Granted Patent B2

US 12,297,399 · App. 18/325,397 · Granted May 13, 2025

Inventors: James A Mennell (Brighton, UT); Daniel J. Despen (Oakdale, MN)

Assignee: Carbon Technology Holdings, LLC

C10L5/447B01J21/18C01B32/312C01B32/318C10B39/00C10B39/02C10B41/00C10B43/02C10B45/00C10B47/30C10B49/02C10B53/02C10B57/02C10B57/06C10B57/10C10L5/04C10L5/36C10L5/363C10L5/365C10L5/366C10L5/442C21B5/007C21C5/52C22B4/02H01B1/04C10L2200/0204C10L2200/025C10L2200/0469C10L2290/02C10L2290/06C10L2290/08C10L2290/145C10L2290/28C10L2290/30C10L2290/50C10L2290/52C10L2290/58C10L2290/60C21B13/0066Y02E50/10Y02E50/30Y02P10/143Y02P20/129Y02P20/145Y02W10/30Y02W10/37

Abstract

Claims (18)

1. A process for producing a high-carbon biogenic reagent, the process comprising:

providing a carbon-containing feedstock comprising biomass;

in a pyrolysis zone, pyrolyzing the feedstock in the presence of a substantially inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases;

separating at least a portion of the condensable vapors and at least a portion of the non-condensable gases from the hot pyrolyzed solids;

in a cooling zone, cooling the hot pyrolyzed solids, in the presence of the substantially inert gas with a cooling-zone temperature less than the pyrolysis temperature, to generate warm pyrolyzed solids;

in a cooler that is separate from the cooling zone, cooling the warm pyrolyzed solids to generate cool pyrolyzed solids;

recovering a high-carbon biogenic reagent comprising at least a portion of the cool pyrolyzed solids; and

forming a fine powder from the high-carbon biogenic reagent.

2. The process of claim 1 , comprising drying the feedstock to remove at least a portion of moisture contained within the feedstock.

3. The process of claim 1 , comprising deaerating the feedstock to remove at least a portion of interstitial oxygen contained with the feedstock.

4. The process of claim 1 , comprising introducing at least one additive: to the process prior to the forming; to the high-carbon biogenic reagent during the forming; and/or to the high-carbon biogenic reagent after the forming.

5. The process of claim 1 , wherein the recovering comprises recovering a high-carbon biogenic reagent comprising at least 35% of the carbon comprised within the feedstock.

6. The process of claim 1 , wherein the recovering comprises recovering a high-carbon biogenic reagent comprising at least 70% of the carbon comprised within the feedstock.

7. The process of claim 6 , wherein the carbon comprises fixed carbon and carbon from volatile matter.

8. The process of claim 1 , wherein the high-carbon biogenic reagent has an energy content of at least 11,000 Btu/lb on a dry basis.

9. The process of claim 1 , wherein the forming comprises forming the high-carbon biogenic reagent into: a fine powder by particle-size reduction; a structural object by pressing, binding, pelletizing, or agglomeration; a structural object whose structure and/or strength are substantially derived from the feedstock, and/or is in substantially the same structural form as the feedstock.

10. The process of claim 1 , comprising preheating, and wherein the preheating for at least 5 minutes and with a preheating temperature selected from about 80° C. to about 500° C.; and wherein the pyrolyzing comprises pyrolyzing for at least 10 minutes and with a pyrolysis temperature of at least about 250° C.; and wherein the cooling comprises cooling for at least 5 minutes.

11. The process of claim 1 , wherein the pyrolyzing comprises pyrolyzing for at least 10 minutes and with a pyrolysis temperature of at least about 250° C.; and wherein the cooling comprises cooling for at least 5 minutes.

Assignments (7)

Continuity (22)

References Cited (400)