Petrochemical processes

Patent metadata

Field	Value
Publication number	US-9394492-B2
Application number	US-201514666950-A
Country	US
Kind code	B2
Filing date	Mar 24, 2015
Priority date	Apr 26, 2006
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

Petrochemical processes, including reforming processes are described herein. The reforming processes generally include introducing an input stream to a reforming unit having a reforming catalyst disposed therein, wherein the input stream includes a naphtha having an N+2A value of from about 65 to about 85 and contacting the input stream with the reforming catalyst and hydrogen to form an output stream.

First claim

What is claimed is:

1. A petrochemical process comprising:
introducing a first input stream to a cracking unit, wherein the first input stream comprises a naphtha feedstock;
cracking the naphtha feedstock within the cracking unit to form a first output stream comprising light olefins and pygas, wherein the pygas comprises C 5 hydrocarbons;
passing the pygas comprising C 5 hydrocarbons from the cracking unit to an extraction unit;
separating benzene and toluene from the pygas comprising C 5 hydrocarbons within the extraction unit;
recovering a raffinate from the extraction unit;
passing the raffinate from the extraction unit to a reforming unit having a reforming catalyst disposed therein;
contacting the raffinate with the reforming catalyst to form a second output stream; and
recovering the second output stream from the reforming unit.

2. The process of claim 1 , wherein the naphtha feedstock comprises a N+2A value of from about 40 to about 55.

3. The process of claim 1 , wherein the cracking unit comprises a steam cracker.

4. The process of claim 1 , further comprising hydrogenating the pygas comprising C 5 hydrocarbons prior to extraction.

5. The process of claim 1 , wherein the raffinate has a higher N+2A than the naphtha feedstock.

6. The process of claim 1 , wherein the raffinate comprises a N+2A value of from about 75 to about 85.

7. The process of claim 1 , wherein the reforming catalyst comprises a Group VIII noble metal.

8. The process of claim 1 , wherein the reforming catalyst comprises a promoter selected from gallium, tin, copper, chromium, rhenium, iridium and combinations thereof.

9. The process of claim 1 , further comprising supplying hydrogen to the reforming unit.

10. The process of claim 1 , wherein the pygas comprises C 5 to C 14 hydrocarbons.

Assignees

• Fina Technology

Inventors

• Hamper Simon
• Butler James R

Classifications

• C10L10/10

  for improving the octane number · CPC title

• C07C4/04

  Thermal processes {(C07C4/025 takes precedence)} · CPC title

• C10G35/04 Primary

  Catalytic reforming · CPC title

• C10G63/04

  including at least one cracking step · CPC title

• C10L2200/0415

  Light distillates, e.g. LPG, naphtha · CPC title