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1.发明授权
公开(公告)号：EP1080239B1
公开(公告)日：2003-12-17
申请号：EP99918949.1
申请日：1999-05-06
申请人： SHELL OIL COMPANY
CPC分类号： C22B7/008 , C22B7/009 , C22B34/325 , C22B34/345 , Y02P10/214 , Y02P10/23 , Y02P10/234
摘要： There is provided a process to reclaim molybdenum, vanadium and other hydrodesulfurisation metals from catalysts, said process comprising collecting one or more catalysts containing at least one metal sulfide; leaching the catalyst in an atmospheric alkaline leach step; separating the leached slurry into a first liquid stream and a first solid; leaching the first solid in a caustic pressure leach process; separating the second leached slurry into a second liquid stream and a second solid; collecting the first and second liquid streams; oxidizing the combined liquid stream; cooling the oxidized liquid stream; adjusting the pH of the oxidized liquid stream; contacting the cooled oxidized liquid stream with an organic solvent containing an extractant; stripping the soluble metal species from the organic phase; adjusting the pH of the aqueous phase to selectively precipitate at least one metal as a metal salt; and separating the metal salt from the aqueous phase.
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2.发明公开PROCESS TO RECOVER MOLYBDENUM AND VANADIUM METALS FROM SPENT CATALYST BY ALKALINE LEACHING 有权从废催化剂碱浸RÜCKGWINNUNG钼和钒的方法
公开(公告)号：EP1080239A1
公开(公告)日：2001-03-07
申请号：EP99918949.1
申请日：1999-05-06
申请人： SHELL OIL COMPANY
CPC分类号： C22B7/008 , C22B7/009 , C22B34/325 , C22B34/345 , Y02P10/214 , Y02P10/23 , Y02P10/234
摘要： There is provided a process to reclaim molybdenum, vanadium and other hydrodesulfurisation metals from catalysts, said process comprising collecting one or more catalysts containing at least one metal sulfide; leaching the catalyst in an atmospheric alkaline leach step; separating the leached slurry into a first liquid stream and a first solid; leaching the first solid in a caustic pressure leach process; separating the second leached slurry into a second liquid stream and a second solid; collecting the first and second liquid streams; oxidizing the combined liquid stream; cooling the oxidized liquid stream; adjusting the pH of the oxidized liquid stream; contacting the cooled oxidized liquid stream with an organic solvent containing an extractant; stripping the soluble metal species from the organic phase; adjusting the pH of the aqueous phase to selectively precipitate at least one metal as a metal salt; and separating the metal salt from the aqueous phase.
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