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我国重油催化裂化新技术正被逐渐采用。由于重油催化再生温度高达700℃,对不能设旁路阀来切换的滑阀而言,要求就更高了。催化裂化装置的单、双动滑阀,主要用来控制和调节反应沉降器、再生器正常操作的压差,以维持生产所需的催化剂循环量,并能在紧急状态下自动关闭或打开,避免事故的扩大,其连续运行至少为一个生产周期。本文着重对滑阀的吹扫蒸汽量如何正确确定作些分析和论述。
China’s heavy oil catalytic cracking technology is being gradually adopted. As the heavy oil catalytic regeneration temperature as high as 700 ℃, can not set the bypass valve to switch spool, the requirements even higher. Catalytic cracking unit of the single and double slide valve, mainly used to control and adjust the reaction settler, regenerator normal operation of the pressure difference in order to maintain the production cycle catalyst required and can be automatically shut down or opened in an emergency, Avoid accidents, the continuous operation of at least one production cycle. This article focuses on how to correctly determine the amount of purge steam valve spool for some analysis and discussion.