NPK装置主要控制及联锁的设计分析  

Design Analysis for Main Controls and Interlocks in NPK Plant

作　　者：陈亦丹 CHEN Yi-dan(SINOPEC Nanjing Engineering & Construction Inc.,Nanjing 211100,China)

机构地区：[1]中石化南京工程有限公司,江苏南京211100

出　　处：《硫磷设计与粉体工程》2020年第3期31-35,I0002,共5页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：采用氨酸法喷浆造粒工艺的NPK装置,其主要操作参数控制为物料流量和温度。某NPK装置的管式反应、造粒部分的物料流量采用比值调节方案,热风炉部分温度采用串级调节方案,分别介绍了其控制流程、调节回路,以及主要设备的逻辑联锁控制方案等。The main operating parameters to be controlled for a NPK plant based on ammonia-acid process spray granulation are the flow and temperature of the material. The material flow in the tubular reaction and granulation sections of a NPK plant employ a ratio control scheme,and the hot air heater temperature control employs a cascade control scheme. The control flow,control loop,and interlock logic of main equipment are outlined,respectively.

关 键 词：磷肥装置 控制系统 流量控制 温度控制 逻辑联锁 

分 类 号：TQ444.5[化学工程—化学肥料工业]