Insulation blanket having a deposited passivator for industrial insulation applications

Patent metadata

Field	Value
Publication number	US-11187367-B2
Application number	US-201916405461-A
Country	US
Kind code	B2
Filing date	May 7, 2019
Priority date	May 7, 2019
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

A passivating flexible insulation blanket positionable about a pipe includes an insulation core, an enclosing fabric, and a non-consumable passivator. The insulation core is substantially hydrophobic and includes a microporous material. The enclosing fabric fully encapsulates the insulation core to form a capsule or pouch about the insulation core. The non-consumable passivator is non-consumable such that there is no appreciable change to a mass of the non-consumable passivator after an extended time of activation. The non-consumable passivator is deposited into the insulation core and has a composition soluble in water. The non-consumable passivator includes a leachable component that leaches from the insulation core and is capable of neutralizing acidic components. The leachable component is water soluble and is capable of reacting with a surface of the pipe to form a protective coating on the pipe to aid in inhibiting corrosion formation on the surface of the pipe.

First claim

What is claimed is:

1. A passivating flexible insulation blanket positionable about a pipe, wherein the insulation blanket comprises:
an insulation core that is substantially hydrophobic, wherein the insulation core comprises a microporous material;
an enclosing fabric, wherein the enclosing fabric fully encapsulates the insulation core to form a capsule or pouch about the insulation core to form a barrier between the insulation core and an surface environment exterior to the enclosing fabric; and
a non-consumable passivator having a composition soluble in water deposited in the insulation core, wherein the non-consumable passivator is non-consumable such that there is no appreciable change to a mass of the non-consumable passivator after an extended time of activation, and wherein the non-consumable passivator comprises a leachable component that leaches from the insulation core to the surface environment exterior to the enclosing fabric, wherein the leachable component is inorganic and capable of neutralizing acidic components when the leachable component and acidic components come in contact with each other, and wherein the leachable component is water soluble and capable of reacting with a surface of the pipe to form a protective coating on the pipe that aids in inhibiting corrosion formation on the surface of the pipe.

2. The passivating flexible insulation blanket of claim 1 , wherein the leachable component comprises one or more alkaline components.

3. The passivating flexible insulation blanket of claim 1 , wherein the leachable component compromises high solubility silicate ions.

4. The passivating flexible insulation blanket of claim 1 , wherein the leachable component acts as a pH buffer when exposed to the surface environment exterior to the enclosing fabric.

5. The passivating flexible insulation blanket of claim 1 , wherein the non-consumable passivator comprises at least one high solubility silicate and a carrier, wherein the carrier comprises low solubility silicate ions and metal oxides.

6. The passivating flexible insulation blanket of claim 1 , wherein the leachable component promotes magnetite formation on the surface of the pipe when exposed to the surface environment exterior to the enclosing fabric.

7. The passivating flexible insulation blanket of claim 1 , wherein the insulation core is configured for high temperature applications, wherein high temperature applications include temperatures ranging from 150° F. to 1200° F.

8. The passivating flexible insulation blanket of claim 1 , wherein the insulation core is encapsulated between two enclosing fabrics stitched together to fully encapsulate the insulation core.

9. The passivating flexible insulation blanket of claim 1 , wherein the enclosing fabric is a glass fiber blanket.

10. The passivating flexible insulation blanket of claim 1 , wherein the passivating flexible insulation blanket further comprises fibers to add integral strength.

11. The passivating flexible insulation blanket of claim 1 , wherein the passivating flexible insulation blanket further comprises a opacifier to slow radiant heat passing through the passivating flexible insulation blanket.

12. A method of manufacturing a passivating insulation blanket positionable about a pipe, wherein the method comprises:
providing an insulation material, wherein the insulation material is substantially hydrophobic; and
depositing a non-consumable passivator into the insulation material, wherein the non-consumable passivator is non-consumable such that there is no appreciable change to a mass of the non-consumable passivator after an extended time of activation, wherein the non-consumable passivator comprises a leachable component that is capable of leaching from the insulation material when activated, wherein the leachable component comprises inorganic material capable of neutralizing acidic components when the leachable component and acidic components come in contact with each other, and wherein the leachable component is water soluble and capable of reacting with a surface of the pipe to form a protective coating on the pipe that aids in inhibiting corrosion formation on the surface of the pipe; and
forming the insulation material having the non-consumable passivator deposited into the insulation material into the passivating insulation blanket.

13. The method of manufacturing a passivating insulation blanket of claim 12 , wherein forming the insulation material comprises solidifying the insulation material having the non-consumable passivator deposited into the insulation material to form the passivating insulation blanket.

14. The method of manufacturing a passivating insulation blanket of claim 12 , wherein the non-consumable passivator deposited into the insulation material is 10 percent by weight.

15. The method of manufacturing a passivating insulation blanket of claim 12 , wherein the leachable component comprises one or more alkaline components.

16. The method of manufacturing a passivating insulation blanket of claim 12 , wherein the non-consumable passivator comprises high solubility silicate ions and a carrier.

17. The method of manufacturing a passivating insulation blanket of claim 12 , wherein the insulation material comprises an insulation core, and wherein the insulation core is fully encapsulated by an enclosing fabric to form a capsule or pouch about the insulation core to form a barrier between the insulation core and an environment.

18. The method of manufacturing a passivating insulation blanket of claim 12 , wherein the passivating insulation blanket comprises a preformed insulation segment.

19. The method of manufacturing a passivating insulation blanket of claim 18 , wherein the preformed insulation segment comprises mineral wool.

20. A passivating insulation blanket positionable about an object, wherein the passivating insulation blanket comprises:
an insulation segment, wherein the insulation segment comprises an insulation material; and
a passivator deposited within the insulation segment, wherein:
the passivator comprises a leachable component that leaches from the insulation segment to an surface environment exterior to the insulation segment;
the leachable component is capable of neutralizing acidic components when the leachable component and acidic components come into contact with each other;
the leachable component is water soluble and capable of forming a protective coating about a metal surface of the object that aids in inhibiting corrosion formation on the metal surface; and
the passivator deposited within the insulation segment is non-consumable such that there is no appreciable change to a mass of the passivator after an extended time of activation.

21. The passivating insulation blanket of claim 20 , wherein the object that the passivating insulation blanket is positionable about is a pipe or a vessel.

22. The passivating insulation blanket of claim 20 , wherein the insulation material is hydrophobic for resisting moisture intrusion into the insulation segment.

23. The passivating insulation blanket of claim 20 , wherein the insulation material comprises entangled fibers set in a preformed arrangement.

24. The passivating insulation blanket of claim 23 , wherein the insulation material comprises entangled fibers set in a preformed arrangement comprises mineral wool.

25. The passivating insulation blanket of claim 20 , wherein the leachable compon

Assignees

• Johns Manville

Inventors

• Kulprathipanja Ames
• Jones Marybeth

Classifications

• B32B2266/04

  Inorganic · CPC title

• B32B7/027

  Thermal properties · CPC title

• B32B2260/04

  Impregnation, embedding, or binder material · CPC title

• B32B2266/0278

  Polyurethane · CPC title

• B32B7/09

  by stitching, needling or sewing (by {mechanically connecting} fibrous layers {to another layer} B32B5/06) · CPC title