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用ASPEN软件对芳烃歧化装置工艺流程进行了模拟计算,对换热网络进行了夹点分析,并结合实际生产运行情况,对装置进行了用能分析,结果表明装置存在换热网络中冷高分系统先降温再升温的过程,反应进出料换热器传热效率较低,节能潜力较大。依据分析结果,提出了歧化反应出料采用热高分流程,反应器进出料换热采用高效换热器,优化换热网络等相应节能措施,并模拟计算了改造效果,分析了改造方案的可行性,估算了改造的投资和收益情况,得出通过改造可显著降低装置能耗、取得良好经济效益的结论。
ASPEN software was used to simulate the process of aromatics disproportionation plant. The analysis of pinch points of the heat exchange network was carried out and the energy consumption of the plant was analyzed according to the actual production and operation conditions. The results showed that there was a cold high score in the heat exchange network The system first cooling and then heating process, heat transfer efficiency of raw materials into and out of the lower heat, energy-saving potential. According to the result of the analysis, the dissertation presents some suggestions on how to use disproportionation reactions, such as the thermal high-grade process, the high-efficiency heat exchanger in the process of heat transfer in and out of the reactor, and the optimization of the heat exchange network, and the simulation and calculation of the reforming effect. The investment and profitability of the reconstruction are estimated, and the conclusion that the energy consumption of the plant can be significantly reduced through transformation can achieve good economic returns.