Increasing the proof of alcohol is a common goal for commercial distillers, as it allows them to produce a higher quality and more potent product. There are several methods that can be employed to achieve this, but one of the easiest and most effective ways is by packing the distillation column with copper scrubbers, raschig rings, or glass distilling beads.
When alcohol is distilled, it passes through the column and is heated, causing it to vaporize. As it rises through the column, it comes into contact with the packing material, which acts as a surface for condensation. This condensation causes a slight natural reflux action, where the vaporized alcohol is partially condensed and then returns to the liquid phase. This reflux action helps to separate impurities from the alcohol, resulting in a higher proof final product.
Copper scrubbers, raschig rings, and glass distilling beads are all commonly used packing materials in commercial distillation. Copper scrubbers are made of copper mesh, which provides a large surface area for condensation. The copper also has the added benefit of reacting with sulfur compounds, helping to remove any unpleasant aromas or flavors from the alcohol.
Raschig rings are small ceramic or metal cylinders with a large surface area. They are stacked in the distillation column, creating channels for the vaporized alcohol to flow through. The shape and design of the rings promote efficient condensation and reflux, leading to increased proof.
Glass distilling beads are small glass spheres that are also packed into the column. They provide a similar function to the copper scrubbers and raschig rings, offering a large surface area for condensation. Glass beads are often favored for their inert nature, as they do not react with the alcohol or contribute any additional flavors to the final product.
When choosing a packing material, it is important to consider the specific needs of the distillation process. Copper scrubbers are commonly used when sulfur compounds are present, as they help to remove these impurities. Raschig rings and glass distilling beads are more versatile and can be used in a variety of distillation processes.
In my personal experience, I have found that packing a distillation column with copper scrubbers can significantly improve the final proof of the alcohol. I have used this method when distilling whiskey and found that it not only increased the proof but also helped to remove any unwanted flavors or aromas. The copper scrubbers effectively acted as a natural purifier, resulting in a higher quality spirit.
Packing a distillation column with copper scrubbers, raschig rings, or glass distilling beads is a simple and effective way to increase the proof of alcohol. These packing materials promote a slight natural reflux action, helping to separate impurities and produce a higher quality final product. Whether you choose copper scrubbers for their sulfur removing properties or opt for raschig rings or glass distilling beads for their versatility, incorporating packing material into your distillation process can greatly enhance the proof of your alcohol.