Easy clean catalyst filter basket

Patent metadata

Field	Value
Publication number	US-2017128901-A1
Application number	US-201615347035-A
Country	US
Kind code	A1
Filing date	Nov 9, 2016
Priority date	Nov 9, 2015
Publication date	May 11, 2017
Grant date	—

Abstract

A catalyst filter basket for containing catalyst material within a catalytic chemical reactor. The catalyst filter basket includes a central frame having a base ring and a generally cylindrical inner screen portion which extends upwardly from the base ring. A generally cylindrical outer screen assembly is releasably secured to the central frame by a quick release mechanism.

First claim

1 . A catalyst filter basket for containing catalyst material within a catalytic chemical reactor, the catalyst filter basket comprising:
a central frame having a base ring and a generally cylindrical inner screen portion which extends upwardly from the base ring; a generally cylindrical outer screen assembly radially surrounding the inner screen portion of the central frame, the outer screen assembly being formed of separate screen portions which are assembled to form a complete generally cylindrical outer screen assembly; and at least one of the separate screen portions is secured by a quick release mechanism to another of the at least one separate screen portions and removable from the central frame upon release.

2 . The catalyst filter basket of claim 1 wherein the quick release mechanism comprises a split key connector.

3 . The catalyst filter basket of claim 1 wherein the quick release mechanism comprises a draw bolt which secures opposing bushings on separate screen portions together.

4 . The catalyst filter basket of claim 1 wherein the outer screen assembly is axially secured to the central frame when assembled by a locking groove arrangement wherein a ridge is received within a groove as the outer screen assembly is secured around the central frame.

5 . The catalyst filter basket of claim 2 wherein the split key connector comprises:
a slotted pin which passes through a portion of two of the separate screen portions; and
a split key that passes through a slot in the slotted pin to secure the separate screen portions together.

6 . The catalyst filter basket of claim 1 wherein there are two separate screen portions.

7 . The catalyst filter basket of claim 1 wherein the separate screen portions each comprise:
a peripheral frame; and
a central mesh filtering portion within the frame which is porous to permit fluid to pass through the screen portion.

8 . The catalyst filter basket of claim 1 further comprising a top cover that is releasably secured to the central frame to secure catalyst within a storage area that is defined radially between the inner screen portion and the outer screen assembly.

9 . A catalyst filter basket for containing catalyst material within a catalytic chemical reactor, the catalyst filter basket comprising:
a central frame having a base ring and a generally cylindrical inner screen portion which extends upwardly from the base ring; a generally cylindrical outer screen assembly radially surrounding the inner screen portion of the central frame to define a catalyst storage area radially between the inner screen portion and the outer screen assembly; and the outer screen assembly being secured upon the central frame by a quick release mechanism and removable from the central frame upon release of the quick release mechanism.

10 . The catalyst filter basket of claim 9 wherein the outer screen assembly further comprises:
a plurality of separate screen portions which are assembled to form a complete generally cylindrical outer screen assembly; and
at least one of the separate screen portions is secured by a quick release mechanism to another of the at least one separate screen portions and removable from the central frame upon release.

11 . The catalyst filter basket of claim 10 wherein the quick release mechanism comprises a split key connector having:
a slotted pin which passes through a portion of two of the separate screen portions; and
a split key that passes through a slot in the slotted pin to secure the separate screen portions together.

12 . The catalyst filter basket of claim 10 wherein the quick release mechanism comprises a draw bolt which secures opposing bushings on separate screen portions together.

13 . The catalyst filter basket of claim 9 wherein the outer screen assembly is axially secured to the central frame when assembled by a locking groove arrangement wherein a ridge is received within a groove as the outer screen assembly is secured around the central frame.

14 . The catalyst filter basket of claim 10 wherein there are two separate screen portions.

15 . The catalyst filter basket of claim 9 further comprising a top cover that is releasably secured to the central frame to secure catalyst within the catalyst storage area.

16 . A method of cleaning spent catalyst material from a catalyst filter basket, the method comprising the steps of:
providing a catalyst filter basket having a central frame with a base ring, an inner screen portion extending from the base ring, and an outer screen assembly radially surrounding the inner screen portion to define a catalyst storage area radially between the inner screen portion and the outer screen assembly; removing the outer screen assembly from the central frame to open the catalyst storage area; and cleaning spent catalyst from the catalyst storage area and central frame.

17 . The method of claim 16 wherein:
the outer screen assembly is formed of separate screen portions which are assembled to form a complete generally cylindrical outer screen assembly and at least one of the separate screen portions is secured by a quick release mechanism to another of the at least one separate screen portions and removable from the central frame upon release of the quick release mechanism; and
the step of removing the outer screen assembly from the central frame further comprises releasing the quick release mechanism and removing the separate screen portions.

18 . The method of claim 16 wherein:
the catalyst filter basket further comprises a top cover that is secured to the central frame to enclose the catalyst storage area; and
further comprising the step of removing the top cover from the central frame.

Assignees

• Shell Oil Co

Inventors

• MAAS Edwin
• Kneppers Ruud

Classifications

• B01J2208/00814

  the particulate material being provides in prefilled containers · CPC title

• B01J8/0221

  in a cylindrical shaped bed (B01J8/0214 takes precedence) · CPC title

• B01J8/0085 Primary

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

• B01D29/23

  arranged for outward flow filtration · CPC title

• B01D35/02

  Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks, (B01D35/05 takes precedence; {water pipe system filters E03B3/18, E03B7/07; dirt catchers in sewers E03F; filters or strainers for pipe-lines in general B08B, E03F; object or dirt catching devices in sinks or the like E03C1/26; suction strainers or filters for pumps F04B53/005, F04D29/70}) · CPC title