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Membrane Cascade Type of «Continuous Membrane Column» for Power Plant Post-Combustion Carbon Dioxide Capture Part 1. Simulation of the Binary Gas Mixture Separation
Atlaskin, A.A.; Petukhov, A.N.; Stepakova, A.N.; Tsivkovsky, N.S.; Kryuchkov, S.S.; Smorodin, K.A.; Moiseenko, I.S.; Atlaskina, M.E.; Suvorov, S.S.; Stepanova, E.A.; Vorotyntsev, I.V. Membrane Cascade Type of «Continuous Membrane Column» for Power Plant Post-Combustion Carbon Dioxide Capture Part 1: Simulation of the Binary Gas Mixture Separation. Membranes2023, 13, 270.
Atlaskin, A.A.; Petukhov, A.N.; Stepakova, A.N.; Tsivkovsky, N.S.; Kryuchkov, S.S.; Smorodin, K.A.; Moiseenko, I.S.; Atlaskina, M.E.; Suvorov, S.S.; Stepanova, E.A.; Vorotyntsev, I.V. Membrane Cascade Type of «Continuous Membrane Column» for Power Plant Post-Combustion Carbon Dioxide Capture Part 1: Simulation of the Binary Gas Mixture Separation. Membranes 2023, 13, 270.
Abstract
The present paper deals with the complex study of the CO2 capture from combined heat power plant flue gases using the efficient technological scheme design – membrane cascade type of «Continuous Membrane Column». In contrast to well-known multi-step or multi-stage process designs, the cascade type of separation unit provides several advantages. That apparatus conceptually refers to the distillation columns. Here, the separation process is implemented in it by creating two counter current flows. In one of them is depleted by the high-permeable component in a continuous mode, meanwhile the other one is enriched. Taking into account, that the circulating flows rate overcome the withdrawn ones, there is a multiplicative growth in separation efficiency. A comprehensive study of the CO2 capture using membrane cascade type of «Continuous Membrane Column» includes the determination of optimal membrane material characteristics, the sensitivity study of the process and feasibility evaluation. It was clearly demonstrated that proposed process provides the efficient CO2 capture, which meets the modern requirements in terms of CO2 content (≥ 95 mol.%), recovery rate (≥ 90 %) and residual CO2 concentration (≤ 2 mol.%). Moreover, it was observed, that it is possible to process CO2 with purity up to 99.8 mol.% at the same recovery rate. This allows use of this specific process design in the CO2 pretreatment operations in the production of high-purity carbon dioxide.
Keywords
flue gases; carbon dioxide; membrane; cascade; process design
Subject
CHEMISTRY, Chemical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
