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首页> 外文期刊>American Journal of Chemical Engineering >Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology
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Energy Saving Research on Multi-effect Evaporation Crystallization Process of Bittern Based on MVR and TVR Heat Pump Technology

机译：基于MVR和TVR热泵技术的卤水多效蒸发结晶过程的节能研究

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This work keeps an eye on the energy saving research on evaporation crystallization process of bittern. Based on the thermo sensitivity of solubility of various salts in bittern, the magnesium salts are purified. The conventional evaporation crystallization process used to separate the bittern demands high energy consumption and has low thermodynamic efficiency. Therefore, the multi-effect evaporation (MEE), thermal vapor recompression (TVR) heat pump and mechanical vapor recompression (MVR) heat pump technology were applied to the conventional evaporation crystallization process. The MVR and TVR technology can both make full use of the secondary steam heating materials that will save energy. In addition, Aspen Plus (Version 7.3) was used to simulate the processes of the electrolyte-containing system under the ELECNTRAL thermodynamic model. For the better evaluation of various evaporation crystallization processes, some important evaluation indexes, such as energy consumption, annual total cost (ATC) and exergy loss were chosen as objective functions. Compared with the double-effect evaporation crystallization process coupled with TVR heat pump technology, the results indicated that the double-effect evaporation crystallization process coupled with MVR heat pump technology can save energy consumption and ATC by 80.52% and 15.32% respectively. Furthermore, the MVR heat pump technology takes the lowest effective energy loss, which is a more competitive factor of evaporation crystallization process of bittern.
机译：这项工作始终如一地注意卤水蒸发结晶过程的节能研究。基于卤水中各种盐的溶解度的热敏度，纯化镁盐。用于分离贝尔康的传统蒸发结晶过程需要高能耗并具有低热力学效率。因此，将多效蒸发（MEE），热气再压缩（TVR）热泵和机械蒸汽再压缩（MVR）热泵技术应用于传统的蒸发结晶过程。 MVR和TVR技术都可以充分利用将节省能量的二次蒸汽加热材料。此外，Aspen Plus（版本7.3）用于模拟Elecntral热力学模型下的含电解质系统的过程。为了更好地评估各种蒸发结晶过程，选择了一些重要的评估指标，例如能耗，年度总成本（ATC）和漏洞损失作为客观职能。与与TVR热泵技术相连的双效蒸发结晶过程相比，结果表明，与MVR热泵技术相连的双效蒸发结晶过程可以将能耗和ATC节省80.52％和15.32％。此外，MVR热泵技术采用最低有效的能量损失，这是卤水蒸发结晶过程的更竞争因素。

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