SYSTEM AND METHOD FOR BRIQUETTING CYCLONE DUST FROM DECOATING SYSTEMS

• US 20180340240A1
• Filed: 05/25/2018
• Published: 11/29/2018
• Est. Priority Date: 05/26/2017
• Status: Abandoned Application

• Current Assignee: Novelis Incorporated (Hindalco Industries Limited)
• Original Assignee: Novelis Incorporated (Hindalco Industries Limited)
• Inventors: Doutre, Don, Sweeney, Allan
• Application Number:
  US15/989,992
• Publication Number:
  US 20180340240A1
• Time in Patent Office: Days
• CPC Class Codes: B01D 45/16 generated by the winding course of the gas stream , the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
• CPC Class Codes: C10L 2290/02 Combustion or pyrolysis
• CPC Class Codes: C10L 2290/30 Pressing, compressing or compacting
• CPC Class Codes: C10L 2290/54 Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
• CPC Class Codes: C10L 5/361 Briquettes
• CPC Class Codes: C10L 5/48 on industrial residues and waste materials C10L5/403, C10L5/406 take precedence
• CPC Class Codes: C22B 1/005 Preliminary treatment of scrap C22B1/02 - C22B1/26 take precedence

Abstract

A decoating system includes a dust cyclone and a dust briquetter. The dust cyclone is configured to receive an exhaust gas from a decoating kiln of the decoating system and remove organic particulate matter from the exhaust gas as dust. The dust briquetter is configured to receive the dust from the dust cyclone and compress the dust into dust briquettes.

Claims

1-9. -9. (canceled)

10. A method of forming dust briquettes from dust from a dust cyclone of a decoating system comprising:

extracting the dust containing organic particulate matter from the dust cyclone of the decoating system;

cooling the dust from a discharge temperature to a briquetting temperature; and

compressing the dust with a dust briquetter to form dust briquettes.

11. The method of claim 10, wherein cooling the dust and compressing the dust are performed simultaneously by the dust briquetter.

12. The method of claim 10, wherein cooling the dust comprises cooling the dust by the dust briquetter.

13. The method of claim 10, further comprising temporarily storing the dust after cooling for a predetermined time period before compressing the dust.

14. The method of claim 10, further comprising delivering the dust to the dust briquetter after cooling the dust from the discharge temperature to the briquetting temperature.

15. The method of claim 10, wherein cooling the dust comprises introducing water to the dust and flashing off heat as steam.

16. The method of claim 10, further comprising supplying an inert gas within the dust briquetter while compressing the dust to reduce re-oxidation of the dust within the dust briquetter.

17. The method of claim 10, wherein cooling the dust comprises mixing a binding agent with the dust, and wherein the binding agent comprises an inert material.

18. The method of claim 17, wherein mixing the binding agent comprises mixing the binding agent before delivering the dust to the dust briquetter and compressing the dust.

19. The method of claim 17, wherein mixing the binding agent comprises mixing the binding agent with the dust within the dust briquetter.

20. The method of claim 10, wherein compressing the dust comprises at least one of increasing a density of the dust compared to uncompressed dust, decreasing a porosity of the dust compared to uncompressed dust, or increasing a thermal conductivity of the dust compared to uncompressed dust.