Methods for utilizing olefin coke in a steel making process and products made therefrom

Patent metadata

Field	Value
Publication number	US-10323291-B2
Application number	US-201515329134-A
Country	US
Kind code	B2
Filing date	Jul 14, 2015
Priority date	Jul 31, 2014
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

Methods and compositions for producing reduced carbon footprint steel compositions by providing a molten steel having a carbon content; and introducing a carbon containing agent into the molten steel. At least a portion of the carbon containing agent is a reclaimed olefin coke.

First claim

What is claimed is:

1. A composition comprising:
a) a first coke component comprising a reclaimed olefin coke; and
b) a second coke component comprising coal or metallurgical coke, wherein the reclaimed olefin coke is a by-product of a olefin production process; and
wherein the olefin production process is steam cracking of olefins.

2. The composition of claim 1 , wherein the reclaimed olefin coke comprises at least about 75 wt % carbon.

3. The composition of claim 1 , wherein the reclaimed olefin coke comprises less than or equal to about 1 wt % sulfur.

4. A method comprising the steps of:
a) providing a molten steel having a carbon content; and
b) introducing a carbon containing recarburizing agent into the molten steel under conditions effective to provide a recarburized molten steel composition having an increased carbon content;
wherein at least a portion of the carbon containing recarburizing agent comprises a reclaimed olefin coke, wherein the reclaimed olefin coke is a by-product of a olefin production process; and
wherein the olefin production process is steam cracking of olefins.

5. The method of claim 4 , wherein the olefin production process comprises production of ethylene, propylene, or a combination thereof.

6. The method of claim 4 , wherein the reclaimed olefin coke comprises less than or equal to about 1 wt % sulfur.

7. The method of claim 4 , wherein the molten steel is provided in a melting furnace.

8. The method of claim 4 , wherein the molten steel is provided in a blast oxygen furnace, induction furnace, or electric arc furnace.

9. The method of claim 4 , wherein the recarburizing agent is introduced into the molten steel at a melt furnace or ladle furnace.

10. The method of claim 4 , wherein the method has a reduced carbon footprint that is less than a reference carbon footprint of a substantially identical reference method that utilizes a substantially identical amount of a reference recarburizing agent, and wherein the reference recarburizing agent only contains coal or metallurgic coke.

11. A method comprising the steps of:
a) forming a molten steel in an electric arc furnace;
b) introducing a carbon containing foaming agent into the molten steel under conditions effective to form a slag layer and a refined molten steel composition; and
c) separating at least portion of the refined molten steel composition from the slag layer;
wherein at least a portion of the carbon containing foaming agent comprises a reclaimed olefin coke, wherein the reclaimed olefin coke is a by-product of a olefin production process; and
wherein the olefin production process is steam cracking of olefins.

12. The method according to claim 11 , wherein the method has a reduced carbon footprint that is less than a reference carbon footprint of a substantially identical reference method that utilizes a substantially identical amount of a reference foaming agent, and wherein the reference foaming agent only contains coal, metallurgic coke, or calcined petroleum coke (CPC).

13. The method of claim 12 , wherein the reduced carbon footprint is characterized as at least 0.56 ton CO 2 less than the reference carbon footprint per ton of reclaimed olefin coke introduced into the molten steel.

14. The method of claim 12 , wherein the reclaimed olefin coke is a by-product of a olefin production process.

Assignees

• Sabic Global Technologies Bv

Inventors

• Al-Ghamdi Ahmad
• Al-Dhafeery Yousif
• Jaffar Abdulrasheed

Classifications

• C21C7/0075

  Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle · CPC title

• C21C7/0025

  Adding carbon material · CPC title

• C21C5/5241

  in an inductively heated furnace · CPC title

• C21C5/5211

  in an alternating current [AC] electric arc furnace · CPC title

• C21B13/0066

  Preliminary conditioning of the solid carbonaceous reductant · CPC title