Electrolysis Recombiner Phase Separation Gas Purity
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Solution Overview
Problem
Existing electrolysis systems face challenges in efficiently removing foreign gases, such as hydrogen in oxygen and oxygen in hydrogen, from product gas streams, leading to potential safety hazards and increased costs due to complex and costly downstream cleaning processes.
Innovation Solution
The method involves imparting rotation to the product gas stream to achieve phase separation of water and product gas, followed by supplying the product gas to a catalytically active zone where foreign gases are recombined with the product gas to form water, thereby cleaning the gas stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If downstream gas cleaning steps are used to remove foreign gases from product gas streams, then gas purity is improved, but system complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by implementing recombination-active surfaces directly within the electrolysis cell before the product gas leaves the cell. This prevents foreign gas accumulation in downstream equipment rather than cleaning it afterward, thereby maintaining gas purity while avoiding complex downstream cleaning systems.
Solution Approach 2:
The invention extracts the gas cleaning function from downstream processes and integrates it directly into the electrolysis cell structure. By incorporating recombination-active surfaces within the cell, the cleaning function is performed at the source, eliminating the need for separate complex cleaning equipment downstream.
2Reliability
If cell-internal recombination catalysts are used to produce recombination-active surfaces, then foreign gas removal is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies local quality by creating recombination-active surfaces at specific locations within the electrolysis cell where foreign gas removal is most needed. The recombination catalysts are selectively placed on surfaces exposed to product gas streams, providing targeted foreign gas removal without requiring complex manufacturing of entire cell components.
Solution Approach 2:
The invention changes the surface properties of internal cell components by applying recombination catalysts, transforming ordinary surfaces into recombination-active surfaces. This parameter change enables foreign gas removal through catalytic activity without requiring complex structural modifications to the cell.
3Manufacturing precision
If heating to 80°C or higher is applied to achieve sufficient recombination conversion rates, then gas purity is improved, but energy consumption increases and system efficiency decreases
Solution Approach 1:
The patent applies self-service by utilizing the heat already present in the electrolysis process and the catalytic activity of recombination surfaces to achieve foreign gas removal without additional external heating. The system uses its own operational heat and the inherent catalytic properties to maintain gas purity, avoiding extra energy input for heating.
Solution Approach 2:
The invention changes the approach from thermal-driven recombination to catalyst-driven recombination. By using recombination-active surfaces with appropriate catalytic materials, the process achieves effective foreign gas removal at lower temperatures, fundamentally changing the driving parameter from temperature to catalytic activity and thereby reducing energy consumption.
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
This approach effectively removes foreign gases from the product gas streams, preventing the formation of ignitable mixtures and reducing the risk of explosions, while also simplifying and cost-reducing the gas cleaning process.
Implementation Method 1
a catalytically active zone in which foreign gas is recombined with the product gas to form water
Implementation Method 2
rotation is imparted to at least one product gas stream so as to bring about phase separation of water and product gas in the phase mixture
Data Source
AI summary
Methods for operating an electrolysis system that includes an electrolyzer for generating hydrogen and oxygen as product gases, a product gas flow being formed in a phase mixture including water and a respective product gas with a content of a foreign gas are provided. A rotation is impressed upon at least one product gas flow such that a phase separation of water and product gas is produced in the phase mixture, wherein the product gas is supplied to a catalytically active zone such that foreign gas is recombined with the product gas in order to form water, and after flowing through the catalytically active zone, the product gas released from the foreign gas is mixed with the liquid phase again in order to form a phase mixture.