Hydrogen production equipment

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The hydrogen production apparatus addresses inefficiencies in ammonia-based hydrogen production by using a plasma reactor and controlled ammonia and oxygen supply paths to ensure efficient combustion and decomposition, enhancing hydrogen yield.

JP2026111226APending Publication Date: 2026-07-03DAIHATSU MOTOR CO LTD

Patent Information

Authority / Receiving Office: JP · JP
Patent Type: Applications
Current Assignee / Owner: DAIHATSU MOTOR CO LTD
Filing Date: 2024-12-23
Publication Date: 2026-07-03

AI Technical Summary

Technical Problem

Existing methods for producing hydrogen from ammonia using catalysts face inefficiencies due to inhibited catalytic activity from ammonia adsorption, leading to insufficient combustion and reduced hydrogen production.

Method used

A hydrogen production apparatus with a specific configuration that includes a plasma reactor, multiple ammonia supply paths, a catalyst unit with a combustion catalyst positioned upstream of an ammonia decomposition catalyst, and control valves to manage oxygen and ammonia flow, ensuring efficient combustion and decomposition.

Benefits of technology

The apparatus enhances hydrogen production efficiency by allowing sufficient combustion and increased ammonia decomposition, suppressing catalyst oxidation, and optimizing ammonia supply, resulting in improved hydrogen yield.

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Abstract

To provide a hydrogen production apparatus that produces hydrogen more efficiently. [Solution] The hydrogen production apparatus 1 comprises an ammonia supply path 11, a plasma reactor 3, a mixture supply path 12, an oxygen supply path 13, and a catalyst unit 5. The ammonia supply path 11 includes a first ammonia supply path 11a that supplies ammonia to the plasma reactor 3. The plasma reactor 3 decomposes ammonia into hydrogen and nitrogen. The mixture supply path 12 supplies a mixture containing hydrogen, nitrogen, and undecomposed ammonia supplied from the plasma reactor 3 to the catalyst unit 5. The oxygen supply path 13 supplies oxygen to the catalyst unit 5. The catalyst unit 5 comprises a combustion catalyst 51 for burning hydrogen and oxygen, and an ammonia decomposition catalyst 52 for decomposing ammonia into hydrogen and nitrogen. The combustion catalyst 51 is positioned upstream of the ammonia decomposition catalyst 52 in the ammonia supply direction and generates heat by adsorbing oxygen.

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