A single-pass multi-pass cyclic hydrogen production system and method using a spiral electrode

The single-pass multi-pass cycle hydrogen production system using spiral electrodes solves the problems of insufficient electric field strength in traditional electrode structures and resource waste in single-pass operation mode, achieving efficient and stable hydrogen production and energy efficiency improvement. It is suitable for plasma catalytic ammonia decomposition hydrogen production technology.

CN121847034BActive Publication Date: 2026-07-17HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Filing Date
2026-01-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing ammonia decomposition hydrogen production systems, the electric field strength of traditional electrode structures is insufficient, the efficiency of active species generation is low, the catalyst stability is poor, the single-pass operation mode results in serious resource waste, and unreacted gases are directly emitted, leading to low conversion rate and high energy consumption.

Method used

The single-pass multi-pass circulation mode hydrogen production system using spiral electrodes includes a spiral ground electrode plasma catalytic membrane reactor and a gas circulation mode switching unit. Through a coaxial multi-layer sleeve structure design, combined with a dielectric barrier discharge plasma activation and catalytic separation composite core unit, the plasma activation zone, catalytic decomposition zone and hydrogen permeation separation zone are serially partitioned. The single-pass and multi-pass modes can be flexibly switched by switching the feed and tail gas mode selection valves.

Benefits of technology

It significantly improves plasma activation efficiency, protects catalyst stability, enables real-time hydrogen separation and multiple gas recycling, reduces raw material consumption and energy consumption, and improves hydrogen production conversion rate and energy efficiency.

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Abstract

This invention belongs to the field of plasma catalytic ammonia decomposition hydrogen production technology, specifically disclosing a single-pass multi-pass circulation mode hydrogen production system and method using a spiral electrode. The system includes a spiral ground electrode plasma catalytic membrane reactor, a gas circulation mode switching unit, and a central control system. The spiral ground electrode plasma catalytic membrane reactor adopts a coaxial multi-layer sleeve structure and includes, from the outside in, a pressure-bearing insulating unit, a dielectric barrier discharge plasma activation unit, and a catalytic separation composite core unit. This invention, employing the aforementioned single-pass multi-pass circulation mode hydrogen production system and method using a spiral electrode, not only achieves efficient hydrogen production in single-pass mode but also, in multi-pass mode, significantly reduces raw material consumption and improves energy efficiency within the same operating time through multiple gas recycling, thereby enhancing its economic viability and sustainability.
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