微量硬度指示剂法在硫黄制硫酸装置余热锅炉给水硬度监测上的应用  

Application of micro hardness indicator method in hardness monitoring of waste heat boiler feed water in sulfuric acid plant production from sulfur

作　　者：李财红 金丽梅 沈慧斌 王永宏 王毕健 陈鑫 LI Caihong;JIN Limei;SHEN Huibin;WANG Yonghong;WANG Bijian;CHEN Xin(Yunnan Three Circles-Sinochem Fertilizers Co.,Ltd.,Kunming 650113,China)

机构地区：[1]云南三环中化化肥有限公司,云南昆明650113

出　　处：《磷肥与复肥》2023年第10期40-42,共3页Phosphate & Compound Fertilizer

摘　　要：GB/T 6909—2008《锅炉用水和冷却水分析方法 硬度的测定》不适用于测定硬度小于1μmol/L的水样。为准确分析硫黄制硫酸装置余热锅炉给水的微量硬度(≤2.0μmol/L),采用微量硬度指示剂法进行实验。结果表明,微量硬度指示剂法滴定终点变色灵敏,易于判定。该方法具有准确度高、成本低、易于操作、快速、高效等优点,值得在行业内推广应用。GB/T 69092008"Analysis of water used in boiler and cooling system—Determination of hardness"is not suitable for measuring water samples with hardness less than 1μmol/L.In order to accurately analyze the micro hardness(≤2.0μmol/L)in the waste heat boiler feed water of the sulfuric acid production process,the micro hardness indicator method is used for the experiment.The results show that the micro hardness indicator method is sensitive to the end point discoloration of titration,easy to determine.This method has advantages such as high accuracy,low cost,easy operation,fast and efficienct,and is worth promoting and applying in the industry.

关 键 词：硫黄制硫酸 锅炉给水 微量硬度 测定 

分 类 号：O655.2[理学—分析化学]