Fixed-bed catalyst support for a hydroprocessing reactor
a hydroprocessing reactor and fixed-bed technology, which is applied in the direction of bed hydrotreatment process equipment, physical/chemical process catalysts, chemistry equipment and processes, etc., can solve the problems of insufficient active catalyst loading into the lower catalyst bed, insufficient inert bed supports, and insufficient active catalyst loading
Inactive Publication Date: 2015-12-31
CHEVROU USA INC
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- Application Information
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Benefits of technology
The solution reduces dead spaces, increases catalyst loading capacity, and lowers operational costs by eliminating the need for inert materials, while maintaining reactor efficiency and product quality.
Problems solved by technology
However, such designs produce empty or dead spaces at the bottom of the reactor.
In addition, the amount of active catalyst that can be loaded into the lower catalyst bed is limited by the static load limits of the horizontal tray.
This limitation is significant because available feedstocks are become increasingly disadvantaged, requiring more hydroprocessing which, in turn, necessitates loading more catalyst material into existing reactors.
While use of inert materials as the lower catalyst bed support allows for the loading of more active catalyst into the lower bed as compared to a conventional horizontal tray, such inert bed supports add substantial additional costs.
In addition, over time the inert materials breakdown, producing fines that must be collected and removed downstream from the reactor, and requires periodic replacement of the inert material.
Method used
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[0023]It has been found the upwardly convex porous fixed-bed catalyst support of the present invention affords benefits over catalyst bed support systems known in the art. Such benefits include, without limitation, reduction or elimination of empty or dead spaces at the bottom of conventional hydroprocessing reactors, increased catalyst loading capacity, and reduced cost. Specific embodiments and benefits are apparent from the detailed description provided herein. It should be understood, however, that the detailed description and specific examples, while indicating embodiments among those preferred, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
[0024]The present invention is directed to an upwardly convex porous fixed-bed catalyst support for a hydroprocessing reactor. Referring to FIG. 2, a cross-sectional diagram of a lower portion of a fixed-bed down-flow reactor 10 is illustrated.
[0025]The reactor 10 includes a vessel sh...
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Abstract
The present invention is directed to an upwardly convex fixed-bed catalyst support for a hydroprocessing reactor. The catalyst bed support includes an upwardly convex annular-shaped plate having an outer end in communication with the reactor inner surface, and an inner end in communication with a horizontal hub assembly.
Description
FIELD OF THE INVENTION[0001]This invention is directed to a fixed-bed catalyst support for a hydroprocessing reactor. Such hydroprocessing reactors are used in the petroleum and chemical processing industries for carrying out catalytic reactions of hydrocarbonaceous feedstocks in the presence of hydrogen, at elevated temperatures and pressures. Exemplary reactions including hydrotreating, hydrofinishing, hydrocracking and hydrodewaxing.BACKGROUND OF THE INVENTION[0002]In fixed-bed hydroprocessing reactors, gas and liquid reactants (e.g.[0003]hydrogen and a hydrocarbonaceous feedstock) flow downward through one or more beds of solid catalyst extrudates. As the reactants flow downward through the catalyst beds, the reactants react to produce the desired products. Gas phase reactants such as hydrogen are consumed, and heat is generated by the catalytic reactions.[0004]FIG. 1 is a cross-sectional schematic diagram of a conventional vertical, down-flow reactor such as the one disclosed i...
Claims
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IPC IPC(8): B01J8/02
CPCB01J8/025B01J8/0492B01J2208/027B01J2208/00884C10G49/002B01J8/0453B01J8/04
InventorBOYAK, CRAIGKILLEN, RALPH EVANS
OwnerCHEVROU USA INC