Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2011-08-23
2011-08-23
Singh, Prem C (Department: 1771)
Mineral oils: processes and products
Refining
Sulfur removal
C208S196000, C208S20800M, C208S240000, C208S243000, C208S244000, C208S245000, C208S246000, C208S307000, C366S176200, C138S137000, C138S140000
Reexamination Certificate
active
08002971
ABSTRACT:
Processes and systems associated with hydrodynamic cavitation-catalyzed oxidation of sulfur-containing substances in a fluid are described. In one example method, carbonaceous fluid is combined with at least one oxidant to form a mixture and then the mixture is flowed through at least one local constriction in a flow-through chamber at a sufficient pressure and flow rate to create hydrodynamic cavitation in the flowing mixture having a power density of between about 3,600 kWatts/cm2and about 56,000 kWatts/cm2measured at the surface of the local constriction normal to the direction of fluid flow. The creation of hydrodynamic cavitation in the flowing mixture initiates one or more chemical reactions that, at least in part, oxidize at least some of the sulfur-containing substances in the carbonaceous fluid. An example system includes a device configured to mix a carbonaceous fluid and one or more oxidants, at least one cavitation chamber configured to produce cavitation bubbles in the mixture, and at least one elevated pressure zone configured to collapse the cavitation bubbles, thereby catalyzing oxidation of the sulfur-containing substances.
REFERENCES:
patent: 3505210 (1970-04-01), Heimlich et al.
patent: 3647683 (1972-03-01), Kelley et al.
patent: 5368054 (1994-11-01), Koretsky et al.
patent: 5810052 (1998-09-01), Kozyuk
patent: 5937906 (1999-08-01), Kozyuk
patent: 5958224 (1999-09-01), Ho et al.
patent: 5969207 (1999-10-01), Kozyuk
patent: 5971601 (1999-10-01), Kozyuk
patent: 6012492 (2000-01-01), Kozyuk
patent: 6402939 (2002-06-01), Yen et al.
patent: 6402940 (2002-06-01), Rappas
patent: 6406616 (2002-06-01), Rappas et al.
patent: 6500219 (2002-12-01), Gunnerman
patent: 6502979 (2003-01-01), Kozyuk
patent: 7086777 (2006-08-01), Kozyuk
patent: 2003/0014911 (2003-01-01), Gunnerman
patent: 2004/0035753 (2004-02-01), Cullen
patent: 2006/0081501 (2006-04-01), Kozyuk
patent: 02074884 (2002-09-01), None
patent: 2006044041 (2006-04-01), None
U.S. Appl. No. 10/969,682; Office Action dated Sep. 25, 2006.
U.S. Appl. No. 10/969,682; Office Action dated Apr. 3, 2007.
U.S. Appl. No. 10/969,682; Office Action dated Jul. 25, 2007.
U.S. Appl. No. 10/969,682; Office Action dated Jan. 8, 2008.
PCT/US2009/046574; Authorized Officer Schon, Micheala; International Search Report and Written Opinion dated Jul. 5, 2010.
A New Method for Obtaining Ultra-Low Sulfur Diesel Fuel Via Ultrasound Assisted Oxidative Desulfurization; Mei et al.; May 23, 2002.
Modeling of Hydrodynamic Cavitation Reactors: A Unified Approach; Moholkar et al.; Nov. 20, 2001.
A Review of Desulfurization of Light Oil Based on Selective Oxidation, Dishun et al.; http://www.chemistrymag.org/cji/2004/063017.htm; Mar. 21, 2004 vol. 6 No. 3 p. 17.
Unipure's Oxidative Desulfurization Process Creates New Market Opportunities for Supply of Ultra-Low Sulfur Fuels, Levy et al. prepared for presentation at AlChE 2002 Spring Meeting, New Orleans Mar. 13, 2002; Session on Non-Conventional Technology for Desulfurization, Copyright UniPure Corp. Dec. 2001.
Mei H et al: “A new method for obtaining ultra-low sulfur diesel fuel via ultrasound assisted oxidative desulfurization” Fuel, IPC Science and Technology Press, Guildford, GB LNKD-D01:10.1016/S0016-2361-(02)00318-6, vol. 82, No. 4, Mar. 1, 2003, pp. 405-414, XP004397440 ISSN: 0016-2361.
Moholkar et al:: “Modelling of hydrodynamic cavitation reactors: a unified approach” Chemical Engineering Science, Oxford, GB, vol. 56, Nov. 20, 2001, pp. 6295-6302, XP002578329 ISSN: 0009-2509 [retrieved on Apr. 19, 2010].
Arisdyne Systems, Inc.
Pearne & Gordon LLP
Singh Prem C
LandOfFree
Desulfurization process and systems utilizing hydrodynamic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Desulfurization process and systems utilizing hydrodynamic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Desulfurization process and systems utilizing hydrodynamic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2752034