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Bio fuels

Bioethanol

The importance of Bioethanol as an additive to regular fuel is increasing.

The production of Bioethanol is realised worldwide with various source materials based on freely-available raw materials. In North America, Bioethanol is mainly produced from maize, while in Europe wheat, rye or barley serve as raw materials. Predominantly Bioethanol is produced from the fermentation of these cereals based on sugar and starch and the subsequent distillation process. Following the distillation, the produced DGS sloop is mechanically de-watered and dried to form DDGS (Dried Distillers Grains & Solubles) in order to be used, for example, as animal feed.

: Bioethanol block diagram,

The essential factors for an efficiency and energy saving operation of a Bioethanol plant is the optimal treatment of the mash, the distillation of the Bioethanol and the efficient drying of the DGS distillery slop. Both central AVA processes – mixing and drying – are used here.

At the beginning of the production process, the various raw materials are ground and homogeneously mixed in an AVA mixer also with the addition of enzymes. This mixing is a continuous process, especially where a high throughput is required. The AVA horizontal mixer HTK for continuous operation creates a homogeneous mash from the initial products within a short time. Variations in the dosing of the products are optimally compensated with a high level of re-mixing inside the mixer.

An optimal mash treatment is the natural requirement for an efficient production process and is reliably achieved with the AVA mixers. The subsequent production stages for Bioethanol include hydrolysis, fermentation and distillation.

After the step of mechanical dewatering, the DGS slop (Distiller Grains & Solubles) obtained from the distillation process is put into an AVA shovel dryer type HTK-T and dried in a slightly low-pressure atmosphere. The special shovel agitator serves to transport the product along the length of the dryer drum which is heated via a heating jacket. Mixing in an agitated bulk serves to create a uniform temperature and product humidity in the product chamber. Special shovel designs can be selected, especially for large capacities. This ensures an optimal heat transfer between the product and the heated drum. Due to the particularly high level of re-mixing, advantageously short drying times and a sustainable product quality is achieved as a result.

Numerous references testify to our competence in the field of Bioethanol production and glycerine treatment. Ask us for further and more detailed information.

Machines used:

Continuous mixer
Horizontal dryer

Contact partner for bio fuels:
applications(@)ava-huep.com

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Bio fuels (PDF, 784 KB)