Producing method of monocyclic aromatic hydrocarbons and monocyclic aromatic hydrocarbon production plant

Patent metadata

Field	Value
Publication number	US-9255042-B2
Application number	US-201214119571-A
Country	US
Kind code	B2
Filing date	May 24, 2012
Priority date	May 24, 2011
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A producing method of monocyclic aromatic hydrocarbons from the oil feedstock having a 10 volume % distillation temperature of more than or equal to 140° C. and a 90 volume % distillation temperature of less than or equal to 380° C. by bringing into contact with an aromatic production catalyst includes the steps of: introducing the oil feedstock into a cracking and reforming reaction apparatus housing the aromatic production catalyst; bringing the oil feedstock and the aromatic production catalyst into contact with each other at the inside of the cracking and reforming reaction apparatus; heating the oil feedstock in advance before introducing the oil feedstock into the cracking and reforming reaction apparatus and forming a two-phase gas-liquid stream; separating the two-phase gas-liquid stream into a gas fraction and a liquid fraction; and introducing the gas fraction and the liquid fraction at different positions of the cracking and reforming reaction apparatus.

First claim

The invention claimed is:

1. A producing method of monocyclic aromatic hydrocarbons in which reaction products including monocyclic aromatic hydrocarbons are produced by bringing an oil feedstock and an aromatic production catalyst into contact with each other, the oil feedstock having a 10 volume % distillation temperature of more than or equal to 140° C. and a 90 volume % distillation temperature of less than or equal to 380° C., the method comprising the steps of:
introducing the oil feedstock into a cracking and reforming reaction apparatus housing the aromatic production catalyst;
bringing the oil feedstock and the aromatic production catalyst into contact with each other in the cracking and reforming reaction apparatus housing the aromatic production catalyst;
heating the oil feedstock in advance before introducing the oil feedstock into the cracking and reforming reaction apparatus and forming a two-phase gas-liquid stream;
separating the two-phase gas-liquid stream into a gas fraction and a liquid fraction; and
introducing the gas fraction and the liquid fraction at different positions of the cracking and reforming reaction apparatus to convert the fractions of the oil feedstock to monocyclic aromatic hydrocarbons.

2. The producing method of monocyclic aromatic hydrocarbons according to claim 1 , wherein
the cracking and reforming reaction apparatus is provided with
a cracking and reforming reactor housing the aromatic production catalyst,
a heat tank heating the aromatic production catalyst withdrawn from the inside of the cracking and reforming reactor by a combustion, and
a catalyst transfer pipe transferring the aromatic production catalyst heated at the heat tank to the cracking and reforming reactor,
wherein in the step of introducing, at least the liquid fraction is introduced into the catalyst transfer pipe.

3. The producing method of monocyclic aromatic hydrocarbons according to claim 2 , wherein
in the step of introducing, at least the gas fraction is introduced into the cracking and reforming reactor.

Assignees

• Yanagawa Shinichiro
• Iwasa Yasuyuki
• Yasui Susumu
• Sugi Yoshishige
• Fukui Atsushi
• Nagumo Atsuro
• Jx Nippon Oil & Energy Corp
• Chiyoda Corp

Inventors

• Yanagawa Shinichiro
• Iwasa Yasuyuki
• Yasui Susumu
• Sugi Yoshishige
• Fukui Atsushi
• Nagumo Atsuro

Classifications

• B01J29/7057

  Zeolite Beta · CPC title

• C07C4/06 Primary

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

• B01J29/70

  of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 · CPC title

• B01D3/009

  in combination with chemical reactions · CPC title

• B01J29/185

  containing rare earth elements, titanium, zirconium, hafnium, zinc, cadmium, mercury, gallium, indium, thallium, tin or lead · CPC title