煤粉工业锅炉给水硬度试验测量方法  

Experimental method of feedwater hardness for industrial pulverized coal boiler

作　　者：李殿新 贾东亮 罗伟 

机构地区：[1]煤炭科学技术研究院有限公司节能工程技术研究分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《洁净煤技术》2016年第5期85-88,11,共5页Clean Coal Technology

基　　金：煤炭科学技术研究院科技发展基金资助项目(2014JC02)

摘　　要：为了在准确测量给水硬度的前提下节约试剂,以煤粉工业锅炉的给水为对象,首先取样给水100 m L,研究了氨缓溶液和铬黑T指示剂的用量对给水硬度测量结果的影响;然后分别取样给水100、50、25 m L,对比了取样体积和试剂用量对给水硬度测量结果的影响。结果表明:氨缓溶液和铬黑T指示剂的用量对给水硬度测量结果没有影响;给水取样50 m L时,测量得到的硬度值与取样100 m L时基本相同,但给水取样25 m L时测量误差较大。因此,从节约试剂的角度出发,测量给水硬度时建议取样给水50 m L、使用1 m L氨缓溶液和1滴铬黑T指示剂。In order to use small amount of NH_3NH_4Cl buffer solution and chrome black T to test the feedwater hardness of industrial pulverized coal boiler accurately,the influence of reagent dosage and sampling volume on feedwater hardness was investigated. The results showed that,when the sampling volume were 100,50,25 m L,the reagent dosage had no effects on the test results,while the sampling volume had great influence.When the sampling volume were 50,100 m L,the hardness was the same,25 m L sampling volume led to a larger error.So from the point of economical use of NH_3NH_4Cl buffer solution and chrome black T,50 m L feedwater,1 m L NH_3NH_4Cl buffer solution and one drop of chrome black T was the best usage.

关 键 词：煤粉工业锅炉 给水硬度 软化水 指示剂 

分 类 号：TK224[动力工程及工程热物理—动力机械及工程]