Abstract The increase of carbon dioxide (CO 2 ) concentration in the atmosphere leads to global warming and climate change. In our present study, a four stage fluidized bed reactor has been designed and developed for removal of CO 2 .Two different amine impregnated activated carbons have been prepared and used as adsorbents for capture of CO 2 . By changing the three hydrodynamics factors like gas velocity, solid flow rate and weir height, the highest percentage (%) removal of CO 2 has been found out. Sampling and analysis has been performed by using Orsat apparatus. Among the two adsorbents i.e. Monoethanolamine impregnated activated carbon (MEA-AC) and Diethanolamine impregnated activated carbon (DEA-AC), the % removal of CO 2 by Monoethanolamine impregnated activated carbon of impregnation ratio 0.6 (MEA-AC(0.6)) shows the highest, due to high degree stability of primary zwitterions formed than secondary zwitterions.Monoethanolamine impregnated activated carbon (MEA-AC) shows the highest % removal of CO 2 (95%), at minimum gas velocity (0.188 m/s), maximum solid flow rate (4.12 kg/h) and at maximum weir height (50 mm) at initial concentration of CO 2 , 3000 ppm. MEA impregnated activated carbon was found to be suitable adsorbent for removal of CO 2 from the flue gas in a multistage fluidized bed reactor.

中文翻译：

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二氧化碳捕集多级流化床反应器中单乙醇胺和二乙醇胺浸渍活性炭的吸附能力比较

摘要 大气中二氧化碳（CO 2 ）浓度的增加导致全球变暖和气候变化。在我们目前的研究中，已经设计和开发了一个四级流化床反应器来去除 CO 2 。已经制备了两种不同的胺浸渍活性炭并将其用作吸附剂来捕获 CO 2 。通过改变三个流体动力学因素，如气体速度、固体流速和堰高，已发现 CO 2 的最高去除百分比 (%)。使用 Orsat 仪器进行了采样和分析。在两种吸附剂即单乙醇胺浸渍活性炭 (MEA-AC) 和二乙醇胺浸渍活性炭 (DEA-AC) 中，浸渍比为 0.6 的单乙醇胺浸渍活性炭 (MEA-AC(0.6)) 对 CO 2 的去除百分比表明最高，由于形成的初级两性离子比次级两性离子具有高度稳定性。单乙醇胺浸渍活性炭 (MEA-AC) 在最小气体速度 (0.188 m/s)、最大固体流速下显示出最高的 CO 2 去除百分比 (95%) (4.12 kg/h) 和最大堰高 (50 mm)，CO 2 初始浓度为 3000 ppm。发现MEA浸渍活性炭是用于从多级流化床反应器中的烟道气中去除CO 2 的合适吸附剂。