The invention relates to a device (100) for injecting and mixing a reactive fluid in a flow of a process fluid for the preparation of polyolefins, comprising: an annular part (101) having an outer wall and an inner wall (102), wherein the annular part (101) is arranged for having a flow of the process fluid in a transport direction (F); a support structure (103) connected to the inner wall (102) of the annular part (101); an injector part (104) mounted on the support structure (103), wherein the injector part (104) is cylindrically shaped and wherein the cylindrical axis A-A of the injector part is parallel with a central axis of the annular part and is in the central part of the annular part (101); wherein the injector part (104) comprises a nozzle (105) for injecting the reactive fluid, disposed at a downstream side of the injector part relative to the transport direction (F); a supply channel (106) extending from the outer wall of the annular part (101) through the support structure (103) to the nozzle (105) of the injector part (104), and wherein the annular part (101), the support structure (103) and the injector part (104) are made from a single piece of metal.

A chemical injection system for connection to a chemical tank and a process line includes a pump box configured to attach to the tank, the pump box including a body defining an interior, a pump assembly disposed within the interior of the body of the pump box, and an injection assembly configured to be fluidly coupled to the pump box. The injection assembly includes an injection lance having a flange and a stem, a first seal abutting a first side of the flange of the injection lance, and a second seal abutting a second side of the flange of the injection lance.

The present invention relates to a spraying assembly comprising an injection device, a first hydraulic circuit for conveying carrier liquid to a spray nozzle, the first hydraulic circuit comprising, upstream of the spray nozzle, an injection section, a second hydraulic circuit for conveying the active substance to the injection device, under an injection pressure greater than the carrier liquid circulation pressure, the injection device comprising a direct dosing interface comprising a plurality of through-holes in the injection section of the first hydraulic circuit, and the injection device further comprising at least one corresponding actuator configured to open or close each through-hole so as to allow a determined dosing of active substance to pass through at least one open hole to be injected into the carrier liquid stream.

A fiber bundle liquid-liquid contactor may comprise: a vessel comprising: a first inlet; a second inlet; a mixing zone arranged in the vessel to receive a first liquid from the first inlet and a second liquid from the second inlet, wherein the mixing zone comprises an inductor fluidically coupled to the inlet for the second liquid; and an extraction zone comprising a fiber bundle arranged in the vessel to receive the first liquid and the second liquid from the mixing zone.

A mixing apparatus for in-line mixing of fluids is described herein. In some embodiments, the mixing apparatus comprises a mixer body defining a plurality of support arms and a substantially conical flow member that can be coupled to the plurality of support arms. In other embodiments, the mixer body defines at least one body injection passage extending from an injection inlet on the exterior surface of the mixer body through one of the support arms; the flow member defines a flow member injection passage extending through at least a portion of the flow member to an injection outlet defined at the leading end or the peripheral surface of the flow member; and the flow member is coupled to the support arms such that the injection inlet is in fluid communication with the injection outlet via the mixer body injection passage and the flow member injection passage.

A spraying apparatus includes a spraying apparatus main body, a liquid introduction portion, a gas introduction portion, a gas-liquid spout portion, a liquid inlet, a gas inlet, a tubular flow passage, a spout, a flow passage having a taper, a straightener, and a projection portion. The liquid inlet allows a liquid flow to enter a gas-liquid mixer which is a space inside the annular gas introduction portion. The gas inlet allows a gas flow to enter the gas-liquid mixer. The straightener has an opening having an uneven shape provided in the flow passage having the taper. The projection portion is provided in the liquid introduction portion, protrudes to the gas-liquid mixer, and forms the straightener and a straightening outlet.

A counterflow mixing device for a process chamber is disclosed, comprising an injection tube that introduces a fluid in a manner counter to a flow of a post-plasma gas mixture traveling downward from a plasma source. The invention allows for proper mixing of the fluid as well as avoiding recombination of generated ions and radicals.

A method for preparing a dispersion of nanoparticles of a solid organic dye or pigment in a liquid carrier, and dispersions formed by such a method. The method includes continuously mixing: at least one solution or slurry containing a reactant precursor for the solid organic dye or pigment in an organic or other solvent with the liquid carrier in a counter current mixing reactor to obtain reaction of the reactant precursor and formation of the solid organic dye or pigment as a dispersion of nanoparticles in the liquid carrier and solvent mixture; optionally, removing unreacted reactant precursor and/or by-product from the dispersion when present; and optionally, concentrating the dispersion.

Provided is a chemical injection system for connection to a chemical tank and a process line. The system includes a pump box configured to attach to the tank, the pump box including a body defining an interior, a pump assembly disposed within the interior of the body of the pump box, and an injection assembly configured to be fluidly coupled to the pump box. The injection assembly includes an injection lance having a flange and a stem, a first seal abutting a first side of the flange of the injection lance, and a second seal abutting a second side of the flange of the injection lance.

A gas-air mixer assembly is described that helps mix fuel and air within an HVAC system. The mixer assembly can also achieve lower pressure drops than seen in other solutions. A mixer assembly can comprise a mixer body through which air is supplied. An orifice body can extend into the stream of air within the mixer body and then point upstream. A tip of the orifice body, disposed in the airstream, can provide fuel through one or more orifices. The flow of air around the orifice body helps to cause mixing, as does an elbow bend in the mixer body, downstream of the orifice body.