Methods of reducing impurities in diesel fuel
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0582825
(2017-05-01)
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등록번호 |
US-10011780
(2018-07-03)
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발명자
/ 주소 |
- Podsiadlo, Paul
- Zhang, Lei
- Benitez, Kiara M.
- Gupta, Himanshu
- Lacy, Darryl D.
- Weigel, Scott J.
- Xu, Xiaochun
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출원인 / 주소 |
- EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
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인용정보 |
피인용 횟수 :
0 인용 특허 :
2 |
초록
Methods for reducing impurities and improving color in liquid hydrocarbon products (e.g., diesel fuel) are provided herein.
대표청구항
▼
1. A method for reducing impurities in a diesel fuel comprising contacting the diesel fuel with activated carbon, wherein the diesel fuel has a change in color level of greater than 2.7, wherein the change in color level is measured as a difference between the diesel fuel color level prior to contac
1. A method for reducing impurities in a diesel fuel comprising contacting the diesel fuel with activated carbon, wherein the diesel fuel has a change in color level of greater than 2.7, wherein the change in color level is measured as a difference between the diesel fuel color level prior to contact with the activated carbon and the diesel fuel color level after contact with the activated carbon, and wherein the color level is measured according to D6045 ASTM, wherein the impurities comprise double ring aromatics and multi-ring aromatics, and at least about 15% of the double ring aromatics and multi-ring aromatics are removed from the diesel fuel. 2. The method of claim 1, wherein the diesel fuel has a change in color level of at least about 3.5. 3. The method of claim 1, wherein the impurities further comprise single ring aromatics and polar compounds selected from the group consisting of nitrogen-containing compounds, sulfur-containing compounds and a combination thereof. 4. The method of claim 1, wherein at least about 20% of the multi-ring aromatics are removed from the diesel fuel. 5. The method of claim 1, wherein at least about 30% of the multi-ring aromatics are removed from the diesel fuel. 6. The method of claim 1, wherein at least about 10% of the double ring aromatics are removed from the diesel fuel. 7. The method of claim 1, wherein the diesel fuel is contacted with the activated carbon at a temperature of about 18° C. to about 28° C. and/or a pressure of about 5 psig (about 35 kPa) to about 16 psig (about 110 kPa). 8. The method of claim 1, wherein the diesel fuel prior to contact with the activated carbon comprises at most about 10 ppm sulfur. 9. The method of claim 1, wherein the diesel fuel prior to contact with the activated carbon comprises one or more of the following: (i) about 0.5 ppm to about 10 ppm sulfur;(ii) about 0.05 ppm to about 10 ppm nitrogen;(iii) about 1.0 wt % to about 15 wt % non-cyclic paraffins;(iv) about 25 wt % to about 70 wt % naphthenes; and(v) about 30 wt % to about 55 wt % aromatics. 10. The method of claim 9, wherein the diesel fuel prior to contact with the activated carbon comprises (i)-(v). 11. The method of claim 1, wherein the diesel fuel has a color level of greater than about 3.0 as measured according to D6045 ASTM prior to contact with the activated carbon. 12. The method of claim 1, wherein the diesel fuel has a color level of at least about 4.5 as measured according to D6045 ASTM prior to contact with the activated carbon. 13. The method of claim 1, wherein the diesel fuel has a color level of at most about 3.0 as measured according to D6045 ASTM following contact with the activated carbon. 14. The method of claim 1, wherein the diesel fuel has a color level of at most about 2.0 as measured according to D6045 ASTM following contact with the activated carbon. 15. The method of claim 1, wherein the activated carbon has a surface area of at least about 1000 m2/g. 16. The method of claim 1, wherein the activated carbon is packed into a column and the diesel fuel is contacted therein. 17. The method of claim 1, wherein the diesel fuel is contacted with the activated carbon following hydrotreatment of the diesel fuel. 18. A method for improving color in a diesel fuel product comprising contacting the diesel fuel product comprising double ring aromatics and multi-ring aromatics with activated carbon; andretrieving an improved color diesel fuel product through removal of at least about 15% of the double ring aromatics and multi-ring aromatics from the diesel fuel product, which improved color diesel fuel product has undergone a change in color level of greater than 2.7, wherein the change in color level is measured as a difference between the diesel fuel product color level prior to contact with the activated carbon and the improved diesel fuel color product level after contact with the activated carbon, and wherein the color level is measured according to D6045 ASTM. 19. The method of claim 18, wherein the improved color diesel fuel product has undergone a change in color level of at least about 3.0. 20. The method of claim 18, wherein the improved color diesel fuel product has undergone a change in color level of at least about 3.5. 21. The method of claim 18, wherein the diesel fuel product has a color level of greater than about 3.0 as measured according to D6045 ASTM prior to contact with the activated carbon. 22. The method of claim 18, wherein the diesel fuel product has a color level of at least about 5.0 as measured according to D6045 ASTM prior to contact with the activated carbon. 23. The method of claim 18, wherein the improved color diesel fuel product has a color level of at most about 3.0 as measured according to D6045 ASTM. 24. The method of claim 18, wherein the improved color diesel fuel product has a color level of at most about 2.0 as measured according to D6045 ASTM. 25. The method of claim 18, wherein the diesel fuel product is contacted with the activated carbon at a temperature of about 18° C. to about 28° C. and/or a pressure of about 5 psig (about 35 kPag) to about 15 psig (about 110 kPag). 26. The method of claim 18, wherein the diesel fuel product is contacted with the activated carbon following hydrotreatment of the diesel fuel. 27. The method of claim 18, wherein the activated carbon is packed into a column.
이 특허에 인용된 특허 (2)
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Carroll, Michael B.; Smith, Fritz A.; Bixel, John C., Integrated lubricant upgrading process.
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Beck Jeffrey S. (Princeton NJ), Method for synthesizing mesoporous crystalline material.
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