METHOD FOR GENERATING A SOLUBILIZED TIRE RUBBER BITUMEN COMPOUND

Abstract

A first method for generating a solubilized tire rubber bitumen compound is described. The first method begins by heating a first bitumen compound and a tire rubber compound to generate a bitumen wetted tire rubber mixture. The method includes adding a second bitumen compound to the bitumen wetted tire rubber mixture to generate a fully wetted tire rubber bitumen mixture. The method then proceeds to generate a devulcanized fully wetted tire rubber bitumen mixture, which is heated with mixing to between 500° F. and 700° F. to generate the solubilized tire rubber bitumen compound. Additionally, a second method for generating a solubilized tire rubber bitumen compound is described. The second method includes heating a first bitumen compound and a tire rubber compound to generate a devulcanized tire rubber bitumen mixture. The devulcanized tire rubber bitumen mixture is heated to generate a bitumen wetted devulcanized tire rubber mixture. Then, a second bitumen compound is added to generate a fully wetted devulcanized tire rubber bitumen mixture, which is heated to between 500° F. and 700° F. to generate the solubilized tire rubber bitumen compound.

Description

Claims

1. A method for generating a solubilized tire rubber bitumen compound, the method comprising: receiving a first bitumen compound;receiving a tire rubber compound;heating the first bitumen compound and the tire rubber compound to between 275° F. and 325° F. to generate a bitumen wetted tire rubber mixture;adding a second bitumen compound to the bitumen wetted tire rubber mixture;heating the second bitumen compound and the bitumen wetted tire rubber mixture to between 325° F. and 350° F. to generate a fully wetted tire rubber bitumen mixture;heating the fully wetted tire rubber bitumen mixture to between 350° F. and 500° F. to generate a devulcanized fully wetted tire rubber bitumen mixture; andheating the devulcanized fully wetted tire rubber bitumen mixture to between 500° F. and 700° F. to generate the solubilized tire rubber bitumen compound.

2. The method of claim 1 wherein the devulcanized fully wetted tire rubber bitumen mixture is heated to between 525° F. and 700° F. to generate the solubilized tire rubber bitumen compound.

3. The method of claim 1 wherein the devulcanized fully wetted tire rubber bitumen mixture is heated to between 600° F. and 605° F. to generate the solubilized tire rubber bitumen compound.

4. The method of claim 1 wherein the tire rubber compound and the first bitumen compound are heated to between 300° F. and 310° F. to generate the bitumen wetted tire rubber mixture.

5. The method of claim 1 wherein the fully wetted tire rubber bitumen mixture is heated to between 375° F. and 400° F. to generate the devulcanized fully wetted tire rubber bitumen mixture.

6. The method of claim 1 wherein the fully wetted tire rubber bitumen mixture is heated for between 30 minutes and 60 minutes to generate the devulcanized fully \wetted tire rubber bitumen mixture.

7. The method of claim 1 wherein the devulcanized fully wetted tire rubber bitumen mixture is heated for between 55 minutes and 65 minutes to generate the solubilized tire rubber bitumen compound.

8. The method of claim 1 wherein the bitumen wetted tire rubber mixture includes less than 60% by weight of the tire rubber compound; wherein the fully wetted tire rubber bitumen mixture includes between 10% and 50% by weight of the tire rubber compound; andwherein the solubilized tire rubber bitumen compound includes between 10% and 50% by weight of the tire rubber compound.

9. The method of claim 1 wherein the fully wetted tire rubber bitumen mixture is heated and mixed under one of vacuum and non-oxygenated gas to generate the devulcanized fully wetted tire rubber bitumen mixture; and wherein the devulcanized fully wetted tire rubber bitumen mixture is heated and mixed under one of vacuum and non-oxygenated gas to generate the solubilized tire rubber bitumen compound.

10. The method of claim 1 further comprising cooling the solubilized tire rubber bitumen compound below 400° F.

11. A method for generating a solubilized tire rubber bitumen compound, the method comprising: receiving a first bitumen compound;receiving a tire rubber compound;heating the first bitumen compound and the tire rubber compound to between 350° F. and 500° F. to generate a devulcanized tire rubber bitumen mixture;heating the devulcanized tire rubber bitumen mixture to between 275° F. and 325° F. to generate a bitumen wetted devulcanized tire rubber mixture;adding a second bitumen compound to the bitumen wetted devulcanized tire rubber mixture;heating the second bitumen compound and the bitumen wetted devulcanized tire rubber mixture to between 325° F. and 350° F. to generate a fully wetted devulcanized tire rubber bitumen mixture; andheating the bitumen wetted devulcanized tire rubber mixture to between 500° F. and 700° F. to generate the solubilized tire rubber bitumen compound.

12. The method of claim 11 wherein the bitumen wetted devulcanized tire rubber mixture is heated to between 525° F. and 700° F. to generate the solubilized tire rubber bitumen compound.

13. The method of claim 11 wherein the bitumen wetted devulcanized tire rubber mixture is heated to between 600° F. and 605° F. to generate the solubilized tire rubber bitumen compound.

14. The method of claim 11 wherein the tire rubber compound and the first bitumen compound are heated to between 375° F. and 400° F. to generate the devulcanized tire rubber bitumen mixture.

15. The method of claim 11 wherein the devulcanized tire rubber bitumen mixture is heated to between 300° F. and 310° F. to generate the bitumen wetted devulcanized tire rubber mixture.

16. The method of claim 11 wherein the bitumen wetted tire rubber mixture includes less than 60% by weight of the tire rubber compound; wherein the fully wetted tire rubber bitumen mixture includes between 10% and 50% by weight of the tire rubber compound; andwherein the solubilized tire rubber bitumen compound includes between 10% and 50% by weight of the tire rubber compound.

17. The method of claim 11 wherein the first bitumen compound and the tire rubber compound are heated for between 30 minutes and 60 minutes to generate the devulcanized tire rubber bitumen mixture.

18. The method of claim 11 wherein the devulcanized tire rubber bitumen mixture is heated for between 10 minutes and 20 minutes to generate the bitumen wetted devulcanized tire rubber mixture.

19. The method of claim 11 wherein the second bitumen compound and the bitumen wetted devulcanized tire rubber mixture are heated for between 55 minutes and 65 minutes to generate the solubilized tire rubber bitumen compound.

20. The method of claim 11 wherein the first bitumen compound and the tire rubber compound are heated and mixed under one of vacuum and non-oxygenated gas to generate the devulcanized tire rubber bitumen mixture; and wherein the bitumen wetted devulcanized tire rubber mixture is heated and mixed under one of vacuum and non-oxygenated gas to generate the solubilized tire rubber bitumen compound.