公开(公告)号：US20150196903A1

公开(公告)日：2015-07-16

申请号：US14664123

申请日：2015-03-20

Applicant: Chevron U.S.A. Inc.

Inventor： Alexander Kuperman ,  Theodorus Ludovicus Michael Maesen ,  Dennis Dykstra

IPC: B01J37/34 ,  B01J27/051 ,  B01J37/20 ,  B01J37/04 ,  B01J37/03 ,  B01J37/08

CPC classification number: B01J37/342 ,  B01J23/85 ,  B01J23/8885 ,  B01J27/0515 ,  B01J37/03 ,  B01J37/036 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  B01J37/34

Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant as metal residuals. In the present disclosure, the metals can be recovered in a chemical precipitation step, wherein the supernatant is mixed with at least one of an acid, a sulfide-containing compound, a base, and combinations thereof to precipitate at least 50% of metal ions in at least one of the metal residuals, wherein the precipitation is carried out at a pre-select pH. The precipitate is isolated and recovered, yielding an effluent stream. The precipitate and/or the effluent stream can be further treated to form at least a metal precursor feed which can be used in the co-precipitation reaction. The process generates an effluent to waste treatment containing less than 50 ppm metals.

Abstract translation: 在通过硫化在共沉淀反应中制备的催化剂前体形成本体加氢处理催化剂的方法中，多达60％的金属前体进料不反应形成催化剂前体，最后作为金属残余物结合在上清液中。 在本公开中，可以在化学沉淀步骤中回收金属，其中将上清液与酸，含硫化物的化合物，碱及其组合中的至少一种混合以沉淀至少50％的金属离子 在至少一个金属残留物中，其中沉淀是在预先选择的pH下进行的。 分离并回收沉淀物，产生流出物流。 可以将沉淀物和/或流出物流进一步处理以形成可用于共沉淀反应的至少一种金属前体进料。 该过程产生含有少于50ppm金属的废水处理废水。

公开(公告)号：US09776181B2

公开(公告)日：2017-10-03

申请号：US14664123

申请日：2015-03-20

Applicant: Chevron U.S.A. Inc.

Inventor： Alexander Kuperman ,  Theodorus Ludovicus Michael Maesen ,  Dennis Dykstra

IPC: B01J37/34 ,  B01J23/85 ,  B01J23/888 ,  B01J37/03 ,  B01J27/051 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20

CPC classification number: B01J37/342 ,  B01J23/85 ,  B01J23/8885 ,  B01J27/0515 ,  B01J37/03 ,  B01J37/036 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  B01J37/34

Abstract: In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds do not react to form catalyst precursor and end up in the supernatant as metal residuals. In the present disclosure, the metals can be recovered in a chemical precipitation step, wherein the supernatant is mixed with at least one of an acid, a sulfide-containing compound, a base, and combinations thereof to precipitate at least 50% of metal ions in at least one of the metal residuals, wherein the precipitation is carried out at a pre-select pH. The precipitate is isolated and recovered, yielding an effluent stream. The precipitate and/or the effluent stream can be further treated to form at least a metal precursor feed which can be used in the co-precipitation reaction. The process generates an effluent to waste treatment containing less than 50 ppm metals.