US4127470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroconversion with group IA, IIA metal compounds
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1977-08-01
•
Granted: 1978-11-28
•
Expires: 1997-08-01
Abstract
Abstract Processes for the treating of sulfur-containing petroleum oil feedstocks employing alkali metal compounds, alkaline earth metal compounds, and mixtures thereof are disclosed. Specifically, processes for hydrotreating feedstocks which have been previously partially desulfurized using conventional hydrodesulfurization catalysts by contacting such feedstocks with alkali metal compounds, alkaline earth metal compounds, and mixtures thereof, are disclosed. Preferably, the products of such a treatment are employed as feeds for catalytic cracking processes. In addition, processes for the combined hydrotreating and hydroconversion of various sulfur-containing petroleum oil feeds are disclosed, employing at least two hydroconversion agents selected from the group consisting of the alkali metal compounds and alkaline earth metal compounds, in the presence of added hydrogen, and at elevated temperatures. The reaction products formed thereby include a substantially desulfurized and demetallized, as well as a significantly upgraded petroleum product. The latter is demonstrated by a reduced Conradson carbon content and an increased API gravity.
Inventors
- 👤 William C. Baird, Jr.
- 👤 Roby Bearden, Jr.
- 👤 Thomas H. Ledford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:29
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G65/00; C10G65/02; C10G65/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
231 words
A process for hydrotreating a partially desulfurized petroleum oil feedstock in a reaction zone at a temperature ranging from about 500° to about 1500° F. in the presence of sufficient added hydrogen to produce a hydrogen partial pressure of from about 500 to 5000 psi, which comprises: contacting said feedstock in said reaction zone with a reagent consisting essentially of a compound selected from the group consisting of (a) at least one alkali metal compound selected from the group consisting of alkali metal oxides, alkali metal sulfides, alkali metal hydrosulfides, alkali metal amides, alkali metal carbonates, alkali metal carboxylates, and alkali metal alkoxides; (b) at least one compound selected from the group consisting of alkaline earth metal hydroxides, alkaline earth metal sulfides, alkaline earth metal hydrosulfides, alkaline earth metal amides, alkaline earth metal carbonates, alkaline earth metal alkoxides, and (c) a mixture of at least one alkali metal compound and at least one alkaline earth metal compound, said alkali metal compound being selected from the group consisting of alkali metal oxides, alkali metal hydroxides, alkali metal sulfides, alkali metal hydrosulfides, alkali metal amides, alkali metal carbonates, alkali metal carboxylates, alkali metal alkoxides and, wherein said alkaline earth metal compound is selected from the group consisting of alkaline earth metal oxides, alkaline earth metal hydroxides, alkaline earth metal sulfides, alkaline earth metal hydrosulfides, alkaline earth metal carboxylates and alkaline earth metal alkoxides.
Claim 2
Dependent Claim
231 words
A process for hydrotreating a partially desulfurized petroleum oil feedstock in a reaction zone at a temperature ranging from about 500° to about 1500° F. in the presence of sufficient added hydrogen to produce a hydrogen partial pressure of from about 500 to 5000 psi, which comprises: contacting said feedstock in said reaction zone with a reagent consisting essentially of a compound selected from the group consisting of (a) at least one alkali metal compound selected from the group consisting of alkali metal oxides, alkali metal sulfides, alkali metal hydrosulfides, alkali metal amides, alkali metal carbonates, alkali metal carboxylates, and alkali metal alkoxides; (b) at least one compound selected from the group consisting of alkaline earth metal hydroxides, alkaline earth metal sulfides, alkaline earth metal hydrosulfides, alkaline earth metal amides, alkaline earth metal carbonates, alkaline earth metal alkoxides, and (c) a mixture of at least one alkali metal compound and at least one alkaline earth metal compound, said alkali metal compound being selected from the group consisting of alkali metal oxides, alkali metal hydroxides, alkali metal sulfides, alkali metal hydrosulfides, alkali metal amides, alkali metal carbonates, alkali metal carboxylates, alkali metal alkoxides and, wherein said alkaline earth metal compound is selected from the group consisting of alkaline earth metal oxides, alkaline earth metal hydroxides, alkaline earth metal sulfides, alkaline earth metal hydrosulfides, alkaline earth metal carboxylates and alkaline earth metal alkoxides.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the alkali metal constituent of said alkali metal compound is selected from the group consisting of sodium, potassium and cesium.
Claim 4
Dependent Claim
28 words
The process of claim 1 wherein the alkaline earth metal constituent of said alkaline earth metal compound is selected from the group consisting of calcium, barium and magnesium.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein said alkaline earth metal compound is an alkaline earth oxide.
Claim 6
Dependent Claim
29 words
The process of claim 1 wherein said reagent is a mixture of at least one alkali metal compound and at least one alkaline earth metal compound of group (c).
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein said reagent is present in said reaction zone in an amount ranging from about 1 to about 15 weight percent.
Claim 8
Dependent Claim
70 words
The process of claim 1 wherein prior to said hydrotreating stage, a sulfur-containing pertroleum oil is subjected to catalytic desulfurization in a reaction zone maintained at a temperature ranging from about 500° to about 2000° F. in the presence of a sufficient amount of added hydrogen to provide a hydrogen pressure ranging from about 500 to about 2500 psi and thereby produce said partially desulfurized feedstock which is subsequently hydrotreated.
References Cited (Backward Citations)
US1729943A
Cited
US1845439A
Cited
US1968208A
Cited
US3788978A
Cited
US3976559A
Cited
US4003823A
Cited
US4003824A
Cited
US4007111A
Cited
US4017381A
Cited
US4076613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |