Apparatus for preparing oligomer

Patent metadata

Field	Value
Publication number	US-11904291-B2
Application number	US-202117629359-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Sep 22, 2020
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

The present disclosure relates to an apparatus for preparing an oligomer, and more particularly, to an apparatus for preparing an oligomer including: a reactor including a gaseous area having a first gaseous reactant inlet provided at a lower portion thereof, and a reaction area in which a reaction medium reacts with the gaseous reactant above the gaseous area; a second gaseous reactant inlet provided on an inner wall of the reactor in the gaseous area and a third gaseous reactant inlet provided on an inner wall of the reactor facing the second gaseous reactant inlet; and a first injection nozzle connected to the second gaseous reactant inlet and a second injection nozzle connected to the third gaseous reactant inlet.

First claim

The invention claimed is:

1. An apparatus for preparing an oligomer, comprising:
a reactor including a gaseous area having a first gaseous reactant inlet provided at a lower portion thereof, and a reaction area in which a reaction medium contacts with a gaseous reactant above the gaseous area;
a second gaseous reactant inlet provided on an inner wall of the reactor in the gaseous area and a third gaseous reactant inlet provided on an inner wall of the reactor facing the second gaseous reactant inlet;
a first injection nozzle connected to the second gaseous reactant inlet and a second injection nozzle connected to the third gaseous reactant inlet, and
a porous dispersion plate provided between the gaseous area and the reaction area.

2. The apparatus for preparing an oligomer of claim 1 , further comprising:
a first gaseous reactant supply line connected to the first gaseous reactant inlet;
a second gaseous reactant supply line branched from the first gaseous reactant supply line and connected to the second gaseous reactant inlet and a third gaseous reactant supply line branched from the first gaseous reactant supply line and connected to the third gaseous reactant inlet; and
first, second, and third flow rate control devices provided in the first, second, and third gaseous reactant supply lines, respectively.

3. The apparatus for preparing an oligomer of claim 1 , wherein the reaction medium is in a liquid state.

4. The apparatus for preparing an oligomer of claim 1 , wherein the first gaseous reactant inlet is positioned in the center of a lower part of the reactor.

5. The apparatus for preparing an oligomer of claim 1 , further comprising a first deflector and a second deflector each provided on the inner wall of the reactor above the second gaseous reactant inlet and the third gaseous reactant inlet, respectively.

6. The apparatus for preparing an oligomer of claim 1 , wherein an injection angle of the gaseous reactant injected from the first injection nozzle and the second injection nozzle is 40 to 50° in a downward direction of the reactor.

7. The apparatus for preparing an oligomer of claim 1 , wherein a height of the gaseous area is 70 to 90% relative to a diameter of the reactor.

8. The apparatus for preparing an oligomer of claim 1 , further comprising:
a reaction medium supply line for supplying the reaction medium to the reaction area;
a product discharge line for discharging a product from the reaction area; and
an unreacted vapor discharge line for discharging unreacted vapors from the reactor.

9. The apparatus for preparing an oligomer of claim 1 , wherein the gaseous reactant includes ethylene, and the oligomer includes an α-olefin.

10. A method for preparing an oligomer using the apparatus of claim 2 , the method comprising:
supplying a gaseous reactant to the gaseous area through the second and third gaseous reactant supply lines by closing the first flow rate control device and opening second and third flow rate control devices when the first gaseous reactant inlet is blocked.

11. The method of claim 10 , wherein each of ratios of flow rates of the gaseous reactants supplied to the gaseous area through the second gaseous reactant supply line and the third gaseous reactant supply line is 40 to 60% with respect to the total flow rate of the gaseous reactant supplied to the first gaseous reactant supply line.

Assignees

• Lg Chemical Ltd

Inventors

• Hwang Moon Sub
• Sun min ho
• Song Jong Hun
• Youk Kyung Seog
• Lee Jeong Seok
• Lee Hong Min

Classifications

• B01J19/26 Primary

  Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles · CPC title

• B01J4/002

  Nozzle-type elements (nozzle-type reactors B01J19/26) · CPC title

• B01J10/00

  Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor (B01J19/08 takes precedence; separation, e.g. distillation, also combined with chemical reactions B01D, {e.g. B01D3/009}) · CPC title

• C07C2/08

  Catalytic processes · CPC title

• B01J2204/002

  the feeding side being of particular interest · CPC title