Hydrogen Membrane Purification Layout for Leak-Aware Gas Separation
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Solution Overview
Problem
Existing hydrogen generation systems produce mixed gas streams containing hydrogen gas along with impurities, which need to be purified to enhance hydrogen purity for applications like energy production in electrochemical fuel cells.
Innovation Solution
The use of hydrogen-selective membranes in a pressure-driven separation process within a sealed pressure vessel to separate mixed gas streams into a product stream with higher hydrogen concentration and a byproduct stream, utilizing materials like palladium and palladium alloys to facilitate hydrogen permeation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hydrogen-selective membranes are used to separate hydrogen from impurities, then hydrogen purity is improved, but the complexity of the purification device increases
Solution Approach 1:
The patent employs hydrogen-selective membranes as thin film structures that selectively permeate hydrogen while blocking impurities. These membranes are integrated into a pressure vessel configuration, creating a compact purification system that achieves high hydrogen purity without excessive complexity
Solution Approach 2:
The invention uses composite membrane structures combining hydrogen-selective materials with support layers. This composite approach enhances the mechanical strength and selectivity of the membranes while maintaining a relatively simple device architecture suitable for practical deployment
2Manufacturing precision
If pressure-driven separation process is used with hydrogen-selective membranes, then hydrogen purity is improved, but the energy consumption increases
Solution Approach 1:
The pressure-driven separation process utilizes the inherent pressure differential between the feed side and permeate side of the membrane. The system leverages the natural tendency of hydrogen to permeate through the selective membrane under pressure, minimizing the need for additional energy input beyond what is required to maintain the pressure gradient
Solution Approach 2:
The invention optimizes operating parameters such as pressure, temperature, and pressure differential across the membrane to maximize hydrogen permeation efficiency. By carefully controlling these parameters, the system achieves high hydrogen purity while minimizing energy consumption associated with the separation process
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 method effectively increases hydrogen purity by reducing the concentration of impurities, making the product stream suitable for use in fuel cells and other energy applications.
Implementation Method 1
Hydrogen purification using one or more hydrogen-selective membranes is a pressure driven separation process in which one or more hydrogen-selective membranes are contained in a pressure vessel. The mixed gas stream contacts the mixed gas surface of the membrane(s), and the product stream is formed from at least a portion of the mixed gas stream that permeates through the membrane(s).
Implementation Method 2
Hydrogen purification using one or more hydrogen-selective membranes is a pressure driven separation process
Data Source
AI summary
Hydrogen purification devices and their components are disclosed. In some embodiments, the devices may include feed frame(s) and/or permeate frame(s) each having at least one elongate hole distinct and spaced from an open region, at least one output aperture, and/or at least one input aperture. The elongate hole may be disposed between the open region and the at least one input aperture. The elongate hole may be capable of receiving a portion of the mixed gas stream that leaks from the open region and/or at least one input conduit. The devices may additionally include gasket frames having at least one notch in one or more edges of a perimeter base. The notch may be in fluid communication with a longitudinal end portion of the elongate hole. The devices may further include first and second side plates that collectively enclose a plurality of frames.