US 2003/0157003 A1Published application

Catalyst holder and agitation system for converting stirred tank reactor to fixed bed reactor

AssigneeAir Products and Chemicals, Inc.

InventorsReinaldo Mario Machado, James Edward Koniski, Stephen Kohler

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Abstract

This invention relates to apparatus particularly a monolith catalytic reactor in a stirred tank reactor. The stirred tank reactor including the fixed bed catalytic reactor apparatus comprises: an housing having an open top and open bottom portion supportably maintained with said tank, said housing having a substantially outwardly extending, horizontal baffle near its top portion said baffle having a least one perforation in its surface, and said housing having at least one perforation in the wall near its top portion; a fixed bed catalyst system supportably retained within said housing permitting both liquid and gas flow therethrough; and, an agitator shaft terminating in a turbine blade substantially adjacent the perforation in the wall of said housing, said agitator having a passageway including an opening in an upper portion thereof to the interior of an upper part of said tank and terminating in an opening adjacent the turbine blade.

Claims12

Dependent claims

An apparatus for effecting a reaction between a reactant gas and a reactant liquid in a stirred autoclave which includes a catalyst holder which comprises:

an autoclave having an opening therein to permit access to its interior, a cover for the opening and at least one line to introduce reactants and remove product;
a fixed bed catalyst holder disposed within the autoclave comprised of a housing that is open at its top and at its bottom and having at least one side wall perforation at an upper portion of the housing and extending through the housing to permit flow of reactant liquid and reactant gas from the bottom of the housing and then from the interior of the housing to a point exterior of the housing;
a horizontal baffle connected at upper portion of the housing above said side wall perforation, the baffle configured to the contour of the interior wall of the autoclave to limit flow of reactant gas and reactant liquid between the edge of the baffle and the interior wall of the autoclave, said baffle having at least one perforation present in the baffle to permit flow of reactant liquid and reactant gas therethrough;
a side baffle external to the housing or affixed to the interior wall of the autoclave for directing reactant gas and reactant liquid downwardly from said side wall perforation to the inlet of the fixed bed catalyst;
an agitation system that includes a motor, an agitation shaft extending into the autoclave terminating in a turbine impeller;
and,
a fixed bed catalyst retained within the housing to permit reactant liquid and reactant gas to pass from the bottom of the housing through the fixed bed catalyst and out the upper end of the fixed bed catalyst.

4 more elements

In a process for carrying out a reaction between a reactant gas and reactant liquid in a stirred tank having at least a portion of reactant gas residing in a headspace portion of said autoclave, the improvement which comprises:

inserting a fixed bed catalyst holder in said tank comprised of a housing having an open top and open bottom portion supportably maintained with said tank, said housing having a substantially outwardly extending, horizontal baffle near its top portion and adapted for substantial sealing engagement with the interior wall of said tank, said baffle having a least one perforation in its surface, and said housing having at least one side wall perforation in the wall near its upper portion permitting flow from the interior of the housing to said tank;
supportably retaining a fixed bed catalyst within said housing permitting both liquid and reactant gas flow therethrough;
extending an agitator shaft into said tank and terminating in a turbine blade substantially adjacent the side wall perforation in the wall of said housing, said agitator having a gas passageway including an opening in the headspace portion of said autoclave and terminating in an opening adjacent the turbine blade;
effecting agitation at a point adjacent the side wall perforation in the wall of said housing causing liquid and reactant gas to be passed from the interior of the housing through the perforations to the interior of the autoclave;
drawing reactant gas hydrogen from the headspace in said autoclave through a passageway in said agitator to a point adjacent the turbine;
forcing a mixture of reactant liquid and reactant gas via baffling from a point adjacent the side wall perforations in said housing to the inlet of the fixed bed catalyst by means of baffles extending from the top to at least the bottom portion of said housing;
and then,
reacting the mixture of reactant gas and reactant liquid.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/076,813Filed 15 Feb 2002
Published: 21 Aug 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

C07C 209/36
By reduction of nitro groups: by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing…
B01J 3/04
Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor: pressure…
B01J 8/0292
With stationary particles, e.g. in fixed beds: with stationary packing material in the bed, e.g. bricks, wire rings, baffles
B01J 10/007
Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially…