Hydroprocessing catalysts and methods for making thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-027/02
B01J-027/043
B01J-027/045
B01J-023/00
B01J-023/40
B01J-023/42
B01J-023/44
B01J-023/58
B01J-023/74
B01J-023/85
B01J-037/20
B01J-035/00
B01J-023/887
B01J-027/051
B01J-023/24
C10G-049/04
B01J-023/883
B01J-035/10
출원번호
US-0331704
(2011-12-20)
등록번호
US-8802587
(2014-08-12)
발명자
/ 주소
Nguyen, Joseph V.
Chabot, Julie
Jiao, Ling
Dunckley, Christopher Paul
Yang, Shuwu
출원인 / 주소
Chevron U.S.A. Inc.
인용정보
피인용 횟수 :
1인용 특허 :
77
초록▼
An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. The sulfiding of the metal precursor/catalyst precursor is carried out at least twice (“enhanced sulfiding”) in the improved process to form a slurry catalyst with improved surface area and porosity val
An improved process to make a slurry catalyst for the upgrade of heavy oil feedstock is provided. The sulfiding of the metal precursor/catalyst precursor is carried out at least twice (“enhanced sulfiding”) in the improved process to form a slurry catalyst with improved surface area and porosity value. The slurry catalyst under an enhanced sulfiding scheme is characterized as having increased catalytic activities over a slurry catalyst without an enhanced sulfidation step.
대표청구항▼
1. A process for preparing a slurry catalyst for use in upgrading heavy oil feedstock, comprising: providing at least a first metal precursor comprising a metal salt of a Primary metal selected from Group VIB metals, Group VIII metals, and Group IIB metals;sulfiding the first metal precursor with a
1. A process for preparing a slurry catalyst for use in upgrading heavy oil feedstock, comprising: providing at least a first metal precursor comprising a metal salt of a Primary metal selected from Group VIB metals, Group VIII metals, and Group IIB metals;sulfiding the first metal precursor with a first sulfiding agent at a sulfur to Primary metal molar ratio of at least 1.5 to 1 to form a sulfided catalyst precursor;sulfiding the sulfided catalyst precursor with a second sulfiding agent at a molar ratio of sulfur to metal in the sulfided catalyst precursor of at least 1.5 to 1 for an enhanced sulfided catalyst precursor;mixing the enhanced sulfided catalyst precursor with a hydrocarbon diluent forming a slurry catalyst having an average particle size of 1 to 300 μm. 2. The process of claim 1, wherein first metal precursor comprising at least a water-soluble metal salt of a Group VIB metal. 3. The process of claim 1, wherein Primary metal is molybdenum the metal salt is selected from the group of molybdates, alkali metal heptamolybdates, alkali metal orthomolybdates, alkali metal isomolybdates, phosphomolybdic acid, molybdenum oxide, molybdenum carbide, molybdenum nitride, aluminum molybdate, molybdic acid, and mixtures thereof. 4. The process of claim 1, further comprising: providing a second metal precursor comprising at least a metal salt of a Promoter metal selected from the group of Group IVB, Group VIB, Group VIII, Group IIB metals and combinations thereof, wherein the Promoter metal is different from the Primary metal;combining the sulfided catalyst precursor with the second metal precursor for the sulfided catalyst precursor to be promoted with the Promoter metal prior to sulfiding the sulfided catalyst precursor with a second sulfiding agent. 5. The process of claim 4, wherein the Promoter metal is nickel, cobalt, and mixtures thereof. 6. The process of claim 4, wherein the second metal precursor is selected from acetates, carbonates, chlorides, nitrates, actylacetonates, citrates, and oxalates of Group VIII metals. 7. The process of claim 1, further comprising: providing a second metal precursor comprising at least a metal salt of a Promoter metal selected from Group IVB, Group VIII, Group IIB metals and combinations thereof;combining the second metal precursor into the first metal precursor prior to sulfiding the metal precursor with a first sulfiding agent to form a sulfided catalyst precursor. 8. The process of claim 7, wherein the Promoter metal is selected from nickel, cobalt, and mixtures thereof. 9. The process of claim 7, wherein the Promoter metal is nickel and the Promoter metal salt is selected from the group of nickel acetate, nickel carbonate, nickel chloride, nickel sulfate, nickel nitrate, nickel acetylacetone, nickel citrate, nickel oxalate, and mixtures thereof. 10. The process of claim 1, wherein the first sulfiding agent and the second sulfiding agent are selected from the group of elemental sulfur, H2S, ammonium sulfide, ammonium polysulfide ((NH4)2Sx), ammonium thiosulfate ((NH4)2S2O3), sodium thiosulfate (Na2S2O3), thiourea (CSN2H4), carbon disulfide, dimethyl disulfide (DMDS), dimethyl sulfide (DMS), tertiarybutyl polysulfide (PSTB) and tertiarynonyl polysulfide (PSTN), and mixtures thereof. 11. The process of claim 1, wherein the first sulfiding agent is the same as the second sulfiding agent. 12. The process of claim 1, wherein the first sulfiding agent is different from the second sulfiding agent. 13. The process of claim 1, wherein the hydrocarbon diluent is selected from gasoline, diesel, vacuum gas oil (VGO), cycle oil (MCO or HCO), jet oil, fuel oil, heavy oil feedstock, and mixtures thereof. 14. The process of claim 1, wherein the slurry catalyst formed has a general formula of (Mt)a(Lu)b(Sv)d(Cw)e(Hx)f(Oy)g(Nz)h, wherein M is a Primary metal selected from group VIB metals, Group VIII metals, Group IIB metals; L is optional as a Promoter metal and L is different from M, L is at least one of a Group VIII metal, a Group VIB metal, a Group IVB metal, and a Group IIB metal; b>=0; 0=
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