Continuous in-situ process for upgrading heavy oil using aqueous base
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-029/20
출원번호
US-0433907
(1995-05-02)
발명자
/ 주소
Brons Glen (Phillipsburg NJ) Myers Ronald D. (Calgary CAX)
출원인 / 주소
Exxon Research and Engineering Company (Florham Park NJ 02)
인용정보
피인용 횟수 :
32인용 특허 :
0
초록▼
The present invention relates to a continuous in-situ process for the removal from heavy oils, of organically bound sulfur in the form of mercaptans, sulfides and thiophenes, heteroatoms selected from the group consisting of nitrogen and oxygen and metals selected from the group consisting of nickel
The present invention relates to a continuous in-situ process for the removal from heavy oils, of organically bound sulfur in the form of mercaptans, sulfides and thiophenes, heteroatoms selected from the group consisting of nitrogen and oxygen and metals selected from the group consisting of nickel, vanadium and iron, comprising the steps of (a) contacting a heavy oil with aqueous sodium hydroxide at a temperature of about 380°to about 450°C. for a time sufficient to form sodium sulfide; (b) contacting said sodium sulfide of step (a) with water and a transition metal for a time and at a temperature sufficient to form transition metal sulfide, sodium hydroxide, hydrogen and impurities; and (c) recirculating said sodium hydroxide from step (b) to step (a) and removing said transition metal sulfide and said impurities, wherein said impurities are iron, vanadium and nickel. Optionally, molecular hydrogen may be added in the first step. The present invention is useful in removing organically bound sulfur that has been recognized to be difficult to remove, such as thiophenes. Beneficially, the process also removes other heteroatoms (nitrogen and oxygen) and metals (vanadium, iron, nickel) and reduces asphaltene content (n-heptane insolubles), micro concarbon residue, coke, 975°F. fractions, TGA fixed carbon, average molecular weight, density and viscosity.
대표청구항▼
A continuous in-situ process for the removal from heavy oils, of organically bound sulfur in the form of mercaptans, sulfides and thiophenes, heteroatoms selected from the group consisting of nitrogen and oxygen and metals selected from the group consisting of nickel, vanadium and iron, comprising t
A continuous in-situ process for the removal from heavy oils, of organically bound sulfur in the form of mercaptans, sulfides and thiophenes, heteroatoms selected from the group consisting of nitrogen and oxygen and metals selected from the group consisting of nickel, vanadium and iron, comprising the steps of: (a) contacting a heavy oil with aqueous sodium hydroxide at a temperature of about 380°to about 450°C. for a time sufficient to form sodium sulfide; (b) contacting said sodium sulfide of step (a) with water and a transition metal for a time and at a temperature sufficient to form transition metal sulfide, sodium hydroxide, hydrogen and impurities; and (c) recirculating said sodium hydroxide from step (b) to step (a) and removing said transition metal sulfide and said impurities, wherein said impurities are iron, vanadium and nickel.
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이 특허를 인용한 특허 (32)
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Soto, Jorge L.; Raterman, Michael; Leta, Daniel P.; Vann, Walter D.; Han, Lu; McConnachie, Jonathan M.; Bielenberg, James R.; Baird, Jr., William C.; Bearden, Jr., Roby, Desulfurization process using alkali metal reagent.
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Soto, Jorge L.; Leta, Daniel P.; Han, Lu; Vann, Walter D.; Greaney, Mark A.; Bielenberg, James R.; Oldenburg, Paul D.; McConnachie, Jonathan M.; Brown, Leo D.; Baird, Jr., William C.; Bearden, Jr., Roby, Regeneration of alkali metal reagent.
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