fins in an adjacent array.

A dual mixer for mixing a reducing agent with exhaust gas in a mixing section of a selective catalytic reduction (SCR) aftertreatment system is disclosed. The dual mixer may comprise a first mixer including a grid and a plurality of trapezoidal fins projecting from the grid in a direction of flow of the exhaust gas. The dual mixer may further comprise a swirl mixer positioned downstream of the first mixer and separated therefrom by a distance. The swirl mixer may include a base and three arrays of swirl fins projecting from the base in the direction of flow of the exhaust gas. The swirl fins in each of the arrays may be oriented in a common direction that is rotated by about 60° from the common direction of the swirl fins in an adjacent array.

A conveyor having a conveyance structure, mixing components, belt, and gas manifold. The gas manifold disposed within or on an exterior portion of the structure. The gas manifold having one or more manifold outlet ports to dry, condition, or treat a metered stream of seed within the conveyor. The manifold may be operably connected to a recirculating air system providing the vacuum source and pressurized air source of atmospheric or conditioned air. A filter and vacuum port may extract debris or humidity from the metered stream of seed within the conveyor. A plurality of mixing baffles may be longitudinally spaced apart through the conveyor in a laterally alternating manner to mix the metered stream of seed. The conveyor may be used to transfer, mix, dry, condition and treat the metered stream of seed between multiple stages of treatment.

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.

According to one embodiment, an apparatus (50) for mounting to an inner wall (33) of an exhaust tube (32) includes a tube engagement surface (52) and an exhaust engagement surface (54A). The tube engagement surface comprises a convex surface of a constant first radius of curvature about a first axis. The exhaust engagement surface is adjacent the tube engagement surface, and includes a concave surface of a second radius of curvature about a second axis generally perpendicular to the first axis.

A mixer assembly for a vehicle exhaust system includes a housing having an inlet portion and an outlet portion that are connected to each other with a channel portion. An inlet baffle is positioned at the inlet portion and an outlet baffle is positioned at the outlet portion. The inlet and outlet baffles are non-concentric. An injector housing is attached to the housing downstream of the inlet baffle and a spray guide is mounted within the injector housing. The spray guide has a spray inlet and a spray outlet that directs spray into the channel portion.

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