Preparation of components for transportation fuels
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-067/12
C10G-027/04
출원번호
US-0779287
(2001-02-08)
발명자
/ 주소
Morris, George Ernest
Lucy, Andrew Richard
Gong, William H.
Regalbuto, Monica Cristina
Huff, Jr., George A.
출원인 / 주소
BP Corporation North America Inc.
인용정보
피인용 횟수 :
30인용 특허 :
13
초록▼
Economical processes are disclosed for the production of components for refinery blending of transportation fuels by selective oxidation of feedstocks comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds. Oxidation feedstock is contacted with a soluble qu
Economical processes are disclosed for the production of components for refinery blending of transportation fuels by selective oxidation of feedstocks comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds. Oxidation feedstock is contacted with a soluble quaternary ammonium salt containing halogen, sulfate, or bisulfate anion, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds. Blending components containing less sulfur and/or less nitrogen than the oxidation feedstock are recovered from the reaction mixture. Advantageously, at least a portion of the immiscible acid-containing phase is recycled to the oxidation.
대표청구항▼
1. A process for the production of refinery transportation fuel or blending components for refinery transportation fuel, which process comprises:providing a petroleum feedstock comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds, the mixture having a gra
1. A process for the production of refinery transportation fuel or blending components for refinery transportation fuel, which process comprises:providing a petroleum feedstock comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds, the mixture having a gravity ranging from about 10° API to about 75° API; fractionating the petroleum feedstock by distillation to provide at least one low-boiling blending component consisting of a sulfur-lean, mono-aromatic-rich fraction, and a high-boiling oxidation feedstock consisting of a sulfur-rich, mono-aromatic-lean fraction; contacting the high-boiling oxidation feedstock with a soluble quaternary ammonium salt containing, sulfate, or bisulfate anion, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds; separating from the reaction mixture both an essentially organic liquid and at least a portion of the immiscible aqueous phase with oxidation products of one or more of the sulfur-containing and/or nitrogen-containing organic compounds; treating at least a portion of the separated organic liquid by contact with at least one immiscible liquid comprising a solvent having a dielectric constant in a range from about 24 to about 80 suitable to selectively extract oxidized sulfur-containing and/or nitrogen-containing organic compounds; and recovering from the treated organic liquid a product comprising a mixture of organic compounds containing less sulfur and/or less nitrogen than the high-boiling oxidation feedstock. 2. The process according to claim 1 wherein the soluble quaternary ammonium salt is represented by formulaCH3N(R)3X where X is a sulfate, or bisulfate anion, and the R's are the same or different hydrocarbon moieties of at least 4 carbon atoms.3. The process according to claim 1 wherein the immiscible aqueous phase consists essentially of water, a source of hydrogen peroxide, and phosphotungstic acid.4. The process according to claim 3 wherein soluble quaternary ammonium salt is represented by formulaCH3N(R)3X where X is a sulfate anion, and the R is a hydrocarbon moiety of about 7 to about 10 carbon atoms.5. The process according to claim 1 wherein the recovering of product from the treated organic liquid includes use of at least one solid sorbent comprising silica, and at least a portion of the separated aqueous phase with oxidation products of one or more of the sulfur-containing and/or nitrogen-containing organic compounds is recycled to the reaction mixture.6. The process according to claim 5 wherein all or at least a portion of the petroleum feedstock is a product of a hydrotreating process for petroleum distillate consisting essentially of material boiling between about 50° C. and about 425° C. which hydrotreating process includes reacting the petroleum distillate with a source of hydrogen at hydrogenation conditions in the presence of a hydrogenation catalyst to assist by hydrogenation removal of sulfur and/or nitrogen from the hydrotreated petroleum feedstock.7. The process according to claim 6 further comprising treating the immiscible aqueous phase separated from the reaction mixture to remove at least a portion of the sulfur-containing and/or nitrogen-containing organic compounds, recycling the treated aqueous phase to the reaction mixture, and blending at least a portion of the low-boiling blending component with the product containing less sulfur and/or less nitrogen than the high-boiling oxidation feedstock to obtain a component for refinery blending of transportation fuel.8. The process according to claim 6 wherein the high-boiling oxidation feedstock consists essentially of material boiling between about 200° C. and about 425° C.9. The process according to claim 6 wherein the conditions of oxidation include temperatures in a range upward from about 25° C. to about 250° C. and sufficient pressure to maintain the reaction mixture substantially in a liquid phase.10. A process for the production of refinery transportation fuel or blending components for refinery transportation fuel, which process comprises:hydrotreating a petroleum distillate consisting essentially of material boiling between about 50° C. and about 425° C. by a process which includes reacting the petroleum distillate with a source of hydrogen at hydrogenation conditions in the presence of a hydrogenation catalyst to assist by hydrogenation removal of sulfur and/or nitrogen from the hydrotreated petroleum distillate; fractionating the hydrotreated petroleum distillate by distillation to provide at least one low-boiling blending component consisting of a sulfur-lean, mono-aromatic-rich fraction, and a high-boiling oxidation feedstock consisting essentially of a sulfur-rich, mono-aromatic-lean fraction boiling between about 200° C. and about 425° C.; contacting the high-boiling oxidation feedstock with a soluble quaternary ammonium salt containing, sulfate, or bisulfate anion, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds and extraction of oxidation products from treated feedstock; separating from the reaction mixture an essentially organic liquid and at least a portion of the immiscible aqueous phase comprising oxidation product of one or more of the sulfur-containing and/or nitrogen-containing organic compounds; and treating at least a portion of the recovered organic liquid with a solid sorbent, an ion exchange resin, and/or a suitable immiscible liquid containing a solvent or a soluble basic chemical compound, to obtain a product containing less sulfur and less nitrogen than the oxidation feedstock. 11. The process according to claim 10 wherein the soluble quaternary ammonium salt is represented by formulaCH3N(R)3X where X is a sulfate anion, and the R is a hydrocarbon moiety of about 7 to about 10 carbon atoms.12. The process according to claim 11 wherein the immiscible aqueous phase consists essentially of water, a source of hydrogen peroxide, and phosphotungstic acid.13. The process according to claim 12 wherein at least a portion of the separated aqueous phase with oxidation products of one or more of the sulfur-containing and/or nitrogen-containing organic compounds is treated to remove at least a portion of the oxidation products therefrom, and thereafter is recycled to the reaction mixture.14. The process according to claim 11 wherein the treating of recovered organic liquid includes use of at least one immiscible liquid comprising a solvent having a dielectric constant in a range from about 24 to about 80 suitable to selectively extract oxidized sulfur-containing and/or nitrogen-containing organic compounds.15. The process according to claim 14 wherein the solvent comprises a compound selected from the group consisting of water, methanol, ethanol and mixtures thereof.16. The process according to claim 10 wherein the soluble quaternary ammonium salt is represented by formulaCH3N[(CH2)7CH3]3X where X is a sulfate anion, and the immiscible aqueous phase consists essentially of water, a source of hydrogen peroxide, and phosphotungstic acid.17. The process according to claim 16 wherein the treating of recovered organic liquid includes use of at least one solid sorbent comprising silica.18. The process according to claim 17 further comprising treating the immiscible aqueous phase separated from the reaction mixture to remove at least a portion of the sulfur-containing and/or nitrogen-containing organic compounds, recycling the treated aqueous phase to the reaction mixture, and blending at least a portion of the low-boiling fraction with the product containing less sulfur and less nitrogen than the oxidation feedstock to obtain components containing less than about 50 parts per million of sulfur for refinery blending of a transportation fuel.19. A process for the production of refinery transportation fuel or blending components for refinery transportation fuel, which process comprises:hydrotreating a petroleum distillate consisting essentially of material boiling between about 50° C. and about 425° C. by a process which includes reacting the petroleum distillate with a source of hydrogen at hydrogenation conditions in the presence of a hydrogenation catalyst to assist by hydrogenation removal of sulfur and/or nitrogen from the hydrotreated petroleum distillate; fractionating the hydrotreated petroleum distillate by distillation to provide at least one low-boiling blending component consisting of a sulfur-lean, mono-aromatic-rich fraction, and a high-boiling oxidation feedstock consisting essentially of a sulfur-rich, mono-aromatic-lean fraction boiling between about 200° C. and about 425° C.; contacting the high-boiling oxidation feedstock with a soluble quaternary ammonium salt represented by formula CH3N(R)3X where X is a sulfate, or bisulfate anion, and the R's are the same or different hydrocarbon moieties of at least 4 to about 10 carbon atoms, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds and extraction of oxidation products from treated feedstock;separating from the reaction mixture an essentially organic liquid and at least a portion of the immiscible aqueous phase comprising oxidation products of one or more of the sulfur-containing and/or nitrogen-containing organic compounds; and treating at least a portion of the recovered organic liquid with a suitable immiscible aqueous liquid containing a solvent or a soluble basic chemical compounds to obtain a product containing less sulfur and less nitrogen than the oxidation feedstock.
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