Polymerization reactor

Patent metadata

Field	Value
Publication number	US-10201798-B2
Application number	US-201615557971-A
Country	US
Kind code	B2
Filing date	Mar 17, 2016
Priority date	Mar 17, 2015
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

The present invention relates to a polymerization reactor. The polymerization reactor according to one aspect of the present invention comprises: a housing including a supply part for supplying a reactant; a tube which is provided inside the housing and extends along the height direction of the housing; a first impeller including a blade which spirally surrounds the tube along the height direction of the housing; a second impeller which is provided inside the housing in order to enable the reactant to flow into the tube; and a partition wall which is provided to surround the second impeller along the circumferential direction.

First claim

The invention claimed is:

1. A polymerization reactor comprising
a housing including a supply part for supplying a reactant;
a tube which is provided inside the housing and extends along the height direction of the housing;
a first impeller including a blade which spirally surrounds the tube along the height direction of the housing;
a second impeller which is provided inside the housing in order to enable the reactant to flow into the tube; and
a partition wall which is provided to surround the second impeller along the circumferential direction,
wherein
the second impeller is provided in a lower region of the housing, and
the farther the partition wall is from the tube, the partition wall is provided to have a higher diameter.

2. The polymerization reactor according to claim 1 , wherein
the supply part is provided in the lower region of the housing such that the reactant is fed into the partition wall.

3. The polymerization reactor according to claim 1 , wherein
the partition wall is provided such that an edge having a maximum diameter is spaced from an inner peripheral surface of the housing.

4. The polymerization reactor according to claim 1 , wherein
the partition wall is provided such that its minimum diameter is equal to the diameter of the tube.

5. The polymerization reactor according to claim 1 , wherein
the partition wall is provided such that its center is coaxially located on the center of the tube.

6. The polymerization reactor according to claim 1 , wherein
the partition wall is integrally formed with the tube.

7. The polymerization reactor according to claim 1 , wherein
the first impeller is rotated to form an upward stream of the reactant inside the tube and to form a downward stream of the reactant in a space between the tube and the housing.

8. The polymerization reactor according to claim 1 , wherein
the second impeller is a paddle impeller.

9. The polymerization reactor according to claim 1 , wherein
the first impeller and the second impeller are provided such that each rotational center is coaxially positioned.

10. The polymerization reactor according to claim 9 , wherein
the first impeller and the second impeller are provided such that their rotational speeds are set to be different from each other.

11. The polymerization reactor according to claim 10 , wherein
the rotational speed of the second impeller is set faster than the rotational speed of the first impeller.

12. The polymerization reactor according to claim 9 , wherein
the first impeller and the second impeller are mounted on individual drive axes, respectively.

13. The polymerization reactor according to claim 9 , wherein
the first impeller and the second impeller are mounted on a single drive axis, respectively.

14. The polymerization reactor according to claim 1 , wherein
the height of the first impeller is provided to be equal to the height of the tube.

15. A polymerization reactor comprising
a housing including a supply part for supplying a reactant;
a tube which is provided inside the housing and extends along the height direction of the housing;
a first impeller, including a blade which spirally surrounds the tube along the height direction of the housing, for rotating to form an upward stream of the reactant inside the tube and to form a downward stream of the reactant in a space between the tube and the housing;
a partition wall which is provided in a lower region of the housing to guide the reactant downward streaming from the space between the tube and the housing into the tube; and
a second impeller, which is disposed inside the partition wall, for enabling the reactant to flow into the tube,
wherein
the second impeller is provided in a lower region of the housing, and
the farther the partition wall is from the tube, the partition wall is provided to have a higher diameter.

16. The polymerization reactor according to claim 15 , wherein
the supply part is provided in the lower region of the housing such that the reactant is fed into the partition wall.

17. The polymerization reactor according to claim 15 , wherein
the partition wall is provided such that its minimum diameter is equal to the diameter of the tube, and
the partition wall is provided such that an edge having a maximum diameter is spaced from an inner peripheral surface of the housing.

18. A polymerization reactor comprising
a housing including a supply part for supplying a reactant;
a tube which is provided inside the housing and extends along the height direction of the housing;
a first impeller, including a blade which spirally surrounds the tube along the height direction of the housing, for rotating to form an upward stream of the reactant inside the tube and to form a downward stream of the reactant in a space between the tube and the housing;
a partition wall which is provided in a lower region of the housing to guide the reactant downward streaming from the space between the tube and the housing into the tube; and
a second impeller, which is disposed inside the partition wall, for enabling the reactant to flow into an upper part of the tube and being driven at a rotational speed faster than that of the first impeller,
wherein
the second impeller is provided in a lower region of the housing, and
the farther the partition wall is from the tube, the partition wall is provided to have a higher diameter.

Assignees

• Lg Chemical Ltd

Inventors

• Shin Hyun Jin
• Song Young Soo
• Im Ye Hoon

Classifications

• B01J2219/00164

  controlling the flow · CPC title

• B01J2219/00051

  Controlling the temperature · CPC title

• B01J8/38

  with fluidised bed containing a rotatable device or being subject to rotation {or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it} · CPC title

• C08F2/01

  characterised by special features of the polymerisation apparatus used · CPC title

• B01J8/382

  with a rotatable device only · CPC title