MICROCHANNEL REACTORS WITH TEMPERATURE CONTROL

    公开(公告)号:CA2478333C

    公开(公告)日:2013-10-15

    申请号:CA2478333

    申请日:2003-03-11

    Abstract: Microchannel devices and method of use are disclosed wherein a reaction microchamber (52) is in thermal contact with a heat exchange channel (61). An equilibrium limited exothermic chemical process occurs in the reaction microchamber (52). Sufficient heat is transferred to the heat exchange channels to substantially lower the temperature in the reaction microchamber (52) down its length to substantially increase at least one performance parameter of the exothermic chemical process relative to isothermal operation. Optionally, an endothermic reaction occurs in the heat exchange channel (61) which is sustained by the exothermic chemical process occurring the exothermic reaction chamber. Both the reaction chamber (52) and the heat exchange channel (61) can be of micro dimension. Catalyst (75) can be provided in the microchamber (52) in sheet form such that reactants flow by the catalyst sheet. A microchannel reactor (100) can be formed by integrally bonding an alternating stack of thin recessed sheets wherein the recesses in the sheets define the flow paths.

    Microchannel reactors with temperature control

    公开(公告)号:AU2003222279C1

    公开(公告)日:2009-04-09

    申请号:AU2003222279

    申请日:2003-03-11

    Abstract: Microchannel devices and method of use are disclosed wherein a reaction microchamber 52 is in thermal contact with a heat exchange channel 61 . An equilibrium limited exothermic chemical process occurs in the reaction microchamber 52 . Sufficient heat is transferred to the heat exchange channels to substantially lower the temperature in the reaction microchamber 52 down its length to substantially increase at least one performance parameter of the exothermic chemical process relative to isothermal operation. Optionally, an endothermic reaction occurs in the heat exchange channel 61 which is sustained by the exothermic chemical process occurring the exothermic reaction chamber. Both the reaction chamber 52 and the heat exchange channel 61 can be of micro dimension. Catalyst 75 can be provided in the microchamber 52 in sheet form such that reactants flow by the catalyst sheet. A microchannel reactor 100 can be formed by integrally bonding an alternating stack of thin recessed sheets wherein the recesses in the sheets define the flow paths.

    METHODS FOR FLUID SEPARATIONS, AND DEVICES CAPABLE OF SEPARATING FLUIDS

    公开(公告)号:CA2514069A1

    公开(公告)日:2004-08-12

    申请号:CA2514069

    申请日:2004-01-26

    Abstract: A laminated, multiphase condensor having wicking structures and gas flow channels is described. During operation, a fluid mixture passes in through fluid inlet (2) into header (4) where it is distributed into gas flow channe ls (6 and 6'). Coolant passes through elongated coolant slots (8) in cooling channel layer (10). The material surrounding the coolant slots (8) are the cooling channel walls. As the fluid mixture passes through the gas flow channels (6 and 6'), heat from the fluid is removed primary heat exchange surface (13) (this surface also is an exterior surface of a cooling channel wall) and a liquid condenses from the fluid mixtu~re, flows into wick (11), through optional pore throat (12) and into liquid flow channel (14). The figure is an exploded view and shows a separation between the wick and the pore throat; however, in typical operation the optional pore throat should contact the wick. The device can work under the influence of gravity, but, more typically, sucti is applied to pull liquid out through liquid outlet (1 6) . In a device with multiple liquid flow channels, an optional footer (not shown) may carry flow from multiple liquid flow channels. Gas from the gas flow channels (6 and 6') may pass through an optional gas footer and out through gas outlet (20).

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