An apparatus for recirculating fluids in semiconductor systems. The apparatus including a base portion, an inlet portion coupled to a first end of the base portion, and a nozzle coupled to a second end of the base portion. The nozzle including a helical groove extending from a position near a nozzle base portion to a position near a tip of the nozzle portion. The helical groove extending from an exterior surface through the nozzle portion to an interior surface of the nozzle portion. Methods of using the apparatus in a semiconductor recirculation system are also disclosed.

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 pipe mixer for an aftertreatment system is described for mixing of a reductant and exhaust gas. The pipe mixer comprises a hollow body having a first end and a second end, the body surrounding a mixing channel; an injector mount positioned at the first end of the body; perforations provided on the body for entry of exhaust flow into the mixing channel; directional elements positioned on the body for directing exhaust flow towards the injector mount, the directional elements being positioned between the first end and the perforations wherein each directional element comprises an inlet formed on the body for entry of exhaust flow and a guide provided on an internal surface of the body, the guide having an outlet for exit of exhaust flow.

A nozzle including a first end and a second end. The first end includes at least a first inlet and a second inlet and the second end includes a plurality of outlets. An exterior surface extends from the first end to the second end of the nozzle. A plurality of vanes are disposed on the exterior surface and extend from the first end to the second end of the nozzle. A plurality of channels form along the exterior surface of the nozzle.

A mix box for an exhaust system of an internal combustion engine, the mix box being used to incorporate additives into an exhaust gas flow and including at least one inlet tube, at least one outlet tube and a housing for accommodating the inlet tube and the outlet tube, wherein: the housing delimits a volume of the mix box in relation to the surroundings; the inlet tube has an inflow section located inside the housing, which inflow section is provided with at least one inflow opening for introducing the exhaust gas into the housing; the outlet tube has a metering device designed as an injection nozzle at the end of the outlet tube and has an outflow section located inside the housing, which outflow section has a length (La) and is provided with at least one outflow opening for discharging the exhaust gas from the housing; a flow zone is provided between the inlet tube and the outlet tube and the flow zone, over at least 30% of its length (La), is free of flow guiding elements which deflect the flow in a circumferential direction and which have an outer face and an inner face inside the volume.

A single-pass flow-through dry chemical mixing trailer for use with a well has a trailer, a refillable liquid storage tank, a main liquid storage tank valve, a liquid storage tank inlet valve, an onboard power supply, a motor with a fuel supply, a transmission, a fluid circulation loop, a self-priming bidirectional flow alternating centrifuge pump, an automated mixer assembly, and a discharge tank. The refillable liquid storage tank prevents backflow to the self-priming bidirectional flow alternating centrifuge pump while flowing the homogenized slurry to the well and the dry chemicals introduced at the automated mixer are subjected to high shear forces, incorporating the dry chemicals into the liquid with increased dispersion and reduced agglomeration.

An exhaust gas treatment device includes an exhaust gas guide element which has an exhaust gas conduit. A first flow separation element is disposed in the exhaust gas conduit that divides the exhaust gas conduit into a first partial conduit and a second partial conduit. The first flow separation element has a first conduit area. A second flow separation element is disposed in the second partial conduit. The second flow separation element divides the second partial conduit into a first sub-conduit, a second sub-conduit, and a third sub-conduit. The second flow separation element has a second conduit area which is cylindrical or expands in a flow direction. The first conduit area of the first flow separation element expands along an injection direction of a reductant.

An exhaust gas post-treatment apparatus comprises a first mixing chamber assembly and a second mixing chamber assembly. The first mixing chamber assembly comprises a first housing provided with a first mixing chamber, a gas inlet pipe, a first mixing pipe at least partially located in the first mixing chamber and a perforated pipe located in the first mixing pipe. The first mixing pipe includes a first pipe body located in the first mixing chamber and a second pipe body extending from the first mixing chamber, wherein a side wall of the first pipe body is provided with apertures and flow plates located in the first mixing chamber. In the axial direction of the perforated pipe, the perforated area of the perforated pipe fully covers the length of the flow plates. The second mixing chamber assembly includes a flow-guiding hood.

A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.

An apparatus for producing a composition that includes nano-bubbles dispersed in a liquid carrier includes: (a) an elongate housing comprising a first end and a second end, the housing defining a liquid inlet, a liquid outlet, and an interior cavity adapted for receiving the liquid carrier from a liquid source; and (b) a gas-permeable member at least partially disposed within the interior cavity of the housing. The gas-permeable member includes an open end adapted for receiving a pressurized gas from a gas source, a closed end, and a porous sidewall extending between the open and closed ends having a mean pore size no greater than 1.0 m. The gas-permeable member defines an inner surface, an outer surface, and a lumen. The housing and gas-permeable member are configured to form a composition that includes the liquid carrier and the nano-bubbles dispersed therein.