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Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: distillation; column; thermal effects; efficiency; condensation; evaporation; reflux condenser; distillate, ректификация; колонна; термические эффекты; эффективность; конденсация; испарения; дефлегматор; дистиллят
The aim of the study was the use of thermal effects in the rectification of multicomponent mixtures of vegetable raw materials.The objectives of the study included the creation of a distillation column with a low flow resistance and high separating ability levels on the basis of deliberate action on the thermal effects caused by the process of evaporation and condensation.The results of investigation of thermal rectification obtained by strengthening ethanol-water mixture in a column with 25 stages pin made of horizontally fixed plates.It was found that the efficiency of separation of the mixture at the lower levels investigated by thermal distillation column is carried out mainly due to the effect caused by partial condensation, and on the upper levels, due to the evaporation of liquid placed on the surface of the plates.Column has reached a low resistance not exceeding 40 Pa, at a relatively high separation efficiency 0,4–0,7.The parameters of the process intensifies heat and mass transfer in thermal distillation.Developed column due to its high efficiency and low hydraulic resistance are recommended for carrying out the processes of rectification under vacuum, for example ethanol dehydration.
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