尿素装置蒸发系统负压频繁波动的原因分析及处理  

ANALYSIS ON FREQUENT FLUCTUATION OF NEGATIVE PRESSURE IN EVAPORATING SYSTEM OF UREA PLANT

作　　者：张贺 侯立业 Zhang He;Hou Liye(CNOOC Huahe Coal Chemical Co.,Ltd.,Hegang 154100)

机构地区：[1]中海石油华鹤煤化有限公司,黑龙江鹤岗154100

出　　处：《大氮肥》2023年第4期254-259,共6页Large Scale Nitrogenous Fertilizer Industry

摘　　要：为消除尿素生产过程中蒸发提浓系统真空度频繁波动的现象,通过从物料、工艺、设备等方面查找造成该状况的根本原因,采取相应措施,分别从根源上解决了二段蒸发气相管线堵塞和蒸发系统进料组分偏离设计值两大技术难题,使蒸发系统负压波动频次由月平均4次降至0,大大提高了尿素成品的产量,减少了不合格品数量,提升了经济效益,增加了尿素产品的品牌竞争力。In order to eliminate the frequent fluctuation of vacuum degree in steam evaporating and concentrating system during urea production,we checked from material,process and equipment to find the major reasons,then took relative measures to solve the two(2)technical problems ultimately such as the block of pipeline in secondary stage evaporation and the deviation of feedstock component from the design value in evaporating system,making the frequency of negative pressure fluctuation reduced from four(4)time per month to zero,which greatly improved the urea product quality,reduced the quantity of unpassed product,enhanced the economic benefit and enforced the brand competitiveness of urea product.

关 键 词：尿素装置 蒸发系统 负压波动 缩二脲 列管堵塞 腐蚀 

分 类 号：TQ441.41[化学工程—化学肥料工业]