Abstract
With rising energy prices, the development and implementation of innovative energy-saving technologies is a priority in the production of rectified alcohol and bioethanol. By-products of distillation are the head fraction of ethyl alcohol, fusel oil, and fusel alcohol.
 Existing methods of joint processing of the head and fusel fractions in one column do not provide effective removal together head and intermediate impurities, which adversely affects the quality of commercial alcohol.
 The aim of the work was to develop methods of joint processing of the head and fusel fractions in the column for the concentration of impurities of cyclic action, to determine the optimal technological parameters of the column, and to test the efficiency of innovative methods in production conditions: to determine the degree of extraction, the concentration of volatile impurities Three schemes of processing of the head and fusel fractions are given.
 The method I allowed to free the bottom products from the head and intermediate impurities of alcohol and use such a liquid for hydroselection in the epuration column. Method II allowed significantly improving the physicochemical parameters of the bottom water-alcohol products, improving the quality of rectified ethyl alcohol by more complete removal of volatile organic impurities from the zones of their maximum accumulation and reducing their content in the reflux entering the irrigation column. Method III allowed ensuring maximum removal of volatile head and intermediate impurities and reducing the loss of ethyl alcohol with the concentrate of impurities.
 The use of innovative methods allows for joint processing of the main and fusel fractions in the production of rectified alcohol and bioethanol, to increase the yield of marketable alcohol by 3.8%.
Highlights
The efficiency of joint processing of head and fusel fractions in a column for the concentration of impurities of cyclic action under production conditions has been investigated
В процесі розгонки із нижньої частини декантатора з флегмою на верхню тарілку колони повертаються метанол, оцтовий, мурашиний, кротоновий альдегіди, частина спиртів сивушного масла (н-пропіловий та ізопропіловий спирти), акролеїн – домішки, які в незначних кількостях суттєво погіршують якісні показники ректифікованого спирту
The development and implementation of innovative energy-saving technologies is a priority in the production of rectified alcohol and bioethanol
Summary
The efficiency of joint processing of head and fusel fractions in a column for the concentration of impurities of cyclic action under production conditions has been investigated. Інноваційні способи дозволяють суттєво зменшити енерговитрати, витрати гарячої технологічної води на гідроселекцію, скоротити втрати етилового спирту, кількість спиртовмісних відходів, в повній мірі виділяти головні домішки, підвищити ступінь вилучення і кратність концентрування летких домішок сивушних фракцій і отримати спирт сорту «Люкс».
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