Method of enhancing the dry grinding efficiency of petcoke

Patent metadata

Field	Value
Publication number	US-9896635-B2
Application number	US-201515110897-A
Country	US
Kind code	B2
Filing date	Jan 13, 2015
Priority date	Jan 14, 2014
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

In a method of enhancing the dry grinding efficiency of petcoke including adding additives to the petcoke and dry grinding the petcoke together with the additives. The additives may include a combination of at least one organic additive and at least one inorganic additive.

First claim

The invention claimed is:

1. A method of enhancing the dry grinding efficiency of petcoke comprising
adding additives to the petcoke; and
dry grinding the petcoke together with the additives,
wherein said additives comprise a combination of at least one organic additive and at least one inorganic additive, and
wherein said additives are added to the petcoke in an amount of 0.51 to 10 wt. % of petcoke.

2. The method according to claim 1 , wherein the at least one organic additive is selected from the group consisting of alkanolamines, polyols, polyamides, polyesters, polyethers, polycarboxylate esters, polycarboxylate ethers, polyoxyalkylene alkyl sodium carbonate, salts of amines, salts of polyols and combinations thereof.

3. The method according to claim 1 , wherein the at least one inorganic additive is selected from the group consisting of limestone, dolomitic limestone, fly ash, slag, clay, laterite, bauxite, iron ore, sandstone and combinations thereof.

4. The method according to claim 1 , wherein the inorganic additive comprises a first component selected from the group consisting of limestone, dolomitic limestone and combinations thereof and a second component selected from the group consisting of limestone, fly ash, slag, clay, laterite, bauxite, iron ore, sandstone and combinations thereof.

5. The method according to claim 1 , wherein the inorganic additive(s) are added to the petcoke in an amount of 0.5% to 9.99 wt. % of the petcoke.

6. The method according to claim 5 , wherein the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of the petcoke.

7. The method according to claim 2 , wherein the at least one inorganic additive is selected from the group consisting of limestone, dolomitic limestone, fly ash, slag, clay, laterite, bauxite, iron ore, sandstone and combinations thereof.

8. The method according to claim 2 , wherein the inorganic additive comprises a first component selected from the group consisting of limestone, dolomitic limestone and combinations thereof and a second component selected from the group consisting of limestone, fly ash, slag, clay, laterite, bauxite, iron ore, sandstone and combinations thereof.

9. The method according to claim 3 , wherein the inorganic additive comprises a first component selected from the group consisting of limestone, dolomitic limestone and combinations thereof and a second component selected from the group consisting of limestone, fly ash, slag, clay, laterite, bauxite, iron ore, sandstone and combinations thereof.

10. The method according to claim 3 , wherein the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of petcoke.

11. The method according to claim 1 , wherein the inorganic additive(s) are added to the petcoke in an amount of 6-8 wt. % of the petcoke.

12. The method according to claim 2 , wherein the alkanolamines include tripropanolamine and the polyols include diethylene glycol.

13. The method according to claim 1 , wherein the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of the petcoke.

14. The method according to claim 2 , wherein the inorganic additive(s) are added to the petcoke in an amount of 0.5% to 9.99 wt. % of petcoke, and the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of petcoke.

15. The method according to claim 4 , wherein the inorganic additive(s) are added to the petcoke in an amount of 0.5% to 9.99 wt. % of petcoke, and the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of petcoke.

16. The method according to claim 7 , wherein the inorganic additive(s) are added to the petcoke in an amount of 0.5% to 9.99 wt. % of petcoke, and the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of petcoke.

17. The method according to claim 8 , wherein the inorganic additive(s) are added to the petcoke in an amount of 0.5% to 9.99 wt. % of petcoke, and the organic additive(s) are added to the petcoke in an amount of 0.01% to 0.1 wt. % of petcoke.

Assignees

• Holcim Technology Ltd

Inventors

• Khadilkar Shreesh Anant
• Karandikar Manish Vasant
• Lele Pradeep Gopal
• Kulkarni Dhananjay Dinkar

Classifications

• C04B7/4407 Primary

  Treatment or selection of the fuel therefor, e.g. use of hazardous waste as secondary fuel (fuels in general C10L); Use of particular energy sources, e.g. waste hot gases from other processes · CPC title

• C21B5/007

  Conditions of the cokes or characterised by the cokes used · CPC title

• Y02W30/542

  Cross-Sectional Technologies · mapped topic

• C10L2200/04

  Organic compounds · CPC title

• C10L5/366 Primary

  Powders · CPC title