Reactor, hydrogen production apparatus, and hydrogen production method

JP7833614B2Active Publication Date: 2026-03-19MITSUBISHI KAKOKI KAISHA LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2026-03-19

AI Technical Summary

Technical Problem

Existing ammonia gas reforming apparatuses require preheating to over 200°C for oxidative decomposition, leading to decreased hydrogen yield and thermal efficiency, especially in small to medium-sized generators with frequent load fluctuations and DSS cycles, necessitating a compact and rapid-response reactor design.

Method used

A reactor design with a first catalyst unit for combustible gas combustion and a second catalyst unit for ammonia reforming, utilizing a platinum catalyst and an NH3·ATR catalyst, with an oxygen supply unit and gas component analyzer to control hydrogen production, allowing for rapid response without heating to 200°C.

Benefits of technology

Enables a highly thermally efficient and rapid response to load fluctuations and startup/shutdown cycles, enhancing hydrogen yield and thermal efficiency in small to medium-sized generators.

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Abstract

[Problem] To provide a reactor capable of suppressing damage to a housing caused by heat. [Solution] A reactor 10 comprises: a housing 1 including an introduction port 2 for introducing ammonia and a combustible gas, and an outlet 3 for causing the generated gas to flow out; a first catalyst part 13 disposed inside the housing 1 and including a first catalyst for generating heat by burning the combustible gas introduced from the introduction port 2; and a second catalyst part 21 disposed between the first catalyst part 13 and the outlet 3, including a second catalyst heated by heat generated in the first catalyst part 13, and generating hydrogen from ammonia.
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Citation Information

Patent Citations

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