System for producing 1,3-butadiene and method of producing 1,3-butadiene using the system

Patent metadata

Field	Value
Publication number	US-11078135-B2
Application number	US-201916707384-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Dec 10, 2018
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

One aspect of the present disclosure provides a system for producing 1,3-butadiene, which includes: a first supply unit, by which a first feed including a butene raw material, oxygen and steam is supplied; a second supply unit, by which a second feed including a butene raw material and oxygen is supplied; and a reaction unit, which includes a catalyst fixed bed and in which an oxidative dehydrogenation reaction takes place, wherein the first supply unit is connected to a front end of the reaction unit, and the second supply unit is connected to an intermediate end of the reaction unit.

First claim

What is claimed is:

1. A system for producing 1,3-butadiene, the system comprising:
a first supply unit configured to supply a first feed including a butene raw material, oxygen and steam;
a second supply unit configured to supply a second feed including a butene raw material and oxygen; and
a reaction unit, which includes a catalyst fixed bed and in which an oxidative dehydrogenation reaction is to be taken place,
wherein the first supply unit is connected to a front end of the reaction unit, and the second supply unit is connected to an intermediate end of the reaction unit, and
wherein the first feed supplied by the first supply unit includes the butene raw material in an amount of 40% to 90% by volume relative to a total amount of the butene raw material supplied to the system.

2. The system of claim 1 , wherein of the second supply unit has a plurality of supply units.

3. The system of claim 1 , wherein the second supply unit is connected to a point located at 25% to 75% in a length from the front end of the reaction unit.

4. The system of claim 1 , wherein the catalyst fixed bed is a coated catalyst including an inert support, an intermediate, and a catalyst component.

5. The system of claim 4 , wherein the catalyst fixed bed includes:
a molded body (i), which includes a carrier coated with a catalyst mixture including a catalyst powder, an organic binder, an inorganic binder and water mixed at a weight ratio of 1.0:0.01 to 0.1:0.02 to 0.2:1.0 to 3.0; or
a molded body (ii), which is formed by extrusion-molding a catalyst mixture including a catalyst powder, an organic binder, an inorganic binder and water mixed at a weight ratio of 1.0:0.01 to 0.1:0.02 to 0.2:0.02 to 0.2.

6. The system of claim 1 , wherein the first supply unit is configured to supply the first feed including the butene raw material, an amount of which is 40% to 90% by volume relative to a total amount of the butene raw material supplied to the system.

7. The system of claim 1 , wherein the first and second supply units are configured to respectively supply the first feed and the second feed, respectively including the butene raw material and the oxygen in a volume ratio of 1:0.5 to 1.2.

8. The system of claim 1 , wherein the first supply unit is configured to supply the first feed including the steam, an amount of which is 500% to 1,500% by volume relative to a total amount of the butene raw material supplied to the system.

9. A method for producing 1,3-butadiene in a system, the method comprising:
supplying, by a first supply unit, a first feed including a butene raw material, oxygen and steam:
supplying, by a second supply unit, a second feed including a butene raw material and oxygen; and
allowing an oxidative dehydrogenation reaction to take place in a reaction unit including a catalyst fixed bed,
wherein the first supply unit is connected to a front end of the reaction unit, and the second supply unit is connected to an intermediate end of the reaction unit, and
wherein the first feed supplied by the first supply unit includes the butene raw material in an amount of 40% to 90% by volume relative to a total amount of the butene raw material supplied to the system.

10. The method of claim 9 , wherein the butene raw material is converted at a rate of 70% or more.

11. The method of claim 9 , wherein the 1,3-butadiene is produced with a yield of 60% or more.

Assignees

• Korea Kumho Petrochemical Co Ltd

Inventors

• Row Kyoung Ho
• Yun Yong Hee
• Park Jin Woo
• Kim Jae Woo

Classifications

• C07C5/48 Primary

  with oxygen as an acceptor · CPC title

• B01J8/0278

  Feeding reactive fluids (for solid material B01J8/0015) · CPC title

• B01J2208/021

  comprising a plurality of beds with flow of reactants in parallel · CPC title

• B01J2219/2428

  Catalysts coated on the surface of the monolith channels · CPC title

• C07C5/322

  with metal oxides or metal sulfides · CPC title