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首页> 外文学位 >Adsorption of water and ethanol vapors on 3A and 4A molecular sieve zeolites.
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Adsorption of water and ethanol vapors on 3A and 4A molecular sieve zeolites.

机译：水和乙醇蒸气在3A和4A分子筛沸石上的吸附。

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The goal of this study was to conduct adsorption equilibrium gravimetric tests on Grace Davison molecular sieve zeolites used in industrial ethanol drying processes. Measurements were performed in a stream of inert carrier gas such as nitrogen for different partial pressures of water and ethanol at atmospheric pressure and at various temperatures. Experimentally determined adsorption equilibrium data for water was in reasonable agreement with equilibrium data found in the literature and with manufacturer provided data. The Langmuir isotherm equation was used to correlate single component experimental data and obtained parameters for pure components of water and ethanol were used to construct a multicomponent adsorption model.; Binary equilibrium data was established across a plurality of partial pressures for various ethanol and water mixtures. Yang's multiregional extended Langmuir model was used to predict binary adsorption uptakes. Only the two parameters of the Langmuir isotherm for each pure component are used. Results were in very good agreement with experimental data. Developed equilibrium model will be used in a simulation package for optimization and design of industrial PSA processes for fuel ethanol production.; Key Words. water, ethanol, adsorption equilibrium, 3A zeolite, 4A zeolite, gravimetric analysis.
机译：这项研究的目的是对工业乙醇干燥过程中使用的Grace Davison分子筛分子筛进行吸附平衡重量测试。在大气压和各种温度下，在惰性载气（如氮气）流中对水和乙醇的不同分压进行测量。实验确定的水吸附平衡数据与文献中找到的平衡数据以及制造商提供的数据在合理范围内一致。用Langmuir等温方程对单组分实验数据进行关联，并使用所获得的纯净水和乙醇参数构建多组分吸附模型。在各种乙醇和水混合物的多个分压下建立了二元平衡数据。 Yang的多区域扩展Langmuir模型用于预测二元吸附吸收。对于每个纯组分，仅使用Langmuir等温线的两个参数。结果与实验数据非常吻合。开发的平衡模型将用于仿真程序包中，以优化和设计用于燃料乙醇生产的工业PSA工艺。关键词。水，乙醇，吸附平衡，3A沸石，4A沸石，重量分析。

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