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首页> 外文期刊>Energy >A multiobjective experimental based optimization to the CO_2 capture process using hybrid solvents of MEA-MeOH and MEA-water
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A multiobjective experimental based optimization to the CO_2 capture process using hybrid solvents of MEA-MeOH and MEA-water

机译：使用Mea-MeoOH和MEA水的杂交溶剂对CO_2捕获过程的多目标实验优化

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摘要

To achieve the reduction of total energy consumption of CO_2 capture without the major drawbacks of conventional amine solvents, the superior performance of a blended physical-chemical solvent, MEA-MeOH, was experimentally compared with that of MEA aqueous absorbent in lab-scale absorption/ desorption towers, equipped with stainless steel pall ring packings. Considering the typical industrial requirements, the main operating variables accounted for each solvent were the operating temperature (35-55 °C), amine concentration (15-30 wt%), gas flow rate (50-100 l/min), liquid flow rate (0.75-1.25 l/ min), CO_2 concentration in the inlet gas (5-15 mol %), and the reboiler heat duty (1.4-2.2 kW). Response sutface methodology was applied to give a quadratic mathematical model for obtained empirical volumetric overall mass transfer coefficients (K_Ga_V). Based on the drastic increase of the enetgy requirement for solvent regeneration, a multiobjective optimization framework has been made to achieve the maximum desitable values fot the K_Ga_V, and the absotption percentage (Φ) with the minimum energy consumption (Ω). It was suggested that under the optimum operating condition, adding methanol to an aqueous MEA solution, reduces the regeneration energy consumption by 12%, while augmenting the CO_2 absotption percentage (Φ) by 9.1%.
机译：为了在没有常规胺溶剂的主要缺点的情况下实现CO_2捕获总能耗的减少，混合的物理化学溶剂，Mea-MeOH的优异性能与MEA含水吸收剂在实验室吸收/的情况下进行了实验。解吸塔，配备不锈钢壁挂封装。考虑到典型的工业要求，每种溶剂的主要操作变量占工作温度（35-55°C），胺浓度（15-30wt％），气体流速（50-100升/分钟），液体流动入口气体中的速率（0.75-1.25 L / min），CO_2浓度（5-15mol％），再沸器热量（1.4-2.2 kW）。应用响应Sutface方法是应用用于获得经验体积体积传质系数（K_GA_V）的二次数学模型。基于溶剂再生才能的大幅增加，已经进行了多目标优化框架，以实现最大可消化值，以及具有最小能量消耗（ω）的收集百分比（φ）。建议在最佳运行条件下，将甲醇添加到水溶液中，将再生能量消耗降低12％，同时将CO_2吸收百分比（φ）增加9.1％。

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