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    公开(公告)号:BR0208180A

    公开(公告)日:2005-08-16

    申请号:BR0208180

    申请日:2002-02-21

    Abstract: Methods and apparatus for processing materials employ two cylindrical members, one mounted within the other, defining an annular processing chamber. Preferably, the outer member is stationery (stator), while the inner rotates (rotor). The radial spacing between the stator inner surface and the rotor outer surface is equal to or less than the back-to-back radial thicknesses of the two laminar boundary layers formed on the two surfaces by the material being processed. The surfaces are made smooth, as by buffing to a finish of not more than 10 microinches. This structure inhibits formation of Taylor vortices in the processing passage, which cause unstable flow and consequent incomplete mixing. Preferably, the relative velocity between rotor and stator surfaces is at least 1.2 meters per second. The surfaces may be coated with catalysts. Transducers may be provided to apply processing energy, such as microwave, light or ultrasonic waves, through the stator wall.

    METODO Y APARATO PARA PROCESAR MATERIALES..

    公开(公告)号:MXPA03008148A

    公开(公告)日:2004-03-10

    申请号:MXPA03008148

    申请日:2002-02-21

    Inventor: HOLL RICHARD A

    Abstract: Metodos y aparatos para procesar materiales que emplean dos miembros cilindricos uno montado dentro del otro, definiendo una camara de procesamiento anular (44). Preferentemente, el miembro exterior es estacionario (estator) (30), mientras que el interior rota (rotor) (42). El espacio radial (44) entre la superficie interna (46) del estator (30) y la superficie externa (46) del rotor (42) es igual o menor que el espesor radial espalda con espalda de las dos capas limite laminares formadas sobre las superficies (46).

    APPARATUS FOR TRANSFER OF HEAT ENERGY BETWEEN A BODY SURFACE AND HEAT TRANSFER FLUID

    公开(公告)号:AU2003288916A1

    公开(公告)日:2004-04-23

    申请号:AU2003288916

    申请日:2003-10-03

    Inventor: HOLL RICHARD A

    Abstract: In apparatus for heat exchange to and from a body surface using a heat transfer liquid a heat exchanger comprises a plurality of elements within a casing connected axially against one another with spacer tube elements. Each element has its periphery spaced from the body surface to provide a flow gap for heat transfer fluid in heat exchange contact with the surface. The element have plenums separating each from one another forming connecting flow spaces for the heat transfer liquid between the heat transfer flow gap and inlet and outlet passages passing through the body. A preferred apparatus is a cylindrical rotor within a cylindrical stator with an annular processing space between them, the rotor containing a stack of heat exchange elements of the respective shape permitting high heat flux rates and uniform temperature distribution over the total rotor heat transfer surface.

    Process for high shear gas-liquid reactions

    公开(公告)号:AU7023901A

    公开(公告)日:2002-01-30

    申请号:AU7023901

    申请日:2001-06-28

    Inventor: HOLL RICHARD A

    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.

    Electromagnetic wave assisted chemical processing

    公开(公告)号:AU6144401A

    公开(公告)日:2002-01-21

    申请号:AU6144401

    申请日:2001-05-10

    Inventor: HOLL RICHARD A

    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.

    Composites of powdered fillers and polymer matrix and process for preparing them

    公开(公告)号:AU5902300A

    公开(公告)日:2001-01-22

    申请号:AU5902300

    申请日:2000-07-01

    Inventor: HOLL RICHARD A

    Abstract: Composite materials comprising at least 60 volume %, preferably 70 volume %, of particles of finely powdered filler material in a matrix of poly(arylene ether) polymer material are made by forming a mixture of the components, forming the required bodies therefrom, and then heating and pressing the bodies to a temperature sufficient to melt the polymer and to a pressure sufficient to disperse the melted polymer into the interstices between the filler particles. Surprisingly these polymer materials can only be effective as bonding materials when the solids content is as high as that specified, since with lower contents the resultant bodies are too friable. This is completely contrary to accepted prior art practice which considers that composites are progressivly weakened as the solids content is increased, so that such content must be limited. In processes to obtain as complete a dispersion of the components as possible they are individually dispersed in a liquid dispersion medium containing the polymer together with necessary additives, each mixture being ground if required to obtain a desired particle size, the mixtures are mixed, again ground to produce thorough dispersion, are separated from the liquid dispersion medium and green articles formed from the resulting pasty mixture. The green articles are then heated and pressed as described above. Mixtures of different filler materials may be used to tailor the electrical and physical properties of the final materials. The articles preferably comprise substrates for use in electronic circuits.

    METHODS AND APPARATUS FOR HIGH-SHEAR MIXING AND REACTING OF MATERIALS

    公开(公告)号:AU2003266154A1

    公开(公告)日:2004-04-30

    申请号:AU2003266154

    申请日:2003-09-11

    Inventor: HOLL RICHARD A

    Abstract: Methods and apparatus for high shear reacting and/or mixing of moving fluid streams of materials employ an interdiffusing and reacting zone formed in the space between two stationary surfaces, the surfaces being spaced apart a maximum distance of the sum of the thicknesses of the back-to-back boundary layers of the materials and/or resulting materials on the surfaces, to a value such that any third layer between the two boundary layers is too thin to support agitation characterized by turbulent convection and/or to cause channeling. The materials are interdiffused by high speed laminar shear produced by the flow of the materials rather than mixed by macroscopic convection, the materials being driven by high velocity inlet feeds, auxiliary high pressure gas flow pumped into the reaction/mixing zone, or auxiliary high pressure gas flow created as an evolving gaseous byproduct of any chemical reaction that may occur.

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