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A diesel desulfurization method has various steps including: implementing a modified oxidative desulfurization (UAOD) process. The UAOD has the steps of: mixing diesel fuel with room temperature ionic liquid, oxidant, phase transfer catalyst, and acid catalyst in a tank in a mix; recycling the ionic liquid and recycling the acid catalyst in aqueous phase. A step is to move the sulfur from the diesel fuel in a fluidized bed reactor (FBR) having bed reactor material. The process can be improved with ultrasound during mixing, or a high shear mixer. The bed reactor is preferably acidic alumina for adsorbing oxidized sulfur. The oxidant is preferably hydrogen peroxide (H2O2). The acid catalyst is preferably a mixture of Acetic acid and Tri-fluoro acetic acid.

Titel:	Diesel desulfurization method
Autor/in / Beteiligte Person:	Cheng, Shun-Sheng
Link:	Zum Volltext
Veröffentlichung:	2009
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20090236266 Publication Date: September 24, 2009 Appl. No: 12/077643 Application Filed: March 20, 2008 Claim: 1. A diesel desulfurization method comprising the steps of: a. implementing a modified oxidative desulfurization (UAOD) process comprising the steps of: mixing diesel fuel with room temperature ionic liquid, oxidant, phase transfer catalyst, and acid catalyst in a tank in a mix; b. recycling the ionic liquid and recycling the acid catalyst in aqueous phase; c. removing the sulfur from the diesel fuel in a fluidized bed reactor (FBR) having bed reactor material. Claim: 2. The diesel desulfurization method of claim 1, further comprising the step of using ultrasound while mixing. Claim: 3. The diesel desulfurization method of claim 2, further comprising the step of using ultrasound while mixing to expose the mix to at least 10 minutes of sonication. Claim: 4. The diesel desulfurization method of claim 1, wherein the mixing is done with a high shear mixer. Claim: 5. The diesel desulfurization method of claim 1, wherein the bed reactor material is acidic alumina for adsorbing oxidized sulfur. Claim: 6. The diesel desulfurization method of claim 1, wherein the oxidant is hydrogen peroxide (H2O2). Claim: 7. The diesel desulfurization method of claim 1, wherein the acid catalyst is Acetic acid and Tri-fluoro acetic acid. Claim: 8. The diesel desulfurization method of claim 1, wherein the acid catalyst is between 15% Tri-fluoro acetic acid with 85% Acetic acid and 40% Tri-fluoro acetic acid with 60% Acetic acid. Claim: 9. The diesel desulfurization method of claim 1, wherein the phase transfer agent is Tetraoctylammonium fluoride. Claim: 10. The diesel desulfurization method of claim 1, further comprising use of a solid catalyst which is Ti—B Solid Catalyst. Claim: 11. The diesel desulfurization method of claim 1, further comprising the step of using acetonitrile as a second phase transfer agent. Claim: 12. The diesel desulfurization method of claim 1, wherein the ionic liquid is 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6], 1-butyl-3-methylimidazolium octyl sulfate [BMIM][OcSO4] and 1-ethyl-3-methylimidazolium ethyl sulfate [EMIM][EtSO4]. Claim: 13. A diesel desulfurization method comprising the steps of: a. implementing a modified oxidative desulfurization (UAOD) process comprising the steps of: mixing diesel fuel with room temperature ionic liquid, oxidant, phase transfer catalyst, and acid catalyst in a tank in a mix; wherein the oxidant is hydrogen peroxide (H2O2); b. recycling the ionic liquid and recycling the acid catalyst in aqueous phase; c. removing the sulfur from the diesel fuel in a fluidized bed reactor (FBR) having bed reactor material wherein the bed reactor material is acidic alumina for adsorbing oxidized sulfur. Claim: 14. The diesel desulfurization method of claim 13, further comprising the step of using ultrasound while mixing. Claim: 15. The diesel desulfurization method of claim 13, wherein the acid catalyst is between 15% Tri-fluoro acetic acid with 85% Acetic acid and 40% Tri-fluoro acetic acid with 60% Acetic acid. Claim: 16. The diesel desulfurization method of claim 13, wherein the phase transfer agent is Tetraoctylammonium fluoride. Claim: 17. The diesel desulfurization method of claim 13, further comprising use of a solid catalyst which is Ti—B Solid Catalyst. Claim: 18. The diesel desulfurization method of claim 13, further comprising the step of using acetonitrile as a second phase transfer agent. Claim: 19. The diesel desulfurization method of claim 13, wherein the ionic liquid is 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6], 1-butyl-3-methylimidazolium octyl sulfate [BMIM][OcSO4] and 1-ethyl-3-methylimidazolium ethyl sulfate [EMIM][EtSO4]. Current U.S. Class: 208/213 Current International Class: 10

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Diesel desulfurization method