Optimization on atmospheric distillation process for crude oil

In order to improve the economic efficiency of the atmospheric distillation unit when the crude nature has a major change,the operating conditions,nature of the product and overall energy consumption were analyzed and optimized. By doing experiment to optimize desalting temperature,the optimal temperature range of 130-135 ℃ was determined,which could improve the efficiency of electric desalting; the hydrodynamic( pressure drop and plate efficiency) contrast calculations of guide float valve and F1 float valve were performed,choosing the guide float valve with low pressure drop,high efficiency and operating flexibility,thus enhancing diesel oil yield,and reducing energy consumption. The whole tower reflux heat balance,heat distribution were calculated,adding circulating reflux unit at the 6thfloor of atmospheric tower and recovery heat 27. 52 × 106 k J / h,equivalent to fuel oil 4 880 t saved per year.