造粒塔排放尾气粉尘测定方法探讨  

Discussing Measure Method for Dust in Tail Gas Discharged from Prilling Tower

作　　者：李志恒 常万银 李莉萍 崔勇 

机构地区：[1]中国石油宁夏石化公司,宁夏银川750026

出　　处：《化肥设计》2013年第5期29-32,共4页Chemical Fertilizer Design

摘　　要：尿素造粒塔尾气经过喷淋洗涤后,尿素粉尘含量的测定通常采用滤膜质量测尘法和光电直读测尘法。分析了滤膜质量测尘法和光电直读测尘法测定结果不准确的原因;探讨了造粒塔尾气洗涤前后样品发生的变化对测定准确性的影响;提出了采用化学测定法的方案。结果表明,化学测定法更适合于尿素造粒塔排放尾气中尿素含量的测定。After the tail gas from urea prilling tower was scrubbed through spraying, the filtering membrane mass dust measuring method and the photo -electricity reading dust measuring method were usually used in measure of urea dust content. Author has analyzed the inaccurate reason for measured re- suits by filter membrane mass dust measuring method and photo-electricity dust measure reading method ; has discussed the influence of the variation of ex- amples before/after scrubbing for tail gas from prilling tower on the measuring of accuracy; has supposed the scheme to adopt chemical measure method. Result indicates that chemical measure method is more suitable for measuring urea content in tail gas discharged from urea prilling tower.

关 键 词：尿素造粒塔 尾气 粉尘 喷淋洗涤 尿素含量 测定方法 化学测定法 

分 类 号：TQ113.252[化学工程—无机化工]