降低尿素颗粒结块的方法及措施  

METHOD TO PREVENT GRANULAR UREA AGGLOMERATION

作　　者：侯立业 苏顺 Hou Liye;Su Shun(CNOOC Huahe Coal Chemical Co.,Ltd.,Hegang154110)

机构地区：[1]中海石油华鹤煤化有限公司,黑龙江鹤岗154110

出　　处：《大氮肥》2022年第6期394-397,404,共5页Large Scale Nitrogenous Fertilizer Industry

摘　　要：结合流化床造粒工艺技术特点,分析认为造成尿素颗粒易发生结块的主要原因是蒸发系统工艺指标控制不当、系统负荷波动较大以及造粒机相关设备本身存在的缺陷等。通过采取优化蒸发系统的温度、真空度,改造造粒机相关设备管线等措施,有效降低了尿素颗粒的结块率。After studying the characteristics of fluidized bed prilling process,the main reasons of granular urea agglomeration came down to the improper control of process index in evaporating system,large vibration of the load,and the defects on prilling equipment itself.By optimizing the temperature and vacuum degree in the evaporating system and modifying the pipeline on prilling equipment,the agglomeration was effectively reduced,which ensured the long term operation of prilling system,lowered down the consumption of ammonia and steam per ton urea,and therefor fairly increased the economic profit of the enterprise.

关 键 词：大颗粒尿素 造粒机 结块 长周期 

分 类 号：TQ441.41[化学工程—化学肥料工业]