Hydrogen extraction reactor and hydrogen extraction process using phase change materials

Patent metadata

Field	Value
Publication number	US-2022162490-A1
Application number	US-202117195642-A
Country	US
Kind code	A1
Filing date	Mar 9, 2021
Priority date	Nov 25, 2020
Publication date	May 26, 2022
Grant date	—

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

1 . 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 inside the chamber, wherein the heat transfer material undergoes a phase transition between a gas phase and a liquid phase according to the heat entering or leaving from the heating unit or the reaction unit.

2 . The hydrogen extraction reactor of claim 1 , wherein the endothermic reaction which occurs in the reaction unit comprises at least one selected from the group consisting of a reforming reaction of methane, a reforming reaction of methanol, decomposition reaction of ammonia, a dehydrogenation reaction of liquid organic hydrogen carriers (LOHCs), a dehydrogenation reaction of formic acid or formate, a reforming reaction of dimethylether, and a combination thereof.

3 . The hydrogen extraction reactor of claim 2 , wherein the endothermic reaction which occurs in the reaction unit is a dehydrogenation reaction of liquid organic hydrogen carriers, and a hydrogen separation unit for separating hydrogen from the liquid organic hydrogen carriers is further provided 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 and combusted.

5 . The hydrogen extraction reactor of claim 1 , wherein the heating unit includes at least one selected from a combustion device that provides heat by combusting fuel, an electric heating 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 capable of controlling the internal pressure of the chamber, and controls the phase transition temperature of the heat transfer material by controlling the pressure control valve.

8 . A hydrogen extraction process, comprising:
a first step of supplying a hydrogen storage material to a reaction unit provided in the chamber; a second step of transferring heat to a heat transfer material provided in the chamber using a heating unit provided in the chamber; a third step of transferring heat from the heat transfer material to the reaction unit and the hydrogen storage material in the reaction unit; and a fourth step of performing hydrogen extraction reaction of releasing hydrogen from the hydrogen storage material using the transferred heat, wherein during the second to fourth steps, the heat transfer material undergoes a phase transition between a gas phase and a liquid phase so as to control the temperature inside the chamber such that it does not deviate from the preset temperature range.

9 . The hydrogen extraction process of claim 8 , wherein the preset temperature range is from 150° C. to 400° C.

10 . The hydrogen extraction process of claim 8 , further comprising a fifth step of 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

• C01B3/02 Primary

  Production of hydrogen; Production of gaseous mixtures containing hydrogen · CPC title

• C01B2203/0811

  by combustion of fuel · CPC title

• C01B3/24

  of hydrocarbons · CPC title

• C09K5/00

  Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion · CPC title

• C01B2203/1623

  Adjusting the temperature · CPC title