Removable basket for catalytic reactor

Patent metadata

Field	Value
Publication number	US-10610844-B2
Application number	US-201816164377-A
Country	US
Kind code	B2
Filing date	Oct 18, 2018
Priority date	Oct 18, 2017
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

The present invention relates to a removable basket for a catalytic reactor comprising a horizontal base (1) and a plurality of vertical side walls (2) and/or at least one ellipsoidal side wall, and a plurality of vertical chimneys (3, 4) that are open at their lower (5) and upper (6) ends, each chimney comprising a lower part (7) comprising the lower end fastened to the base and extending between the side walls, in which a first chimney comprises an upper part (8) extending above the side walls, and the upper part of the first chimney is suitable for being inserted into a lower part of a chimney of another removable basket. The present invention also relates to a filtration and distribution device comprising said removable basket, a reactor comprising said device, and a hydrotreating and/or hydrocracking process using said reactor.

First claim

The invention claimed is:

1. A removable basket suitable for containing and holding at least one filtration medium (M) for filtration and distribution of a gaseous phase and a liquid phase, and which can be suitable for being arranged upstream of a fixed catalyst bed ( 19 ) of a reactor ( 17 ) operating with a co-current gas-liquid downflow, said removable basket comprising:
a substantially horizontal base ( 1 ) and a plurality of substantially vertical side walls ( 2 ) and/or at least one ellipsoidal side wall ( 2 ), the base ( 1 ) and/or at least one side wall ( 2 ) being permeable to gas and liquid; and
a plurality of chimneys ( 3 , 4 ) that are substantially vertical and open at their lower ( 5 ) and upper ( 6 ) ends, each chimney comprising a lower part ( 7 ) comprising the lower end ( 5 ) fastened to the base ( 1 ) and extending between the side walls ( 2 ),

in which
a first chimney ( 3 ) of the removable basket comprises an upper part ( 8 ) extending above the side walls ( 2 ),
the upper part ( 8 ) of the first chimney ( 3 ) is suitable for being inserted into a lower part ( 7 ) of a chimney of another removable basket of the same type, and
said upper part ( 8 ) of the first chimney ( 3 ) having a height (h 1 ) that is smaller than or equal to a height (H 2 ) of the lower part ( 7 ) of a second chimney ( 4 ) of the removable basket.

2. The removable basket according to claim 1 , in which the chimneys ( 3 , 4 ) form tubes having a circular cross section, and the diameter (D 2 ) of the lower part ( 7 ) of a second chimney ( 4 ) of the removable basket is greater than the diameter (d 1 ) of the upper part ( 8 ) of the first chimney ( 3 ).

3. The removable basket according to claim 1 , also comprising a second chimney ( 4 ) comprising an upper part ( 8 ) extending above the side walls ( 2 ), and in which the upper part ( 8 ) of the second chimney ( 4 ) is suitable for being inserted into a lower part ( 7 ) of a chimney of another removable basket.

4. The removable basket according to claim 3 , in which the second chimney ( 4 ) has a height (h 2 ) of the upper part ( 8 ) smaller than or equal to the height (H 1 ) of the lower part ( 7 ) of the first chimney ( 3 ).

5. The removable basket according to claim 3 , in which the chimneys ( 3 , 4 ) form tubes having a circular cross section, and in which the diameter (D 1 ) of the lower part ( 7 ) of the first chimney ( 3 ) is greater than the diameter (d 2 ) of the upper part ( 8 ) of the second chimney ( 4 ).

6. The removable basket according to claim 1 , comprising four substantially vertical side walls ( 2 ), in which two first opposite side walls ( 2 ) have a width (L) substantially equal to twice the width (l) of two other side walls ( 2 ) in order to form a rectangular parallelepiped comprising a cavity consisting of two adjacent square-based rectangular parallelepipeds, each of first and second chimneys ( 3 , 4 ) being arranged at the center of one of the square-based rectangular parallelepipeds.

7. The removable basket according to claim 1 , in which at least one of the upper ends ( 6 ) of the plurality of chimneys ( 3 , 4 ) of the removable basket comprises a screen ( 10 ).

8. The removable basket according to claim 1 , in which the base ( 1 ) and/or the side walls ( 2 ) comprise a peripheral reinforcement ( 11 ).

9. The removable basket according to claim 1 , also comprising at least one reinforcement ( 13 ) suitable for stiffening the removable basket.

10. The removable basket according to claim 1 , also comprising a perforated protective screen ( 9 ), suitable for being arranged above an upper layer of filtration medium (M).

11. The removable basket according to claim 1 , also comprising a connecting element ( 14 ) for connecting a side wall ( 2 ) of the removable basket to a side wall ( 2 ) of an adjacent removable basket.

12. A device performing filtration and distribution of a gaseous phase and a liquid phase, suitable for being arranged upstream of a fixed catalyst bed ( 19 ) of a reactor ( 17 ) operating with co-current gas-liquid downflow, comprising:
a perforated tray ( 16 ) extending in a horizontal plane on which are fastened distributors ( 15 ) that are substantially vertical and open at their upper ( 21 ) and lower ( 22 ) ends, said distributors ( 15 ) being equipped with openings ( 23 ) over at least a fraction of their height; and
a plurality of removable baskets according to claim 1 arranged on the distributors ( 15 ).

13. A reactor ( 17 ) suitable for operating with co-current gas-liquid downflow comprising in the direction of flow of fluids:
a fixed catalyst bed ( 19 ); and
a device performing filtration and distribution of a gaseous phase and a liquid phase according to claim 12 arranged upstream of the catalyst bed ( 19 ).

14. A process comprising hydrotreating and/or hydrocracking of a hydrocarbon-containing feedstock containing at least one hydrocarbon fraction having a sulphur content of at least 0.5% by weight with respect to the total weight of the hydrocarbon-containing feedstock, and/or an initial boiling temperature of at least 300° C., and/or a final boiling temperature of at least 500° C., in which the feedstock is introduced into a reactor according to claim 13 .

Assignees

• Ifp Energies Now

Inventors

• Weiss Wilfried
• Plais Cecile

Classifications

• B01J8/0292

  with stationary packing material in the bed, e.g. bricks, wire rings, baffles · CPC title

• B01J8/0085 Primary

  promoting uninterrupted fluid flow, e.g. by filtering out particles in front of the catalyst layer · CPC title

• B01J8/0242

  the fluid flow within the bed being predominantly vertical · CPC title

• B01J2208/023

  Details · CPC title

• C10G2300/1044

  Heavy gasoline or naphtha having a boiling range of about 100 - 180 °C · CPC title