CO2 Separation Process of NaturalGas Streams by Membrane Permeation: Technological and Operational Approach

Abstract

The increase in clean energy’s demand, and the new policies in mitigating gas emissions with greenhouse gas have reactivated the production and market of natural gas (NG). In the fields of Brazilian pre-salt, it is ordinary for natural gas to be produced with a high CO2 content. Therefore, the CO2 content present in natural gas shall be separated for marketing purposes. This study aimed to review the literature on the methods of CO2 removal of NG currents, in which the membrane permeation method was evidenced. We concluded that membrane permeation is an efficient method for CO2 separation in isolated processes and in hybrid processes, having a lower energy consumption and enabling a higher removal rate at a relatively lower cost.