Customizable Fishbone Lamella Gas Seperation Grid for Electrolysis

thingiverse

This is a basic design for a grid used in electrolysis equipment for gas separation. Two identical versions of this grid are stacked back to back, forming herringbone patterns that prevent gases from crossing over between the two sides. In practical use, a gas separation wall must be constructed and extend upward, with the fluid level always above the grid. When built alone, this component is incomplete. To be functional, an electrolysis chamber capable of gas separation needs to be used in conjunction. The design could potentially be improved by integrating a gas splitter top as a single piece with mostly diagonal surfaces to maximize gas tightness. Pros and Cons: - No membranes are required for gas separation. - Even if membranes are used, the grid provides mechanical support. - Increasing the distance between plates results in higher electrolyte requirements but reduces water resistance between the plates. Some guidelines found online include: - A bubble-flow space of 1.5 to 2.0 mm is recommended. - Keep the current below 85 mA/cm^2 of plate area. - Target a 2V voltage drop per plate, suggesting six plates in series can be useful. To facilitate visual inspection, one side of the chamber can be designed without an easy-slide border by gluing a transparent window. Issue: The use of ABS and PET materials is problematic due to their limited lye resistance. Data on the suitability of PLA and nylon for this purpose is lacking.