[특허]Process for preparing diesel fuels using vegetable oils or fatty acid derivatives

ExxonMobil Research and Engineering Company

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특허 상세정보

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Process for preparing diesel fuels using vegetable oils or fatty acid derivatives

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C07C-001/00 C10G-001/08
미국특허분류(USC)	585/240; 585/242; 585/733; 585/739; 044/605
출원번호	US-0794253 (2010-06-04)
등록번호	US-8686203 (2014-04-01)
발명자 / 주소	Hanks, Patrick L. Cole, Kathryn Y. Lewis, William E.
출원인 / 주소	ExxonMobil Research and Engineering Company
대리인 / 주소	Weisberg, David M.
인용정보	피인용 횟수 : 1 인용 특허 : 14

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A process for preparing fuels, such as diesel fuels or jet fuels, by hydrotreating vegetable oils or fatty acid derivatives that may be applied to existing equipment for treating fossil fuels. The process comprises feeding hydrotreating a combined oxygenate feed stream, such as FAME, and a hydrocarbon feed stream until not more than 86 wt % of the esters in the oxygenate feed stream are converted to hydrocarbons, and optionally further hydrotreating the product stream within at least a second hydrotreatment reaction zone until at least 90 wt % of the est...

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1. A process for producing a hydrocarbon stream suitable for use as fuel from carboxylic esters, which process comprises the steps of: a) feeding to a hydrotreatment reaction zone (i) an oxygenate feed stream comprising one or more methyl or ethyl esters of carboxylic acids, and(ii) a hydrocarbon feed stream;b) contacting the feed streams within the hydrotreatment reaction zone with a gas comprising hydrogen under hydrotreatment conditions so that no more than 70 wt % of the esters in the oxygenate feed stream are converted to hydrocarbons;c) removing a hydrotreated product stream; andd) separating from the hydrotreated product stream a hydrocarbon stream suitable for use as fuel. 2. A process according to claim 1, wherein the oxygenate feed stream is derived from a plant oil, an animal oil or fat, algae, waste oil, or a combination thereof. 3. A process according to claim 1, wherein the oxygenate feed stream is obtained by transesterification of C8 to C36 carboxylic esters with an alcohol in the presence of a base catalyst. 4. A process according to claim 3, wherein the oxygenate feed stream comprises fatty acid methyl esters. 5. A process according to claim 1, wherein the hydrocarbon feed is a middle distillate, a gas oil fraction, a vacuum gas oil, or a combination thereof 6. A process according to claim 4, wherein the oxygenate feed comprises from about 1 wt % to about 15 wt % of the combined feed to the hydrotreatment reaction zone in step a). 7. A process according to claim 6, wherein the combined feed streams to the hydrotreatment reaction zone in step a) comprise not more than 5 wt % FAME. 8. A process according to claim 1, wherein the hydrotreatment in step b) is carried out at a temperature from about 150° C. to about 430° C. and a pressure from about 0.1 MPaa to about 25 MPaa. 9. A process according to claim 8, wherein the hydrotreatment in step b) is carried out at a temperature from about 250° C. to about 380° C. and a pressure from about 1 MPaa to about 15 MPaa. 10. A process according to claim 1, wherein the reaction zone has an LHSV from 0.3 hr−1 to 5 hr−1. 11. A process according to claim 1, wherein the hydrotreatment is catalyzed using a catalyst comprising two or more of Ni, Co, W, and Mo, optionally supported on alumina, silica, zirconia, titania, or carbon. 12. A process according to claim 1, wherein the hydrotreated product stream is subjected to hydroisomerization over an isomerization catalyst to improve cold flow properties of the hydrocarbon stream suitable for use as fuel. 13. A process according to claim 1, wherein the hydrocarbon stream recovered after step d) is a diesel fuel. 14. A process for producing a hydrocarbon stream suitable for use as fuel from carboxylic esters, which process comprises the steps of: a) feeding to a first hydrotreatment reactor an oxygenate feed stream comprising one or more esters of carboxylic acids, and a hydrocarbon feed stream;b) (i) contacting the feed streams within the first hydrotreatment reaction zone with a gas comprising hydrogen under hydrotreatment conditions so that no more than 50 wt % of the esters in the oxygenate feed stream are converted to hydrocarbons, (ii) removing from the first hydrotreatment reaction zone a first hydrotreated product stream, and(iii) contacting the first hydrotreated product stream within at least a second hydrotreatment reaction zone with a gas comprising hydrogen under hydrotreatment conditions until at least 90 wt % of the esters in the oxygenate feed stream are converted to hydrocarbons;c) removing from the second hydrotreatment reaction zone a second hydrotreated product stream; andd) separating from the second hydrotreated product stream a hydrocarbon stream suitable for use as fuel. 15. A process according to claim 14, wherein the oxygenate feed stream comprises one or more methyl and/or ethyl esters of carboxylic acids. 16. A process according to claim 14, wherein the oxygenate feed stream is derived from a plant oil, an animal oil or fat, algae, waste oil, or a combination thereof. 17. A process according to claim 14, wherein the oxygenate feed stream is obtained by transesterification of C8 to C36 carboxylic esters with an alcohol in the presence of a base catalyst. 18. A process according to 16, wherein the oxygenate feed stream comprises fatty acid methyl esters. 19. A process according to claim 14, wherein the hydrocarbon feed is a middle distillate, a gas oil fraction, a vacuum gas oil, or a combination thereof 20. A process according to claim 18, wherein the oxygenate feed comprises from about 1 wt % to about 15 wt % of the combined feed to the hydrotreatment reaction zone in step a). 21. A process according to claim 20, wherein the combined feed streams to the hydrotreatment reaction zone in step a) comprise not more than 5 wt % FAME. 22. A process according to claim 14, wherein the hydrotreatment in step b) is carried out under relatively mild conditions so that no more than 70 wt % of the esters in the oxygenate feed stream are converted to hydrocarbons. 23. A process according to claim 14, wherein the hydrotreatment in step b) is carried out at a temperature from about 150° C. to about 430° C. and a pressure from about 0.1 MPaa to about 25 MPaa. 24. A process according to claim 23, wherein the hydrotreatment in step b) is carried out at a temperature from about 250° C. to about 380° C. and a pressure from about 1 MPaa to about 15 MPaa. 25. A process according to claim 16, wherein the hydrotreatment in step b) is carried out under conditions so that no more than 40 wt %, of the esters in the oxygenate feed stream are converted to hydrocarbons in the first hydrotreatment reaction zone. 26. A process according to claim 25, wherein the temperature in each reaction zone is from about 150° C. to about 300° C., and the pressure in each reaction zone is from about 1 MPaa to about 15 MPaa 27. A process according to claim 14, wherein the or each reaction zone has an LHSV from 0.3 hr−1 to 5 hr−1. 28. A process according to claim 14, wherein each hydrotreatment is catalyzed using a catalyst comprising two or more of Ni, Co, W, and Mo, optionally supported on alumina, silica, zirconia, titania, or carbon. 29. A process according to claim 28, wherein each catalyst comprises a combination of Ni and Mo, or Co and Mo. 30. A process according to claim 28, wherein each reaction zone comprises a stacked bed of NiMo catalyst, followed by a CoMo catalyst. 31. A process according to claim 14, wherein the hydrotreated product stream is subjected to hydroisomerization over an isomerization catalyst to improve cold flow properties of the hydrocarbon stream suitable for use as fuel. 32. A process according to claim 14, wherein the first hydrotreated product stream removed from the first hydrotreatment reaction zone is cooled before being hydrotreated within the second hydrotreatment reaction zone. 33. A process according to claim 14, wherein the first hydrotreated product stream is passed through a separator to remove light ends, CO, CO2, and water before being hydrotreated within the second hydrotreatment reaction zone. 34. A process according to claim 14, wherein the hydrocarbon stream recovered after step d) is a diesel fuel.

이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 피인용횟수: 1

Iguchi, Yasutoshi; Ono, Hideki; Koyama, Akira. Fuel oil base and aviation fuel composition containing same. USP2016119505986.

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Process for preparing diesel fuels using vegetable oils or fatty acid derivatives

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Process for preparing diesel fuels using vegetable oils or fatty acid derivatives

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