Vaporization reduction characteristics of aqueous ammonia solutions by the addition of ethylene glycol, glycerol and glycine to the CO2 absorption process.
Vaporization reduction characteristics of aqueous ammonia solutions by the addition of ethylene glycol, glycerol and glycine to the CO2 absorption process.
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DOI：
10.1016/s1001-0742(11)60797-3
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发表时间：
2012-03
影响因子：
6.9
通讯作者：
Jong-Beom Seo;Soo-Bin Jeon;Je-young Kim;Gang-woo Lee;Jong-hyeon Jung;K. Oh
中科院分区：
文献类型：
--
作者：
Jong-Beom Seo;Soo-Bin Jeon;Je-young Kim;Gang-woo Lee;Jong-hyeon Jung;K. Oh
氨水溶液具有吸收能力高、吸收速度快、腐蚀问题小等优点，可作为控制烟气中co2排放的替代吸收剂。钢铁工厂的二氧化碳排放量比单点源发电厂的排放量要高，需要引起高度关注。本研究以9 wt.%的低浓度氨水为原料，加入各种添加剂，用高炉煤气模型计算了其动力学性质。虽然氨浓度高的溶液可以提高co2的吸收效率，但氨离子以氨蒸汽的形式损失，由于氨吸附剂浓度较低，导致co2的吸收减少。为了减少氨的蒸发，选择了含有一个以上羟基自由基的乙二醇、甘油和甘氨酸。实验在313 K下进行，与高炉煤气模型的CO2吸收条件相似。
Aqueous ammonia (NH3) solution can be used as an alternative absorption for the control of CO2emitted from flue gases due to its high absorption capacity, fast absorption rate and low corrosion problem. The emission of CO2from iron and steel plants requires much attention, as they are higher than those emitted from power plants at a single point source. In the present work, low concentration ammonia liquor, 9 wt.%, was used with various additives to obtain the kinetic properties using the blast furnace gas model. Although a solution with a high ammonia concentration enables high CO2absorption efficiency, ammonium ions are lost as ammonia vapor, resulting in reduced CO2absorption due to the lower concentration of the ammonia absorbent. To decrease the vaporization of ammonia, ethylene glycol, glycerol and glycine, which contain more than one hydroxyl radical, were chosen. The experiments were conducted at 313 K similar to the CO2 absorption conditions for the blast furnace gas model.