Method for upgrading hydrocarbon using C4, C5 and C6 streams

Patent metadata

Field	Value
Publication number	US-10647627-B2
Application number	US-201514887929-A
Country	US
Kind code	B2
Filing date	Oct 20, 2015
Priority date	Oct 23, 2014
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

The present disclosure relates to a method for upgrading hydrocarbon using C4, C5 and C6 streams, and more specifically, to a method for upgrading hydrocarbons using C4, C5 and C6 streams. The method includes the steps of: preparing C4, C5 and C6 streams, which are the products of naphtha catalytic cracking (NCC) process, heavy oil upgrading process, thermal cracking process, or fluidized catalytic cracking (FCC or RFCC) process; oligomerizing the C4, C5 and C6 streams with a catalyst to produce branched unsaturated hydrocarbons; and fractional distillating the branched unsaturated hydrocarbons to separate into C14-18 products or C32-40 products.

First claim

What is claimed is:

1. A method for oligomerizing C 4 , C 5 and C 6 hydrocarbon streams comprising:
preparing C 4 , C 5 and C 6 hydrocarbon streams in a Residue Fluidized Catalytic Cracking (RFCC) process;
oligomerizing the C 4 , C 5 and C 6 hydrocarbon streams with a catalyst to produce branched unsaturated hydrocarbons;
separating the branched unsaturated hydrocarbons in a fractional distillation column to separate a first fraction comprising C 14 -C 18 branched unsaturated hydrocarbons and a second fraction comprising C 32 -C 40 branched unsaturated hydrocarbons; and
subjecting the C 32 -C 40 branched unsaturated hydrocarbons in the second fraction to aromatic alkylation at a temperature of 150 to 350° C. to produce a second alkylaromatic product having a pour point of less than −50° C.

2. The method of claim 1 , wherein the oligomerization is carried out at reaction temperature of 80 to 200° C. and under pressure of 10 to 60 bars, and the method further comprises separating C 4 , C 5 and C 6 saturated hydrocarbons produced by the oligomerization reaction; partially dehydrogenating the separated C 4 , C 5 and C 6 saturated hydrocarbons to produce C 4 , C 5 and C 6 unsaturated hydrocarbons; and mixing the C 4 , C 5 and C 6 unsaturated hydrocarbons with the C 4 , C 5 and C 6 hydrocarbon streams.

3. The method of claim 1 , wherein the oligomerization reaction is carried out at a temperature of 200 to 300° C. and under pressure of 10 to 90 bars.

4. The method of claim 1 , wherein C 32 -C 40 products have a boiling point of 340° C. or more.

5. The method of claim 1 , wherein the catalyst is a zeolite, a cationic catalyst (clay), an acid catalyst, or a metallocene-based catalyst.

Assignees

• Sk Innovation Co Ltd
• Sk Energy Co Ltd

Inventors

• Jeon Hee-Jung
• Kim Yong-Woo

Classifications

• C10G2300/304

  Pour point, cloud point, cold flow properties · CPC title

• C10G35/00

  Reforming naphtha · CPC title

• C10G57/02 Primary

  with polymerisation · CPC title

• C10G11/18

  according to the "fluidised-bed" technique · CPC title

• C10G57/005

  with alkylation · CPC title