Method and apparatus for joining together modular candle filters

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 the open end of the second filter portion; and

applying an 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 thereby forming the modular candle filter.

22. The method of claim 21 , wherein the second filter portion comprises a flange adhered at a second open end thereof opposite the open end, wherein the flange comprises mullite, silicon carbide, zirconia, alumina, and/or alumina-titania.

23. The method of claim 22 , further comprising:

removing the clamp;

lowering the modular candle filter through the opening in the cell plate and suspending the modular candle filter using the flange; and

securing the flange to the cell plate.

24. The method of claim 21 , 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.

25. The method of claim 21 , wherein the second filter portion comprises an integrally formed flange at a second open end thereof opposite the open end.

26. The method of claim 21 , wherein the clamp comprises a protective sleeve shaped to accommodate the first filter portion therein; and

and wherein the protective sleeve comprises plastic or rubber.

27. The method of claim 26 , wherein an inner surface of the protective sleeve comprises a ridge or a taper.