Biogenic porous carbon silicon dioxide compositions and methods of making and using same

Patent metadata

Field	Value
Publication number	US-2021220801-A1
Application number	US-201917250179-A
Country	US
Kind code	A1
Filing date	Jun 13, 2019
Priority date	Jun 14, 2018
Publication date	Jul 22, 2021
Grant date	—

Abstract

In various embodiments, the present disclosure provides biogenic porous carbon silicon dioxide compositions and methods of production and uses thereof.

First claim

1 . A high-carbon biogenic reagent composition comprising, on a dry basis:
at least about 50 wt % total carbon, at most about 5 wt % hydrogen, at most about 1 wt % nitrogen, at most about 0.5 wt % phosphorus, at most about 0.2 wt % sulfur, at most about 0.02 wt % titanium, at most about 0.5% calcium, at most about 0.1% aluminum, and silicon dioxide; wherein the total carbon comprises biogenic carbon.

2 - 3 . (canceled)

4 . The high-carbon biogenic reagent composition of claim 1 , wherein the silicon dioxide is comprised within river rock.

5 . The high-carbon biogenic reagent composition of claim 1 , wherein the silicon dioxide is comprised within silica fume.

6 . The high-carbon biogenic reagent composition of claim 1 , comprising at least about 65 wt % total carbon.

7 . (canceled)

8 . The high-carbon biogenic reagent composition of claim 1 , comprising at least about 95 wt % total carbon.

9 . The high-carbon biogenic reagent composition of claim 1 , comprising at least about 15 wt % silicon dioxide.

10 . The high-carbon biogenic reagent composition of claim 1 , comprising at least about 25 wt % silicon dioxide.

11 . The high-carbon biogenic reagent composition of claim 1 , comprising at least about 1 wt % silicon dioxide.

12 . The high-carbon biogenic reagent composition of claim 1 , wherein the high-carbon biogenic reagent composition has been extruded.

13 . The high-carbon biogenic reagent composition of claim 1 , wherein the high-carbon biogenic reagent composition has been densified.

14 . The high-carbon biogenic reagent composition of claim 1 , wherein the high-carbon biogenic reagent composition is pellet shaped.

15 . The high-carbon biogenic reagent composition of claim 1 , wherein the high-carbon biogenic reagent composition has dimensions of at least about 0.64 cm (0.25 in) by about 2.5 cm (1.0 in) to at most about 5.1 cm (2.0 in) by about 15 cm (6.0 in).

16 . The high-carbon biogenic reagent composition of claim 1 , wherein the composition has a bulk density of about 560 to about 720 kg/m 3 (35 to 45 lb/ft 3 ).

17 . The high-carbon biogenic reagent composition of claim 1 , wherein the high-carbon biogenic reagent composition has an iodine number of at least about 300.

18 . The high-carbon biogenic reagent composition of claim 1 , comprising:
at least about 50 wt % total carbon, at most about 5 wt % hydrogen, at most about 1 wt % nitrogen, at most about 0.5 wt % phosphorus, at most about 0.2 wt % sulfur, at most about 0.02 wt % titanium, at most about 0.5% calcium, at most about 0.1% aluminum, and at least about 15 wt % silicon dioxide; wherein the silicon dioxide is comprised within river rock; wherein the total carbon comprises biogenic carbon; and wherein the high-carbon biogenic reagent composition has been densified, is pellet shaped with dimensions of at least about 0.64 cm (0.25 in) by about 2.5 cm (1.0 in), and has a bulk density of about 560 to about 720 kg/m 3 (35 to 45 lb/ft 3 ).

19 . The high-carbon biogenic reagent composition of claim 1 , comprising:
at least about 50 wt % total carbon, at most about 5 wt % hydrogen, at most about 1 wt % nitrogen, at most about 0.5 wt % phosphorus, at most about 0.2 wt % sulfur, at most about 0.02 wt % titanium, at most about 0.5% calcium, at most about 0.1% aluminum, and at least about 15 wt % silicon dioxide; wherein the silicon dioxide is comprised within silica fume; wherein the total carbon comprises biogenic carbon; and wherein the high-carbon biogenic reagent composition has been densified, is pellet shaped with dimensions of at least about 0.64 cm (0.25 in) by about 2.5 cm (1.0 in), and has a bulk density of about 560 to about 720 kg/m 3 (35 to 45 lb/ft 3 ).

20 . A process for producing a high-carbon biogenic reagent, said process comprising:
providing a carbon-containing feedstock comprising dry biomass; in a preheating zone, preheating said feedstock in the presence of a substantially inert gas for at least about 5 minutes and with a preheating temperature selected from about 80° C. to about 500° C.; in a pyrolysis zone, pyrolyzing said feedstock in the presence of a substantially inert gas for at least about 10 minutes and with a pyrolysis temperature selected from about 250° C. to about 700° C., to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases; separating at least a portion of said condensable vapors and at least a portion of said non-condensable gases from said hot pyrolyzed solids; in a cooling zone, cooling said hot pyrolyzed solids, in the presence of said substantially inert gas for at least about 5 minutes and with a cooling temperature less than said pyrolysis temperature, to generate warm pyrolyzed solids; in a cooler that is separate from said cooling zone, cooling said warm pyrolyzed solids to generate cool pyrolyzed solids; and recovering a high-carbon biogenic reagent comprising at least a portion of said cool pyrolyzed solids; wherein the process further comprises introducing silicon dioxide into said process.

21 . The process of claim 20 , further comprising drying said feedstock to remove at least a portion of moisture, if any, contained within said feedstock prior to preheating said feedstock.

22 . (canceled)

23 . The process of claim 20 , wherein introducing silicon dioxide comprises introducing silica fume.

24 . The process of claim 20 , wherein introducing silicon dioxide comprises introducing river rock.

25 - 26 . (canceled)

Assignees

• Carbon Tech Holdings Llc

Inventors

• Mennell James A
• Despen Daniel J
• Slack Dustin

Classifications

• C01B32/324

  from waste materials, e.g. tyres or spent sulfite pulp liquor · CPC title

• Y02E50/10

  Biofuels, e.g. bio-diesel · CPC title

• B01J20/103 Primary

  comprising silica · CPC title

• B01J20/28011

  Other properties, e.g. density, crush strength · CPC title

• B01J20/3078

  Thermal treatment, e.g. calcining or pyrolizing · CPC title