Regeneration of halogen promoted bimetallic reforming catalyst
    1.
    发明授权
    Regeneration of halogen promoted bimetallic reforming catalyst 失效
    卤素促进双金属改性催化剂的再生

    公开(公告)号:US3835063A

    公开(公告)日:1974-09-10

    申请号:US2316070

    申请日:1970-03-27

    申请人: MOBIL OIL CORP

    发明人: DAVIS F DERR W GINTER E

    摘要: A HALOGENATED REFORMING CATALYST COMPRISING PLATINUM WHICH HAS BECOME DEACTIVATED WITH CARBONACEOUS DEPOSITS DURING ON-STREAM REFORMING IS REGENERATED BY THE COMBINATION OF (1) REMOVING CARBONACEOUS MATERIAL BY BURNING WITH AN OXYGEN CONTAINING GAS UNDER CONDITIONS TO AVOID HEAT DAMAGE TO THE CATALYST, (2) HEATING THE CATALYST ITH AIR TO A TEMPERATURE OF ABOUT 900*F, (3) SELECTIVELY CHLORINATING EACH CATALYST BED WITH A MOISTURE SATURATED AIR STREAM TO A PREDETERMINED CHLORIDE LEVEL, (4) REDUCING THE CHLORIDED CATALYST WITH HYDROGEN RICH GAS FOR A PERIOD OF TIME IN THE RANGE OF 1 TO 4 HOURS, (5) ADDING SULFUR TO EACH CATALYST BED THEROETICALLY SUFFICIENT TO SULFIDE THE PLATINUM COMPONENT OF THE CATALYST AND (6) INITIATING ON-STREAM REFORMING OF NAPHTHA IN THE PRESENCE OF ADDED HYDROGEN SULFIDE.