基于Aspen的MVR沼液浓缩系统的换热网络分析

摘要

MVR (Mechanical Vapor Recompression, mechanical vapor recompression) technology is a new energy-saving evaporation technology, and is a heat pump technology, it can compress secondary steam generated by the evaporation chamber to utilize its thermal energy. The pinch technology has been very widely used in heat exchanger network analysis in the chemical industry. According to the basic principles of the theory, the heat exchanger network analysis of MVR firedamp liquid evaporation system obtained by Aspen Plus simulation was carried out by Aspen Energy Analyzer software. The results showed that ,after the heat exchange network optimization, system economical efficiency was improved.%MVR技术是一种新型的节能蒸发技术，它的主要原理是对蒸发过程中产生的二次蒸汽进行再压缩处理，从而能够最大程度地利用其热能。此外，夹点技术在化工行业换热网络分析中已经得到了非常广泛的运用，根据夹点理论的应用原则，利用Aspen Energy Analyzer软件对Aspen Plus模拟出的MVR沼液蒸发浓缩系统进行换热网络分析。结果表明，进行换热网络优化过后，系统经济性得到了一定的提升，对实际工程中的热网设计起到了一定的参考意义。