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Date of Publication:2022-10-09

Journal:化工进展

Affiliation of Author(s):化工学院

Volume:38

Issue:1

Page Number:136-144

ISSN No.:1000-6613

Abstract:The gas membrane separation technology is limited by the properties of industrial membrane materials and often cannot meet the requirements of selectivity and permeability in the production process at the same time. The dual-membrane module integrates two gas membrane materials with different or even opposite permeation properties into one structure, which can well compensate for the poor selectivity of the membrane material and the low permeation rate. First, the research progress of the dual-membrane module is introduced, and the contributions of several main research teams from its generation to development are reviewed. Subsequently, the characteristics of enhanced mass transfer and separation are introduced, the basic principle of reducing concentration polarization on both sides of membrane is shown, and the influence of flow form on separation efficiency of components is analyzed. Then, the three coupling processes of dual-membrane + absorption, dual-membrane + reaction and dual-membrane + condensation +distillation based on the dual-membrane module are described in detail by examples. Finally, the prospects for the research and industrial application of the dual-membrane module are presented. Through the coupling with other separation methods, the dual-membrane module has shown certain potential and unique advantages in the fields of petrochemical industry and natural gas industry. The study on the dual-membrane module is still in the development stage, and the experimental study on separation sequence and operation condition of membrane module needs to be strengthened. ? 2019, Chemical Industry Press. All right reserved.

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