METHODS OF MAKING PYRROLIDONES
    53.
    发明专利

    公开(公告)号:MY134290A

    公开(公告)日:2007-11-30

    申请号:MYPI20034665

    申请日:2003-12-05

    Abstract: THE PRESENT INVENTION PROVIDES METHODS FOR MAKING N-METHYLPYRROLIDINE AND ANALOGOUS COMPOUNDS VIA HYDROGENATION. NOVEL CATALYSTS FOR THIS PROCESS, AND NOVEL CONDITIONS/YIELDS ARE ALSO DESCRIBED. OTHER PROCESS IMPROVEMENTS MAY INCLUDE EXTRACTION AND HYDROLYSIS STEPS. SOME PREFERRED REACTIONS TAKE PLACE IN THE AQUEOUS PHASE. STARTING MATERIALS FOR MAKING N-METHYLPYRROLIDINE MAY INCLUDE SUCCINIC ACID, N-METHYLSUCCINIMIDE, AND THEIR ANALOGS.

    54.
    发明专利
    未知

    公开(公告)号:DE69934231T2

    公开(公告)日:2007-03-29

    申请号:DE69934231

    申请日:1999-07-27

    Abstract: The present invention is a method and apparatus (vessel) for providing a heat transfer rate from a reaction chamber through a wall to a heat transfer chamber substantially matching a local heat transfer rate of a catalytic thermal chemical reaction. The key to the invention is a thermal distance defined on a cross sectional plane through the vessel inclusive of a heat transfer chamber, reaction chamber and a wall between the chambers. The cross sectional plane is perpendicular to a bulk flow direction of the reactant stream, and the thermal distance is a distance between a coolest position and a hottest position on the cross sectional plane. The thermal distance is of a length wherein the heat transfer rate from the reaction chamber to the heat transfer chamber substantially matches the local heat transfer rate.

    ACTIVE MICROCHANNEL HEAT EXCHANGER
    55.
    发明专利

    公开(公告)号:CA2295031C

    公开(公告)日:2007-01-30

    申请号:CA2295031

    申请日:1998-06-19

    Abstract: The present invention is an active microchannel heat exchanger with an activ e heat source and with microchannel architecture. The active microchannel heat exchanger has (a) an exothermic reaction chamber (100) having a first shell (102) defining an exothermic reactant flow path and exhaust flow path, the first shell (102) penetrated with at least one inlet (104), and an exhaust outlet (106); (b) an exhaust chamber (108) having a second shell (110) with a containment wall (111) defining an exhaust flow path connected to said exhaust outlet (106), said second shell (110) penetrated by an exhaust chamber outlet (112) , the exhaust chamber (108) having microchannels through which an exhaust flows; and (c) a heat exchanger chamber (114) in thermal contact with the exhaust chamber, said heat exchanger chamber (114) having a third shell (116) defining a working fluid flow path and havi ng a third exterior surface (118) penetrated by a working fluid inlet (120) and a working fluid outlet (122) through which a working fluid flows; wherein (d) heat from the exothermic reaction chamber (100) is converted by an exothermic reaction exhaust through the exhaust chamber (108) and by conduction through the containment wall (111) to the working fluid in the heat exchanger chamber (114) thereby raising a temperatureof the working fluid. The invention is particularly useful as a liquid fluid vaporizer and/or a steam generator for fuel cell power systems, and as a heat source for sustaining endothermic chemical reactions and initiating exothermic reactions.

    56.
    发明专利
    未知

    公开(公告)号:DE69934231D1

    公开(公告)日:2007-01-11

    申请号:DE69934231

    申请日:1999-07-27

    Abstract: The present invention is a method and apparatus (vessel) for providing a heat transfer rate from a reaction chamber through a wall to a heat transfer chamber substantially matching a local heat transfer rate of a catalytic thermal chemical reaction. The key to the invention is a thermal distance defined on a cross sectional plane through the vessel inclusive of a heat transfer chamber, reaction chamber and a wall between the chambers. The cross sectional plane is perpendicular to a bulk flow direction of the reactant stream, and the thermal distance is a distance between a coolest position and a hottest position on the cross sectional plane. The thermal distance is of a length wherein the heat transfer rate from the reaction chamber to the heat transfer chamber substantially matches the local heat transfer rate.

Patent Agency Ranking