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Optimization of Methods for Purification of Gas Mixtures to Remove Carbon Dioxide (A Review)
Petroleum Chemistry  (IF1.029),  Pub Date : 2021-05-20, DOI: 10.1134/s096554412105011x
E. G. Novitskii, S. D. Bazhenov, A. V. Volkov


This review provides an analysis of modern process technologies for carbon dioxide removal from various gas mixtures (such as natural gas or hydrocarbon conversion gases in ammonia and syngas production facilities), as well as from flue gases generated during the combustion of carbon-containing feedstocks in power plants. The review also discusses various approaches to improve absorption/desorption processes, both in terms of extending the range of practicable amine solvents and the prospects for the implementation of a new equipment type, namely membrane contactors based on hollow fiber membranes or ceramic tubular elements. Finally, the paper describes a process configuration for the decarbonation of rich amine solvents at ≤90°C using 12% monoethanolamine (MEA) solutions to prevent the solvent from thermo-oxidative degradation.