%0 Journal Article %T MODERNIZATION THE STAGE OF METHYLAMINES RECTIFICATION IN JSC «ANHK» %A Shvalev, E.E. %A Kuzora, I.E. %A Dubrovskiy, D.A. %A Semenov, I.A. %K methylamines, rectification, grooved trays, valve trays. %J Modern Technologies and Scientific and Technological Progress %D 2022 %N 2021 %P 1 %I Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»