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首页> 外文期刊>Separation and Purification Technology >Studies of the coordination effect of DEA-MEA blended amines (within 1+4 to 2+3 M) under heterogeneous catalysis by means of absorption and desorption parameters
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Studies of the coordination effect of DEA-MEA blended amines (within 1+4 to 2+3 M) under heterogeneous catalysis by means of absorption and desorption parameters

机译：通过吸收和解吸参数在异构催化下二核混合胺（1 + 4至2 + 3米内）的协调效应

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摘要

One of the energy-efficient approach was to adopt amine blends with the combination of heterogeneous catalysts as a new solution for an amine scrubbing process of a coal-fired pilot plant. The major challenge was the contradiction that the energy-efficient amine solvents in the desorber usually behave poorly in the absorber. This study re-investigated the "coordination effect" of "MEA + DEA amine blends" and "heterogeneous catalytic CO2 absorption and CO2 desorption" in theory first, and then conducted the heterogeneous catalytic CO2 absorption with solid alkaline catalyst and CO2 desorption with solid acid catalysts onto 1 + 4 similar to 2 + 3 mol/L MEA + DEA blends. After the comprehensive analyses of the "absorption parameter" and "desorption parameter" into 1.25 + 3.75 to 2 + 3 mol/L blended amines with CaCO3 and blended gamma-Al2O3 + H-ZSM-5(2:1), it's found that the most suitable combination was 1.50 + 3.50 mol/L MEA + DEA with heterogeneous catalysis. This combination was more suitable and applicable to both absorber and desorber with catalytic packing than 2 + 3 mol/L MEA + DEA in an amine scrubbing process of capture pilot plant.
机译：其中一种节能的方法是采用胺共混物，其与异质催化剂的组合作为燃煤飞行厂的胺洗涤过程的新溶液。主要挑战是解吸器中节能胺溶剂的矛盾通常在吸收器中表现不佳。本研究重新研究了理论上的“MEA + DEA胺共混物”和“异质催化二氧化碳吸收和二氧化碳解吸”的“协调效应”，然后用固体碱性催化剂和固体酸的二氧化碳解吸进行异质催化CO2吸收催化剂上的1 + 4类似于2 + 3mol / L Mea + DEA共混物。通过CaCO3综合分析“吸收参数”和“解吸参数”和“解吸参数”至1.25 + 3.75至2 + 3mol / L混合胺，并发现了γ-al2O3 + H-ZSM-5（2：1），发现最合适的组合为1.50 + 3.50 mol / l Mea + DEA，具有异质催化。这种组合更适合并且适用于吸收器和解吸器，在捕获试验厂的胺洗涤过程中具有比2 + 3mol / L MEA + DEA的催化包装的吸收器和解吸器。

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