Device for increasing the efficiency of the packed heat and mass transfer column and manufacturing methodAleksandr V. Kozlov, Vladislav G. Ignatiev, Ivan V. Zheltoukhov, Victor G. Ovcharov, Valery V. Skripkin and Alexander N. PopovMATEC Web Conf., 324 (2020) 01008DOI: https://doi.org/10.1051/matecconf/202032401008