The distillation equipment in the brewing equipment mainly plays the role of separation and concentration, sterilization, heating and metamorphism. The small editor of Jintai brewing equipment factory, Daiyue district, Tai'an City will talk about these functions in detail.

1、分离浓缩作用

1. Separation and concentration

酒醅蒸馏主要是提取酒精及香味物质，并蒸入一定量的水，也混入一些微量物质，与此同时还排出了由固形物高沸点物质与水等组成的酒糟。

Distillation of fermented grains is mainly to extract alcohol and flavor substances, steam a certain amount of water, mix some trace substances, and discharge the fermented grains composed of solid substances, high boiling point substances and water.

另外，从气相排出一些低沸点杂质，如二氧化碳、酒、硫化氢、游离氨等。在分离的同时对酒精及香味成分也起到了浓缩的作用。

In addition, some low boiling point impurities such as carbon dioxide, wine, hydrogen sulfide and free ammonia are discharged from the gas phase. At the same time of separation, it also plays a role in concentrating alcohol and aroma components.

酿酒设备将酒醅中4％～6％的乙醇浓缩到50％～70％，其他物质也增加了浓度，从而使白酒保持应有的乙醇含量并具有特殊的芳香气味。

The brewing equipment concentrated 4% to 6% of the fermented grains of ethanol to 50% to 70%, and other substances also increased the concentration, so that the Baijiu should maintain its proper ethanol content and have a special aroma.

2、作用

2. Bactericidal action

固态发酵显著的特点就是酒醅循环发酵，蒸馏过程中杀死了酒醅中的微生物，消灭了酒醅中的杂茵，为下一步正常发酵创造了有利条件。

The remarkable feature of solid-state fermentation is the circular fermentation of fermented grains. During the distillation process, the microorganisms in fermented grains are killed and the miscellaneous bacteria in fermented grains are eliminated, creating favorable conditions for the next normal fermentation.

3、加热变质作用

3. Thermal metamorphism

发酵酒醅有浓郁的香气，经蒸馏后，白酒与酒醅的香味则完全不同。蒸馏时有微量香气弥散，还有一些对热不稳定的物质，经加热后，有些被保留，有些经热变之后生成香味物质。

Fermented fermented grains have strong aroma, and after distillation, the aroma of Baijiu and fermented grains is completely different. During distillation, there is a small amount of aroma dispersion, and some substances that are unstable to heat are retained after heating, and some aroma substances are generated after heat change.