Butadiene production system and butadiene production method

Patent metadata

Field	Value
Publication number	US-10189754-B2
Application number	US-201615527033-A
Country	US
Kind code	B2
Filing date	Jan 13, 2016
Priority date	Jan 13, 2015
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A butadiene production system and a butadiene production method are provided in which butadiene can be produced with a high yield. The butadiene production system ( 1 ) includes: a gas preparation device ( 10 ) that heats raw materials to prepare a mixed gas including hydrogen and carbon monoxide; an ethanol production device ( 12 ) that is provided downstream of the gas preparation device ( 10 ) and brings the mixed gas including hydrogen and carbon monoxide into contact with a first catalyst to obtain ethanol; a butadiene production device ( 16 ) that is provided downstream of the ethanol production device ( 12 ) and brings the ethanol into contact with a second catalyst to obtain butadiene; and return means ( 18 ) for returning hydrogen, which is produced as a by-product in the butadiene production device ( 16 ), to the ethanol production device ( 12 ). In addition, in the butadiene production method, the butadiene production system ( 1 ) is used.

First claim

The invention claimed is:

1. A butadiene production system, comprising:
a gas preparation device that heats raw materials to prepare a mixed gas comprising hydrogen and carbon monoxide;
an ethanol production device that is provided downstream of the gas preparation device and brings the mixed gas into contact with a catalyst (X) to obtain ethanol;
a butadiene production device that is provided downstream of the ethanol production device and brings the ethanol into contact with a catalyst (Y) different from the catalyst (X) to obtain butadiene; and
a return means for returning hydrogen, which is produced as a by-product in the butadiene production device, to the ethanol production device.

2. A butadiene production system, comprising:
a gas preparation device that heats raw materials to prepare a mixed gas comprising hydrogen and carbon dioxide;
an ethanol production device that is provided downstream of the gas preparation device and brings the mixed gas into contact with a catalyst (Z) to obtain ethanol;
a butadiene production device that is provided downstream of the ethanol production device and brings the ethanol into contact with a catalyst (Y) different from the catalyst (Z) to obtain butadiene; and
a return means for returning hydrogen, which is produced as a by-product in the butadiene production device, to the ethanol production device.

3. The butadiene production system according to claim 1 ,
wherein the return means comprises a pipe through which the butadiene production device and the ethanol production device are connected.

4. A method of producing butadiene, comprising:
a gas preparation step of heating raw materials to prepare a mixed gas comprising hydrogen and carbon monoxide;
an ethanol production step of bringing the mixed gas into contact with a catalyst (X) to obtain ethanol;
a butadiene production step of bringing the ethanol into contact with a catalyst (Y) different from the catalyst (X) to obtain butadiene; and
a return step of returning hydrogen, which is produced as a by-product in the butadiene production step, to the ethanol production step.

5. A method of producing butadiene, comprising:
a gas preparation step of heating raw materials to prepare a mixed gas comprising hydrogen and carbon dioxide;
an ethanol production step of bringing the mixed gas into contact with a catalyst (Z) to obtain ethanol;
a butadiene production step of bringing the ethanol into contact with a catalyst (Y) different from the catalyst (Z) to obtain butadiene; and
a return step of returning hydrogen, which is produced as a by-product in the butadiene production step, to the ethanol production step.

6. The butadiene production system according to claim 2 ,
wherein the return means comprises a pipe through which the butadiene production device and the ethanol production device are connected.

7. The butadiene production system according to claim 1 ,
wherein the catalyst (X) is a hydrogenation-active metal or an aggregate of a hydrogenation-active metal and an auxiliary active metal, wherein the hydrogenation-active metal is at least one metal selected from the group consisting of an alkali metal, an element belonging to Group 7 of the periodic table, an element belonging to Group 8 of the periodic table, an element belonging to Group 9 of the periodic table, and an element belonging to Group 10 of the periodic table, and
the catalyst (Y) is a catalyst comprising an oxide of a metal belonging to Group 4 through Group 13 of the periodic table and magnesium oxide.

8. The butadiene production system according to claim 2 ,
wherein the catalyst (Z) is a CO 2 -assimilating bacterium, and
the catalyst (Y) is a catalyst comprising an oxide of a metal belonging to Group 4 through Group 13 of the periodic table and magnesium oxide.

9. The butadiene production method according to claim 4 ,
wherein the catalyst (X) is a hydrogenation-active metal or an aggregate of a hydrogenation-active metal and an auxiliary active metal, wherein the hydrogenation-active metal is at least one metal selected from the group consisting of an alkali metal, an element belonging to Group 7 of the periodic table, an element belonging to Group 8 of the periodic table, an element belonging to Group 9 of the periodic table, and an element belonging to Group 10 of the periodic table, and
the catalyst (Y) is a catalyst comprising an oxide of a metal belonging to Group 4 through Group 13 of the periodic table and magnesium oxide.

10. The butadiene production method according to claim 5 ,
wherein the catalyst (Z) is a CO 2 -assimilating bacterium, and
the catalyst (Y) is a catalyst comprising an oxide of a metal belonging to Group 4 through Group 13 of the periodic table and magnesium oxide.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Koma Satoshi

Classifications

• C10K3/06

  by mixing with gases · CPC title

• B01J23/20

  Vanadium, niobium or tantalum · CPC title

• C01B2203/06

  Integration with other chemical processes · CPC title

• C07C1/20 Primary

  starting from organic compounds containing only oxygen atoms as heteroatoms · CPC title

• C01B3/38

  using catalysts · CPC title