Acid gas removal (AGR) is a critical step in the supply chain of natural gas for its safe transmission and clean combustion. Chemical amines are the most commonly employed commercial solvents for the gas cleaning. Due to energy intensive nature of the AGR process, ways to improve process efficiency are vital. This study investigated the removal of acid gases from the associated and non-associated sour feeds using a blend of diglycolamine (DGA) and methyldiethanolamine (MDEA) solvents at a total strength of 50 wt. %. Steady-state process simulation models have been developed to seek the process improvement by utilization of amine blends. The study performed a detailed energy and economic analysis to understand the feasibility of the investigated amine blends. The results show that when 45 wt. % DGA is mixed 5 wt. % MDEA additive for the processing of associated gas, a saving of 3.42 $/MMSCF of sweet gas produced is achieved. On the other hand, cost per MMSCF of sweet gas increases significantly when DGA additive is mixed with MDEA amine for the processing of non-associated gas.

酸性气体去除（AGR）是天然气供应链中安全传输和清洁燃烧的关键步骤。化学胺是用于气体清洁的最常用的商业溶剂。由于AGR工艺的能源密集型性质，提高工艺效率的方法至关重要。这项研究研究了使用总浓度为50 wt。％的二甘醇胺（DGA）和甲基二乙醇胺（MDEA）溶剂的混合物从相关的和非相关的酸性进料中去除酸性气体的方法。％。已经开发了稳态过程模拟模型，以寻求通过利用胺共混物来改进过程的方法。该研究进行了详细的能源和经济分析，以了解所研究的胺共混物的可行性。结果表明，当45wt。将5重量％的DGA混合。％MDEA添加剂用于伴生气的处理，可节省3.42 $ / MMSCF产生的甜味气。另一方面，当将DGA添加剂与MDEA胺混合以处理非伴生气时，每MMSCF甜味气的成本会显着增加。