发明名称 |
Regeneration of spent hydrodesulfurization catalysts employing presulfiding treatment and heteropoly acids |
摘要 |
The removal of metals, especially vanadium, from spent hydrofining catalyst is accomplished by a two-step process. Treatment with a gaseous sulfur-containing reagent brings the metals to the surface of the catalyst and converts them to sulfides, which are then efficiently removed by contact with a heteropoly acid such as molybdophosphoric acid. Treatment of deactivated hydrodesulfurization catalysts such as Co-Mo supported on alumina by this process results in substantially complete regeneration of catalytic activity.
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申请公布号 |
US4272400(A) |
申请公布日期 |
1981.06.09 |
申请号 |
US19790059070 |
申请日期 |
1979.07.19 |
申请人 |
EXXON RESEARCH & ENGINEERING CO. |
发明人 |
SILBERNAGEL, BERNARD G.;MOHAN, RAAM R.;SINGHAL, GOPAL H. |
分类号 |
B01J23/90;B01J23/94;B01J37/20;C10G45/08;(IPC1-7):B01J23/94;B01J23/92;B01J21/20;C10G23/02 |
主分类号 |
B01J23/90 |
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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