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    Regeneration of a coke-deactivated catalyst comprising a combination of platinum rhenium and halogen with an alumina carrier material
    51.
    发明授权
    Regeneration of a coke-deactivated catalyst comprising a combination of platinum rhenium and halogen with an alumina carrier material 失效
    包含堇青石和卤素与氧化铝载体材料的组合的焦炭去活化催化剂的再生

    公开(公告)号：US3634292A

    公开(公告)日：1972-01-11

    申请号：US3634292D

    申请日：1969-02-06

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： HAYES JOHN C

    IPC: B01J23/96 ,  B01J38/44 ,  C10G35/09 ,  C10G49/06 ,  B01J11/02 ,  B01J11/80 ,  C10G35/06

    CPC classification number: B01J38/44 ,  B01J23/96 ,  C10G35/09 ,  C10G49/06

    Abstract: A DEACTIVATED HYDROCARBON CONVERSION CATALYST WHICH IS A COMBINATION OF A PLATINUM GROUP COMPONENT, A RHENIUM COMPONENT AND A HALOGEN COMPONENT WUTH AN ALUMINA CARRIER MATERIAL AND WHICH HAS BEEN DEACTIVATED BY A DEPOSITION OF CARBONACEOUS MATERIALS THEREON DURING A PREVIOUS CONTACTING WUTH A HYDROCARBON CHARGE STOCK AT AN ELEVATED TEMPERATURE, IS REGENERATED BY THE SEQUENTIAL STEPS OF: (1) BURNING CARBON THEREFROM AT A RELATIVELY LOW TEMPERATURE WITH A GAS STREAM CONTAINING H2 AND A SMALL AMOUNT OF O2, (2) CONTACTING AT A RELATIVELY HIGH TEMPERATURE WITH A GAS STREAM CONTAINING H2O AND A SMALL AMOUNT OF O2, (3) CONTACTING AT A RELATIVELY HIGH PERATURE WITH A GAS STREAM CONTAINING H2O AND A LARGE AMOUNT OF O2, (4) TREATING WITH A GAS STREAM CONTAINING HALOGEN OR A HALOGEN-CONTAINING COMPOUND AND WATER, AND (5) REDUCING WITH A DRY HYDROGEN STREAM. KEY FEATURES OF THE RESULTING METHOD ARE; (1) PRESENCE OF WATER IN THE GAS STREAM USED IN ALL STEPS EXCEPT THE REDUCTION STEP, (2) CAREFUL CONTROL OF THE TEMPERATURE DURING EACH STEP, (3) ADJUSTMENT OF HALOGEN CONTENT OF THE CATALYST PRIOR TO THE REDUCTION STEP, AND (4) CAREFUL CONTROL OVER THE COMPOSITION OF THE GAS STREAM USED IN THE VARIOUS STEPS THEREOF.

    Process for the reactivation of powdered carbon
    60.
    发明授权
    Process for the reactivation of powdered carbon 失效
    粉末碳的反应过程

    公开(公告)号：US3816338A

    公开(公告)日：1974-06-11

    申请号：US11321471

    申请日：1971-02-08

    Applicant: CPC INTERNATIONAL INC

    Inventor： CORSON F

    IPC: C01B31/08 ,  B01J11/02

    CPC classification number: C01B32/39

    Abstract: The present process describes a method for the reactivation of spent powdered carbon useful in the purification of wastewaters as well as other liquids. The present process obviates the disposal problems of spent carbon and the accompanying pollution of the environment. The present invention specifically discloses a continuous process for the reactivation of spent powdered carbon containing adsorbed organic matter, and having a particle size smaller than about 100 mesh, to a reactivation efficiency of at least about 80 percent, and a product yield of at least about 90 percent by weight which comprises dispersing the spent carbon in water to form an aqueous suspension having a solids content of from about 20 percent to about 35 percent by weight; atomizing the suspension with steam and passing the atomized suspension in an atmosphere substantially free of oxygen through a radiantly heated reactor vessel having a wall temperature of from about 1,200*F to about 1,900*F within a time period of from about 5 to about 30 seconds by spraying the suspension into a first zone of the reactor vessel capable of heating the suspension to a temperature of at least about 1,200*F within a period of from about 3 to about 15 seconds, and then passing the heated suspension into a second zone of the reactor vessel capable of maintaining the temperature of the suspension between about 1,200*F and about 1,900*F for the remainder of its residence within the reactor vessel to pyrolyze the impurities within the carbon; and thereafter recovering the reactivated carbon. The carbon to and from the reactor is handled in a slurry form, eliminating dust losses.

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