摘要
精馏塔压力热旁路控制系统的回流罐和重沸器系统的凝结水罐至少有气、液两股进料线,且气相进料介质是可凝的,液相进料介质通常是过冷的,这一特点决定了罐内气、液两相界面必须保持稳定才能保证系统正常操作。举例说明了当气相线和液相线在回流罐或凝结水罐上的开口位置设计不当时,气、液两相界面不能保持稳定,会造成热旁路控制下的塔压大幅度波动或重沸器系统凝结水罐内频繁发生水锤现象,严重影响到精馏系统的正常操作,提出了"气相进气相空间、液相进液相空间"的设计原则。
Both the reflux drum of the pressure hot vapor bypass control system and the condensate pot of the reboiler system in distillation column system at least have a gas and a liquid feed line,the gas feeding medium is condensable and the liquid feed medium is usually sub-cooled. This characteristic determines the gas-liquid interface in the drum or the pot must be stable to ensure the normal operation of system.Examples are introduced to show the significant fluctuation of the tower pressure under the hot vapor bypass control system,and the water hammer occurred frequently in the condensate pot if the gas or liquid nozzle positions are not well designed,which can lead to the gasliquid interface instability.The design principle of gas into the gas phase space and liquid into the liquid phase space were put forward finally.
出处
《石油与天然气化工》
CAS
北大核心
2016年第4期1-4,9,共5页
Chemical engineering of oil & gas
关键词
热旁路
冷凝液
回流罐
凝结水罐
蒸汽平衡线
液膜
稳定
hot vapor bypass
condensate
reflux drum
condensate pot
steam balance line
liquid film
stability
