Systems and methods for producing high-purity hydrogen
A system for producing high-purity hydrogen from fuel gas streams in steam cracking units using acetylene hydrogenation, chilling, and multi-stage hydrogen expansion effectively separates hydrogen without membrane modules, reducing energy and capital costs.
Patent Information
- Authority / Receiving Office
- GB · GB
- Patent Type
- Applications
- Current Assignee / Owner
- TECHNIP ENERGIES FRANCE SAS
- Filing Date
- 2024-12-23
- Publication Date
- 2026-06-24
AI Technical Summary
The production of high-purity hydrogen from fuel gas streams in steam cracking units is capital and energy intensive due to the need for membrane modules and pressure swing adsorbers, which require high compression power and are costly.
A system comprising an acetylene hydrogenation unit, chilling train, demethanizer tower, and multi-stage hydrogen expansion unit that separates hydrogen without using membrane separation or pressure swing adsorption, utilizing hydrogen and methane expanders to achieve high purity hydrogen and methane streams.
Reduces capital and operating costs by eliminating the need for membrane modules and pressure swing adsorbers, achieving high-purity hydrogen (>98 mole%) with reduced energy requirements and refrigeration credits recovery.
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