PRE-APPLIED PROTECTIVE JACKETING CONSTRUCTION FOR PIPE AND BLOCK INSULATION

• US 20080206543A1
• Filed: 11/12/2007
• Published: 08/28/2008
• Est. Priority Date: 02/02/2007
• Status: Active Grant

• Current Assignee: Industrial Insulation Group LLC (Berkshire Hathaway Incorporated)
• Original Assignee: Industrial Insulation Group LLC (Berkshire Hathaway Incorporated)
• Inventors: MacKinnon, Kevin J., Whitaker, Thomas
• Granted Patent: US 8,568,844 B2
• Time in Patent Office: Days
• US Class Current: 428/304.4
• CPC Class Codes: C04B 14/18 Perlite
• CPC Class Codes: C04B 14/42 Glass
• CPC Class Codes: C04B 14/46 Rock wool ; Ceramic or silicate fibres C04B14/40, C04B14/42 take precedence
• CPC Class Codes: C04B 14/4675 from slags
• CPC Class Codes: C04B 2111/00482 Coating or impregnation materials
• CPC Class Codes: C04B 2111/28 Fire resistance, i.e. materials resistant to accidental fires or high temperatures
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 28/26 Silicates of the alkali metals
• CPC Class Codes: F16L 58/04 Coatings characterised by the materials used F16L58/16 takes precedence
• CPC Class Codes: F16L 59/021 comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
• CPC Class Codes: F16L 59/028 Composition or method of fixing a thermally insulating material
• CPC Class Codes: F16L 59/029 layered
• CPC Class Codes: Y10T 428/1372 Randomly noninterengaged or randomly contacting fibers, filaments, particles, or flakes
• CPC Class Codes: Y10T 428/1376 Foam or porous material containing
• CPC Class Codes: Y10T 428/249953 Composite having voids in a component [e.g., porous, cellular, etc.]
• CPC Class Codes: Y10T 442/2164 Coating or impregnation specified as water repellent
• CPC Class Codes: Y10T 442/2213 Coating or impregnation is specified as weather proof, water vapor resistant, or moisture resistant
• CPC Class Codes: Y10T 442/2926 Coated or impregnated inorganic fiber fabric
• CPC Class Codes: Y10T 442/2975 Coated or impregnated ceramic fiber fabric
• CPC Class Codes: Y10T 442/2992 Coated or impregnated glass fiber fabric

Abstract

A protective jacketing-insulation composite structure and method is provided for inhibiting the corrosion of a pipeline. The method includes forming a porous-insulation into an elongated-arcuate-shape, applying a sodium silicate solution layer to the insulation and at least partially within the pores thereof, permitting the sodium silicate solution layer to set to a threshold amount, adhering an outer facing to the sodium silicate solution layer after the permitting step is accomplished, installing the insulation and facing to the outer surface of a pipeline, and sealing any exposed edges or seams that may exist between multiple installed products. A structure such as made from this method can have a release layer and contact adhesive.

Claims

1. A method for inhibiting pipe corrosion, the method comprising the steps of:

(a) forming a porous insulation into an elongated-arcuate-shape,

(b) applying a copolymer-sodium silicate solution layer to at least the exterior surface of the insulation and at least partially within the pores of the insulation,

(c) permitting the copolymer-sodium silicate solution layer to set to a threshold amount,

(d) adhering an outer protective jacketing to the copolymer-sodium silicate solution layer, after the permitting step is accomplished,

(e) installing the product made in steps (a)-(d) onto the exterior surface of a pipe or piece of equipment, and

(f) sealing any exposed edges or seams between adjacent products installed in step (e) or between overlapping sheets of said protective jacketing.

2. The method of claim 1, wherein the insulation is comprised of calcium silicate, mineral fiber, rock mineral wool, slag mineral wool, perlite, fiber glass, or a combination thereof.

3. The method of claim 1, wherein the adhering step comprises adhering a continuous outer protective jacketing to the copolymer-sodium silicate solution layer without any intervening layer.

4. The method of claim 1, wherein the forming step comprises forming first and second elongated arcuate-shaped insulation members which are combinable so as to define a tube.

5. The method of claim 3, wherein the first and second elongated insulation members are at least partially interconnected by an outer protective jacketing.

6. The method of claim 3, including the additional step of bonding the first and second elongated insulation members to one another along an interface.

7. The method of claim 6, wherein the first and second elongated insulation members have respective first and second edges, and wherein the bonding step bonds the respective first and second edges to one another.

8. The method of claim 6, wherein the bonding step comprises bonding the respective first and second edges with a glue comprised of a copolymer-sodium silicate solution.

9. The method of claim 1, wherein the applying step comprises brushing the copolymer-sodium silicate solution onto the insulation.

10. The method of claim 1, wherein the applying step comprises spraying the copolymer-sodium silicate solution onto the insulation at a low pressure.

11. The method of claim 5, wherein the protective jacketing comprises a multilayer laminate of foils, plastic film, and optionally fiberglass cloth.

12. A method for inhibiting pipe corrosion, the method comprising the steps of:

(a) disposing a porous-insulation around the pipe;

(b) applying a copolymer-sodium silicate solution layer to the insulation and at least partially within the pores of the insulation, as a coating,; and

(c) adhering an outer protective jacketing to the copolymer-sodium silicate solution layer while the applied sodium silicate solution layer remains tacky.

13. The method of claim 12, wherein the disposing step comprises surrounding the pipe with first and second elongated arcuate-shaped insulation members.

14. A composite structure for an outer surface of a pipe, comprising:

(a) an insulation being made of a porous material, and having an elongated-arcuate-shape having an interior surface sized to complement the outer surface of the pipe, and an exterior surface;

(b) a copolymer-sodium silicate layer, on the exterior surface in bonding contact to the layer, and within the pores of the insulation; and

(c) an outer protective jacketing joined to the copolymer-sodium silicate layer so as to define an integral composite structure.

15. The composite structure of claim 14, wherein the porous-insulation is comprised of calcium silicate, mineral fiber, rock mineral wool, slag mineral wool, perlite, fiber glass, or a combination thereof.

16. The composite structure of claim 14, wherein the copolymer-sodium silicate solution layer is disposed directly upon the exterior surface of the insulation free of any intervening layer.

17. The composite structure of claim 14 wherein the copolymer-sodium silicate solution layer bonded to the outer insulation surface is comprised of 7.5%-15% sodium silicate and an elastomeric copolymer.

18. The composite structure of claim 14 wherein the outer protective jacketing is comprised of a laminate of metal foil, plastic film, and optionally fiberglass cloth.

19. The composite structure of claim 14, wherein the sodium silicate solution has a viscosity ranging from about 57 cP to about 80,000 cP.

20. The composite structure of claim 14, wherein the copolymer-sodium silicate solution has a viscosity sufficient to extend within the pores of the insulation.

21. A kit for the construction of an insulation-protective jacketing composite structure comprising

(a) first and second elongated arcuate-shaped insulation members each having a porous exterior,

(b) a copolymer-sodium silicate layer disposed on at least the exterior surface of the insulation members and within pores thereof,

(c) a protective jacketing for installation around the insulation members,

(d) a release layer of pressure sensitive adhesive that operates to join the two insulation members, and

(e) contact adhesive to seal any cracks or edges between installed protective jacketings.