Hydrogen production system and hydrogen production method

The hydrogen production system addresses the challenge of recycling iron nitride by using controlled denitrification treatment, enhancing ammonia decomposition efficiency and reducing costs through efficient catalyst recycling.

WO2026134881A1PCT designated stage Publication Date: 2026-06-25POSCO HLDG INC +1

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
POSCO HLDG INC
Filing Date
2025-12-03
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing hydrogen production systems using iron-based catalysts face challenges in recycling iron nitride formed during ammonia decomposition, leading to inefficiencies and increased costs.

Method used

A hydrogen production system and method that includes a hydrogen production device configured to produce hydrogen by contacting a first gas containing ammonia with a first reduced iron, and a reduced iron regeneration device to denitrify the second reduced iron using a reducing gas, with controlled denitrification treatment time and temperature to achieve efficient recycling.

Benefits of technology

The system enables effective recycling of iron-based catalysts, improving ammonia decomposition efficiency and reducing operational costs by minimizing nitrogen content and optimizing denitrification treatment.

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Abstract

According to exemplary embodiments of the present invention, a hydrogen production system and a hydrogen production method may be provided, in which an iron-based catalyst that was used in an ammonia decomposition reaction may be easily recycled.
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