Ethanol Project

Ethanol projects, as renewable energy, are supported by governments to save the natural resources. Kinds of crop could be used for ethanol production, such as grains (corn, sorghum, rice, wheat, barley), tuber crops (tapioca, sweet potato, potato) and sugarcane molasses, sugar beet molasses, etc.

Supporting by mature technology and cost-effective products from China, SOMEC has experience and strength in carrying out EPC ethanol projects (edible ethanol, industrial ethanol or fuel ethanol), including design, equipment supply, erection or erection supervision, commissioning and running test.

Clients from all over the world are looking for Chinese ethanol products every year, while our markets mainly focus on South Asia and Southeast Asia countries, such as Indonesia, Thailand, Philippines, Pakistan. The maximum ethanol plant we have built is for Pakistan client in 2005, which has following capacities:

       100,000 ton/y industrial ethanol production line, with by-products of
       10,000 ton/y high purity liquid CO2
       15,000 ton/y glacial acetic acid (CH3COOH)

Steps in the Grain Ethanol Manufacturing Process

Milling The sorghum, corn or wheat first passes through hammer mills, that grind it into a fine powder called meal.
Liquefaction The meal is then mixed with water and alpha-amylase, goes through cookers, and starch is liquefied at higher temperatures. These high temperatures reduce bacteria levels in the mash.
Saccharification The mash is then cooled and the secondary enzyme (gluco-amylase) added to convert the liquefied starch to fermentable sugars
Fermentation Yeast is added to ferment the sugars to ethanol and carbon dioxide in a batch fermentation process which lasts for up to 48 hours.
Distillation The fermented mash, (10% alcohol), the non-fermentable solids from the grain, and the yeast cells are pumped to the distillation system where the alcohol is distilled off. The alcohol leaves at 96% stength, and the residue mash, exits as a by-product.
Dehydration  The alcohol then passes through a molecular sieve to remove the remaining water from the ethanol. The alcohol product at this stage is approximately 99.8% purity.
Co-Products There are three main co-products created in the production of ethanol
Distiller's grain