Compact reactor

• US 7,022,294 B2
• Filed: 01/25/2001
• Issued: 04/04/2006
• Est. Priority Date: 01/25/2000
• Status: Expired due to Fees

• Current Assignee: Meggitt PLC
• Original Assignee: Meggitt PLC
• Inventors: Johnston, Anthony
• Primary Examiner(s): Stoner, Kiley S.
• Assistant Examiner(s): Tran, Len
• Application Number:
  US09/769,561
• Publication Number:
  US 20010021359A1
• Time in Patent Office: 1,895 Days
• Field of Search: 422/198, 422/191, 422/193, 422/188, 422/189, 422/200
• US Class Current: 422/198
• CPC Class Codes: B01J 2208/0015 Plates; Cylinders
• CPC Class Codes: B01J 2208/00212 Plates; Jackets; Cylinders
• CPC Class Codes: B01J 2208/00221 comprising baffles for guiding the flow of the heat exchange medium
• CPC Class Codes: B01J 2219/00085 Plates; Jackets; Cylinders
• CPC Class Codes: B01J 2219/182 horizontal
• CPC Class Codes: B01J 8/0221 in a cylindrical shaped bed B01J8/0214 takes precedence
• CPC Class Codes: B01J 8/0235 in a spiral shaped bed
• CPC Class Codes: B01J 8/0285 Heating or cooling the reactor for tubular reactors in furnaces B01J8/062
• CPC Class Codes: B01J 8/0292 with stationary packing material in the bed, e.g. bricks, wire rings, baffles
• CPC Class Codes: B01J 8/0438 the beds being placed next to each other
• CPC Class Codes: B01J 8/0496 Heating or cooling the reactor
• CPC Class Codes: C01C 1/0417 characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor arrangement of several reactors C01C1/0405; fixed-bed reactors in general B01J8/02
• CPC Class Codes: F28D 9/04 the conduits being formed by spirally-wound plates or laminae
• CPC Class Codes: F28F 2260/00 Heat exchangers or heat exchange elements having special size, e.g. microstructures microheat pipes F28D2015/0225; nanostructures F28F2255/20
• CPC Class Codes: F28F 3/048 in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
• CPC Class Codes: Y02P 20/52 using catalysts, e.g. selective catalysts

Abstract

A reactor comprises a plurality of reaction zones divided by heat exchanger panels but in fluid communication via the panels, the reaction zones being arranged in a spiral configuration whereby the reaction zones form a flow path for reactants that extends between a central part of the reactor and an outer peripheral part thereof.

Claims

1. A reactor comprising:

(a) an outer wall;

(b) a plurality of heat exchanger panels arranged within the outer wall at an angle thereto such as to extend inwardly to an interior of the reactor, wherein each of the heat exchanger panels comprises a printed circuit heat exchange (PCHE) plate;

(c) a plurality of reaction zones separated by the heat exchanger panels but in fluid communication with one another via the heat exchanger panels, and forming thereby a segmented production flow path; and

(d) baffles located within each reaction zone, wherein each of the baffles extends from a heat exchanger surface of an associated one of the heat exchanger panels to define a boundary for the associated reaction zone and to cause the production flow path to extend between a central part of the reactor to an outer peripheral part thereof.

2. A reactor according to claim 1, wherein the configuration of the production flow path is that of a spiral.

3. A reactor according to claim 1, further comprising two concentric catalyst containment screens, between which a reaction zone is contained.

4. A reactor according to claim 1, wherein the outer wall is curved, the reactor is cylindrically shaped, and the heat exchanger panels are arranged about a central point to thereby define a plurality of sectors each containing at least one reaction zone.

5. A reactor according to claim 4, wherein each sector is divided into a plurality of reaction zones by the baffles.

6. A reactor according to claim 5, wherein each of the baffles is arranged to extend from a heat exchanger surface to define a boundary for an associated reaction zone.

7. A reactor according to claim 5, wherein the baffles are curved.

8. A reactor according to claim 5, wherein the baffles are straight.

9. A reactor according to claim 5, wherein the baffles are corrugated.

10. A reactor according to claim 4, wherein the heat exchanger panels are arranged radially about a longitudinal axis of the reactor.

11. A reactor according to claim 1, wherein the reaction zones comprise catalyst beds.

12. A reactor according to claim 1, wherein the configuration the production flow path is substantially that of a spiral.

13. A reactor according to claim 1, further comprising two catalyst containment screens, between which a reaction zone is contained.

14. A reactor according to claim 1, wherein

the outer wall comprises a containment shell;

the plurality of heat exchanger panels are spaced circumferentially around a longitudinal axis of the containment shell so as to form reaction zones therebetween;

a plurality of catalyst beds are disposed within the reaction zones;

and the baffles comprise a plurality of baffles that are located in the containment shell to form at least one flow path in the catalyst beds, wherein the flow path contains a plurality of segments that are bounded by the panels and that are connected with one another via passageways in the panels, and wherein additional passageways are formed in the panels for the passage of a heat exchange medium therethrough.

15. A reactor according to claim 14, wherein

the containment shell is at least essentially cylindrical in shape,

each of the panels extends at least generally radially with respect to the longitudinal axis,

the baffles are arranged relative to one another and to the panels to cause the flow paths to be at least generally spiral-shaped.

16. A reactor according to claim 15, wherein the baffles are curved.

17. A reactor according to claim 15, wherein the baffles are straight.

18. A reactor according to claim 14, wherein each of the additional passageways has an inlet in fluid communication with a source of the heat exchange medium and an outlet.

19. A reactor according to claim 18, wherein the additional passageways open into an inlet of the flow path, thereby permitting feed reactants to be used as the heat exchange medium.

20. A reactor according to claim 14, wherein a first manifold communicates with the inlets of the additional passageways and a second manifold communicates with the outlets of the additional passageways, one of the first and second manifolds surrounding the catalyst beds and the other of the first and second manifolds being surrounded by the catalyst beds.