Multi-tube radial bed reactor

Patent metadata

Field	Value
Publication number	US-9486767-B2
Application number	US-201514712965-A
Country	US
Kind code	B2
Filing date	May 15, 2015
Priority date	May 16, 2014
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

The present invention concerns a radial bed reactor comprising a vessel provided with a reaction zone with a moving catalyst bed. The reactor further comprises, inside the reaction zone:
at least two feed distribution tubes, each having a first end in communication with the feed inlet means and a second, closed end, the distribution tubes extending in a substantially vertical manner and being designed to allow the feed to pass through the reaction zone and to retain the catalysts; and at least two effluent collection tubes, each having a first end ( 14 ) communicating with the effluent outlet means and a second, closed end ( 15 ), the collection tubes extending in a substantially vertical manner and being designed to allow effluent to pass through the collection tube and to retain the catalysts.

First claim

The invention claimed is:

1. A reactor ( 1 ) extending along a vertical axis, comprising:
a vessel provided with a reaction zone ( 10 ) with a moving bed of catalyst;
at least one feed inlet means located above the reaction zone ( 10 );
at least one outlet means for an effluent produced by catalytic reaction, located below the reaction zone ( 10 );
at least one catalyst inlet means ( 7 ) which is capable of introducing catalyst into an upper portion of the reaction zone ( 10 );
at least one catalyst outlet means ( 8 ) opening into a lower portion of the reaction zone ( 10 );
the reactor further comprising, inside the reaction zone ( 10 ):
at least two feed distribution tubes ( 9 ), each feed distribution tube ( 9 ) having a first end ( 11 ) in communication with said at least one feed inlet means and a second closed end ( 12 ), the feed distribution tubes ( 9 ) extending in a substantially vertical manner and being designed to allow feed to pass through the reaction zone ( 10 ) and to retain the catalyst; and
at least two effluent collection tubes ( 13 ), each effluent collection tube ( 13 ) having a first end ( 14 ) communicating with said at least one outlet means and a second closed end ( 15 ), the effluent collection tubes ( 13 ) extending in a substantially vertical manner and being designed to allow effluent to pass through the collection tube ( 13 ) and to retain the catalyst.

2. The reactor according to claim 1 , in which the reactor ( 1 ) is formed by a shell ( 2 ) and said at least one feed inlet means comprises an inlet tube ( 5 ) in communication with an orifice ( 3 ) formed in the shell ( 2 ).

3. The reactor according to claim 1 , in which the reactor ( 1 ) is formed by a shell ( 2 ) and said at least one outlet means comprises an outlet tube ( 6 ) in communication with an orifice ( 4 ) formed in the shell ( 2 ).

4. The reactor according to claim 1 , in which the reactor ( 1 ) is formed by a shell ( 2 ) and in which said at least one catalyst inlet means ( 7 ) and said at least one catalyst outlet means ( 8 ) each comprise at least one tube which is open at its ends and said tube is in communication with an orifice formed in the shell ( 2 ).

5. The reactor according to claim 1 , in which the reactor ( 1 ) is formed by a shell ( 2 ) and comprises an upper first plate ( 16 ) which is secured to the shell ( 2 ) and in which the feed distribution tubes ( 9 ) are supported by the upper first plate ( 16 ) and each of the feed distribution tubes ( 9 ) and said at least one catalyst inlet means ( 7 ) are each in communication with an orifice formed in the upper first plate ( 16 ).

6. The reactor according to claim 5 , in which the upper first plate ( 16 ) is in the shape of a truncated cone.

7. The reactor according to claim 5 , in which the reactor further comprises a lower second plate ( 23 ) which is secured to the shell ( 2 ) and the reaction zone ( 10 ) is defined between the upper first plate and the lower second plate, and in which the effluent collection tubes ( 13 ) are supported by the lower second plate ( 23 ) and each of the effluent collection tubes ( 13 ) and said at least one catalyst outlet means ( 8 ) are each in communication with an orifice formed in the lower second plate ( 23 ).

8. The reactor according to claim 7 , in which the upper first plate ( 16 ) and the lower second plate ( 23 ) respectively obstruct the second ends ( 15 ) of the effluent collection tubes ( 13 ) and the second ends ( 12 ) of the feed distribution tubes ( 9 ).

9. The reactor according to claim 1 , in which said reactor has a vertical axis, and the feed distribution tubes ( 9 ) and the effluent collection ( 13 ) tubes are arranged in a plurality of lines of tubes in a plane perpendicular to the vertical axis of said reactor, in which each line of tubes is constituted by feed distribution tubes or by effluent collection tubes and in which a line constituted by effluent collection tubes ( 13 ) is disposed in a manner adjacent to a line constituted by feed distribution tubes ( 9 ).

10. The reactor according to claim 1 , in which said reactor has a vertical axis, and the feed distribution tubes ( 9 ) and the effluent collection tubes ( 13 ) are arranged in a plurality of lines of tubes in a plane perpendicular to the vertical axis of said reactor, in which each line of tubes comprises, in alternation, a feed distribution tube ( 9 ) and an effluent collection tube ( 13 ).

11. The reactor according to claim 9 , in which the tubes of two adjacent lines are disposed facing each other, forming a square pattern.

12. The reactor according to claim 9 , in which the tubes of two adjacent lines are disposed in a manner which is offset from each other, forming a triangular pattern.

13. The reactor according to claim 1 , in which said reactor has a vertical axis, and the distribution tubes ( 9 ) and collection tubes ( 13 ) are arranged in a plurality of concentric rows of tubes in a plane perpendicular to the vertical axis of said reactor, and in which a row constituted by effluent collection tubes ( 13 ) is disposed in a manner adjacent to a row constituted by feed distribution tubes( 9 ).

14. The reactor according to claim 1 , in which said reactor has a vertical axis, and the feed distribution tubes ( 9 ) and the effluent collection tubes ( 13 ) are arranged in a plurality of concentric rows of tubes in a plane perpendicular to the vertical axis of said reactor, and in which each row of tubes comprises feed distribution tubes ( 9 ) and effluent collection tubes ( 13 ).

15. The reactor according to claim 1 , in which the feed distribution tubes and/or effluent collection tubes ( 9 , 13 ) adjoin the shell ( 2 ) of the reactor.

16. The reactor according to claim 1 , in which the effluent collection tubes ( 13 ) and feed the distribution tubes ( 9 ) are circular, ellipsoidal or lenticular in section or quadrilateral in shape.

Assignees

• Ifp Energies Now

Inventors

• Bazer-Bachi Frederic
• Deleau Fabrice
• Pagot Alexandre

Classifications

• B01J8/12 Primary

  moved by gravity in a downward flow · CPC title

• B01J8/0015

  Feeding of the particles in the reactor; Evacuation of the particles out of the reactor · CPC title

• B01J2208/00761

  Discharging · CPC title

• B01J2208/00752

  Feeding · CPC title

• B01J8/006

  by filtration · CPC title