公开(公告)号：US20120039777A1

公开(公告)日：2012-02-16

申请号：US13156589

申请日：2011-06-09

申请人： Rahul Shankar Bhaduri ,  Louis Joseph Nordrum ,  Alexander E. Kuperman

发明人： Rahul Shankar Bhaduri ,  Louis Joseph Nordrum ,  Alexander E. Kuperman

IPC分类号： C22B34/30

CPC分类号： C22B34/345 ,  C22B7/009 ,  C22B23/026 ,  C22B23/0446 ,  C22B34/225 ,  Y02P10/214 ,  Y02P10/224 ,  Y02P10/23 ,  Y02P10/234

摘要： A process for treating spent catalyst containing heavy metals, e.g., Group VIB metals and Group VIII metals is provided. In one embodiment after deoiling, the spent catalyst is treated with an ammonia leach solution under conditions sufficient to dissolve the group VIB metal and the Group VIII metal into the leaching solution, forming a leach slurry. After solid-liquid separation to recover a leach solution, chemical precipitation and solids repulping is carried out to obtain an effluent stream containing ammonium sulfate (Amsul), ammonium sulfamate, Group VB, Group VIB and Group VIII metals. Following sulfidation, the Group VIII metal is fully removed and Group VB and Group VI metals are partially removed from the Amsul stream. In the additional steps of oxydrolysis and iron precipitation, an effective amount of ferric ion at a pre-select pH is added to form insoluble complexes with the Group VB and Group VIB metals, which upon liquid-solid separation produces an effluent ammonium sulfate stream containing less than 10 ppm each of the Group VB and Group VIB metals.

摘要翻译： 提供了一种处理含有重金属的废催化剂的方法，例如VIB族金属和VIII族金属。 在脱油后的一个实施方案中，在足以将VIB族金属和VIII族金属溶解到浸出溶液中的条件下，用氨浸出溶液处理废催化剂，形成浸出浆料。 在固液分离回收浸出溶液后，进行化学沉淀和固体再浆化，得到含有硫酸铵（Amsul），氨基磺酸铵，VB族，VIB族和VIII族金属的流出物流。 硫化后，完全除去第Ⅷ族金属，并从Amsul流部分除去VB族和VI族金属。 在氧解溶解和铁沉淀的附加步骤中，加入预选择pH下的有效量的铁离子以与VB族和VIB族金属组合形成不溶性络合物，其在液固分离时产生流出的硫酸铵流，其含有 VB族和VIB族金属中的每一种都少于10ppm。

公开(公告)号：US08815184B2

公开(公告)日：2014-08-26

申请号：US13156589

申请日：2011-06-09

申请人： Rahul Shankar Bhaduri ,  Louis Joseph Nordrum ,  Alexander E Kuperman

发明人： Rahul Shankar Bhaduri ,  Louis Joseph Nordrum ,  Alexander E Kuperman

IPC分类号： C01G37/14

CPC分类号： C22B34/345 ,  C22B7/009 ,  C22B23/026 ,  C22B23/0446 ,  C22B34/225 ,  Y02P10/214 ,  Y02P10/224 ,  Y02P10/23 ,  Y02P10/234

摘要： A process for treating spent catalyst containing heavy metals, e.g., Group VIB metals and Group VIII metals is provided. In one embodiment after deoiling, the spent catalyst is treated with an ammonia leach solution under conditions sufficient to dissolve the group VIB metal and the Group VIII metal into the leaching solution, forming a leach slurry. After solid-liquid separation to recover a leach solution, chemical precipitation and solids repulping is carried out to obtain an effluent stream containing ammonium sulfate (Amsul), ammonium sulfamate, Group VB, Group VIB and Group VIII metals. Following sulfidation, the Group VIII metal is fully removed and Group VB and Group VI metals are partially removed from the Amsul stream. In the additional steps of oxydrolysis and iron precipitation, an effective amount of ferric ion at a pre-select pH is added to form insoluble complexes with the Group VB and Group VIB metals, which upon liquid-solid separation produces an effluent ammonium sulfate stream containing less than 10 ppm each of the Group VB and Group VIB metals.

摘要翻译： 提供了一种处理含有重金属的废催化剂的方法，例如VIB族金属和VIII族金属。 在脱油后的一个实施方案中，在足以将VIB族金属和VIII族金属溶解到浸出溶液中的条件下，用氨浸出溶液处理废催化剂，形成浸出浆料。 在固液分离回收浸出溶液后，进行化学沉淀和固体再浆化，得到含有硫酸铵（Amsul），氨基磺酸铵，VB族，VIB族和VIII族金属的流出物流。 硫化后，完全除去第Ⅷ族金属，并从Amsul流部分除去VB族和VI族金属。 在氧解溶解和铁沉淀的附加步骤中，加入预选择pH下的有效量的铁离子以与VB族和VIB族金属组合形成不溶性络合物，其在液固分离时产生流出的硫酸铵流，其含有 VB族和VIB族金属中的每一种都少于10ppm。