Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
2003-07-03
2008-08-05
Johnson, Edward M (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
active
07407905
ABSTRACT:
A method of reactivating a catalyst, such as a solid catalyst or a liquid catalyst. The method comprises providing a catalyst that is at least partially deactivated by fouling agents. The catalyst is contacted with a fluid reactivating agent that is at or above a critical point of the fluid reactivating agent and is of sufficient density to dissolve impurities. The fluid reactivating agent reacts with at least one fouling agent, releasing the at least one fouling agent from the catalyst. The at least one fouling agent becomes dissolved in the fluid reactivating agent and is subsequently separated or removed from the fluid reactivating agent so that the fluid reactivating agent may be reused. A system for reactivating a catalyst is also disclosed.
REFERENCES:
patent: 3725299 (1973-04-01), Turnock et al.
patent: 4058575 (1977-11-01), Cahn et al.
patent: 4124528 (1978-11-01), Modell
patent: 4605811 (1986-08-01), Tiltscher et al.
patent: 4721826 (1988-01-01), Tiltscher et al.
patent: 4956518 (1990-09-01), Child et al.
patent: 4982043 (1991-01-01), Hasselbring
patent: 5177298 (1993-01-01), Yon et al.
patent: 5304698 (1994-04-01), Husain
patent: 5310713 (1994-05-01), Kojima et al.
patent: 5326923 (1994-07-01), Cooper et al.
patent: 5345028 (1994-09-01), Alerasool
patent: 5489732 (1996-02-01), Zhang et al.
patent: 5491277 (1996-02-01), Stine et al.
patent: 5712213 (1998-01-01), Joly et al.
patent: 5907075 (1999-05-01), Subramaniam et al.
patent: 5916835 (1999-06-01), Carroll et al.
patent: 6103948 (2000-08-01), Ginosar et al.
patent: 6579821 (2003-06-01), Ginosar et al.
patent: 6610624 (2003-08-01), Horhota et al.
patent: 2273333 (1998-06-01), None
patent: 0 680 941 (1995-04-01), None
“Material Safety Data Sheet, Benzene MSDS,” Science Lab.com, accessed Jan. 19, 2008, pp. 1-8.
“Material Safety Data Sheet, Isobutylene,” Airgas, accessed Jan. 19, 2008, pp. 1-5.
Meier et al., “Atlas of Zeolite Structure Types,” 2ndRev Ed., Butterworths, 1987, pp. 1-152.
Hammershaimb, H.U. et al., “Alkylation,” Encyclopedia of Chemical Technology, 4thEdition, vol. 2, pp. 85-112.
Seapan, M. et al., Chapter 9 Decoking and Regeneration of a Hydrotreating Catalyst by Supercritical Extraction, 1989 American Chemical Society.
Zurer, P., Green Organic Synthesis Dives into Near-Critical Water, C&EN, Jan. 3, 2000, pp. 26-27.
European Patent Office Supplementary European Search Report, Aug. 11, 2004.
Fan, L. et al., Supercritical-Phase Alkylation Reaction on Solid Acid Catalysts: Mechanistic Study and Catalyst Development, Ind. Eng. Chem. Res., vol. 36, 1997, pp. 1458-1463, XP002292033.
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 21, pp. 770-800, 3rd ed. (1983)□.
J.A. Martens, et al., Estimation of the void structure and pore dimensions of molecular sieve zeolites using the hydroconversion of n-decane, Zeolites 4, 98 (1984).
W. Hölderich, et al., Industrial application of zeolite catalysts in petrochemical processes, Ger. Chem. Eng. 8, 337 (1985)□.
W. Hölderich, et al., Zeolites: Catalysts for organic syntheses, Angew. Chem. Int. Ed. Engl. 27, 226 (1988)□.
S.M. Csicsery, Catalysis by shape selective zeolites—Science and technology, Pure & Appl. Chem. 58(6), 841(1986)□.
West, Phillip B., et al., “Clamping systems for Large Downhole Seismic Sensor Arrays,” Idaho National Engineering and Environmental Laboratory, Jun. 2001.
Zhao, Dongbin et al, “Ionic Liquids: Applications in Catalysis”, Catalysis Today 74 (2002) 157-189.
Inui et al., “Effect of Modification of Acid Sites Located on the External Surface of a Gallium-Silicate Crystalline Catalyst on Reducing Coke Deposit in Paraffin Aromatization,” Ind. Eng. Chem. Res. 1997, 36, 4827-4831.
Petkovic et al., “The effect of supercritical isobutane regeneration on the nature of hydrocarbons deposited on a USY zeolite catalyst utilized for isobutane/butane alkylation,” Applied Catalysis A: General xxx (2004) xxx-xxx.
Petkovic et al., “Characterization of Coke Deposited on USY Zeolite Catalyst Under Isobutane/butane Alkylation Reaction and Supercritical Isobutane Regeneration,” 18th Annual Symposium of the Western States Catalysis Club, Feb. 27, 2004, 25 pages.
Anderson Raymond P.
Ginosar Daniel M.
Thompson David N.
Battelle Energy Alliance, LLC
Johnson Edward M
TraskBritt P.C.
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