Abstract:

To improve the feed evaporation rate of vacuum distillation, on the basis of studying the process of the vacuum distillation unit, a pressurized atomizing feed for deep-cut technology was developed. The pressurized atomizing feed system was investigated by a vacuum distillation experimental unit. The changes of vaporization rate of feed in different feeding modes were investigated, and the results show that, under the same system pressure and feed temperature, the vaporization rate of the nozzle feed is higher than the rate of non-nozzle feed and the vapor and liquid mixture feed. Simulated industrial vacuum distillation operation, with the a pressurized atomizing feed model the oil yield can be increased by 2-5% and the separation efficiency of the vacuum distillation tower is increased, The experimental results show that the pressurized atomizing feed is an effective method to improve the vaporization rate of oil.

Key words: vacuum distillation tower, evaporation rate, enhanced evaporation