A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.

A fiber bundle contactor may include a vessel including a first inlet; a second inlet; a mixing zone arranged in the vessel to receive a first fluid from the first inlet and a including fluid from the second inlet, wherein the mixing zone comprises a perforated plate assembly comprising a plate, a plurality of openings in the plate, and a plurality of riser pipes that extend from the plate and arranged to allow fluid flow through additional openings in the plate; and an extraction zone including a fiber bundle arranged in the vessel to receive the first fluid and the second fluid from the mixing zone.

In one example, a liquid mixture nozzle for flowing a liquid mixture therethrough includes a body having a flow inlet and a flow outlet. The flow inlet is configured to couple to a first piece of piping and the flow outlet is configured to couple to a second piece of piping. The liquid mixture nozzle also includes a converging section having a decreasing diameter positioned adjacent the flow inlet, an orifice positioned at a narrow end of the converging section, an intermediate section having a constant diameter positioned adjacent the orifice, a diverging section having an increasing diameter positioned adjacent the intermediate section and the flow outlet.

A jet-mixer for a fluid mixing system includes a housing including a mixer port formed in an inner surface of the housing, and a rotor rotatably disposed in the housing, the rotor including a rotor blade, wherein the rotor includes a first angular position in the housing restricting fluid flow through the mixer port, and a second angular position allowing fluid flow through the mixer port, wherein, in response to rotation of the rotor in the housing, the jet-mixer is configured to inject a first fluid jet through the mixer port into the passage of the fluid conduit that has a pulsed velocity profile.

A mixing apparatus and method of mixing additives are described herein. The mixing apparatus comprises a mixing conduit having a wall, a first end, and a second end opposite the first end. A fluid inlet is formed in the wall between the first end and the second end. A fluid outlet is also formed in the wall between the first end and the second end. An injection conduit fluidly connects the fluid inlet with the fluid outlet. A pump is disposed to pump fluid in the injection conduit. An additive conduit is fluidly coupled to the injection conduit.

A fiber bundle contactor may include a vessel including a first inlet; a second inlet; a mixing zone arranged in the vessel to receive a first fluid from the first inlet and a including fluid from the second inlet, wherein the mixing zone comprises a perforated plate assembly comprising a plate, a plurality of openings in the plate, and a plurality of riser pipes that extend from the plate and arranged to allow fluid flow through additional openings in the plate; and an extraction zone including a fiber bundle arranged in the vessel to receive the first fluid and the second fluid from the mixing zone.

A combination unit for vacuuming, cleaning and conditioning fluids. The unit may comprise a vacuum pump circuit and tank, a mixing tank and a centrifuge system. The invention also includes a combination tank comprising a vacuum tank partially incorporated into a mixing tank. A mixing tank may comprise a system of mixing conduits and mixing apparatuses to shear drilling fluids and additives, the mixing tank including a rounded base and a drain to cycle the fluid back through to the mixing tank.

An apparatus and corresponding process can be used for producing nanocarriers and or nanoformulations and corresponding process products. The apparatus is characterized by a vertical orientation of the feed conduits leading to active element. The feed conduits are nested within one another and are axially movable in terms of their orientation to one another. The process provides for the mixing of at least two liquid phases with different acidities. The volume flow of the first phase is greater than that of the second phase.

A jet-mixer for a fluid mixing system includes a housing including a mixer port formed in an inner surface of the housing, and a rotor rotatably disposed in the housing, the rotor including a rotor blade, wherein the rotor includes a first angular position in the housing restricting fluid flow through the mixer port, and a second angular position allowing fluid flow through the mixer port, wherein, in response to rotation of the rotor in the housing, the jet-mixer is configured to inject a first fluid jet through the mixer port into the passage of the fluid conduit that has a pulsed velocity profile.

An apparatus and corresponding process can be used for producing nanocarriers and or nanoformulations and corresponding process products. The apparatus is characterized by a vertical orientation of the feed conduits leading to active element. The feed conduits are nested within one another and are axially movable in terms of their orientation to one another. The process provides for the mixing of at least two liquid phases with different acidities. The volume flow of the first phase is greater than that of the second phase.