Pulse DC Hydrogen Extraction from Seawater
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing hydrogen gas are inefficient, costly, and pose safety risks due to the challenges of separating hydrogen and oxygen from water, leading to the production of volatile and explosive 'brown gas, which is not suitable for large-scale safe hydrogen production.
Innovation Solution
A system and method involving a cylindrical chamber with a conductive feedstock and a power supply that applies pulse DC voltage to create an electrochemical reaction, generating hydrogen gas without surface reactions, using a coaxial electrode setup and specific materials like graphite and tungsten to retain oxygen and produce hydrogen efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional water electrolysis is used to produce hydrogen, then hydrogen gas can be generated, but the process produces volatile and explosive brown gas (mixed hydrogen and oxygen) which creates safety risks
Solution Approach 1:
The invention extracts only the hydrogen gas from the water electrolysis process while preventing the release of oxygen. The oxygen is retained and reacted with a reducing agent (such as iron powder or hydrogen gas) within the sealed container, leaving only hydrogen gas as the output product. This resolves the safety issue by removing the harmful oxygen component from the gas mixture.
Solution Approach 2:
The invention converts the harmful oxygen byproduct into a beneficial process by reacting it with a reducing agent to produce additional hydrogen gas or stable compounds. The oxygen that would normally create explosive brown gas is instead used to reduce metal oxides or react with hydrogen, converting a harmful factor into a useful chemical reaction that enhances hydrogen production or stabilizes the system.
2Quantity of substance
If traditional hydrogen production methods are used, then hydrogen can be produced, but the process is inefficient and costly
Solution Approach 1:
The invention merges multiple functions into a single sealed container system: water electrolysis, oxygen retention, oxygen reduction reactions, and hydrogen collection all occur within one integrated apparatus. This eliminates the need for separate gas separation, purification, and storage systems, significantly improving production efficiency and reducing operational costs.
Solution Approach 2:
The system uses the oxygen produced during electrolysis itself as the reducing agent to convert metal oxides back to metal while releasing hydrogen gas. This self-contained chemical cycle eliminates the need for external reducing agents or additional energy-intensive purification steps, making the process more efficient and cost-effective.
3Quantity of substance
If hydrogen is produced and stored for practical use, then enough mass can be accumulated, but the low mass and energy density makes it challenging to contain and transport safely
Solution Approach 1:
The invention produces hydrogen on-demand in sealed containers that can be used immediately or consumed relatively quickly. Rather than designing complex long-term storage and transport systems for large hydrogen masses, the system generates hydrogen in manageable quantities that are used promptly, eliminating the need for complex containment infrastructure.
Solution Approach 2:
The system divides hydrogen production into multiple small, independent sealed containers rather than producing and storing one large mass of hydrogen. Each container produces and contains a small amount of hydrogen suitable for immediate use, making containment and distribution simpler and safer while still providing sufficient total hydrogen mass through multiple units.
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 enables efficient and safe production of hydrogen gas with improved energy efficiency, reducing the energy required to break chemical bonds and avoiding the risks associated with traditional hydrogen production methods.
Implementation Method 1
a power supply providing an input pulse DC voltage to the anode and the cathode... extracting hydrogen gas from the conductive feedstock
Implementation Method 2
the reactive circuits and the off cycle chamber return load circuit process: voltages returning from the chamber during an off portion of the duty cycle, the returning voltages resulting from an electro-chemical reaction in the chamber without surface reaction on the cylindrical member
Data Source
AI summary
A system for extracting hydrogen from seawater includes a hollow chamber defined by a cylindrical wall, a cylindrical member within the chamber, a mechanism for recirculating conductive fluid through the chamber, a power supply connected via reactive circuits to the chamber wall to form an anode and to the cylindrical member to form a cathode and providing an input pulse DC voltage during a duty cycle on portion and an off cycle chamber return load circuit connected to the reactive circuits, and an off cycle chamber return load circuit connected to the positive and negative reactive circuits wherein the reactive circuits and the off cycle chamber return load circuit: process voltages returning from the chamber during an off portion of the duty cycle, the returning voltages resulting from an electro-chemical reaction in the chamber without surface reaction on the cylindrical member, and return the processed voltage to the chamber, wherein the chamber releases hydrogen gas.