Hydrogen Compressing Assembly for Multi-Stage Pressure Boost
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Solution Overview
Problem
Current hydrogen production technologies, such as steam-reforming, are not environmentally friendly due to carbon dioxide emissions and have high operational costs, and hydrogen, being a light molecule, is difficult to transport efficiently at ambient pressures.
Innovation Solution
A hydrogen production plant using electrolysis combined with a compressing assembly comprising centrifugal and integrally geared centrifugal compressors, including barrel compressors and variable/fixed speed electric motors, to increase hydrogen pressure from ambient to 30-40 bars, reducing environmental impact and operational footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If steam-reforming process is used to produce hydrogen, then hydrogen production efficiency is improved, but environmental harm increases due to carbon dioxide emissions
Solution Approach 1:
The patent replaces the thermal-chemical steam-reforming process with an electrolysis-based system that uses electrical energy to split water into hydrogen and oxygen. This substitution eliminates the need for methane combustion and associated CO2 emissions while maintaining high hydrogen production efficiency through advanced electrolyzer technology and optimized compression systems.
2Use of energy by moving object
If hydrogen is transported at ambient pressure, then energy consumption is reduced, but transport efficiency deteriorates due to hydrogen's light molecular weight
Solution Approach 1:
The patent employs a multi-stage compression system that progressively increases hydrogen pressure from ambient levels to high-pressure transport conditions (30-40 bars). This parameter change in pressure enables efficient hydrogen transport through pipelines while minimizing energy consumption through optimized compression staging and intercooling, avoiding the inefficiencies of both ambient pressure transport and excessive pressurization.
3Productivity
If high-pressure compression is applied to hydrogen, then transport efficiency is improved, but device complexity increases
Solution Approach 1:
The patent divides the hydrogen compression process into multiple stages, each handled by dedicated compression units with specific pressure ratios. This segmentation allows each stage to operate at optimal efficiency points, simplifies the design of individual compressors, enables intermediate cooling between stages to reduce thermal effects, and facilitates modular construction and maintenance while achieving the required high-pressure output for efficient transport.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables efficient, high-pressure hydrogen production with reduced environmental impact and operational costs, allowing for compact and reliable hydrogen transport and use in industrial applications.
Implementation Method 1
the subject matter disclosed herein concerns a plant for producing hydrogen by electrolysis
Implementation Method 2
compressing the hydrogen by at least one centrifugal compressor
Implementation Method 3
at least one compression unit of integrally geared centrifugal compressor type
Data Source
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AI summary
A hydrogen production plant, to produce hydrogen having a compressing assembly, for increasing the pressure of the hydrogen. The compressing assembly has at least one barrel compressor and at least one integrally geared centrifugal compressor. Also disclosed are methods of compressing hydrogen.