Hydrogen extraction reactor and hydrogen extraction process using phase change materials

Patent metadata

Field	Value
Publication number	US-11674068-B2
Application number	US-202117195642-A
Country	US
Kind code	B2
Filing date	Mar 9, 2021
Priority date	Nov 25, 2020
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

According to one embodiment of the present invention, there is provided a hydrogen extraction reactor, comprising a chamber including an inner space; a reaction unit which is provided to pass through the inside of the chamber and where an endothermic reaction for hydrogen extraction occurs; a heating unit which is provided to be spaced apart from the reaction unit inside the chamber and transfers heat to the inside of the chamber; and a heat transfer material which is provided between the reaction unit and the heating unit in the chamber, wherein the heat transfer material undergoes a phase transition between a gas phase and a liquid phase according to the entry and exit of heat from the heating unit or the reaction unit.

First claim

The invention claimed is:

1. A hydrogen extraction reactor, comprising:
a chamber including an inner space;
a reaction unit disposed within the inner space of the chamber and where an endothermic reaction for hydrogen extraction occurs;
a heating unit within the inner space of the chamber and spaced apart from the reaction unit; and
a heat transfer material disposed between the reaction unit and the heating unit, wherein the heat transfer material undergoes a phase transition between a gas phase and a liquid phase as heat is provided by the heating unit or used in the endothermic reaction of hydrogen extraction in the reaction unit.

2. The hydrogen extraction reactor of claim 1 , wherein the reaction unit comprises at least one of a methane reforming reaction unit, a methanol reforming reaction unit, an ammonia decomposition reaction unit, a dehydrogenation reaction unit of liquid organic hydrogen carriers, a dehydrogenation reaction unit of formic acid or formate, or a dimethylether reforming reaction unit.

3. The hydrogen extraction reactor of claim 1 , wherein the reaction unit is a dehydrogenation reaction of liquid organic hydrogen carriers, and further comprising a hydrogen separation unit for separating hydrogen from the liquid organic hydrogen carriers positioned at an outlet of the reaction unit.

4. The hydrogen extraction reactor of claim 3 , wherein at least a portion of the hydrogen separated from the hydrogen separation unit is supplied to the heating unit to generate heat by combustion.

5. The hydrogen extraction reactor of claim 1 , wherein the heating unit includes at least one of a combustion device that provides heat by combusting fuel, an electric heating device that provides heat generated from resistance when an electric current is applied, or a heat generating device using induction;
The heating unit includes at least one selected from a combustion device that burns fuel to provide heat, a heat transfer device that provides heat generated from resistance when an electric current flows, a heat generating device using induction, and a combination thereof.

6. The hydrogen extraction reactor of claim 1 , wherein the heat transfer material circulates in the chamber.

7. The hydrogen extraction reactor of claim 1 , wherein the chamber further comprises a pressure control valve to adjust the internal pressure of the chamber, which in turn controls the phase transition temperature of the heat transfer material.

8. The hydrogen extraction reactor of claim 1 , wherein the heat transfer material is a hydrocarbon-based organic material.

9. The hydrogen extraction reactor of claim 8 , wherein the hydrocarbon-based organic material has a gas-liquid phase transition temperature of 150° C. to 400° C.

10. The hydrogen extraction reactor of claim 8 , wherein the hydrocarbon-based organic material comprises monobenzyltoluene, dibenzyltoluene, toluene, mono-C 12-14 -alkyl derivatives, biphenyl, diphenyl oxide, diphenylmethane, naphthalene, or a combination thereof.

11. The hydrogen extraction reactor of claim 9 , further comprising a device to circulate the heat transfer material present in the gas phase and disposed between the reaction unit and the heating unit to a low temperature region within the chamber.

12. A hydrogen extraction process, comprising:
supplying a hydrogen storage material to a reaction unit provided in a chamber;
heating a heat transfer material with a heating unit, and
transferring heat from the heat transfer material to a reaction unit and the hydrogen storage material in the reaction unit, wherein the heat transfer material is a hydrocarbon-based organic material that has a gas-liquid phase transition temperature of 150° C. to 400° C.; and
extracting hydrogen from the hydrogen storage material,
wherein the heat transfer material undergoes a phase transition between a gas phase and a liquid phase to control the temperature of the reaction unit such that the temperature does not deviate from a preset temperature range.

13. The hydrogen extraction process of claim 12 , wherein the preset temperature range is from 150° C. to 400° C.

14. The hydrogen extraction process of claim 12 , further comprising separating the hydrogen extracted from the reaction unit.

Assignees

• Korea Inst Sci & Tech

Inventors

• Jo Young Suk
• Kim Yong Min
• Yoon Chang Won
• Jeong Hyangsoo
• Sohn Hyuntae
• Jang Seong Cheol
• Nam Suk Woo
• Han Jonghee
• Moon Seongeun
• Kwak Yeonsu

Classifications

• C01B2203/085

  by electric heating · CPC title

• C01B3/22

  by decomposition of gaseous or liquid organic compounds · CPC title

• C01B2203/1623

  Adjusting the temperature · CPC title

• H05B7/02

  Details · CPC title

• C01B2203/1628

  Controlling the pressure · CPC title