PROCESSES FOR HOLDING CHAR IN A CATALYIC FAST PYROLYSIS PROCESS AND CHAR COMPOSITIONS
First Claim
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1. A method for producing aromatic chemicals or olefins, comprising:
- reacting solid biomass in the presence of a catalyst in a reaction zone;
producing a product stream or product streams that exits from the reaction zone;
withdrawing a solid mixture from the reaction zone;
wherein the solid mixture that is removed is separate from the product stream or streams;
separating at least a portion of char from the solid mixture prior to a catalyst regeneration step; and
recovering aromatics or olefins from the product stream.
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Abstract
Methods of separating and utilizing char produced by the catalytic fast pyrolysis of biomass are described. In a preferred method, a portion of the char from a catalytic pyrolysis reactor is recovered and treated and combusted to provide heat to the catalytic pyrolysis reactor. A novel char and methods of amending soil with a char composition are also described.
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Citations
51 Claims
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1. A method for producing aromatic chemicals or olefins, comprising:
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reacting solid biomass in the presence of a catalyst in a reaction zone; producing a product stream or product streams that exits from the reaction zone; withdrawing a solid mixture from the reaction zone;
wherein the solid mixture that is removed is separate from the product stream or streams;separating at least a portion of char from the solid mixture prior to a catalyst regeneration step; and recovering aromatics or olefins from the product stream. - View Dependent Claims (2, 3, 4, 9, 12, 13, 16, 22, 24, 28, 30, 37, 49, 50)
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5-8. -8. (canceled)
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10-11. -11. (canceled)
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14-15. -15. (canceled)
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17-21. -21. (canceled)
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23. (canceled)
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25-27. -27. (canceled)
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29. (canceled)
- 31. A char-based composition (char) comprising at least 1 wt % zeolite or zeolite-containing catalyst and 10 to 99 wt % carbon.
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32-36. -36. (canceled)
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38-41. -41. (canceled)
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43-44. -44. (canceled)
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46. A method of amending soil comprising:
- providing char comprising at least 1% by weight zeolite; and
mixing the char into soil.
- providing char comprising at least 1% by weight zeolite; and
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47-48. -48. (canceled)
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51. (canceled)
Specification