Abstract:
A reactor produces a gas-in-liquid emulsion for providing increased interfacial contact area between the liquid and the gas for improved reaction of the gas with the liquid, or more rapid solution or reaction of a difficulty soluble or immiscible gas in or with a liquid. The reactor is suitable for a continuous or batch type process. Rotor and stator cylindrical members are mounted for rotation relative to one another and have opposing surfaces spaced to form an annular processing passage. The gap distance between the opposing surfaces and the relative rotation rate of the cylindrical members are such as to form a gas-in-liquid emulsion of the gas in the liquid. The liquid and gas pass through the processing passage, changing into the gas-in-liquid emulsion.
Abstract:
A window allows the introduction of radiation energy into an annular processing chamber (44) filled with a material to be processed. The chamber is formed from coaxial cylinder members (30,32) rapidly rotating relative to one another. The chamber (44) can be thin enough so that it is short compared to the penetration depth of the radiation through the material, providing even exposure of the material to the radiation. Also, eddies created in the material by the relative rotation enhances the even exposure. When the material inside the annular processing chamber (44) is opaque, resulting in an insignificant penetration depth, the eddies still insure that the material is evenly exposed to the irradiation.
Abstract:
2142193 9404275 PCTABS00030 High-shear treated materials are passed through a high-shear treatment zone which allows the coexistence of free supra-Kolmogoroff eddies larger than the smallest possible Kolmogoroff eddy diameter and forced sub-Kolmogoroff eddies smaller than this diameter. This zone includes a subsidiary higher-shear zone for suppressing these free eddies. The passage walls (40, 44, 102, 108) move relative to one another transverse to the flow to force the simultaneous development of supra-Kolmogoroff and sub-Kolmogoroff eddies while maintaining liquid films adherent to the passage surfaces. The movement produces only forced sub-Kolmogoroff eddies in the susidiary zone while maintaining a non-turbulent flow. Ultrasonic oscillations (52) may be applied to cause elastohydrodynamic pressure and viscosity increases and/or production of smaller sub-Kolmogoroff eddies. One apparatus includes an inner cylinder rotatable (46) inside a hollow outer cylinder (38), another consists of two circular coaxial plates, and the rotational axis can be vertical or horizontal.
Abstract:
A reactor produces a gas-in-liquid emulsion for providing increased interfacial contact area between the liquid and the gas for improved reaction of the gas with the liquid, or more rapid solution or reaction of a difficulty soluble or immiscible gas in or with a liquid. The reactor is suitable for a continuous or batch type process. Rotor and stator cylindrical members are mounted for rotation relative to one another and have opposing surfaces spaced to form an annular processing passage. The gap distance between the opposing surfaces and the relative rotation rate of the cylindrical members are such as to form a gas-in-liquid emulsion of the gas in the liquid. The liquid and gas pass through the processing passage, changing into the gas-in-liquid emulsion.
Abstract:
A window allows the introduction of radiation energy into an annular processing chamber (44) filled with a material to be processed. The chamber is formed from coaxial cylinder members (30,32) rapidly rotating relative to one another. The chamber (44) can be thin enough so that it is short compared to the penetration depth of the radiation through the material, providing even exposure of the material to the radiation. Also, eddies created in the material by the relative rotation enhances the even exposure. When the material inside the annular processing chamber (44) is opaque, resulting in an insignificant penetration depth, the eddies still insure that the material is evenly exposed to the irradiation.
Abstract:
New methods of operating surface reactors, and such reactors, particularly spinning disk reactors, require that a first reactant is fed to a reactor surface (20) and forms a thin radially outward moving film (60) thereon in a reaction passage (42) formed between the reaction surface (20) and a parallel, closely spaced (less than 1 mm) retaining surface (40). The passage thickness is precisely controllable and the surfaces (20, 40) move relative to one another so that strong shear is applied to the material between them. A second reactant is fed to the surface (20) as a second thin film (65) that as it enters the first film (60), preferably perpendicularly, it is immediately merged therewith along a correspondingly very narrow interaction line (66) by the shear at a rate such as to break up molecular clusters in the films, so that their molecules can aggressively and completely interact by forced interdiffusion. In spinning disk (18) apparatus the first film (60) is fed along the spin axis (14), while subsequent films (65, etc.) are fed at respective distances from the axis (14) such that there is adequate shear for the molecular cluster disruption. Preferably each film (65, etc.)after the first (60) is fed into the reaction passage (42) through a respective thin annular nozzle producing a thin circular film (65) that simultaneously merges with the first film (60) along its entire length.
Abstract:
In methods and apparatus for heat exchange to and from a body surface using a heat transfer fluid the fluid is impinged on the surface from a plurality of delivery inlets in the form of a corresponding plurality of spaced delivery streams and is immediately removed from the plenum upon rebounding from the surface through a plurality of spaced removal outlets distributed among the delivery streams, thus establishing corresponding very short uninterrupted flow paths between each inlet and its removal outlet/s. Preferably, the fluid stream velocity is sufficient for it to penetrate and disrupt a fluid boundary layer on the body surface. Each delivery inlet may have its outlet to the surface spaced from 0.001cm to 0.2cm (0.0004in to 0.08in) from that surface. Each delivery inlet may produce a jet impinging the surface of from 0.3cm to 1.5cm (0,12in to 0.6in) diameter. The delivery streams may impinge a flat body surface from a right angle to an acute angle, while when the body surface is curved the delivery streams may impinge from a right angle to one that is tangential thereto. A particular apparatus with which the heat exchanger may be used has a cylindrical rotor rotating within a cylindrical stator so that the body surface is cylindrical; the rotor diameter may be from 0.1cm to 500cm (0.04in to 200ins).
Abstract:
New methods of operating surface reactors, and such reactors, particularly spinning disk reactors, require that a first reactant is fed to a reactor surface (20) and forms a thin radially outward moving film (60) thereon in a reaction passage (42) formed between the reaction surface (20) and a parallel, closely spaced (less than 1 mm) retaining surface (40). The passage thickness is precisely controllable and the surfaces (20, 40) move relative to one another so that strong shear is applied to the material between them. A second reactant is fed to the surface (20) as a second thin film (65) that as it enters the first film (60), preferably perpendicularly, it is immediately merged therewith along a correspondingly very narrow interaction line (66) by the shear at a rate such as to break up molecular clusters in the films, so that their molecules can aggressively and completely interact by forced interdiffusion. In spinning disk (18) apparatus the first film (60) is fed along the spin axis (14), while subsequent films (65, etc.) are fed at respective distances from the axis (14) such that there is adequate shear for the molecular cluster disruption. Preferably each film (65, etc.) after the first (60) is fed into the reaction passage (42) through a respective thin annular nozzle producing a thin circular film (65) that simultaneously merges with the first film (60) along its entire length.
Abstract:
PCT No. PCT/US93/07931 Sec. 371 Date Feb. 21, 1995 Sec. 102(e) Date Feb. 21, 1995 PCT Filed Aug. 24, 1993 PCT Pub. No. WO94/04275 PCT Pub. Date Mar. 3, 1994High-shear treated materials are passed through a high-shear treatment zone which allows the coexistence of free supra-Kolmogoroff eddies larger than the smallest possible Kolmogoroff eddy diameter and forced sub-Kolmogoroff eddies smaller than this diameter. This zone includes a subsidiary higher-shear zone for suppressing these free eddies. The passage walls (40, 44, 102, 108) move relative to one another transverse to the flow to force the simultaneous development of supra-Kolmogoroff and sub-Kolmogoroff eddies while maintaining liquid films adherent to the passage surfaces. The movement produces only forced sub-Kolmogoroff eddies in the subsidiary zone while maintaining a non-turbulent flow. Ultrasonic oscillations (52) may be applied to cause elastohydrodynamic pressure and viscosity increases and/or production of smaller sub-Kolmogoroff eddies. One apparatus includes an inner cylinder rotatable (46) inside a hollow outer cylinder (38), another consists of tow circular coaxial plates, and the rotational axis can be vertical or horizontal.
Abstract:
The invention provides fluid handling apparatus which may be heat exchange apparatus or fluid reaction apparatus. The apparatus is provided with an interrupter structure for disrupting the fluid boundary layers at the walls of the apparatus and promoting mixing of the separated boundary layers with the adjacent core layers. One interrupter structure comprises a plurality of longitudinally-spaced interrupter elements mounted on a core rod, each element comprising a plurality of blade-like members each of at least approximately spherical segment profile in side elevation, the members extending mutually radially outward relative to one another to touch or nearly touch the said surface or surfaces adjacent the elements. The elements are spaced longitudinally from one another the distance required to provide wake interference flow of the fluid, wherein the vortex upstream of one element cooperates with the vortex downstream of the next element in the fluid path. In a shell and tube type exchanger the bladed type of structure may be provided in the tubes interiors, while a spherical type of interrupter structure is provided in the shell contacting the tube exteriors.