大颗粒尿素造粒装置MMU系统防凝胶堵塞优化调节  

Scheme of Anti-plugging of gel for MMU System in Large Granule Urea Prilling Device

作　　者：周家林[1] 王晓平[1] 王怀占[1] 卢海鹰[1] 熊志斌[1] 

机构地区：[1]中石油塔里木油田石化分公司,新疆库尔勒841000

出　　处：《化肥设计》2010年第5期37-39,共3页Chemical Fertilizer Design

基　　金：中石油重大化肥项目

摘　　要：单羟甲基脲(MMU)溶液和尿素溶液混合后可提高成品尿素的硬度,但MMU系统易产生凝胶堵塞现象。简述了TEC大颗粒尿素流化床造粒技术附属MMU系统的反应机理和工艺流程;分析了MMU系统产生凝胶堵塞的原因;提出了一种既能防止凝胶产生,又能有效去除游离甲醛的新配方,以优化MMU系统的生产调节。After mixing of urea solution with monohydroxymethylurea（MMU） solution it can increase the hardness of urea product,but the plugging phenomenon was easy to occur by gel in the MMU system.Author has described the reaction mechanism and process flow in the auxiliary MMU system of the large granule urea fluidized technology of TEC;has analyzed the reason of plugging by gel caused in the MMU system;has presented a new formula which can not only prevent the gel causing,but also eliminate effectively the free formaldehyde to optimize the production adjustment in the MMU system.

关 键 词：大颗粒尿素造粒装置 单羟甲基脲(MMU) 尿素 甲醛 凝胶堵塞 甲醛尿素进料摩尔比 配方 

分 类 号：TQ441.41[化学工程—化学肥料工业]