During the last few decades, membrane separation processes have experienced an increasing growth due to their many advantages and have now been used in many industrial fields. Features such as low energy consumption, low investment and start-up costs, no need for a large physical space, and operational simplicity can be considered as advantages of membrane methods compared to conventional separation processes. Of course, it should be noted that along with the significant advantages of using this technology compared to other separation methods, mainly membrane processes also face problems, concentration polarization, clogging, instability in harsh operational conditions and incomplete separation of components from each other are the most important problems. Membrane methods are considered, which limit their industrial use in some cases. Despite the above limitations, membrane processes have a bright perspective. Extensive research in this field in the world has gradually solved the problems and limitations of the development of this technology, and the advantages of membrane processes over other classic separation processes are increasing every day.

Nowadays, membrane separation methods are widely used in petrochemical and refinery industries with the aim of separating gases. For example, carbon dioxide separation from combustion products, hydrogen recovery from the purge stream of ammonia units, ethylene vapor recovery from argon in ethylene oxide production units, vinyl chloride monomers recovery in polyvinyl chloride production units, recovery of valuable hydrocarbons from flue gas flow in polyolefin production units. Separation of carbon dioxide and hydrogen sulfide from natural gas are examples of industrial applications of membrane separation processes in the field of gas separation. Shahrekord carbon dioxide Machinery Knowledge Base Company is developing membrane technology to separate carbon dioxide from gas streams resulting from combustion in cooperation with the Vice President of Science and Technology and the Polymer and Petrochemical Research Institute of Iran. By making membrane and membrane modules for the above application, membrane technology will be established in the field of gas separation in Iran. This company plans to develop membrane technology for different fields of gas separation.