To stabilize the energy potential of the European Union member states under conditions of increasing oil and fuel prices, the feasibility of increasing the production of bioethanol and technical ethyl alcohol (TEA) from hydrocarbon-containing feedstock has been substantiated. A comparative characterization of ethanol dehydration methods is presented, including azeotropic distillation, water adsorption on molecular sieves, and pervaporation. The specific advantages and disadvantages of each method are identified. An innovative TEA production technology has been developed, the implementation of which enables a 40% reduction in specific steam consumption and a 30% and water for cooling compared to existing conventional methods. A waste-free bioethanol technology has been proposed, which involves the integrated processing of grain-based stillage (the distillers' grains) using a decanter centrifuges and an ultrafiltration unit for removing loose cakes and concentrate the fugate without using a multi-effect evaporator plant. The innovative technology was implemented at the Borok Distillery by the specialists of "Organic" LLC. Its implementation makes it possible to obtain dry distiller's grains (DDGS) with a moisture content of 10-12% and a protein content of 30-35%. Furthermore, it reduces energy consumption in the processing of raw stillage by 40%, process water consumption by 60-70%, and the prime cost of bioethanol by 15%.
Obodovych et al. (Thu,) studied this question.
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