Patent EP0450860A2 successfully refreshed from Google Patents.
EP0450860A2
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EP
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Method of operating a slurry bubble column
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1991-03-27
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Granted: —
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Expires: 2011-03-27
Abstract
Abstract A method for optimally operating a three phase slurry bubble column is described. The constituents of the three phases, gas, liquid, and solids, are determined by the chemical reaction in the column. The method includes injecting the gas phase into the column with an appropriate velocity so that the solid phase is fluidized while still maintaining "plug flow" over the column length.
Inventors
- 👤 Eric Herbolzheimer
- 👤 Enrique Iglesia
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:52
CPC Classifications
C; C10; C10G; C10G2/00; C10G2/30; C10G2/32; C10G2/34; C10G2/342; B; B01; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/22; B01J2208/00; B01J2208/00008; B01J2208/00725; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
A method for optimally operating a three phase slurry bubble column in which solid particles are fluidized in the liquid phase by bubbles of the gas phase, comprising: (a) injecting the gas phase into said column such that the average gas velocity along said columns, U g in the substantial absence of slug flow; (b) fluidizing the solid phase of solid particles of average diameter, d p , in the liquid phase, wherein the settling velocity of said solid particles in said liquid phase is: and the dispersion coefficient of said solid particles in said liquid phase is D, said solid phase fluidized to a height, H, where: and (c) maintaining plug flow in said column by said gas phase whose velocity: U s = average catalytic particle settling velocity wherein ρ s = effective density of the particles ρℓ = density of the liquid µ = viscosity of the liquid f(c) = hindered settling function c = volume fraction of solids in the slurry (liquid plus solids) U L = liquid velocity along the column H = height of the expanded liquid of said reactor
Claim 2
Dependent Claim
17 words
The method of claim 1 wherein said solid particles include a catalyst suitable for hydrogenation of CO.
Claim 3
Dependent Claim
41 words
The method of claim 1 or claim 2 wherein said liquid is hydrocarbon synthesis wax, said solid is a catalyst suitable for the synthesis of such wax at typical Fischer-Tropsch conditions, and U s = 1.1 x 10⁻⁴d 2 p .
Claim 4
Independent Claim
23 words
The method of any one of claims 1 to 3 wherein said gas velocity, Ug ≧ 1 H/D (e.g., Ug ≧ 10 H/D).
Claim 5
Independent Claim
32 words
The method of any one of claims 1 to 4 wherein said (catalyst) particles have a diameter greater than 5 microns (5 nm), e.g., a diameter greater than 30 microns (30 nm).
Claim 6
Independent Claim
17 words
The method of any one of claims 1 to 5 wherein H is greater than 3 meters.
Claim 7
Independent Claim
27 words
The method of any one of claims 1 to 6 wherein said height, H, includes at least 95% of the catalyst on which the catalyst reaction occurs.
Claim 8
Independent Claim
24 words
The method of any one of claims 1 to 7 wherein U L ≦ 1/2 U s , e.g., U L ≦ 0.5 cm/second.
Claim 9
Independent Claim
21 words
The method of any one of claims 1 to 8 wherein U L is determined in the absence of liquid recycle.
Claim 10
Independent Claim
21 words
The method of any one of claims 1 to 10 wherein said diameter of the reactor is greater than 5 cm.
References Cited (Backward Citations)
No citation records indexed.
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