Selection of the Absorbent and Technological Parameters of the Natural Gas Purification Process with Equal Ratio of Acid Components

Natural gas from most fields contains undesirable acid impurities (hydrogen sulfide and carbon dioxide). The removal of these impurities is traditionally carried out by absorption purification using various absorbents, most often alkanolamines. The main factor influencing the choice of absorbent is the component composition of natural gas (the content of acidic components and their ratio).The paper presents the results of modeling a natural gas purification unit in order to select an absorbent and optimal technological parameters of the process. Studies of the purification process of natural gas with an equal ratio of acidic componentswith monoethanolamine, diethanolamine, methyldiethanolamine and diethanolamine + methyldiethanolamine absorbents were carried out. Based on the results obtained, the technological parameters of the process using an effective absorbent are presented.The results of the analysis of the influence of the main technological parameters on the consumption of energy resources in the process of regeneration of the selected absorbent are also given