Перегляд за Автор "Chumachenko, Sergii"

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Energy-saving rectification technology with controlled mass exchange cycles between liquid and vapor
(2021) Buliy, Yuri; Kuts, Anatoly; Forsyuk, Andriy; Chumachenko, Sergii
Purpose of the article: the definition of the hydrodynamic mode of operation of barbotage perforated plates, of the efficiency of the technology of cyclic rectification in the mass-exchange columns equipped with barbotage perforated plates with variable free cross-sectionin and determining the consumption of heating steam in the rectificational and epyuratin columns. Research methods - analytical, chemical, physico-chemical with the use of instruments and research methods used in the production of rectified ethyl alcohol. Fluid consumption was controlled with the help of flowmeter RM, air velocity in the free section of the column - anemometer MS-13, in the holes of the plates - by calculation method. The concentration of volatile impurities of alcohol was determined on a gas chromatograph with a column HP FFAP 50 m × 0.32 m. Analysis of research samples was performed according to the State Standard of Ukraine 4222:2003 "Vodka, ethyl alcohol and water-alcohol solutions. Gas chromatographic method for determination of microcomponents content". An energy-saving technology of cyclic rectification with a continuous supply of heating steam and liquid to a mass-exchange column apparatus equipped with flake plates is proposed. The innovative method allows to prolong the time of contact of steam and liquid on plates up to 40-60 s and to reduce the time of overflow up to 1-1,7 s. In order to implement the technology, a rectification column design was proposed, equipped with flake plates with variable free cross-section.
Potential Radiation Impact of the Burial of the “Klivazh” Facility on the Yunkom Mine
(2020) Yakovliev, Yevhenii; Chumachenko, Sergii; Morsch, Yevhenii; Romanyuk, Valentin; Nikitin, Anatolii
Today, the issues of assessing natural and man-made risks in the area of the Joint Forces operation related to the flooding of the mine by Yunk are relevant. The risks of groundwater contamination and groundwater with radionuclides from the “Klivazh”facility, which was formed as a result of an underground nuclear explosion, increase in the absence of the pumping possibility of mine water from this mine. Radiation threats caused by the passive flooding of this facility create a number of negative consequences for the territories controlled by Ukraine. Therefore, there is an urgent need to assess the risk of contamination of the surrounding areas with radionuclides cesium-137, strontium-90 from the “Klivazh”facility. Given the existing hybrid war in eastern Ukraine, the solution to this problem can be considered as an element of analytical assessment of the predicted consequences of the “environmental war” against Ukraine.