发明名称 |
Hydroconversion multi-metallic catalyst and method for making thereof |
摘要 |
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. |
申请公布号 |
US9168519(B2) |
申请公布日期 |
2015.10.27 |
申请号 |
US201113275518 |
申请日期 |
2011.10.18 |
申请人 |
CHEVRON U.S.A. INC. |
发明人 |
Kuperman Alexander E.;Maesen Theodorus;Dykstra Dennis |
分类号 |
B01J37/20;B01J37/34;B01J23/85;B01J23/888;B01J37/03;B01J27/051;B01J37/04;B01J37/08 |
主分类号 |
B01J37/20 |
代理机构 |
|
代理人 |
Ross Michael D. |
主权项 |
1. A process for forming a bulk hydroprocessing catalyst, comprising:
co-precipitating at reaction conditions at least one of a Group VIB metal precursor feed and at least a Promoter metal precursor feed selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, to form a mixture comprising a catalyst precursor; isolating the catalyst precursor from the mixture, forming a supernatant containing at least a Promoter metal residual and at least a Group VIB metal residual in a total amount of at least 10 mole % of the metal precursor feeds; mixing the supernatant with at least one of an acid, a sulfide-containing compound, a base, and combinations thereof under mixing conditions at a temperature from ambient to 90° C. for a sufficient amount of time to precipitate at least 50 mole % of metal ions in at least one of the metal residuals, wherein the precipitation is carried out at a pre-select pH; isolating the precipitate to recover a first effluent containing less than 50 mole % of metal ions in at least one of the metal residuals in the supernatant; converting the metal ions in the precipitate or the first effluent into at least a metal precursor feed; recycling the at least a metal precursor feed from the converting step to the co-precipitating step; and sulfiding the catalyst precursor forming the bulk catalyst. |
地址 |
San Ramon CA US |