Method for further processing of carbon raw material

Patent metadata

Field	Value
Publication number	US-11090630-B2
Application number	US-201616061518-A
Country	US
Kind code	B2
Filing date	Dec 8, 2016
Priority date	Dec 18, 2015
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

Process for further use of a water-containing carbon raw material comprising the treatment of the carbon raw material with carbon dioxide or water vapor or a mixture thereof at elevated temperature and the admixing of the thus obtained carbon material with an acid.

First claim

The invention claimed is:

1. A process, comprising:
treating with carbon dioxide, water vapor, or a mixture of both, at a temperature of 1100° C. or less, a carbon raw material obtained from quench water of an acetylene synthesis, to obtain a treated carbon material with an increased specific surface area; and
mixing the treated carbon material with an acid, to obtain a product carbon material,
wherein the carbon raw material has a water content of 55 to 85 wt. % based on a total carbon raw material mass, and a sulfur content of less than 0.05 percent based on a total dry mass of the carbon raw material, and
wherein the product carbon material has a specific surface area in a range of from 500 to 2000 m 2 /g.

2. The process of claim 1 , wherein the product carbon material has an iron content less than 0.018 wt. %, based on the total dry mass.

3. The process of claim 1 , wherein the carbon raw material has a nickel content of less than 0.006 wt. %, based on the total dry mass of the carbon raw material.

4. The process of claim 1 , wherein the treating comprises treating the carbon raw material with the carbon dioxide.

5. The process of claim 1 , further comprising: adjusting the water content of the carbon raw material by drying.

6. The process of claim 1 , wherein the acid comprises hydrochloric acid, sulfuric acid, phosphoric acid, citric acid, oxalic acid, and/or acetic acid.

7. The process of claim 1 , wherein the acid comprises hydrochloric acid and/or sulfuric acid.

8. The process of claim 1 , wherein the acid comprises hydrochloric acid.

9. The process of claim 1 , wherein the product carbon material has a sodium content of less than 0.02 wt. % and/or an iron content of less than 0.025 wt. %, based on the total dry mass.

10. The process of claim 1 , wherein the product carbon material has an iodine number in a range of from 700 mg/g to 1200 mg/g.

11. The process of claim 1 , wherein the carbon raw material has a specific surface area in a range of from 100 to 400 m 2 /g.

12. The process of claim 1 , wherein the carbon raw material has a nitrogen content of less than 1.5 wt. %, based on the total dry mass.

13. The process of claim 1 , wherein the carbon raw material is green coke.

14. The process of claim 1 , further comprising, prior to the treating:
sedimenting the quench water, comprising carbonaceous material, from the acetylene synthesis, to separate off and feed the carbonaceous material to the treating as the carbon raw material.

15. The process of claim 14 , further comprising: dewatering the carbonaceous material after the sedimenting and before feeding the carbonaceous material to the treating as the carbon raw material.

16. The process of claim 1 , wherein the carbon raw material has a water content of 40 to 85 wt. %, based on the total carbon raw material mass.

17. The process of claim 1 , wherein the carbon raw material has a water content of 50 to 85 wt. %, based on the total carbon raw material mass.

18. The process of claim 1 , further comprising: adjusting the water content of the carbon raw material by adding another carbon material.

19. The process of claim 1 , further comprising:
adjusting the water content of the carbon raw material by drying; and
adjusting the water content of the carbon raw material by adding another carbon material.

Assignees

• Basf Se

Inventors

• Rudolf Peter
• Schwab Matthias
• Bartuli Waldemar

Classifications

• B01J20/3085

  Chemical treatments not covered by groups B01J20/3007 - B01J20/3078 · CPC title

• B01J2220/4875

  the starting material being a waste, residue or of undefined composition · CPC title

• B01J20/28011

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

• C01B32/336

  characterised by gaseous activating agents · CPC title

• B01J20/28057

  Surface area, e.g. B.E.T specific surface area · CPC title