Title: Design Of An Absorption Column For Removal Of Carbon Iv Oxide From Natural Gas
Authors: Yelebe Blessing Zekieni, Owei L. Youpele
Volume: 10
Issue: 1
Pages: 35-43
Publication Date: 2026/01/28
Abstract:
This study designs and simulates an absorption column for removing acid gases, primarily CO?, from natural gas using the physical solvent Selexol (polyethylene glycol dimethyl ether). The system was modeled in Aspen HYSYS Version 10 using the Acid Gas-Physical Solvent fluid package, with a high-acid gas feed composition sourced from literature. The objective of this work is to reduce the CO? content of natural gas while enhancing the methane (CH?) concentration to meet pipeline quality specifications. Key process parameters, including temperature, pressure, stream composition, and the flow rates of both liquid and gas phases, were systematically monitored and adjusted to achieve optimal separation performance. Simulation results indicate that the CO? concentration was reduced to 1.05%, which falls within acceptable limits for pipeline-quality natural gas.