Method and apparatus for joining together modular candle filters

Patent metadata

Field	Value
Publication number	US-11229865-B2
Application number	US-202117326582-A
Country	US
Kind code	B2
Filing date	May 21, 2021
Priority date	May 22, 2020
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A system for forming a hollow modular candle filter includes: a first filter portion having at least one open end; a hollow second filter portion having at least one open end; a sleeve configured to fit within the open end of the first filter portion and the open end of the second filter portion; and an adhesive configured to bind the sleeve to each of the first filter portion and the second filter portion.

First claim

What is claimed is:

1. A system for forming a modular candle filter, the system comprising:
a hollow first filter portion having an open end;
a hollow second filter portion having an open end;
a sleeve configured to fit within the open end of the first filter portion and the open end of the second filter portion; and
an adhesive configured to bind the sleeve to each of the first filter portion and the second filter portion;
wherein the adhesive comprises:
a liquid binder;
a reactive filler, the reactive filler being reactive with the liquid binder only at temperatures above 250° C.;
a non-reactive filler, the non-reactive filler not being reactive with the liquid binder; and
a setting component, the setting component being reactive with the liquid binder at ambient temperature.

2. The system of claim 1 , wherein the liquid binder comprises a phosphate-containing acidic component, the reactive filler comprises alumina, the non-reactive filler comprises silica, and the setting component comprises an alkaline earth metal oxide.

3. The system of claim 1 , wherein a length of the sleeve is between 1% and 5% of a combined length of the first filter portion and the second filter portion.

4. The system of claim 1 , wherein an inner diameter of the open end of the first filter portion is equal to an inner diameter of the open end of the second filter portion; and
wherein an outer diameter of the sleeve is 1-8 mm less than the inner diameter of the open end of the first filter portion.

5. The system of claim 1 , further comprising a flange adhered to the first filter portion or the second filter portion, wherein the flange comprises mullite, silicon carbide, zirconia, alumina, and/or alumina-titania.

6. A method of forming a modular candle filter, comprising:
supplying a hollow first filter portion having an open end;
supplying a hollow second filter portion having an open end;
supplying a sleeve configured to fit within the open end of the first filter portion and the open end of the second filter portion;
applying an adhesive to at least one of the sleeve and the first filter portion and inserting the sleeve into the open end of the first filter portion; and
applying the adhesive to at least one of the sleeve and the second filter portion and inserting the sleeve into the open end of the second filter portion;
wherein the adhesive comprises:
a liquid binder;
a reactive filler, the reactive filler being reactive with the liquid binder only at temperatures above 250° C.;
a non-reactive filler, the non-reactive filler not being reactive with the liquid binder; and
a setting component, the setting component being reactive with the liquid binder at ambient temperature.

7. The method of claim 6 , wherein applying the adhesive to at least one of the sleeve and the first filter portion comprises applying a wet mixture comprising the liquid binder, the reactive filler, and the non-reactive filler to one of the sleeve and the first filter portion, applying the setting component to the other of the sleeve and the first filter portion, and inserting the sleeve into the open end of the first filter portion; and
wherein applying the adhesive to at least one of the sleeve and the second filter portion comprises applying the wet mixture to one of the sleeve and the second filter portion, applying the setting component to the other of the sleeve and the second filter portion, and inserting the sleeve into the open end of the second filter portion;
wherein, the wet mixture and the setting component are configured to react and adhere the sleeve to the each of the first filter portion and the second filter portion.

8. The method according to claim 7 , wherein the liquid binder comprises a phosphate-containing acidic component, the reactive filler comprises alumina, the non-reactive filler comprises silica, and the setting component comprises an alkaline earth metal oxide.

9. The method according to claim 7 , wherein the setting component is applied to an interior surface proximate the open end of the first filter portion and an interior surface proximate the open end of the second filter portion.

10. The method according to claim 9 , wherein the wet mixture is applied to an entire outer surface of the sleeve.

11. The method according to claim 7 , wherein a length of the sleeve is between 1% and 5% of a combined length of the first filter portion and the second filter portion.

12. The method of claim 6 , further comprising:
adhering a flange to the hollow first filter portion or the hollow second filter portion at the open end thereof.

13. The method of claim 12 , wherein the flange comprises mullite, silicon carbide, zirconia, alumina, and/or alumina-titania.

14. The method of claim 12 , wherein the adhering utilizes the adhesive.

15. A kit, comprising:
a hollow first filter portion having an open end;
a hollow second filter portion having an open end, wherein the second filter portion has a setting component applied to an interior surface proximate the open end;
a sleeve positioned within the open end of the first filter portion and adhered to the first filter portion, wherein at least a portion of the sleeve extends from the first filter portion and is configured to fit within the open end of the second filter portion; and
a wet mixture configured to react with the setting component and adhere the sleeve to the second filter portion.

16. The kit according to claim 15 , wherein the wet mixture comprises:
a liquid binder;
a reactive filler, the reactive filler being reactive with the liquid binder only at temperatures above 250° C.; and
a non-reactive filler, the non-reactive filler not being reactive with the liquid binder; and
wherein the setting component is reactive with the liquid binder at ambient temperature.

17. The kit according to claim 16 , wherein the liquid binder comprises a phosphate-containing acidic component, the reactive filler comprises alumina, the non-reactive filler comprises silica, and the setting component comprises an alkaline earth metal oxide.

18. The kit according to claim 15 , wherein a length of the sleeve is between 1% and 5% of a combined length of the first filter portion and the second filter portion.

19. The kit according to claim 15 , further comprising a clamp configured to be removably attached to an outer surface of the hollow first filter portion or the hollow second filter portion.

20. The kit according to claim 15 , further comprising a flange adhered to the hollow first filter portion or the hollow second filter portion at the open end thereof, wherein the flange comprises mullite, silicon carbide, zirconia, alumina, and/or alumina-titania.

21. A method of installing a modular candle filter in a bag house, comprising:
inserting a lower portion of a hollow first filter portion into an opening of a cell plate of the bag house, wherein the first filter portion has an open end opposite the lower portion and wherein a sleeve is adhered to an inner surface of the first filter portion proximate the open end such that the sleeve protrudes from the open end;
securing a clamp to an outer surface of the first filter portion proximate the open end above the cell plate, wherein the clamp has a diameter that is greater than a diameter of the opening of the cell plate;
suspending the first filter portion on the cell plate using the clamp;
supplying a hollow second filter portion having an open end, wherein the sleeve is configured to fit within th

Assignees

• Unifrax I Llc
• Unifrax 1 Llc

Inventors

• Decker Jens

Classifications

• C09J1/00

  Adhesives based on inorganic constituents · CPC title

• C04B2111/00637

  as glue or binder for uniting building or structural materials · CPC title

• C04B28/342

  the phosphate binder being present in the starting composition as a mixture of free acid and one or more reactive oxides · CPC title

• C04B14/303

  Alumina · CPC title

• C04B14/06

  Quartz; Sand · CPC title