Modular Hydrogen Extraction System for Distributed Natural Gas Networks
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Solution Overview
Problem
Current hydrogen generation systems are not suitable for small-scale use due to their large size, high cost, complexity, and maintenance requirements, making them unsuitable for integration with existing gas networks for distributed hydrogen extraction.
Innovation Solution
A compact and cost-effective hydrogen extraction system comprising a compressor, desulfurization unit, and hydrogen extraction device that can be coupled to existing natural gas networks to extract hydrogen from a gas mixture, allowing for on-site storage and use or supply to fuel cells, along with a monitoring system to track hydrogen and natural gas consumption for accurate pricing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If current hydrogen generation systems are used for hydrogen extraction, then hydrogen production capability is achieved, but system size, cost, and complexity increase significantly
Solution Approach 1:
The hydrogen extraction system is divided into multiple functional modules: a compressor module for gas compression, a desulfurization module for sulfur removal, and a hydrogen separation module. Each module performs a specific function, allowing the system to achieve industrial-scale hydrogen production capability while maintaining a compact, manageable structure suitable for distributed deployment.
Solution Approach 2:
The extraction system is designed to handle multiple gas types (natural gas, biogas, synthetic natural gas) and can be integrated with existing gas distribution networks. The system performs multiple functions including compression, desulfurization, hydrogen extraction, and can optionally include carbon dioxide removal, making it universally applicable to various fuel sources and distribution infrastructures.
2Quantity of substance
If current hydrogen generation systems are used for hydrogen extraction, then hydrogen production capability is achieved, but system cost increases
Solution Approach 1:
By segmenting the system into modular functional units, each component can be optimized independently and manufactured using standard industrial processes. This modularity reduces overall system cost by allowing selective implementation based on specific application requirements and enabling economies of scale in component manufacturing.
Solution Approach 2:
The system operates at parameters compatible with existing gas distribution infrastructure (pressure, temperature, flow rates), eliminating the need for expensive specialized equipment. The compressor operates at pressures suitable for natural gas networks, and the separation process is optimized for the composition of blended gas-hydrogen mixtures, reducing capital and operational costs.
3Quantity of substance
If current hydrogen generation systems are used for hydrogen extraction, then hydrogen production capability is achieved, but maintenance requirements increase
Solution Approach 1:
The modular segmented design allows each functional module to be independently maintained and repaired. If one module requires maintenance, others can continue operating, reducing system downtime and maintenance complexity. Standardized module interfaces facilitate quick replacement and repair operations.
4Adaptability or versatility
If hydrogen is added to existing natural gas networks, then distributed hydrogen delivery is achieved, but sulfur content in the gas mixture increases
Solution Approach 1:
The desulfurization module performs sulfur removal before hydrogen extraction, preventing sulfur from entering the hydrogen product stream or being released to the atmosphere. This preliminary treatment ensures that the hydrogen extracted from sulfur-containing gas mixtures is clean and suitable for various applications, while the desulfurized gas can be safely returned to or distributed through natural gas networks.
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 system enables efficient and cost-effective extraction of hydrogen from natural gas networks for small-scale applications, reducing transportation and storage costs, and allows for accurate monetization of hydrogen usage by separating consumption from natural gas consumption.
Implementation Method 1
a compressor for compressing a gas mixture comprising hydrogen and natural gas
Implementation Method 2
a desulfurization unit for removing at least part of the sulfur contained in the compressed gas mixture
Implementation Method 3
a hydrogen extraction device for extracting at least part of the hydrogen contained in the reduced-sulfur gas mixture
Data Source
AI summary
A hydrogen extraction system is provided. The extraction system can comprise a compressor for compressing a gas mixture comprising hydrogen and a desulfurization unit for receiving the compressed gas mixture. The system can also comprise a hydrogen-extraction device for receiving a reduced-sulfur gas mixture and a hydrogen storage device for receiving an extracted hydrogen gas. A method of extracting hydrogen from a gas mixture comprising natural gas and hydrogen, and a method of determining an energy price are also provided.