[특허]Pyrolysis process and products

Reklaim, Inc.

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특허 상세정보

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Pyrolysis process and products

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10B-051/00 C09C-001/48 C10B-007/02 C10B-007/14 C10B-047/34 C10B-049/04 C10B-053/07 C10G-003/00 C10B-053/00
출원번호	US-0542412 (2014-11-14)
등록번호	US-9777159 (2017-10-03)
발명자 / 주소	Horn, Joel Kapral, Daniel F. Langley, Jr., William J. Reynolds, Thomas A.
출원인 / 주소	Reklaim, Inc.
대리인 / 주소	Rutan & Tucker, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 129

초록

A pyrolysis device and process to convert a carbonaceous feedstock to a carbon solid and pyrolysis gas, and processes for refining the resulting carbon solid and pyrolysis gases. The pyrolysis process may include introducing a carbonaceous feedstock into a pyrolysis processor having a vertical rotary tray processor, heating the feedstock to a temperature above about 790° F., removing a carbon material from a bottom of the pyrolysis processor, and removing a pyrolysis gas from a top of the pyrolysis processor.

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1. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor comprising a plurality of trays and a heating element, the introducing comprising deoxygenating the carbonaceous feedstock by utilizing a nitrogen purge system;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;removing carbon black from a bottom portion of the pyrolysis processor; andremoving pyrolysis gasses from a top portion of the pyrolysis processor. 2. The method according to claim 1, wherein the plurality of trays are aligned with and supported by a rotating drive shaft. 3. The method according to claim 2, further comprising rotating the plurality of trays around the drive shaft. 4. The method according to claim 1, wherein the circulating pyrolysis gasses provide convective heat transfer to the solids to contribute to the maintenance in the solids of a generally uniform temperature. 5. The method according to claim 1, wherein the heating element provides radiative heat. 6. The method according to claim 1, wherein the pyrolysis gasses formed at trays positioned lower in the pyrolysis processor circulate upward to trays positioned higher in the pyrolysis processor. 7. The method according to claim 1, wherein the moving step includes using a leveling arm to level the solids in the trays, and using a rake for dropping the solids through slots in the trays. 8. The method according to claim 1, wherein the introducing step comprises introducing steel-free tire shreds having a size of approximately ¾×¾×⅜ inch. 9. The method according to claim 1, further comprising degassing the feedstock before introducing the feedstock into the pyrolysis processor and degassing the carbon material from the pyrolysis processor, wherein the degassed feedstock is transported to the pyrolysis processor and the degassed carbon material is transported from the pyrolysis processor through a cooling screw including a cooling material through a shaft, flight, and jacket of the cooling screw. 10. The method according to claim 1, wherein the step of removing carbon black comprises removing carbon black comprising approximately 80-99% carbon containing up to 4% surface bound pyrolysis oil intermixed with 1-19% inorganic ash, with organic compounds intermixed with up to 2% ZnS particles. 11. The method according to claim 1, further comprising processing the carbon black removed from the bottom portion of the pyrolysis processor, the processing comprising: size reducing the carbon black to create a reduced carbon black product generally under 20 micrometers;classifying the reduced carbon black product by size to remove particles over an undesirable size to provide a generally uniform carbon black product;pelletizing the generally uniform carbon black product by mixing the generally uniform carbon black product with a binder, forming pellets, and drying the pellets; andscreening the pellets for a desired size distribution. 12. The method according to claim 11, wherein size reducing the carbon black is performed by a size reduction mill, the classifying is performed with a series of screens of desired mesh size, the pelletizing comprises pelletizing with a binder of a pyrolysis-derived oil product, and the screening produces a desired size distribution of between minus 14 mesh and positive 35 mesh. 13. The method according to claim 1, further comprising maintaining a temperature gradient throughout the pyrolysis processor between 1° F. and 40° F. 14. The method according to claim 1, wherein the nitrogen purge system comprises a holding chamber, wherein the deoxygenating comprises isolating amounts of the carbonaceous feedstock in the holding chamber and removing air from the carbonaceous feedstock using nitrogen. 15. The method according to claim 1, wherein the pyrolysis processor includes a first airlock positioned at the top portion, and a second airlock positioned at the bottom portion and wherein the nitrogen purge system includes a first nitrogen purge system and a second nitrogen purge system, the method further comprising deoxygenating materials passing through the first and second airlocks by using the first and second nitrogen purge systems. 16. The method according to claim 15, wherein the first and second nitrogen purge systems comprise respective first and second holding chambers, wherein the deoxygenating comprises isolating amounts of the materials in the holding chambers and removing air therefrom using nitrogen. 17. The method according to claim 1, wherein the introducing comprises maintaining a neutral pressure in the pyrolysis processor at +/−3 inches WC. 18. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor comprising a plurality of trays and a heating element, wherein the plurality of trays are aligned with and supported by a rotating drive shaft;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;removing carbon black from a bottom portion of the pyrolysis processor; andremoving pyrolysis gasses from a top portion of the pyrolysis processor. 19. The method according to claim 18, further comprising rotating the plurality of trays around the drive shaft. 20. The method according to claim 18, wherein the introducing comprises maintaining a neutral pressure in the pyrolysis processor at +/−3 inches WC. 21. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor comprising a plurality of trays and a heating element;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;removing carbon black from a bottom portion of the pyrolysis processor, the carbon black comprising approximately 80-99% carbon containing up to 4% surface bound pyrolysis oil intermixed with 1-19% inorganic ash, with organic compounds intermixed with up to 2% ZnS particles; andremoving pyrolysis gasses from a top portion of the pyrolysis processor. 22. The method according to claim 21, wherein the introducing comprises maintaining a neutral pressure in the pyrolysis processor at +/−3 inches WC. 23. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor comprising a plurality of trays and a heating element;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;removing carbon black from a bottom portion of the pyrolysis processor;removing pyrolysis gasses from a top portion of the pyrolysis processor; andprocessing the carbon black removed from the bottom portion of the pyrolysis processor, the processing comprising: size reducing the carbon black to create a reduced carbon black product generally under 20 micrometers;classifying the reduced carbon black product by size to remove particles over an undesirable size to provide a generally uniform carbon black product;pelletizing the generally uniform carbon black product by mixing the generally uniform carbon black product with a binder, forming pellets, and drying the pellets; andscreening the pellets for a desired size distribution. 24. The method according to claim 23, wherein the introducing comprises maintaining a neutral pressure in the pyrolysis processor at +/−3 inches WC. 25. The method according to claim 23, wherein size reducing the carbon black is performed by a size reduction mill, the classifying is performed with a series of screens of desired mesh size, the pelletizing comprises pelletizing with a binder of a pyrolysis-derived oil product, and the screening produces a desired size distribution of between minus 14 mesh and positive 35 mesh. 26. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor comprising a plurality of trays and a heating element;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;maintaining a temperature gradient throughout the pyrolysis processor between 1° F. and 40° F.;removing carbon black from a bottom portion of the pyrolysis processor; andremoving pyrolysis gasses from a top portion of the pyrolysis processor. 27. The method according to claim 26, wherein the introducing comprises maintaining a neutral pressure in the pyrolysis processor at +/−3 inches WC. 28. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor comprising: a plurality of trays;a heating element;a first airlock positioned at the top portion; anda second airlock positioned at a bottom portion;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;removing carbon black from a bottom portion of the pyrolysis processor;removing pyrolysis gasses from a top portion of the pyrolysis processor; anddeoxygenating materials passing through the first and second airlocks by using a first and second nitrogen purge system. 29. The method according to claim 28, wherein the introducing comprises maintaining a neutral pressure in the pyrolysis processor at +/−3 inches WC. 30. The method according to claim 28, wherein the first and second nitrogen purge systems comprise respective first and second holding chambers, wherein the deoxygenating comprises isolating amounts of the materials in the holding chambers and removing air therefrom using nitrogen. 31. A method of pyrolysis to recover the carbon black in steel-free tire shreds, comprising: introducing a carbonaceous feedstock consisting of steel-free tire shreds into a top portion of a vertical tray pyrolysis processor maintained at a generally neutral pressure of +/−3 inches WC, the processor comprising a plurality of trays and a heating element;heating the tire shreds to a temperature above about 790° F. to pyrolyze the tire shreds and form a plurality of solids and pyrolysis gasses;circulating the pyrolysis gasses in the pyrolysis processor;moving the solids from trays positioned higher in the pyrolysis processor to trays positioned lower in the pyrolysis processor, the solids contacting the pyrolysis gasses during the moving;removing carbon black from a bottom portion of the pyrolysis processor; andremoving pyrolysis gasses from a top portion of the pyrolysis processor.

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