VOCs蓄热氧化装置的控制与联锁方案

Control and Interlock Scheme of VOCs Heat Storage Oxidation Installation

针对石化行业VOCs废气,采用三床式蓄热氧化装置处理VOCs废气,实现VOCs达标排放.介绍了蓄热氧化工艺流程,阐述了蓄热氧化装置关键设备,反应器床层及提升阀的控制时序,蓄热氧化装置引气和控温方案,分析了蓄热氧化装置故障报警原因,并给出了联锁控制方案.实际应用表明:该装置联锁控制方案通过DCS把各设备高效组合为一个密切协作的系统,实现装置的自动化控制.

For the petrochemical industry VOCs waste gas,a three-bed heat storage oxidation installation is used to treat VOCs waste gas to satisfy VOCs emission standards.The heat storage oxidation process is introduced.The key equipment of the heat storage oxidation installation,the reactor bed layer and the control time sequence of lifting valve,the air bleed and temperature control scheme are expounded.The fault alarm cause of the heat storage oxidation installation is analyzed,and the interlock control scheme is put forward.The practical application shows that the interlock control scheme of the installation combines every device into a close cooperated system with high efficiency through DCS,and the automatic control of the installation is realized.