Chemistry: fischer-tropsch processes; or purification or recover – Plural zones each having a fischer-tropsch reaction
Reexamination Certificate
2006-10-03
2006-10-03
Parsa, J. (Department: 1621)
Chemistry: fischer-tropsch processes; or purification or recover
Plural zones each having a fischer-tropsch reaction
C518S700000, C518S705000
Reexamination Certificate
active
07115669
ABSTRACT:
A gas-agitated multiphase reactor system that is effective for enabling maximum reactor productivity or minimizing reactor volume comprising at least two stages with or without recycle, wherein inlet gas superficial velocity is at least 20 cm/sec at Fischer-Tropsch synthesis, yielding a total syngas conversion of greater than about 90%, while syngas conversion in each reactor is less than 60%. More specifically, the total reactor volume is held to a minimum such that minimum reactor volume is less than 0.02 cubic meters total reactor volume/(kg C5+/hr production).
REFERENCES:
patent: 5015366 (1991-05-01), Ruetber et al.
patent: 5348982 (1994-09-01), Herbolzheimer et al.
patent: 5407644 (1995-04-01), Rytter et al.
patent: 5422375 (1995-06-01), Rytter et al.
patent: 5520890 (1996-05-01), Lorentzen et al.
patent: 5527473 (1996-06-01), Ackerman
patent: 5639798 (1997-06-01), Wilson et al.
patent: 5827902 (1998-10-01), Maretto et al.
patent: 5939350 (1999-08-01), Singleton et al.
patent: 5961933 (1999-10-01), Casanave et al.
patent: 6060524 (2000-05-01), Casanave et al.
patent: 6156809 (2000-12-01), Clark et al.
patent: 6169120 (2001-01-01), Beer
Article entitled “A theoretical model for the performance of bubble-column reactors used for Fischer-Tropsch synthesis,” by David Stern et al., Chemical Engineering Science, vol. 40, No. 9, pp. 1665-1677, 1985.
Article entitled “Analysis of the design of bubble-column reactors for Fischer-Tropsch synthesis,” by David Stern et al., Ind. Eng. Chem. Process Des. Dev., 24, pp. 1213-1219, 1985.
Article entitled “Modeling of bubble column slurry reactors for multiple reactions,” by D.B. Bukur et al., AIChE Journal, vol. 33, No. 7, pp. 1197-1206, 1987.
Article entitled “Comparison of axial dispersion and mixing cell models for design and simulation of Fischer-Tropsch slurry bubble column reactors,” by J.R. Turner et al., Chemical Engineering Science, vol. 45, No. 8, pp. 2317-2324, 1990.
Article entitled “Liquid backmixing in bubble columns,” by Y.B. Yang et al., Chemical Engineering Science, vol. 47, No. 9-11, pp. 2859-2864, 1992.
Article entitled “Mass transfer in a three-phase reactor operating at elevated pressures and temperatures,” by Min-Yan Change et al., Chemical Engineering Science, vol. 47, No. 7, pp. 1779-1790, 1992.
Article entitled “Effect of scale on liquid recirculation in bubble columns,” by Sailesh B. Kumar et al., Chemical Engineering Science, vol. 49, No. 24B, pp. 5637-5652, 1994.
Article entitled “Bubble column reactors in Fischer-Tropsch synthesis,” by S.C. Saxena, Catal. Rev.—Sci. Eng., 37(2), pp. 227-309, 1995.
Article entitled “Gas holdup in slurry bubbly columns: effect of column diameter and slurry concentrations,” by Rajamani Krishna et al., AIChE Journal, vol. 43, No. 2, pp. 311-316, 1997.
Article entitled “Process development and scale up: IV. Case history of the development of Fischer-Tropsch synthesis process,” by S.T. Sie, Reviews in Chemical Engineering, vol. 14, No. 2, pp. 109-157, 1998.
Article entitled “Numerical simulation of gas-liquid dynamic in cylindrical bubble column rectors,” by Jayanta Sanyal et al., Chemical Engineering Science, vol. 54, pp. 5071-5083, 1999.
Article entitled “Dynamic simulation of bubby flow in bubble columns,” by Y. Pan et al, Chemical Engineering Science, vol. 54, pp. 2481-2489, 1999.
Article entitled “Modelling of a bubble column slurry reactor for Fischer-Tropsch synthesis,” by C. Maretto et al., Catalysis Today, vol. 52, pp. 279-289, 1999.
Article entitled “Gas holdup and mass transfer in bubble column reactors operated at elevated pressure,” by H.M. Letzel et al., Chemical Engineering Science, vol. 54, pp. 2237-2246, 1999.
Article entitled “Multicomponent reaction engineering model for Fe-catalyzed Fischer-Tropsch synthesis in commercial scale slurry bubble column reactors,” by Gerard P. van der Laan et al., Chemical Engineering Science, vol. 54, pp. 5013-5019, 1999.
Article entitled “Fundamentals and selection of advanced Fischer-Tropsch reactors,” by S.T. Sie et al., Applied Catalysis A: General 186, pp. 55-70, 1999.
Article entitled “Hydrodynamic simulation of methanol synthesis in gas-liquid slurry bubble column reactors,” by Yuanxiang Wu et al., Chemical Engineering Science, vol. 55, pp. 573-587, 2000.
Article entitled “Hydrodynamic Characterization of Slurry Bubble-Column Reactors for Fischer-Tropsch Synthesis,” by N.B. Jackson et al., Proc.—Annu. Int. Pittsburgh Coal Conf. (1996), 13th(vol. 2), 1226-1231.
N.B. Jackson et al.,Hydrodynamic Characterization of Slurry Bubble-Column Reactors for Fischer-Tropsch Synthesis, Proc.-Annu. Int. Pittsburgh Coal Conf. (1996), 13thvol. 2, 1226-1231.
PCT International Search Report for PCT Application No. PCT/US02/23796 dated Mar. 14, 2003.
Wright Harold A.
Zhang Jianping
Conley & Rose, P.C.
ConocoPhillips Company
Parsa J.
LandOfFree
Minimizing the volume or maximizing the production rate of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Minimizing the volume or maximizing the production rate of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Minimizing the volume or maximizing the production rate of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3676487