Process for producing hydrogen-containing decomposition gas products
JP2026517556APending Publication Date: 2026-06-02LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
- Filing Date
- 2024-05-15
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing ammonia decomposition processes face challenges with high energy consumption, unconverted ammonia loss, and flame stability issues due to the slow laminar flame speed of ammonia, leading to incomplete combustion and increased CO2 footprint.
Method used
A process involving a two-stage ammonia decomposition where unconverted ammonia is separated and recycled in a secondary reactor, using hydrogen-enriched fuel gas for combustion to heat the primary reaction, reducing energy consumption and stabilizing the flame.
Benefits of technology
This approach minimizes ammonia loss, reduces fuel consumption, and achieves stable combustion with a higher hydrogen yield, lowering the CO2 footprint and NOx emissions.
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Smart Images
Figure 2026517556000001_ABST
Abstract
The proposed invention relates to a process (100) for producing a hydrogen-containing decomposition gas product from an endothermic decomposition reaction of an ammonia feedstock stream, comprising: a step of carrying out a secondary endothermic decomposition conversion (104) of the remaining unconverted portion of ammonia into a hydrogen-enriched fuel gas in a secondary reactor; a step (105) of redirecting the hydrogen-enriched fuel gas to a fuel device, particularly equipped with a burner, configured to carry out a combustion reaction (111) of the hydrogen-enriched fuel gas together with a potentially additional fuel gas stream; and a step (112) of heating the primary endothermic decomposition conversion with the heat provided by the combustion reaction.
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