Biogenic porous carbon silicon dioxide compositions

Patent metadata

Field	Value
Publication number	US-12239953-B2
Application number	US-201917250179-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jun 14, 2018
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

Provided are biogenic porous carbon silicon dioxide compositions, as well as related compositions, and methods of making and using such compositions. Exemplary biogenic porous carbon silicon dioxide compositions include a high-carbon biogenic reagent composition that contains 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. The total carbon can be biogenic carbon, and the silicon dioxide can be contained within river rock or silica fume. Also provided are processes for producing such compositions, where the processes can include: preheating a renewable feedstock, pyrolyzing the renewable feedstock, separating certain pyrolysis products, cooling solid pyrolysis products, and introducing silicon dioxide at a certain point in process.

First claim

We 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;
wherein the silicon dioxide is comprised within river rock or
wherein the silicon dioxide is comprised within silica fume.

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

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

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

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

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

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

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

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

10. 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).

11. 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 ).

12. 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.

13. 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 ).

14. 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 ).

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

• B01J2220/42

  Materials comprising a mixture of inorganic materials (materials coated or impregnated on a carrier B01J20/32) · CPC title

• B01J20/3078

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

• B01J20/3028

  Granulating, agglomerating or aggregating · CPC title