Fluorine Gas Production Device Partition Wall Geometry
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Solution Overview
Problem
Conventional fluorine gas production devices experience reduced current efficiency due to recombination reactions between fluorine and hydrogen gases at high current densities, as the gases are not completely separated by the partition wall, leading to inefficiencies in electrolysis.
Innovation Solution
A fluorine gas production device with a cylindrical partition wall extending vertically, where the cathode is completely immersed and the anode is partially exposed, with specific geometric configurations and materials to enhance gas separation and reduce recombination reactions, including a cathode connection member that allows fluid circulation and an insulating layered member to prevent electrical conductivity issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrolysis is performed at high current density to increase productivity, then fluorine gas production efficiency is improved, but gas separability deteriorates causing recombination reactions
Solution Approach 1:
The partition wall is extended in the vertical dimension to protrude into the gas phase region above the electrolyte surface. This dimensional extension creates a physical barrier that prevents horizontal mixing of fluorine and hydrogen gases in the gas phase, while the specific protrusion depth (10-30mm) is optimized to maintain adequate electrolyte circulation and electrode access.
Solution Approach 2:
The partition wall acts as an intermediary structure between the anode and cathode chambers. By extending this intermediary element into the gas phase, it mediates the separation of gases that would otherwise mix at the electrolyte surface, preventing recombination reactions while allowing the electrolysis process to continue at high current densities.
2Reliability
If partition wall immersion depth is increased to improve gas separation, then current efficiency is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
Instead of extending the partition wall throughout the entire cell height or requiring complex multi-component structures, the invention applies partial action by extending the partition wall only to the necessary depth (10-30mm) into the gas phase region. This sufficient but not excessive extension achieves effective gas separation while maintaining structural simplicity and ease of manufacture.
3Reliability
If partition wall is extended deeper into electrolyte to prevent gas mixing, then gas separability is improved, but electrolyte circulation and electrode access are hindered
Solution Approach 1:
The partition wall extension is limited to the specific depth range of 10-30mm into the gas phase region, which is sufficient to prevent gas mixing at the electrolyte surface but does not extend deep enough to interfere with electrolyte circulation patterns or electrode access. This partial extension achieves the necessary gas separation without excessive intrusion into the electrolyte zone.
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 device effectively separates fluorine and hydrogen gases at high current densities, maintaining high current efficiency and preventing recombination reactions, thus optimizing fluorine gas production.
Implementation Method 1
a partition wall such that fluorine gas generated in an anode and hydrogen gas generated in a cathode are not mixed with each other to prevent a reaction in which the fluorine gas generated in the anode and the hydrogen gas generated in the cathode contact to form hydrogen fluoride
Implementation Method 2
Fluorine gas can be synthesized by electrolyzing an electrolytic solution containing hydrogen fluoride (electrolytic synthesis)
Data Source
AI summary
A fluorine gas production device includes an electrolytic cell, a partition wall extending downward in the vertical direction from the ceiling surface inside the electrolytic cell to partition the electrolytic cell into an anode chamber and a cathode chamber, an anode, and a cathode. The lower end of the partition wall is immersed in the electrolytic solution and a length in the vertical direction of a portion immersed in the electrolytic solution of the partition wall is from 10% to 30% of the distance from the bottom surface inside the electrolytic cell to the liquid level of the electrolytic solution. The cathode is completely immersed in the electrolytic solution and the upper end of the cathode is arranged at a lower position in the vertical direction relative to the lower end of the partition wall. The anode is partially exposed from the liquid level of the electrolytic solution.