A device for supplying a chemical reactant into the exhaust system of an internal combustion engine, comprising: a mixer housing; a metering pipe passing through the mixer housing, towards which the exhaust flow flowing into the mixer housing flows in a transverse direction, and having a first end and a second end; a metering unit arranged at the first end of the metering pipe and connected to a reactant supply for discharging reactant into the metering pipe; and means for generating a swirl flow of the exhaust flow within the metering pipe. The metering pipe has at least one inflow opening extending over a casing surface segment of no less than 45° in the circumferential direction and extending over at least one section of the length of the metering pipe, said inflow opening having a shovel-like hood arranged on the metering pipe and directing the exhaust flow eccentrically into the inflow opening.

A mixer arrangement for aftertreatment of exhaust gas including comprising a housing configured to form a cavity including a center flow channel in which the exhaust gas flows; and at least one side inlet arrangement configured to allow the exhaust gas to enter the center flow channel from the sides thereof and configured to cause an advancing center flow in the center flow channel and a rotating flow around or on the edges of the center flow in the center flow channel; wherein the at least one side inlet arrangement contains at least a pair of side inlet pipes on the side of the center flow channel.

A nozzle for injecting a first liquid mass into a stream of second liquid mass flowing within a pipe, comprising a first, outer, cylinder and second, inner, cylinder concentrically arranged about a nozzle axis, securing means for securing the nozzle to a wall of the pipe with the nozzle axis orthogonal to the pipe wall, the nozzle projecting into an interior of the pipe in use, duct means for receiving the first liquid mass and transporting it to the interior of the inner and outer cylinders, the inner cylinder comprising at least one hole arranged to expel liquid therethrough, and the outer cylinder comprising at least one hole arranged to expel liquid therethrough.

A device and related method for producing a ready-to-use solution from a concentrate and a diluent includes an inlet for the diluent; an inlet for the concentrate; an outlet for the solution; a line extending from the inlet for the diluent via a confluence where diluent and concentrate meet, to the outlet; a mixing container arranged in the line between the confluence and the outlet and having a larger cross-section than parts of the line, which are arranged upstream and downstream of the mixing container; and a metering pump for the concentrate, which is connected on the suction side to the inlet for the concentrate and on the pressure side to the confluence and which operates in a pulsed manner. The metering pump works with a clock frequency, in which a plurality of pump surges are attributable to the dwell time of the liquid in the mixing container.

A device for supplying a chemical reactant into the exhaust system of an internal combustion engine, comprising: a mixer housing having an inlet opening through which the exhaust flow enters the mixer housing; a metering pipe passing through the mixer housing, towards which the exhaust flow flowing into the mixer housing flows in a transverse direction, and having a first end and a second end; a metering unit which is arranged at the first end of the metering pipe and can be connected to a reactant supply for discharging reactant into the metering pipe; and means for generating a swirl flow of the exhaust flow within the metering pipe. For this purpose, the metering pipe has at least one inflow opening extending over a casing surface segment of no less than 45° in the circumferential direction and extending over at least one section of the length of the metering tube located within the mixer housing, said in-flow opening having a shovel-like hood arranged on the metering pipe and directing the exhaust flow eccentrically into the in-flow opening.

A polymer dispersion system for use in a hydraulic fracturing operation is disclosed. The system comprises: (a) a first sub-system comprising an ingress and an egress; (b) a second sub-system comprising an ingress and an egress; (c) an eductor mixing device comprising a first inlet in fluid communication with the egress of the first sub-system, a second inlet in fluid communication with the egress of the second subsystem, and an egress; (d) a tank assembly comprising an ingress and an egress, the ingress of the tank assembly being in fluid communication with the egress of the eductor mixing device; and (e) a transfer sub-system comprising an ingress that is coupled to the egress of the tank assembly. The transfer sub-system comprises a first transfer pump and a second transfer pump. In addition, method for operating the polymer dispersion system is disclosed.

A fluid mixing device (10) for use in chemical reactions involving two or more immiscible fluid phases. It mixes the reactants and prevents phase separation, particularly in pipe bends. The device (10) for mixing fluids flowing through a pipe (16), comprises a plate (12) having a flowpath (14) therethrough and two or more tabs (20) extending from the plate into the flowpath at an angle (24) from the plane (22) of the plate. The tabs (20) are formed by first folds (32) in the plate, at least two of the tabs (20A) having a second fold (26) therein, the tabs and first and second folds being arranged to produce two counter-rotating vortices (30) in the fluids passing through the pipe. The device has a plane of symmetry (28) perpendicular to the plane (22) of the plate (12).

An adapter couples to a container and includes an adapter body and a mixing element. The adapter body includes a neck section and a cap section. The neck section has a first interior surface that defines a first channel extending therethrough. The cap section is coupled to the neck section. The cap section has a second interior surface that defines a second channel extending therethrough that is in fluid communication with the first channel. The mixing element is coupled to the first interior surface and extends into the first channel.

A first inlet flow can be directed along an axial direction in a hydrocyclonic flow cell. The first inlet flow can include first constituent molecules. At a same time, one or more second inlet flows can be directed along a circumferential direction of the hydrocyclonic flow cell. Each second inlet flow can include a buffer solution. The first inlet flow can be subjected to flow focusing by a surrounding primary vortex formed by the one or more second inlet flows, so as to generate a flow comprising a plurality of nanoparticles at an outlet of the hydrocyclonic flow cell. Each nanoparticle can be formed by a respective plurality of the first constituent molecules.

A polymer dispersion system for use in a hydraulic fracturing operation is disclosed. The system comprises: (a) a first sub-system comprising an ingress and an egress; (b) a second sub-system comprising an ingress and an egress; (c) an eductor mixing device comprising a first inlet in fluid communication with the egress of the first sub-system, a second inlet in fluid communication with the egress of the second subsystem, and an egress; (d) a tank assembly comprising an ingress and an egress, the ingress of the tank assembly being in fluid communication with the egress of the eductor mixing device; and (e) a transfer sub-system comprising an ingress that is coupled to the egress of the tank assembly. The transfer sub-system comprises a first transfer pump and a second transfer pump. In addition, method for operating the polymer dispersion system is disclosed.