Reactor for non-oxidative direct conversion of methane and method of manufacturing ethylene and aromatic compound using same

Patent metadata

Field	Value
Publication number	US-11028026-B2
Application number	US-201916667936-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Jan 31, 2019
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

The present invention relates to a reactor for non-oxidative direct conversion of methane and a method of manufacturing ethylene and an aromatic compound using the same. More particularly, the present invention relates to a reactor for non-oxidative direct conversion of methane in which a catalytic reaction velocity is maximized, the production of coke is minimized, and a high conversion rate of methane and a high yield of ethylene and an aromatic compound are ensured when ethylene and the aromatic compound are manufactured from methane, and a method of manufacturing ethylene and an aromatic compound using the same.

First claim

What is claimed is:

1. A reactor for non-oxidative direct conversion of methane, the reactor comprising:
an introduction unit for introducing a methane-containing feed;
a reaction unit for reacting the methane-containing feed introduced through the introduction unit to produce a product containing ethylene and an aromatic compound; and
a discharge unit for discharging the product containing the ethylene and the aromatic compound produced in the reaction unit,
wherein the reaction unit includes a first reaction region unit, for reacting the methane-containing feed introduced through the introduction unit to produce acetylene, and a second reaction region unit, for hydrogenating the acetylene produced in the first reaction region unit to produce the ethylene and the aromatic compound, and the second reaction region unit is provided with a hydrogen supply tube which is coaxially disposed in the reactor and which is hollow so that hydrogen is supplied through the hydrogen supply tube in the direction of the discharge unit towards the introduction unit,
wherein the reactor for non-oxidative direct conversion of methane includes a second reaction region catalyst in a reactor inner circumferential surface or in the hydrogen supply tube of the second reaction region unit.

2. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein the second reaction region catalyst includes one or more elements selected from the group consisting of iron, chromium, nickel, molybdenum, and manganese.

3. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein a ratio of a mean residence time in the second reaction region unit to a mean residence time in the first reaction region unit in the reactor is 0.01 to 1.5.

4. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein a ratio of a superficial velocity in the second reaction region unit to a superficial velocity in the first reaction region unit in the reactor for non-oxidative direct conversion of methane is 1 to 30.

5. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein a space velocity of the second reaction region unit is 800 to 20,000 cm 3 gcat −1 h −1 .

6. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein a reaction is performed at 900 to 2,000° C. under 0.1 to 10 bar in the first reaction region unit.

7. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein the hydrogenating is performed at 500 to 1,300° C. under 0.1 to 10 bar in the second reaction region unit.

8. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein a reactor inner circumferential surface of the first reaction region unit is coated with a first reaction catalyst containing Si x N y O z (x=1 to 3, y=4 or less, z=2 or less).

9. The reactor for non-oxidative direct conversion of methane of claim 1 , wherein a ratio of a surface area of the second reaction region catalyst to a reactor volume of the second reaction region unit is 1 to 10 cm′.

10. A method of manufacturing ethylene and an aromatic compound from methane comprising performing non-oxidative direct conversion of methane in the reactor of claim 1 .

Assignees

• Korea Res Inst Chemical Tech

Inventors

• Kim Yong Tae
• Lee Sung Woo
• Han Seung Ju
• Kim Seok Ki
• Kim Hyun Woo

Classifications

• B01J27/24

  Nitrogen compounds · CPC title

• C07C2523/745

  Iron · CPC title

• C07C2523/26

  Chromium · CPC title

• B01J19/243 Primary

  spirally, concentrically or zigzag wound · CPC title

• C07C2523/755

  Nickel · CPC title