Vacuum Distillation for Methanol Removal in Wine
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Solution Overview
Problem
Fermented solutions, such as wine, contain methanol, which is poisonous to humans and contributes to headaches and hangovers, and existing distillation methods are inefficient in removing it without causing significant evaporation losses and flavor/aroma damage.
Innovation Solution
A vacuum distillation process that reduces the boiling point of the solution, allowing for the removal of methanol and other contaminants without high-temperature distillation, using a vessel capable of withstanding vacuum and a condenser to collect the vaporized contaminants, thereby minimizing ethanol and aroma loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional distillation is used to remove methanol, then methanol content is reduced, but significant evaporation losses of ethanol and aroma occur
Solution Approach 1:
The patent changes the pressure parameter from atmospheric to vacuum conditions, which fundamentally alters the boiling points of the components. This parameter change allows selective removal of methanol at temperatures that prevent ethanol and aroma evaporation, resolving the contradiction between contaminant removal and substance preservation
Solution Approach 2:
The patent utilizes phase transition (vaporization) at different temperatures under vacuum conditions. Methanol vaporizes at a lower temperature than ethanol and aroma compounds, allowing selective phase transition and separation. This enables removing methanol in vapor form while keeping ethanol and aroma in liquid form, eliminating the trade-off between contaminant removal and valuable substance loss
2Object-affected harmful factors
If high-temperature distillation is applied to fermented solutions, then methanol is removed, but taste and aroma are significantly harmed
Solution Approach 1:
By changing the pressure parameter to vacuum conditions, the patent eliminates the need for high-temperature heating. The boiling point of methanol drops significantly under vacuum, allowing its removal at temperatures that preserve the delicate taste and aroma compounds in the fermented solution
Solution Approach 2:
The patent replaces the thermal field (high-temperature heating) with a pressure field (vacuum application). Instead of using mechanical heat to vaporize methanol, the system uses reduced pressure to lower the vaporization temperature, thereby protecting heat-sensitive taste and aroma components from degradation
3Object-affected harmful factors
If multiple distillation steps are used to purify alcohol, then methanol is effectively removed, but the process becomes complex and time-consuming
Solution Approach 1:
The patent achieves effective methanol removal in a single step by changing the pressure parameter to vacuum conditions. This single vacuum distillation step replaces multiple conventional distillation steps, simplifying the device and process while maintaining or improving removal efficiency. The key is that vacuum conditions create a larger boiling point difference between methanol and ethanol, enabling better separation in one pass
Solution Approach 2:
The patent extracts only the harmful methanol component from the fermented solution under vacuum conditions, without needing to perform multiple extraction or distillation operations. The vacuum environment allows selective vaporization and removal of methanol, leaving the desired ethanol and aroma compounds intact, thus achieving purification with a single extraction step
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
Effectively reduces methanol content in fermented solutions, improving their health benefits by minimizing hangover effects while preserving the taste and aroma of the wine without complex distillation apparatus or costly techniques.
Implementation Method 1
A vacuum is applied to the head space within the vessel. The vacuum draws out residual fermentation CO2 gasses including some SO2, and then draws contaminants, i.e. methanol in the form of micro-bubbles
Implementation Method 2
The present invention utilizes a vacuum distillation process to remove contaminants from fermented solutions such as wine
Implementation Method 3
The solution is then heated to a specified temperature
Implementation Method 4
The vacuum draws out residual fermentation CO2 gasses including some SO2, and then draws contaminants, i.e. methanol in the form of micro-bubbles to either be condensed (distilled) or vented
Data Source
AI summary
A method and apparatus are presented for reducing the methanol content in a fermented solution to create forms healthier to human consumption, thereby reducing headaches and hangovers. In accordance with the disclosed embodiments, the fermented solution is placed in a vacuum vessel and heated to a fixed temperature. Pulling a fixed vacuum within the vessel lowers the boiling point of the solution, creating a vapor selectively of the low-end congeners, for example, methanol. The methanol-rich vapor is condensed and disposed leaving a healthier fermented solution with reduced methanol content. In some embodiments, the fixed temperature is lower than or equal to 32 degrees C. which preserves the aroma and taste of the fermented solution.