Method of producing aromatic hydrocarbons and olefin from hydrocarbonaceous oils comprising large amounts of polycyclic aromatic compounds

Patent metadata

Field	Value
Publication number	US-9376353-B2
Application number	US-201214355391-A
Country	US
Kind code	B2
Filing date	Oct 31, 2012
Priority date	Nov 1, 2011
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

This invention relates to a method of producing aromatic hydrocarbons and olefin from hydrocarbonaceous oils including large amounts of polycyclic aromatic compounds having two or more rings via partial hydrogenation in the presence of a hydrogenation catalyst and catalytic cracking in the presence of a catalytic cracking catalyst.

First claim

The invention claimed is:

1. A method of producing an aromatic hydrocarbon and an olefin, comprising:
(a) subjecting an oil including a large amount of a polycyclic aromatic compound having two or more rings to partial hydrogenation under reaction conditions of 310˜360° C., 50˜70 atm, and LHSV (Liquid Hourly Space Velocity) of 0.7˜1.0 hr −1 using a hydrogenation catalyst, to obtaining a partially hydrogenated component with one aromatic ring;
(b) subjecting the partially hydrogenated component obtained in (a) to catalytic cracking using a catalytic cracking catalyst, to obtain a catalytically cracked component, wherein the catalytic cracking catalyst is provided in the form of a combination of a zeolite molecular sieve having a large pore size of 6.5Å or more and a zeolite molecular sieve having a medium pore size of 5˜6.5Å, and the weight ratio of the zeolite molecular sieve having a large pore size to the zeolite molecular sieve having a medium pore size is 5/95˜95/5; and
(c) separating the catalytic cracked component obtained in (b) into (i) benzene, toluene, xylene and a C9+ aromatic hydrocarbon, (ii) an olefin component, and (iii) a residual oil.

2. The method of claim 1 , wherein (a) is performed under reaction conditions of 340˜360° C., 55˜65 atm, and LHSV of 0.7˜1.0 hr −1 .

3. The method of claim 1 , further comprising (d) recycling the (iii) residual oil separated in (c) back to (a).

Assignees

• Sk Innovation Co Ltd

Inventors

• Kim Cheol Joong
• Kim Sung Won
• Oh Sang Hun
• Jeong Il Yong
• Go Kang Seok
• Park Sung Bum
• Choo Dae Hyun
• Lee Hyuck Jae
• Kim Hong Chan
• Koh Jae Suk
• Kim Yong Seung
• Kim Gyung Rok
• No Myoung Han
• Choi Sun
• Oh Seung Hoon
• Kim Tae Jin

Classifications

• C07C4/06

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

• C10G69/04 Primary

  including at least one step of catalytic cracking in the absence of hydrogen · CPC title

• C10G2400/20

  C2-C4 olefins · CPC title

• C10G2400/30

  Aromatics · CPC title

• C10G2300/1096

  Aromatics or polyaromatics · CPC title