This invention relates to low sulfur marine/bunker fuel compositions and methods of making same. Contrary to conventional marine/bunker fuel compositions/methods, the inventive lower sulfur compositions/methods focus on use of mostly uncracked components, such as (cat feed) hydrotreated gasoils, and
This invention relates to low sulfur marine/bunker fuel compositions and methods of making same. Contrary to conventional marine/bunker fuel compositions/methods, the inventive lower sulfur compositions/methods focus on use of mostly uncracked components, such as (cat feed) hydrotreated gasoils, and/or can also have reduced contents of residual components.
대표청구항▼
1. A method for making a low sulfur marine bunker fuel composition with a reduced concentration of components that have been cracked, the method comprising: producing an uncracked gasoil product by contacting a gasoil feed stream having at least 2000 wppm sulfur content with a hydrogen-containing ga
1. A method for making a low sulfur marine bunker fuel composition with a reduced concentration of components that have been cracked, the method comprising: producing an uncracked gasoil product by contacting a gasoil feed stream having at least 2000 wppm sulfur content with a hydrogen-containing gas in the presence of a hydrotreating catalyst under effective hydrotreating conditions in a catalytic feed hydrotreater, such that the product exhibits at most 5000 wppm sulfur content, a T5 boiling point of at least 280° C., a T50 boiling point of at least 400° C., a T95 boiling point of at least 510° C., a pour point of at least 7° C., and a kinematic viscosity of at least 12 cSt at about 50° C., without the product being subject to cracking;optionally blending at least a portion of the uncracked gasoil product with 0-70 vol % of other components, selected from viscosity modifiers, pour point depressants, lubricity modifiers, antioxidants, and combinations thereof, to form a marine bunker fuel composition containing the uncracked gasoil product and having: at most 5000 wppm sulfur content;at most 25 vol %, based on all components of the marine bunker fuel composition, of residual components selected from crude fractionation vacuum resid, deasphalted vacuum resid, slurry oil, and combinations thereof;less than 50 vol %, based on all components of the marine bunker fuel composition, of residual components, components subject to a refinery cracking step, or both; andat least one of a kinematic viscosity at about 50° C. from 12 cSt to 50 cSt, a density at about 15° C. from 0.90 g/cm3 to 0.94 g/cm3, a pour point from 7° C. to 45° C., and a calculated carbon aromaticity index of 850 or less. 2. The method of claim 1, wherein the gasoil feed stream is a vacuum gasoil having a sulfur content of at least 1 wt %. 3. The method of claim 1, wherein the uncracked gasoil product exhibits a sulfur content of at most 600 wppm. 4. The method of claim 1, wherein the uncracked gasoil product exhibits a pour point of at most 30° C. 5. The method of claim 1, wherein the uncracked gasoil product exhibits a kinematic viscosity of at most 50 cSt at about 50° C. 6. The method of claim 1, wherein the gasoil feed stream is a vacuum gasoil having a sulfur content of at least 7,500 wppm, and wherein the resulting marine and/or bunker fuel composition has a sulfur content between 900 wppm and 1000 wppm. 7. The method of claim 1, wherein the resulting marine bunker fuel composition comprises at most 30 vol %, based on all components of the marine bunker fuel composition, of components subject to a refinery cracking step. 8. The method of claim 1, wherein the resulting marine bunker fuel composition comprises at most 10 vol % of residual components, based on all components of the marine bunker fuel composition. 9. The method of claim 1, wherein the blending is accomplished such that the resulting marine bunker fuel composition comprises from 40 vol % to 100 vol % of the uncracked product. 10. The method of claim 1, wherein the blending is accomplished such that the resulting marine bunker fuel composition comprises from 80 vol % to 100 vol % of the uncracked product. 11. The method of claim 1, wherein the blending is accomplished such that the resulting marine bunker fuel composition comprises from 85 vol % to 99.99 vol % of the uncracked product. 12. The method of claim 1, wherein the resulting marine bunker fuel composition comprises up to 15 vol % of slurry oil, fractionated crude oil, or a combination thereof.
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이 특허에 인용된 특허 (18)
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