Hydrogen Purification Mass Ratio Optimization
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Solution Overview
Problem
Gaseous hydrogen produced by electrolysis and compressed using oil-lubricated compressors often contains impurities like moisture and hydrocarbons, which must be removed to meet high purity standards for applications such as fuel cells, but existing systems face challenges in maintaining efficient and economical operation.
Innovation Solution
A system comprising an inlet, a drying unit with active drying material, an adsorption unit with active adsorption material, and an exit, where the mass ratio between the two materials is optimized between 1.5:1 to 50:1 to ensure continuous operation without saturating the adsorption unit, along with pressure-dew point sensors for real-time quality monitoring and control units to manage saturation limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mass of active adsorption material is increased to maintain operation until drying unit saturation, then the system reliability is improved, but the device complexity and cost increase due to oversizing
Solution Approach 1:
The patent applies parameter changes by optimizing the mass ratio between drying material and adsorption material to a specific range (1.5:1 to 50:1). This parameter optimization ensures that the adsorption unit is sized appropriately to handle the actual moisture load from the drying unit, preventing both undersizing (which would cause premature saturation) and oversizing (which would increase complexity and cost). The controlled change in this mass ratio parameter resolves the contradiction by achieving reliable continuous operation with an optimally sized adsorption unit.
2Productivity
If the mass of active adsorption material is increased to maintain operation until drying unit saturation, then the productivity is improved, but the loss of substance increases due to unnecessary material usage
Solution Approach 1:
The patent optimizes the mass ratio parameter between drying and adsorption materials to achieve efficient material utilization. By setting the ratio within the range of 1.5:1 to 50:1, the system ensures that the adsorption material is fully utilized without being excessive. This parameter optimization allows the system to treat the required gas volume effectively while avoiding waste of adsorption material, thus resolving the contradiction between productivity and substance loss.
Solution Approach 2:
The system achieves self-optimization through the defined mass ratio relationship between drying and adsorption materials. The adsorption unit is sized to naturally handle the moisture output from the drying unit, creating a self-balancing system where materials are used efficiently without requiring external intervention or oversized components. This self-service approach ensures optimal material utilization while maintaining high productivity.
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 effectively removes impurities and maintains hydrogen purity, allowing for continuous operation while avoiding oversizing of adsorption materials, enabling economical and reliable processing of hydrogen to meet stringent standards like DIN EN 17124 and ISO 14687, and providing real-time quality assurance.
Implementation Method 1
a drying unit (30) with an active drying material for removing moisture from the supplied hydrogen
Implementation Method 2
an adsorption unit (50) with an active adsorption material for adsorbing impurities from the dried hydrogen
Data Source
Figure 1A~1B
Figure 2
AI summary
The present invention relates to a system for processing gaseous hydrogen, comprising an inlet (10a) for supplying gaseous hydrogen, a drying unit (30) with an active drying material for removing moisture from the supplied hydrogen, an adsorption unit (50) with an active adsorption material for adsorbing impurities from the dried hydrogen, and an outlet (10b) for extracting processed hydrogen. According to the invention, the mass ratio between the active drying material and the active adsorption material is in the range of 1.5:1 to 50:1. The invention further relates to a system for providing compressed processed gaseous hydrogen, comprising such a system, and a method for processing gaseous hydrogen.