Corn-to-Ethanol Production

We use advanced dry milling technology to utilize corn in the production of high-quality Extra Neutral Alcohol (ENA). Across all our production processes, we observe the principles of process efficiency, product quality, and environmental responsibility together.

The production process begins with the transfer of corn from the storage silos to the milling unit. Here, the corn kernels are ground to the appropriate size. The ground corn is then mixed with water and transferred to the slurry preparation tank. With controlled heating and the addition of suitable enzymes and process aids, the starch in the corn is converted into fermentable sugars, preparing the mixture for the fermentation stage.

The prepared mixture is transferred to the fermentation unit. At this stage, microorganisms convert the fermentable sugars into alcohol. The fermentation process is carried out with parameters such as temperature, pH, and retention time carefully controlled to ensure stable and efficient alcohol production. Enzymes are also used to support the conversion process and optimize fermentation performance.

Following fermentation, the fermented mixture is transferred to the distillation unit. Through the controlled, multi-stage distillation process carried out in our eight-column distillation system, alcohol is separated from water and other components; impurities and unwanted components are removed. As a result of this process, Extra Neutral Alcohol (ENA) with a minimum purity of 96% is obtained and transferred to stainless steel storage tanks.

As part of our integrated production approach, the carbon dioxide formed during fermentation is recovered and purified. The recovered CO₂, brought to a purity of up to 99.9%, undergoes further processing to be converted into liquid carbon dioxide. This ensures that process by-products are utilized and resources are used efficiently.

The solid fraction obtained after distillation is passed through decantation, evaporation, and drying stages to be utilized in the production of Distillers Dried Grains with Solubles (DDGS). DDGS is a valuable feed raw material with high protein content used in animal nutrition. In addition, distilled corn oil is also recovered during the process, yielding a valuable by-product that can be utilized in various applications, particularly biofuel production.

Thanks to this integrated production model, Agro Kimya utilizes corn raw material effectively, maximizes product and by-product recovery, and supports operational efficiency together with sustainable resource use.