[특허]Process for the sequential hydroconversion and hydrodesulfurization of whole crude oil

Process for the sequential hydroconversion and hydrodesulfurization of whole crude oil 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10G-065/00
출원번호	US-0501300 (2009-07-10)
등록번호	US-8372267 (2013-02-12)
발명자 / 주소	Kressmann, Stephane Cyrille Shafi, Raheel Alzaid, Ali Hussain Hamad, Esam Z.
출원인 / 주소	Saudi Arabian Oil Company
인용정보	피인용 횟수 : 0 인용 특허 : 63

초록 ▼

The invention relates to a method for removing sulfur from crude oils using a catalytic hydrotreating process operating at moderate temperature and pressure and reduced hydrogen consumption. The process produces sweet crude oil having a sulfur content of between about 0.1 and 1.0 wt % in addition to reduced crude density. The method employs least two reactors in series, wherein the first reactor includes a hydroconversion catalyst and the second reactor includes a desulfurization catalyst.

대표청구항 ▼

1. A method for upgrading crude oil, the method comprising: (a) contacting a crude oil feedstock with hydrogen gas to produce a hydrogen gas crude oil mixture;(b) contacting the hydrogen gas crude oil mixture with a hydroconversion catalyst in a first reactor maintained at a temperature of between about 400° C. and 450° C. to produce an effluent having an asphaltene content of less than 5% by weight, wherein said hydroconversion catalyst comprises a bimodal support material;(c) supplying the effluent from the first reactor to an interstage separator to remove a light fraction comprising hydrocarbons having fewer than 5 carbons, hydrogen sulfide and ammonia;(d) contacting the effluent from the first reactor with hydrogen gas to produce a effluent hydrogen gas mixture; and(e) contacting the effluent hydrogen gas mixture with a desulfurization catalyst in a second reactor to produce an upgraded crude oil product having a reduced sulfur content and an increased API gravity, wherein said second reactor is maintained at a temperature that is less than the temperature that is maintained in the first reactor. 2. The method of claim 1 wherein the hydroconversion catalyst further comprises a base metal selected from the group consisting of a group VB metal, a group VIB metal and a group VIIIB metal and wherein said bimodal support material comprises a first pore size having an average diameter of between about 6000 and 10000 Angstroms and a second pore size having an average diameter of between about 80 and 150 Angstroms. 3. The method of claim 2 wherein the hydroconversion catalyst further comprises a promoter metal, wherein said promoter metal is selected from the group consisting of a group IIB metal, a group IVB metal and a group VIIIB metal, and wherein said promoter metal is present in an amount between about 1 and 3% by weight. 4. The method of claim 2 wherein the base metal of the hydroconversion catalyst comprises molybdenum in an amount of between about 7.5 and 9% by weight, and wherein the hydroconversion catalyst further comprising a nickel promoter metal in an amount of between about 1 and 3% by weight. 5. The method of claim 1 wherein the hydrodesulfurization catalyst comprises a base metal selected from a group VB, VIB or VIIIB metal. 6. The method of claim 5 wherein the hydrodesulfurization catalyst further comprises a promoter metal, wherein said promoter metal is selected from the group consisting of a group IIB metal, a group IVB metal and a group VIIIB metal, and wherein said promoter metal is present in an amount between about 1 and 3% by weight. 7. The method of claim 1 wherein the hydrodesulfurization catalyst comprises a support material having an average pore size of between about 100 and 300 Angstroms. 8. The method of claim 1 wherein the support material for the hydroconversion catalyst is more acidic than the support material for the hydrodesulfurization catalyst. 9. The method of claim 1 wherein the API of the upgraded crude oil product has been increased by about 2 degrees relative to the API of the crude oil feedstock. 10. The method of claim 1 wherein the sulfur content of the upgraded crude oil product is reduced to between about 0.1 and 1.0 wt %. 11. The method of claim 1 wherein at least one of the first and second reactors is an ebullating bed reactor. 12. The method of claim 1 further comprising: separating the crude oil feedstock into a first fraction and a second fraction before the crude oil feedstock being supplied to the first reactor, wherein the first fraction has a maximum boiling point less than 250° C. and the second fraction has a boiling point greater than 250° C.;removing the first fraction and processing the first fraction in a separate reaction zone to remove sulfur; andrecombining the desulfurized first fraction with the effluent from the second reactor. 13. The method of claim 1 wherein the desulfurization catalyst comprises a sulfide of a metal selected from groups VB, VIB and VIIIB of the periodic table. 14. The method of claim 1 wherein at least one of the hydroconversion and desulfurization catalyst is regenerated offline. 15. A method for upgrading crude oil, the method comprising: (a) separating the crude oil feedstock into a first fraction and a second fraction before the crude oil feedstock being supplied to the first reactor, wherein the first fraction has a maximum boiling point less than 250° C. and the second fraction has a boiling point greater than 250° C.;(b) removing the first fraction and processing the first fraction in a separate reaction zone to remove sulfur;(c) contacting the second fraction with hydrogen gas to produce a hydrogen gas second fraction mixture;(d) contacting the hydrogen gas second fraction mixture with a hydroconversion catalyst in a first reactor maintained at a temperature of between about 400° C. and 450° C. to produce an effluent having an asphaltene content of less than 5% by weight, wherein said hydroconversion catalyst comprises a bimodal support material;(e) contacting the effluent from the first reactor with hydrogen gas to produce a effluent hydrogen gas mixture;(f) contacting the effluent hydrogen gas mixture with a desulfurization catalyst in a second reactor to produce an upgraded crude oil product having a reduced sulfur content and an increased API gravity, wherein said second reactor is maintained at a temperature that is less than the temperature that is maintained in the first reactor; and(g) recombining the desulfurized first fraction with the effluent from the second reactor. 16. The method of claim 15 wherein the hydroconversion catalyst further comprises a base metal selected from the group consisting of a group VB metal, a group VIB metal and a group VIIIB metal and wherein said bimodal support material comprises a first pore size having an average diameter of between about 6000 and 10000 Angstroms and a second pore size having an average diameter of between about 80 and 150 Angstroms. 17. The method of claim 16 wherein the hydroconversion catalyst further comprises a promoter metal, wherein said promoter metal is selected from the group consisting of a group IIB metal, a group IVB metal and a group VIIIB metal, and wherein said promoter metal is present in an amount between about 1 and 3% by weight. 18. The method of claim 16 wherein the base metal of the hydroconversion catalyst comprises molybdenum in an amount of between about 7.5 and 9% by weight, and wherein the hydroconversion catalyst further comprising a nickel promoter metal in an amount of between about 1 and 3% by weight. 19. The method of claim 15 wherein the hydrodesulfurization catalyst comprises a base metal selected from a group VB, VIB or VIIIB metal. 20. The method of claim 19 wherein the hydrodesulfurization catalyst further comprises a promoter metal, wherein said promoter metal is selected from the group consisting of a group IIB metal, a group IVB metal and a group VIIIB metal, and wherein said promoter metal is present in an amount between about 1 and 3% by weight. 21. The method of claim 15 wherein the hydrodesulfurization catalyst comprises a support material having an average pore size of between about 100 and 300 Angstroms. 22. The method of claim 15 wherein the support material for the hydroconversion catalyst is more acidic than the support material for the hydrodesulfurization catalyst. 23. The method of claim 15 wherein the API of the upgraded crude oil product has been increased by about 2 degrees relative to the API of the crude oil feedstock. 24. The method of claim 15 wherein the sulfur content of the upgraded crude oil product is reduced to between about 0.1 and 1.0 wt %. 25. The method of claim 15 wherein at least one of the first and second reactors is an ebullating bed reactor. 26. The method of claim 15 wherein the desulfurization catalyst comprises a sulfide of a metal selected from groups VB, VIB and VIIIB of the periodic table. 27. The method of claim 15 wherein at least one of the hydroconversion and desulfurization catalyst is regenerated offline.

이 특허에 인용된 특허 (63)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Process for the sequential hydroconversion and hydrodesulfurization of whole crude oil 원문보기

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Process for the sequential hydroconversion and hydrodesulfurization of whole crude oil 원문보기

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