US-20260124576-A1 - HYDROGEN PURIFICATION SYSTEM AND HYDROGEN PURIFICATION METHOD

US20260124576A1US 20260124576 A1US20260124576 A1US 20260124576A1US-20260124576-A1

Abstract

A hydrogen purification system and a hydrogen purification method are provided. The hydrogen purification system includes a purification device, a water supply device and a hydrogen-containing gas supply device. The purification device includes an anode, a cathode and an electrolyte membrane located between the anode and the cathode. The water supply device is connected to the cathode and provides liquid water to the cathode. The hydrogen-containing gas supply device is connected to the anode to supply hydrogen-containing gas to the anode. During a hydrogen purification process, the liquid water is continuously supplied to the cathode in an uninterrupted manner.

Inventors

Shuan Lin
Sung-Chun Chang
Chien-Ming Lai
Li-Duan Tsai

Assignees

INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Dates

Publication Date: 20260507
Application Date: 20241224
Priority Date: 20241106

Claims (11)

1 . A hydrogen purification system, comprising: a purification device, comprising an anode, a cathode, and an electrolyte membrane located between the anode and the cathode; a water supply device, connected to the cathode and providing liquid water to the cathode; and a hydrogen-containing gas supply device, connected to the anode to supply hydrogen-containing gas to the anode, wherein during a hydrogen purification process, the liquid water is continuously supplied to the cathode in an uninterrupted manner.
2 . The hydrogen purification system according to claim 1 , wherein the liquid water is continuously supplied to the cathode in an uninterrupted manner at a temperature of 10°C to 80°C.
3 . The hydrogen purification system according to claim 1 , wherein under a condition of every 1 L/min hydrogen purification amount, the liquid water is continuously supplied to the cathode in an uninterrupted manner at a flow rate of 0.067 L/min to 0.67 L/min.
4 . The hydrogen purification system according to claim 1 , wherein the cathode comprises a cathode catalyst layer and a cathode gas diffusion layer, the cathode catalyst layer is in contact with the electrolyte membrane, and the cathode gas diffusion layer is in contact with a cathode separator, the cathode separator and the cathode have a cathode flow channel therebetween, the liquid water flows in through a cathode inlet of the cathode separator, and after passing through the cathode flow channel, liquid water and purified hydrogen flow out through a cathode outlet of the cathode separator.
5 . The hydrogen purification system according to claim 4 , further comprising a gas-liquid separation device to separate the liquid water and the purified hydrogen flowing out from the cathode outlet of the cathode separator.
6 . The hydrogen purification system according to claim 4 , further comprising a gas-liquid separation device, wherein after the liquid water flowing out from the cathode outlet of the cathode separator passes through the gas-liquid separation device, it flows through the water supply device to re-enter the cathode inlet of the cathode separator.
7 . The hydrogen purification system according to claim 1 , wherein the anode comprises an anode catalyst layer and an anode gas diffusion layer, the anode catalyst layer is in contact with the electrolyte membrane, and the anode gas diffusion layer is in contact with an anode separator, the anode separator and the anode have an anode flow channel therebetween, the hydrogen-containing gas is introduced through an anode inlet of the anode separator, and after passing through the anode flow channel, hydrogen-containing gas that has not passed through the cathode flows out through an anode outlet of the anode separator.
8 . The hydrogen purification system according to claim 1 , further comprising an alternating current impedance analysis device connected to the purification device to measure an alternating current impedance value of the purification device.
9 . A hydrogen purification method, comprising: using the hydrogen purification system according to claim 1 ; initiating the water supply device to supply the liquid water to the cathode; introducing the hydrogen-containing gas; and performing a hydrogen purification reaction, wherein during a hydrogen purification process, the liquid water is continuously supplied to the cathode in an uninterrupted manner.
10 . The hydrogen purification method according to claim 9 , wherein after starting to supply the liquid water, it is first confirmed that an alternating current impedance value of the purification device has satisfied a predetermined impedance condition, and then the hydrogen-containing gas is introduced.
11 . The hydrogen purification method according to claim 10 , wherein the predetermined impedance condition is that an alternating current impedance value of the purification device is less than a purification set impedance value.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority benefit of Taiwan application serial no. 113142506, filed on November 6, 2024. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of specification. BACKGROUND TECHNICAL FIELD The technical field relates to a hydrogen purification technology, and particularly relates to a hydrogen purification system and a hydrogen purification method. BACKGROUND With the development of technology, net-zero carbon emission has become one of the goals to be achieved in development. For this reason, hydrogen energy is considered as one of the important alternative energy sources. In the semiconductor industry, as advanced manufacturing processes expand, the demand for high-purity hydrogen has increased significantly. In view of this, how to effectively provide hydrogen with high throughput, high recovery rate, and high purity, as well as its recovery and purification technology, has become a current research topic. SUMMARY One of exemplary embodiments comprises a hydrogen purification system including a purification device, a water supply device, and a hydrogen-containing gas supply device. The purification device includes an anode, a cathode, and an electrolyte membrane located between the anode and the cathode. The water supply device is connected to the cathode and provides liquid water to the cathode. The hydrogen-containing gas supply device is connected to the anode to supply hydrogen-containing gas to the anode. During a hydrogen purification process, the liquid water is continuously supplied to the cathode in an uninterrupted manner. One of exemplary embodiments comprises a hydrogen purification method including: using the aforementioned hydrogen purification system; initiating the water supply device to supply liquid water to the cathode; introducing hydrogen-containing gas; and performing the hydrogen purification reaction. During a hydrogen purification process, the liquid water is continuously supplied to the cathode in an uninterrupted manner. To make the features and advantages of the disclosure clearer and easier to understand, the following gives a detailed description of embodiments with reference to accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a hydrogen purification system according to an exemplary embodiment. FIG. 2 is a schematic flow chart of a hydrogen purification method according to an exemplary embodiment. FIG. 3 shows the change in current density measured over time during hydrogen purification using the hydrogen purification system according to Example 1 of the disclosure. FIG. 4 shows the change in current density measured over time during hydrogen purification using the hydrogen purification system according to Comparative Example 1 of the disclosure. FIG. 5 shows the change in current density measured over time during hydrogen purification using the hydrogen purification system according to Comparative Example 2 of the disclosure. DESCRIPTION OF THE EMBODIMENTS The following will comprehensively describe exemplary implementations of the disclosure with reference to the figures, but the disclosure may also be implemented in many different forms and should not be construed as limited to the implementations described herein. In the figures, the sizes and thicknesses of components, parts, and layers may not be drawn to actual scale for clarity. Directional terms mentioned in this document, such as "upper", "lower", "front", "back", etc., are only referenced to the orientation of the accompanying figures. Therefore, the directional terms used are for explaining and understanding this application, and not for limiting this application. Additionally, in the specification, unless explicitly described otherwise, the word "include" will be understood to mean including the stated elements, but not excluding any other elements. For ease of understanding, the same elements in the following description will be explained using the same symbols. The implementation details provided in the implementations are for illustrative purposes and are not intended to limit the scope of protection of the disclosure. Any expert in the relevant technical field may modify or vary these implementation details according to the needs of actual implementation. Moreover, descriptions of well-known devices, methods, and materials may be omitted to avoid obscuring the description of the various principles of the disclosure. Ranges in this document may be expressed from "about" one specific value to "about" another specific value, or may be directly expressed as one specific value and/or to another specific value. When expressing said range, another implementation includes from that one specific value and/or to another specific value. Similarly, when values are expressed as approximations by using the antecedent "about", it will be understood that the sp