加氢裂化装置的能量回收及利用

运用夹点技术对加氢裂化装置的换热网络进行优化，利用Aspen Energy Analyzer V 8.4软件模拟换热网络曲线对换热网络的特点进行分析，提出相应的优化方案，并利用Aspen Hysys模拟软件对优化方案进行模拟。结果表明：该换热网络的夹点温度为147.2℃，装置换热网络最小热公用工程用量为7.72 MW，最小冷公用工程用量为8.39 MW，节能潜力仍有6.67 MW；通过采用新增1台换热器E 1（利旧），利用152℃的柴油给45.5℃的冷低分油换热的优化方案，可分别节约热、冷公用工程2.11,0.36 MW，热、冷公用工程节能效率分别为27.34%,4.29%。

Energy recovery and utilization of hydrocracking unit

The heat exchange network of a hydrocracking unit was optimized by pinch technology.The characteristics of the heat exchange network were analyzed by Aspen Energy Analyzer software V 8.4 ， the corresponding optimization scheme was put forward and the optimization scheme was simulated by Aspen Hysys software.The results showed that the pinch temperature of the heat exchanger network was 147.2 ℃， the minimum heat utility consumption of the heat exchanger network was 7.72 MW， the minimum cooling utility consumption was 8.39 MW， and the energy saving potential was 6.67 MW. By adopting an optimization scheme of adding a heat exchanger E 1 （reuse） and using 152 ℃ diesel oil as heat exchange media to transfer heat to cold low fraction oil of 45.5 ℃， the saving of heat and cooling utilities was 2.11， 0.36 MW respectively， the energy saving efficiency of the heat utility and cooling utility was 27.34%， 4.29% respectively.