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首页> 外文学位 >Modeling of the phase behavior of light (C2 and C3) olefins in liquid phase epoxidation systems and experimental determination of gas/liquid mass transfer coefficients.
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Modeling of the phase behavior of light (C2 and C3) olefins in liquid phase epoxidation systems and experimental determination of gas/liquid mass transfer coefficients.

机译：轻质（C2和C3）烯烃在液相环氧化系统中的相行为建模和气/液传质系数的实验确定。

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Conventional technologies for the selective epoxidation of olefins such as ethylene and propylene to form their corresponding epoxides are either non selective and/or produce much waste. A novel biphasic process for the epoxidation of olefins has been developed by the researchers at Center for Environmentally Beneficial Catalysis (CEBC), employing environmentally benign substances (catalyst methyltrioxorhenium, oxidant aqueous H2O 2) dissolved in a suitable solvent (determined to be methanol). HYSYS RTM software was used to study the phase behavior and generate quantitative data on the solubility of gaseous olefins in the liquid phase which aided in the optimization of the reaction conditions. A detailed stirred tank reactor model was developed to estimate the gas/liquid mass transfer coefficient which was determined to be 0.14 sec-1 at 1000 rpm which ensured operation outside the diffusion limited region. Inerts such as N2 and CO2 can be used to mitigate the flammability envelope of these highly flammable gases.
机译：用于烯烃如乙烯和丙烯的选择性环氧化以形成其相应的环氧化物的常规技术是非选择性的和/或产生大量废物。环境有益催化中心（CEBC）的研究人员开发了一种新型的烯烃环氧化双相方法，该方法采用溶解在合适溶剂（确定为甲醇）中的环境友好物质（催化剂甲基三氧or，氧化剂H2O 2水溶液）。使用HYSYS RTM软件研究相行为并生成有关气态烯烃在液相中溶解度的定量数据，这有助于优化反应条件。开发了详细的搅拌釜反应器模型以估算气/液传质系数，该系数在1000 rpm下确定为0.14 sec-1，确保了在扩散限制区域外的运行。惰性气体（例如N2和CO2）可用于减轻这些高度易燃气体的可燃性范围。

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