Biochar suspended solution

Patent metadata

Field	Value
Publication number	US-10472298-B2
Application number	US-201816111822-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Jun 6, 2011
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A method is provided for producing a biochar solution. The method comprises the steps of collecting biochar particles, dispersing the biochar particles in a liquid solution and adding a stabilizing agent to keep the biochar in flowable suspension. The stabilizing agent may be added to the liquid solution or to the biochar prior to placing the biochar in solution.

First claim

We claim:

1. A method for producing a biochar solution, the method comprising the steps of (i) collecting biochar dust or biochar fines; (ii) dispersing the biochar dust or fines in a liquid solution; and (iii) adding a stabilizing agent to the liquid solution to keep the biochar dust or biochar fines in flowable suspension in the liquid solution.

2. The method of claim 1 where the step of collecting the biochar dust or fines includes collecting biochar from a centrifuge effluent and passing the biochar to equipment for de-sizing.

3. The method of claim 1 where the step of collecting the biochar dust or fines includes collecting biochar from biochar granular product and passing the biochar to equipment for de-sizing.

4. The method of claim 1 where the step of collecting the biochar dust or fines includes collecting the biochar dust or fines from both centrifuge effluent and granulated product and passing the biochar to equipment for de-sizing.

5. The method of claim 2 where the de-sizing equipment is a media mill.

6. The method of claim 3 where the de-sizing equipment is a media mill.

7. The method of claim 1 where the step of collecting the biochar dust or fines includes adding a flocculant to the biochar.

8. The method of claim 1 where the liquid solution includes water.

9. The method of claim 1 where the liquid solution includes both water and an additive.

10. The method of claim 9 where the additive is a fertilizer.

11. The method of claim 1 further including the step of removing larger biochar dust or fines from the liquid solution by filtering the solution.

12. The method of claim 1 where the stabilizing agent is xanthan gum.

13. The method of claim 1 where step of adding a stabilizing agent further includes adding a preservative.

14. The method of claim 1 where the biochar dust or fines used in solution has been treated by infusing a liquid into the pores of the biochar dust or fines.

15. The method of claim 1 where the step of adding the stabilizing agent to keep the biochar dust or fines in flowable suspension is performed before dispersing the biochar dust or fines in a liquid solution.

16. The method of claim 1 where the biochar solution has a concentration of 1-75% biochar dust or fines.

17. The method of claim 1 where the biochar solution has a concentration of 15-70% biochar dust or fines.

18. A biochar solution comprising biochar particles, biochar dust or biochar fines, a liquid solution and a stabilizing agent to keep the biochar particles, dust or fines in suspension in the liquid solution, where the biochar solution has a concentration of 1-75% biochar particles, dust or fines.

19. The biochar solution of claim 18 where the liquid solution is water.

20. The biochar solution of claim 18 where the liquid solution includes both water and an additive.

21. The biochar solution of claim 20 where the additive is a fertilizer.

22. The biochar solution of claim 18 where the stabilizing agent is xanthan gum.

23. The biochar solution of claim 18 where biochar solution further includes a preservative.

24. The biochar solution of claim 18 where the biochar particles, dust or fines used in solution has been treated by infusing a liquid into the pores of the biochar particles, dust or fines.

25. The biochar solution of claim 18 where 90% of the biochar particles, dust or fines are 0.5 mm or less in size.

26. The biochar solution of claim 20 where the additive is a biological agent beneficial to plants.

27. The biochar solution of claim 18 where the biochar solution has a concentration of 15-70% biochar particles, dust or fines.

Assignees

• Cool Planet Energy Systems Inc
• Cool Planet Energy System Inc

Inventors

• Jarand Mark L
• Daugaard Daren Einar
• Thompson Timothy Alan
• Kim Han Suk
• Metier Michael William

Classifications

• C05F11/00 Primary

  Other organic fertilisers · CPC title

• C05G5/27

  Dispersions, e.g. suspensions or emulsions · CPC title

• C05G3/80

  Soil conditioners · CPC title

• C05G3/20

  for preventing the fertilisers being reduced to powder; Anti-dusting additives · CPC title

• C10B57/02

  Multi-step carbonising or coking processes · CPC title