Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1992-12-18
1994-07-26
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422224, 422227, 422231, 422239, F27B 1508, B01J 820
Patent
active
053325524
ABSTRACT:
Slurry bubble columns equipped with downcomers which have high efficiency gas disengagement means fitted on top of the slurry liquid reaction mixture comprising an inverted channel having a gas vent extending out of the apex of the inverted channel and a liquid by-pass pipe extending from the side of the inverted channel at a point below the apex to under the liquid level and emptying into the downcomer. The inverted channel is fitted to the top of said downcomer and the bottom edge of which inverted channel is in contact with the surface of the slurry mixture in the slurry bubble column reaction zone. Improved catalyst distribution and circulation, mass and heat transfer results from catalyst in gas-lean slurry flowing through the liquid by-pass tubes in the inverted channel and flowing into and down the downcomer to the bottom of the bubble column reactor. Hydrogen or any rejuvenating gas can be introduced into the bottom of the downcomer to restore catalyst activity as the catalyst moves down the downcomer.
REFERENCES:
patent: 2853369 (1958-09-01), Kolbel
patent: 2868627 (1959-01-01), Kolbel et al.
patent: 3414386 (1968-12-01), Mattix
patent: 4751057 (1988-06-01), Westerman
patent: 5211917 (1993-05-01), Hookham
patent: 5219532 (1993-06-01), Buttke et al.
"Effects of Fine Bubbles on Flow Patterns in Bubble Column with Suspended Solid Particles" Morooka, et al, J. Chem. Eng. of Japan, vol. 19, No. 6, 1986, pp. 507-512.
"Gas Holdup and Volumetric Liquid-Phase Mass Transfer Coefficient in Solid Suspended Bubble Column with Draught Tube", Koide, et al, J. Chem Eng. of Japan, vol. 18, No. 3, 1985, pp. 248-254.
"Application of Airlift Gas-Liquid-Solid Reactors in Biotechnology", Siegel and Robinson, Chem Eng. Science vol. 47, No. 13/14, pp. 3215-3229, 1992.
"The Catalytic Synthesis of Hydrocarbons from H.sub.2 /CO Mixtures over the Group VIII Metals", Vannice, J of Catalysis 37, 449-461, (1975).
"Hydrocarbon Synthesis, Hydrogenation and Cyclization" Emmett, Catalysis, vol. IV, pp. 103-108, Reinhold Publishing Corp. 1956.
"Titania-Supported Metals as CO Hydrogenation Catalysts", Vannice, Journal of Catalysis 74, 199-202 (1982).
"Sparged Loop Reactors" Joshi et al, The Canadian Journal of Chemical Engineering, vol. 68, Oct. 1990, 705-741.
"Reaction Technology in Bubble Columns" Deckwer, Fundamentals of Chemical Technology Process Technology of the Chemical and Related Industries, Otto Salle Verlag Publishers, Sauerlander Publishing 1985, Chapter 1.
"Loop Reactors" Blenke, Adv. Biochem eng. vol. 13, 1979, pp. 121-214.
Allocca Joseph J.
Exxon Research and Engineering Company
Santiago Amalia
Warden Robert J.
LandOfFree
Enhanced gas separation for bubble column draft tubes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Enhanced gas separation for bubble column draft tubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced gas separation for bubble column draft tubes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1051737