Process optimization for constant and efficient green ammonia production
A syngas recycle loop with an inlet guide vane compressor and turbo expander simplifies hydrogen compressor design and enhances energy efficiency in green ammonia production, addressing the complexity of high-pressure hydrogen compression.
WO2026114788A1PCT designated stage Publication Date: 2026-06-04NUOVO PIGNONE TECH SRL
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- NUOVO PIGNONE TECH SRL
- Filing Date
- 2025-11-21
- Publication Date
- 2026-06-04
AI Technical Summary
Technical Problem
The challenge of compressing hydrogen from ambient pressure to high pressures required for ammonia synthesis in green ammonia production systems is complex, necessitating numerous compressor stages and high rotational speeds, which poses design and operational challenges.
Method used
A syngas recycle loop system with an inlet guide vane compressor and turbo expander is introduced, allowing for efficient syngas recycling and energy recovery, stabilizing syngas flow to the ammonia converter, and reducing the need for redundant backup systems.
Benefits of technology
The system simplifies hydrogen compressor design, enhances energy efficiency, and provides stable syngas flow, even in renewable energy environments with intermittent power supplies.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2025083926_04062026_PF_FP_ABST
Abstract
The ammonia production system comprises a syngas compressor upstream from the ammonia synthesis module includes an ammonia reactor. The ammonia reactor is fluidly coupled to the chiller which is in fluid communication with a carbon dioxide scrubber. The scrubber removes unreacted syngas. The unreacted syngas is recycled through a IGV controlled recycle compressor using a fixed speed driver. The delivery side of the recycle compressor is in fluid communication with the ammonia reactor. A portion of the recycle stream is delivery through an expander to the syngas make up compressor.
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