Systems and methods to obtain a desired rheology of drilling mud are described herein. Embodiments generally include a hollow tubular body coupled to, and including, numerous shearing elements configured to facilitate achievement of such desired rheology.

Provided in one embodiment is a method of making paste for solar cells. The method can include forcing silver through a feed tube coupled to a hydrodynamic cavitation chamber using an air-driven piston. The method can include subjecting the silver to hydrodynamic cavitation in the hydrodynamic cavitation chamber by using a hydraulic pump to pass the silver sequentially through a primary orifice, a secondary orifice, and a final orifice within the hydrodynamic cavitation chamber to produce the paste for the solar cells. The silver can include up to three unique silver powders having a total particle size distribution from 0.1 microns to 10 microns. A first silver powder can have a first average particle size of 1.5 um, a second silver powder having a second average particle size of 0.5 um, and a third silver powder having a third average particle size of 0.2 um.

A fluid mixing and distribution device for a catalytic downflow reactor, said device comprising a collection zone (A), a mixing zone (B) comprising a mixing chamber (15) for fluids and an exchange chamber (16) for fluids, a distribution zone (C), said exchange chamber (16) comprising at least one upper lateral cross-section of flow (17a) and at least one lower lateral cross-section of flow (17b) through which fluids can pass from said exchange chamber (16) to said distribution zone (C), characterized in that said exchange chamber (16) comprises a fluid deflection means (24) fixed to said exchange chamber (16) and located downstream of the upper lateral cross-section of flow (17a), said fluid deflection means (24) forming with said exchange chamber (16) a space (26) in the shape of a pan.

A fine bubble generating device is provided, including: a main body, having an inlet, an outlet and a venturi tube mechanism located between the inlet and the outlet, the venturi tube mechanism having a neck portion communicating with outside; a bubble fining mechanism, having at least one passage which is smaller than the inlet in cross-sectional area, the at least one passage communicating with and between the venturi tube mechanism and the outlet. The bubble fining mechanism includes a first vortex member having at least one first slant hole and a second vortex member having at least one second slant hole. The at least one first slant hole and the at least one second slant hole are inclined toward opposite directions, and the first vortex member and the second vortex member is disposed between the venturi tube mechanism and the outlet.

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.

Provided is an emulsion matrix ground station with intrinsic safety, which relates to the technical field of emulsion matrix preparation process and apparatus of mobile ground auxiliary equipment in civil explosive industry. The emulsion matrix ground station may include a water phase tank, an oil phase tank, a water phase pump, an oil phase pump and a static emulsification device. The water phase pump may have an inlet connected to an outlet of the water phase tank by a pipeline, and an outlet connected to a water phase inlet of the static emulsification device by a pipeline. The oil phase pump may have an inlet connected to an outlet of the oil phase tank by a pipeline, and an outlet connected to an oil phase inlet of the static emulsification device by a pipeline.

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.

A continuous chemical process is modified to allow parts thereto to be processed one quantum of matter at a time. This offers precision and efficiency beyond what is possible with the continuous mode. This Quantum Fluid Operation (QFO) is applied to basic unit operations: mixing, reacting, separating.

Provided is a method for manufacturing a microbicide having high microbicidal performance for eradicating microbes. This method for manufacturing a microbicide comprises: a step for preparing an inorganic aqueous solution containing an inorganic component having seawater as a raw material thereof, an ozone mixing step for mixing ozone into the inorganic aqueous solution, and a stirring step for stirring the inorganic aqueous solution mixed with ozone and passing through a bubble generation nozzle; wherein, the temperature of the inorganic aqueous solution in the ozone mixing step and the stirring step is 0° C. to 30° C., and when the amount of inorganic aqueous solution treated in the ozone mixing step and the stirring step is defined as X liters and the treatment rate of the ozone mixing step and the stirring step is defined as Y liters/minute, then the microbicide is manufactured by alternately repeating the ozone mixing step and the stirring step for A.Math.X/Y minutes (where A is 30 or more).

There is provided a mixing device (2) for a beverage and CO2 gas for producing carbonated beverage. The mixing device (2) having a mixing channel (4) extending in a main direction (10). The mixing channel (4) includes: wide channel sections (16) and narrow channel sections (18) along the main direction (10). The mixing channel (4) has an elongated cross section seen in a direction perpendicular to the main direction (10). At least a first delimiting surface (22) of the mixing channel (4) is provided with protrusions (20) extending at least partially along the first delimiting surface (22) in a direction across the mixing channel (4) and protruding towards a second delimiting surface (24) of the mixing channel (4) to form the narrow channel sections (18). A turbulent flow of beverage is created by the narrow and wide channel sections. Further a carbonator for producing carbonated beverage, an appliance having a carbonator, and a method of producing a carbonated beverage are provided.