The postcombustion CO₂ capture technology (PCC) is the topic of surplus study because it offers ease of implementation in the existing systems. To the best of the authors' knowledge, this technique has never been used for the automobile sector which has a major contribution toward anthropogenic CO₂. In this article, experimental investigation has been carried out on the chemical solvents to determine the efficacy of capturing CO₂ from multi-pollutant diesel engine exhaust. The captured CO₂ is measured in terms of percentage by volume of the total exhaust gas from three primary amines solvents, that is, monoethanolamine (MEA), N,N-dimethylethanolamine (DMEA), and ammonia at seven brake power values, and their capture efficiencies are compared. A proposed design for the implementation of carbon capture unit in the existing heavy-duty diesel engine has also been presented with theoretical calculation on the weight of the storage tank. Energy balance analyses have been performed to determine the energy needed to regenerate the solvents. It is found that the regeneration energy required for solvents MEA, DMEA, and ammonia is 2.2, 0.7, and 1.1 kWh, respectively which is quite lower than the total energy available with exhaust gas. Experimental results show that capture efficiency at ambient conditions with absorbents MEA, DMEA, and chilled ammonia is 90.95, 57.66, and 80.08, respectively. It reveals that the PCC method can be implemented in an existing diesel engine with MEA as an efficient and safe solvent.

中文翻译：

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柴油机尾气二氧化碳吸附剂吸附性能的实验研究

燃烧后 CO ₂捕集技术 (PCC) 是剩余研究的主题，因为它易于在现有系统中实施。据作者所知，该技术从未用于对人为 CO ₂有重大贡献的汽车行业。在本文中，对化学溶剂进行了实验研究，以确定从多污染物柴油机尾气中捕获 CO ₂的效率。捕获的 CO ₂以来自三种伯胺溶剂，即单乙醇胺 (MEA)、N、N的总废气的体积百分比来测量-二甲基乙醇胺 (DMEA) 和氨在七个制动功率值下，并比较了它们的捕获效率。还提出了在现有重型柴油发动机中实施碳捕集装置的建议设计，并提供了储罐重量的理论计算。已进行能量平衡分析以确定再生溶剂所需的能量。发现溶剂 MEA、DMEA 和氨所需的再生能量分别为 2.2、0.7 和 1.1 kWh，这远低于废气可用的总能量。实验结果表明，在环境条件下使用吸收剂 MEA、DMEA 和冷冻氨的捕获效率分别为 90.95、57.66 和 80.08。