Continuous tubular reactor and method of operating the same

Patent metadata

Field	Value
Publication number	US-11358114-B2
Application number	US-202016834173-A
Country	US
Kind code	B2
Filing date	Mar 30, 2020
Priority date	Jan 7, 2020
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A continuous tubular reactor includes a rotary reaction tube having a reactant inlet and a product outlet, and including a ceramic; a heating device disposed outside the rotary reaction tube; and an angle adjuster adjusting an angle of a rotation axis of the rotary reaction tube. The angle of the rotation axis is 75° or less with respect to a horizontal surface.

First claim

What is claimed is:

1. A continuous tubular reactor, comprising:
a rotary reaction tube having a reactant inlet and a product outlet, and containing a ceramic;
a heating device disposed outside the rotary reaction tube;
a metered dose connected to the reactant inlet; and
an angle adjuster adjusting an angle of a rotation axis of the rotary reaction tube relative to a reference and moving the metered dose relative to said reference.

2. The continuous tubular reactor of claim 1 , wherein the angle of the rotation axis is 75° or less with respect to a horizontal surface.

3. The continuous tubular reactor of claim 1 , wherein the rotary reaction tube comprises one or more selected from a group consisting of an oxide-based ceramic, a nitride-based ceramic, a carbide-based ceramic, a fluoride-based ceramic and a boride-based ceramic.

4. The continuous tubular reactor of claim 1 , wherein a blade is disposed on an inner wall of the rotary reaction tube.

5. The continuous tubular reactor of claim 4 , wherein a ratio (h/r) of a height h of the blade to a radius r of an inner diameter of the rotary reaction tube is in a range of 0.01 or more and 0.5 or less.

6. The continuous tubular reactor of claim 4 , wherein the blade is disposed in a direction parallel to a rotation axis of the rotary reaction tube.

7. The continuous tubular reactor of claim 4 , wherein the blade is disposed in a direction perpendicular to a rotation axis of the rotary reaction tube.

8. The continuous tubular reactor of claim 4 , wherein the blade is disposed in a spiral direction with respect to a rotation axis of the rotary reaction tube.

9. The continuous tubular reactor of claim 1 , wherein a plurality of blades are disposed on an inner wall of the rotary reaction tube.

10. The continuous tubular reactor of claim 9 , wherein the plurality of blades are disposed while rotated by 30° to 180° in a direction from the reactant inlet to the product outlet.

11. The continuous tubular reactor of claim 4 , wherein the blade comprises one or more selected from a group consisting of an oxide-based ceramic, a nitride-based ceramic, a carbide-based ceramic, a fluoride-based ceramic and a boride-based ceramic.

12. The continuous tubular reactor of claim 1 , wherein an inner wall of the rotary reaction tube comprises one or more selected from a group consisting of an oxide-based ceramic, a nitride-based ceramic, a carbide-based ceramic, a fluoride-based ceramic and a boride-based ceramic.

13. The continuous tubular reactor of claim 1 , wherein an inner wall of the rotary reaction tube comprises quartz.

14. The continuous tubular reactor of claim 1 , wherein the heating device surrounds the rotary reaction tube.

15. The continuous tubular reactor of claim 1 , further comprising a gas adjusting device configured to adjust an inside of the rotary reaction tube to an atmosphere of nitrogen (N 2 ), oxygen (O 2 ), hydrogen (H 2 ), water vapor (H 2 O) and/or inert gas, or to a vacuum.

16. The continuous tubular reactor of claim 1 , wherein a raw material flowing into the reactant inlet comprises barium (Ba), titanium (Ti), calcium (Ca), strontium (Sr), zirconium (Zr), oxides of lead (Pb), carbonates and/or mixtures thereof.

17. The continuous tubular reactor of claim 1 , wherein a product flowing out to the product outlet is at least one or more of (Ba 1-x Ca x ) m (Ti 1-y Zr y )O 3 , PbTiO 3 or SrTiO 3 (0≤x≤1, 0.995≤m≤1.010, 0≤y≤1).

18. A method, comprising an operation of:
heat treating a reactive material using the continuous tubular reactor of claim 1 .

19. The method of claim 18 , further comprising operations of:
providing, at the reactant inlet, the reactive material comprising barium (Ba), titanium (Ti), calcium (Ca), strontium (Sr), zirconium (Zr), oxides of lead (Pb), carbonates and/or mixtures thereof, while rotating and heating the rotary reaction tube; and
receiving, at the product outlet, a product comprising one or more of (Ba 1-x Ca x ) m (Ti 1-y Zr y )O 3 , PbTiO 3 or SrTiO 3 (0≤x≤1, 0.995≤m≤1.010, 0≤y≤1), while rotating and heating the rotary reaction tube.

Assignees

• Samsung Electro Mech

Inventors

• Baek Changyeon
• Jung Won Sik
• Kim Jin Seong
• Kim Hyojin
• Hyun Gahee

Classifications

• B01J2219/00033

  Continuous processes · CPC title

• B01J2219/0263

  Ceramic · CPC title

• C01G23/006

  Alkaline earth titanates · CPC title

• B01J2219/00768

  vertical · CPC title

• B01J2208/00442

  Microwaves · CPC title