Tubular Reactor With Packing

• US 20070299148A1
• Filed: 11/11/2005
• Published: 12/27/2007
• Est. Priority Date: 11/12/2004
• Status: Abandoned Application

• Current Assignee: Shell Oil Company (Shell Plc)
• Original Assignee: Shell Oil Company (Shell Plc)
• Inventors: Verbist, Guy Lode
• Application Number:
  US11/667,501
• Publication Number:
  US 20070299148A1
• Time in Patent Office: Days
• US Class Current: 518/712
• CPC Class Codes: B01J 19/30 Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
• CPC Class Codes: B01J 2219/30238 Tetrahedron
• CPC Class Codes: B01J 2219/30242 Star
• CPC Class Codes: B01J 2219/30246 Square or square-derived
• CPC Class Codes: B01J 2219/30269 Brush
• CPC Class Codes: B01J 2219/30273 Cross
• CPC Class Codes: B01J 2219/30408 Metal
• CPC Class Codes: B01J 2219/30416 Ceramic
• CPC Class Codes: B01J 2219/30475 comprising catalytically active material
• CPC Class Codes: B01J 23/84 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• CPC Class Codes: B01J 23/8913 Cobalt and noble metals
• CPC Class Codes: B01J 35/40 characterised by dimensions, e.g. grain size in a colloidal state B01J35/23; crystallite size B01J35/77
• CPC Class Codes: B01J 8/067 Heating or cooling the reactor B01J8/062 takes precedence
• CPC Class Codes: C10G 2/331 containing group VIII-metals
• CPC Class Codes: C10G 2/341 with stationary catalyst bed

Abstract

A multitubular fixed bed reactor suitable for carrying out a catalytic process is described. There actor includes a plurality of reactor tubes, one or more of which include a fixed bed of catalyst and is/are at least partially surrounded by a heat transfer medium, preferably a cooling medium, wherein the one or more reactor tubes include at least one insert, especially a heat transfer insert and/or a pressure drop decreasing insert. Preferably the tubes are elongate, and preferably the inserts are elongate. The inserts may not extend the full length of their respective tube or tubes. The inserts may extend partly, substantially or wholly along the length of the relevant tube(s). All the tubes of the reactor may include a heat transfer and insert. Most preferably, the insert of the present invention reduces temperature differentials in a reactor tube and decrease the pressure drop over the reactor tube, so as to minimise even temperature differences, and thus optimise reaction conditions and catalytic activity within the reactor tube.

Claims

1. A multitubular fixed bed reactor suitable for carrying out a catalytic process, which reactor includes a plurality of reactor tubes, one or more of which include a fixed bed of catalyst and is/are at least partially surrounded by a heat transfer medium, wherein the one or more reactor tubes each include at least one insert.

2. A reactor as claimed in claim 1 wherein the reactor tubes are elongate, and wherein the inserts are elongate.

3. A reactor as claimed in claim 1 wherein the inserts extend partly along the length of the reactor tubes.

4. A reactor as claimed in claim 1 wherein the inserts have a geometric cross-sectional shape, design or pattern.

5. A reactor as claimed in claim 1 wherein the inserts comprise radial fins extending at least partially perpendicularly to the direction of the reactor tube.

6. A reactor as claimed in claim 1 wherein the inserts have a central axis.

7. A reactor as claimed in claim 1 wherein the inserts are separate from each reactor tube.

8. A reactor as claimed in claim 1 wherein the inserts are formed from one or more of the group consisting of metals, and their alloys, metal-plated materials, and ceramic alloys.

10. A reactor as claimed in claim 1 wherein one or more inserts are adapted to divide the tube to form a number of defined tube portions.

13. A reactor as claimed in claim 1 wherein the inserts extend substantially along the length of the reactor tubes.

14. A reactor as claimed in claim 1 wherein the inserts extend beyond the length of the reactor tubes.

15. A reactor as claimed in claim 1 wherein the inserts are removable from the reactor tubes.

16. A reactor as claimed in claim 1 wherein the inserts include one or more apertures.

17. A reactor as claimed in claim 1 wherein the inserts are porous.

18. A reactor as claimed in claim 1 wherein the inserts comprise a ceramic, sintered or metal foam.

9. (canceled)

11. A reactor tube for use in a multitubular reactor suitable for carrying our a catalytic process, wherein the reactor tube includes one or more inserts.

12. A process for the synthesis of hydrocarbons comprising the step of introducing synthesis gas into a multitubular reactor having a plurality of tubes in which the reactants are in contact with one or more catalysts, and one or more of the tubes is/are surrounded by at least one heat transfer medium, wherein at least one of the reactor tubes includes an insert.