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    DICARBOXYLIC ACID PRODUCTION WITH ENHANCED ENERGY RECOVERY
    5.
    发明公开
    DICARBOXYLIC ACID PRODUCTION WITH ENHANCED ENERGY RECOVERY 有权
    具有提高的能量回收二元酸生产

    公开(公告)号：EP2349971A1

    公开(公告)日：2011-08-03

    申请号：EP09745152.0

    申请日：2009-10-22

    申请人： GRUPO PETROTEMEX, S.A. DE C.V.

    发明人： FOGLE, Raymond, Elbert, III ,  SHEPPARD, Ronald, Buford ,  UPSHAW, Timothy, Alan ,  WONDERS, Alan, George

    IPC分类号： C07C51/265 ,  C07C63/26 ,  C07C63/15

    CPC分类号： C07C51/265 ,  Y02P20/51 ,  C07C63/15 ,  C07C63/26

    摘要： The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off- gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant. Optionally, PET off-gas containing the water of PET formation is treated in a shared thermal oxidative destruction unit, effectively eliminating normal flow of liquid wastewater effluent from a combined pX-to-TPA-to-PET plant.

    DICARBOXYLIC ACID PRODUCTION WITH SELF-FUEL OXIDATIVE DESTRUCTION
    6.
    发明公开
    DICARBOXYLIC ACID PRODUCTION WITH SELF-FUEL OXIDATIVE DESTRUCTION 有权
    WITH SELF-FUEL氧化分解二元酸生产

    公开(公告)号：EP2344440A1

    公开(公告)日：2011-07-20

    申请号：EP09744230.5

    申请日：2009-10-22

    申请人： GRUPO PETROTEMEX, S.A. DE C.V.

    发明人： FOGLE, Raymond, Elbert, III ,  SHEPPARD, Ronald, Buford ,  UPSHAW, Timothy, Alan ,  WONDERS, Alan, George

    IPC分类号： C07C51/265 ,  C07C63/26 ,  C07C63/15 ,  C07C63/24 ,  C07C63/16

    CPC分类号： C07C51/265 ,  C07C63/26 ,  C07C63/15

    摘要： The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant. Optionally, PET off-gas containing the water of PET formation is treated in a shared thermal oxidative destruction unit, effectively eliminating normal flow of liquid wastewater effluent from a combined pX-to-TPA-to-PET plant.

    DICARBOXYLIC ACID PRODUCTION WITH MINIMAL WASTEWATER GENERATION
    9.
    发明公开
    DICARBOXYLIC ACID PRODUCTION WITH MINIMAL WASTEWATER GENERATION 有权
    污水的最小的生产DICARBONSÄUREHERSTELLUNG

    公开(公告)号：EP2344439A1

    公开(公告)日：2011-07-20

    申请号：EP09745151.2

    申请日：2009-10-22

    申请人： GRUPO PETROTEMEX, S.A. DE C.V.

    发明人： FOGLE, Raymond, Elbert, III ,  SHEPPARD, Ronald, Buford ,  UPSHAW, Timothy, Alan ,  WONDERS, Alan, George

    IPC分类号： C07C51/265 ,  B01D3/00

    CPC分类号： C07C51/265 ,  C07C63/24 ,  C07C63/26 ,  C07C63/15

    摘要： The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off- gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant. Optionally, PET off-gas containing the water of PET formation is treated in a shared thermal oxidative destruction unit, effectively eliminating normal flow of liquid wastewater effluent from a combined pX-to-TPA-to-PET plant.