Analysis And Application Of Deep-Cut Technology In The Vacuum Distillation Of Luoyang Petrochemical Crude Oil Unit

In2008, to meet the processing of heavy crude oil, lower residue yield,improve the yield of vacuum distillates, vacuum tower of Luoyang PetrochemicalDesign and Modification of the deep-cutting.The transformation for the fuel-type vacuum tower, wet micro-vacuumdistillation. vacuum distillation system designed to take full packing fill thevacuum tower, which consists of four sections and efficient structured packing,Full tower pressure drop as the1.3kPa; Inlet set ring multi-level gas-liquiddistributor, Using a low-flow washing evenly distributed multi-level narrowtrough liquid distributor; For taking the time using three steam vacuum device,Tower pressure less than2.0kpa; Progressively expanded to furnace tube diameter,Low-speed transfer line and the furnace tube to absorb the amount of thermalexpansion techniques. After starting the vacuum distillation unit transformation,Running effect is not satisfactory,To this end optimal operation of the vacuumdistillation of the deep-cut research, To improve the vacuum furnace outlettemperature of395℃, Adjusted by second lines、Three lines out of proportion，Residue530℃before the fraction of content from before Modification about12%to7%，Ensure the balance of the whole plant of heavy oil and heavy oilprocessing capacity, improve economic efficiency.With the heavy crude processing volume increased, in order to ensure thatthe deep-cut level and product quality, With Petro-SM software vacuum furnacesimulation results show that，Vacuum furnace is still tiouine space; improve thevacuum system level, Mechanical and hydraulic steam+vacuum; Increase by twoto take the heat, reduce light vacuum gas-oil(LVGO) of diesel with high vacuumgas-oil(HVGO) component.