A carbonylation process for producing acetic acid including: (a) carbonylating methanol or its reactive derivatives in the presence of a Group VIII metal catalyst and methyl iodide promoter to produce a liquid reaction mixture including acetic acid, water, methyl acetate and methyl iodide; (b) feeding the liquid reaction mixture at a feed temperature to a flash vessel which is maintained at a reduced pressure; (c) heating the flash vessel while concurrently flashing the reaction mixture to produce a crude product vapor stream, wherein the reaction mixture is selected and the flow rate of the reaction mixture fed to the flash vessel as well as the amount of heat supplied to the flash vessel is controlled such that the temperature of the crude product vapor stream is maintained at a temperature less than 90 F. cooler than the feed temperature of the liquid reaction mixture to the flasher and the concentration of acetic acid in the crude product vapor stream is greater than 70% by weight of the crude product vapor stream.

A liquid treatment apparatus (10) for processing a liquid includes an inlet nozzle (12) having an orifice (16) for directing a flow of liquid through the orifice (16) to define a fluid jet, and a concial diffuser (18) including a tip (20), a base portion (22), and a curved surface (26) therebetween. The conical diffuser (18) is generally aligned with the orifice (16) such that the fluid jet impacts upon the tip (20) of the conical diffuser (18). Moreover, the curvature of the curved surface (26) is selected to maintain a substantially constant Froude number of the liquid along the conical diffuser (18).

The present invention provides an annular centrifugal contactor, having a housing adapted to receive a plurality of flowing liquids; a rotor on the interior of the housing; an annular mixing zone, wherein the annular mixing zone has a plurality of fluid retention reservoirs with ingress apertures near the bottom of the annular mixing zone and egress apertures located above the ingress apertures of the annular mixing zone; and an adjustable vane plate stem, wherein the stem can be raised to restrict the flow of a liquid into the rotor or lowered to increase the flow of the liquid into the rotor.

Disclosed herein are compositions, methods and systems for the processing of chemical reactions, such as the synthesis of polymers.

The present disclosure relates to an apparatus and process for forming medical devices from an injectable composition. The apparatus includes a supply assembly configured to maintain and selective dispense a first precursor and a second precursor, a mixing assembly configured to mix the first and second precursors, and at least one catalyzing element including a transition metal ion to aid in the polymerization of the first and second precursors. The process includes dispensing a volume of the first precursor and a volume of the second precursor into a mixing assembly and mixing the first and second precursors. The first and second precursors each possess a core and at least one functional group known to have click reactivity with each other. The mixed precursors are contacted with a transition metal catalyst to produce a flowable composition for use as a medical device.

Provided is a PET chemical recycling method. The PET chemical recycling method includes the following: adding a PET chemical recycling ion catalyst material for PET chemical recycling to PET waste and ethylene glycol; heating and stirring to obtain depolymerized and decolorized bis(2-hydroxyethyl)terephthalate (BHET); and filtering and recycling the ion catalyst material for PET chemical recycling. The PET chemical recycling ion catalyst material is a bisalkylimidazole-metal tetrachloride ionic liquid grafted on a porous carrier.

Disclosed is a thermostatic box for preparing a hydrogel by a freeze-thaw process and a preparation method thereof. The thermostatic box includes a box body. A top of the box body is provided with an upper cover plate. A front side of the box body is provided with a front cover plate. Air outlet holes are disposed in the upper cover plate. A storage chamber and a drainage chamber are disposed in box body. The storage chamber is located on an upper side of the drainage chamber. Porous storage platforms are disposed in the storage chamber. A side of the plurality of porous storage platforms is provided with a first blowing mechanism. An area of a right side of the drainage chamber and a lower side of the porous storage platforms is provided with a second blowing mechanism. A side of the drainage chamber is provided with a drainage hole.

Disclosed is a thermostatic box for preparing a hydrogel by a freeze-thaw process and a preparation method thereof. The thermostatic box includes a box body. A top of the box body is provided with an upper cover plate. A front side of the box body is provided with a front cover plate. Air outlet holes are disposed in the upper cover plate. A storage chamber and a drainage chamber are disposed in box body. The storage chamber is located on an upper side of the drainage chamber. Porous storage platforms are disposed in the storage chamber. A side of the plurality of porous storage platforms is provided with a first blowing mechanism. An area of a right side of the drainage chamber and a lower side of the porous storage platforms is provided with a second blowing mechanism. A side of the drainage chamber is provided with a drainage hole.

A method and a device are disclosed for converting at least one reactant into a reaction product and separating the at least one reactant. The device includes a vessel with a vessel inner volume and a confinement, submerged in the vessel inner volume, that provides a confinement inner volume in fluid connection with the vessel inner volume. First and seconds fluids, with a respective, higher first density and a lower, second density form respective lower and upper phases in the vessel inner volume. A third fluid with a third density higher than that of the second fluid forms a lower layer in the confinement inner volume, relative to an upper layer formed by the second fluid. The third fluid may be the same as or different from, and is physically separated from, the first fluid. At least one of the first, second, and third fluids is at most partly miscible with the other two, but preferably immiscible. The at least one reactant and the reaction product have different affinities for at least two of the first, second, and third fluids, and at least one of the first and third fluid contains a fourth phase which is a solid or semi solid and is capable of promoting the conversion.

A radial flow processing device includes a body with an inner chamber, a pair of inner and outer concentric tubes extending into the body, and a processing disk containing a central opening through which the inner tube extends, the disk being connected with the inner tube. The body has a top wall, a bottom wall, and at least one side wall which define the inner chamber. The bottom wall, top wall, or both, contain at least one opening through which at least one tube extends. A diameter of the inner tube is less than a diameter of the outer tube such that there is a space between both tubes, and a diameter of the disk is less than a width of the body.