发明名称 |
Process for the recovery of pentavalent vanadium compounds from acid catalyst extracts |
摘要 |
A process for the preparation of pentavalent vanadium compounds by reprocessing acid extracts of vanadium-containing catalysts spent in the hydrotreatment of crude or residual oils, characterized in that extracts containing trivalent and tetravalent vanadium are oxidized at a pH between 0.5 and 2.6 with an oxygen-containing gas to form concentrates of tetravalent vanadium, after which oxidation is carried out at a pH between 2.6 and 4.0 with an oxygen-containing gas to form concentrates of pentavalent vanadium and in that solid vanadium compounds are subsequently recovered by separating them from the liquid phase.
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申请公布号 |
US4436706(A) |
申请公布日期 |
1984.03.13 |
申请号 |
US19820406116 |
申请日期 |
1982.08.06 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B. V. |
发明人 |
NACKEN, LAMBERTUS J. G.;BAAS, ALBERTUS H. |
分类号 |
C01G31/00;(IPC1-7):C01G31/02 |
主分类号 |
C01G31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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