Process container with cooling elements

• US 7,544,321 B2
• Filed: 05/27/2004
• Issued: 06/09/2009
• Est. Priority Date: 05/27/2003
• Status: Expired due to Fees

• Current Assignee: Berzelius Stolberg GmbH (Quexco, Inc.), Maerz Ofenbau AG (Thyssenkrupp AG)
• Original Assignee: Berzelius Stolberg GmbH (Quexco, Inc.), Maerz Ofenbau AG (Thyssenkrupp AG)
• Inventors: Loebner, Andreas, Pullenberg, Reinhard
• Primary Examiner(s): Kastler; Scott
• Application Number:
  US10/558,356
• Publication Number:
  US 20060285572A1
• Time in Patent Office: 1,839 Days
• Field of Search: 266/193, 266/194, 266/241, 373/76
• US Class Current: 266/241
• CPC Class Codes: F27B 3/16 Walls; Roofs
• CPC Class Codes: F27B 3/24 Cooling arrangements
• CPC Class Codes: F27D 1/12 incorporating cooling arrangements constructions of tube assemblies in general F28
• CPC Class Codes: F27D 2009/0013 the fluid being water
• CPC Class Codes: F27D 2009/0021 with the parallel tube parts close to each other, e.g. a serpentine
• CPC Class Codes: F27D 2009/0027 linked by elements
• CPC Class Codes: F27D 9/00 Cooling of furnaces or of charges therein F27D1/00, F27D3/00 take precedence

Abstract

A process container comprising a metallic casing having at least one refractory cladding layer disposed on the inner side thereof, and cooling elements connected to the outer side of the casing. Each cooling element comprises a base plate and at least one cooling channel connected to the base plate in a heat-conducting manner. The base plate is connected to the outer side of the casing by being screw connected to threaded bolts welded onto the outer side of the casing whereby the base plates nestle against the casing by flexural deformation due to clamping pressure of the screw connections. Ends of the cooling channels are connected to ends of adjacent cooling channels.

Claims

1. A process container comprising:

a metallic casing having outwardly projecting threaded bolts welded onto an outer side thereof;

at least one refractory cladding layer disposed on an inner side of said casing;

cooling elements disposed on and connected to said outer side of said casing, wherein each cooling element comprises a metallic base plate disposed on said outer side of said casing and at least one cooling channel connected to said base plate in a heat-conducting manner, wherein said metallic base plate is configured to change in dimension under thermal stress and conform to dimensional changes of said casing, wherein said base plate is connected to said outer side of said casing by being screw connected to said threaded bolts of said casing such that said base plate of said cooling element nestles against said casing by flexural deformation due to clamping pressure of the screw connections; and

means for connecting ends of one of said cooling channels to ends of an adjacent one of said cooling channels,

wherein said threaded bolts are distributed over an entire surface of a respective cooling element and not only along edges of the cooling element, wherein said threaded bolts extend through bolt holes provided in said base plate, and

wherein said threaded bolts extend along edges of said base plate.

2. A process container according to claim 1, wherein said screw connections are effected in a resilient manner by means of disk springs that are placed on said threaded bolts.

3. A process container according to claim 1, wherein a heat-conductive paste is disposed between said casing and said base plate of said cooling element.

4. A process container according to claim 3, wherein a plurality of filling holes are distributed over said base plate of said cooling element for said heat conductive paste.

5. A process container according to claim 1, wherein each of said cooling elements is provided with a cooling channel that extends over said base plate in a serpentine manner via at least two runs, wherein said cooling channel is in the form of a hollow profile that is open on one side, and wherein edges of said hollow profile of said cooling channel are welded with said base plate.

6. A process container according to claim 1, wherein said means for connecting said ends of said cooling channel include an outwardly directed connector at each of said ends of said cooling channel, and wherein said connectors of adjacent ones of said cooling elements are interconnected by a compensation pipe that is provided with a corrugated tube.

7. A process container according to claim 1, wherein said base plate has a thickness of less than 5 mm.

8. A process container according to claim 1, wherein said base plate is provided with an edge seal along a periphery of said base plate, and wherein a heat-conducting paste is provided between said casing and said base plate.

9. A process container according to claim 8, wherein said edge sea is comprised of a hardening heat conductive paste.