Hydroconversion multi-metallic catalyst and method for making thereof
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/00
출원번호
US-0275557
(2011-10-18)
등록번호
US-8586500
(2013-11-19)
발명자
/ 주소
Kuperman, Alexander E.
Maesen, Theodorus
Dykstra, Dennis
출원인 / 주소
Chevron U.S.A. Inc.
인용정보
피인용 횟수 :
8인용 특허 :
69
초록▼
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. In the present disclosure, the metals can be recovered via any
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. In the present disclosure, the metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals is recovered as a metal precursor feed, which can be recycled for use in the co-precipitation reaction. An effluent stream from the process to waste treatment contains less than 50 ppm metal ions.
대표청구항▼
1. A process for forming a bulk hydroprocessing catalyst with minimal amount of metals to waste treatment, the method 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,
1. A process for forming a bulk hydroprocessing catalyst with minimal amount of metals to waste treatment, the method 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, wherein the reaction conditions comprise a temperature between 25-350° C. and a pressure between 0 to 3000 psig and a pH of 0-12;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 an amount of at least 10 mole % of the metal precursor feeds;treating the supernatant by any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate at least a metal precursor feed and a first effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals;treating the first effluent stream to recover at least 80 mol % of the metal ions in the first effluent stream to form at least a metal precursor feed;recycling the at least a metal precursor feed formed by treating the first effluent stream to the co-precipitating step; andsulfiding the catalyst precursor forming the bulk catalyst,wherein an effluent stream from the process to waste treatment contains less than 50 ppm metal ions. 2. The process of claim 1, further comprising drying the catalyst precursors at a temperature of at least 150° C. before the sulfidation step. 3. The process of claim 2, wherein the catalyst precursor is dried at a temperature of at least 300° C. before the sulfidation step. 4. The process of claim 2, wherein the catalyst precursor is dried at a temperature of at least 325° C. for the catalyst precursor to have the formula (X)b(Mo)c(W)dOz; wherein X is Ni or Co, the molar ratio of b: (c+d) is 0.5/1 to 3/1, the molar ratio of c:d is >0.01/1, and z=[2b+6 (c+d)]/2. 5. The process of claim 2, wherein the catalyst precursor is dried at a temperature of at most 200° C. for the catalyst precursor to have the formula Av[(MP)(OH)x(L)ny]z(MVIBO4), wherein A is at least one of an alkali metal cation, an ammonium, an organic ammonium and a phosphonium cation, MP is selected from the group of Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, P is oxidation state with MP having an oxidation state of either +2 or +4 depending on the selection of MP,L is at least a ligating agent L having an charge n<=0;MVIB is at least a Group VIB metal having an oxidation state of +6,MP:MVIB has an atomic ratio of 100:1 to 1:100;v−2+(P*z)−(x*z)+(n*y*z)=0; and0
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