尿素合成塔内衬检测的风险管理研究  

Study of Risk Management for Lining Test of Urea Tower

作　　者：刘存[1] 马歆[2] 张洪建[1] 朱龙居[1] 施昱[3] 魏安安[3] 李海[3] 

机构地区：[1]江苏省特种设备安全监督检验研究院扬州分院,江苏扬州225003 [2]江苏省特种设备安全监督检验研究院,南京210003 [3]常州大学,江苏常州213016

出　　处：《工业安全与环保》2013年第7期60-63,共4页Industrial Safety and Environmental Protection

基　　金：江苏省质量技术监督局科技基金"基于风险分析的尿素合成塔内衬检验技术与剩余寿命预测研究"(KJ103712)

摘　　要：尿素合成塔的主要失效形式是内衬失效,目前内衬的检测是缺乏科学依据的借助经验的定期检测。内衬风险管理技术是在用尿塔安全运行的基础,包括风险分析、风险评估和风险控制。对实测数据、腐蚀试验数据和事故资料统计分析可知,内衬失效主要为内衬腐蚀和泄漏,最常见形式是内衬的应力腐蚀。内衬的腐蚀来源于工艺、操作因素,制造缺陷和选材因素加剧了腐蚀的进程。风险控制目标从降低内衬腐蚀速率、减少内衬泄漏方面入手,在设计制造和生产管理中加以控制。The main form of urea tower failure is liner failure and at present urea tower liner detection mainly depends on experiences,lack of scientific references.Liner risk management technology,including risk analysis,risk assessment and risk control,is the basic ensuring safe operation of urea tower.It is known from the analysis of measured data,corrosion test data and accident statistics that liner failure mainly includes liner corrosion and leakage and stress corrosion is the commonly seen form.Liner corrosion results from craft and operation,while manufacturing defect and material selection intensifies the corrosion progress.Risk control should begins from lowering corrosion speed and reducing liner leakage and be conducted in designing & manufacturing and production & management.

关 键 词：尿素合成塔 风险管理 内衬失效 

分 类 号：TQ441.41[化学工程—化学肥料工业]