At a certain temperature and pressure,the first extraction system of the butadiene extraction unit is prone to generating butadiene polymers due to the presence of trace oxygen and high concentration of butadiene,which can clog the tray,downcomer,pipeline,reboiler and other parts,affecting the normal production of the unit.Based on the main factors and mechanisms of polymer generation,and combined with the daily operation of this unit,optimization discussions are conducted from the aspects of controlling the oxygen content of the first extraction system,maintaining long-term stability of gas-liquid equilibrium,controlling the composition of raw materials,adding inhibitors that can slow down the activity of free radicals,and adding defoamers.This provides certain guiding significance for the long-term stable operation of the first extraction system.
关键词
一萃系统/堵塞/氧含量/阻聚剂/消泡剂/平稳运行
Key words
the first extraction system/blockage/oxygen content/polymerization inhibitor/defoamers/smooth operation
维普
万方数据