三氯化钛法测定煤中硫化铁硫探讨  

Discussion on sulfur iron sulfide in coal determination by titanium chloride

作　　者：孔令燕 韩建辉 KONG ling yan1,2, HAN jian hui1,2(1. Shanghai Saifu Fuel Inspection and Test Corpation Ltd. , Shanghai 20120G, China ; Inspection Center （Shanghai） of China Federation of Logistic and Purchasing, Shanghai 201206)

机构地区：[1]上海赛孚燃料检测股份有限公司,上海201206 [2]中国物流与采购联合会燃料质量监督检验测试中心(上海),上海201206

出　　处：《煤质技术》2018年第3期48-50,54,共4页Coal Quality Technology

摘　　要：介绍了三氯化钛法测定煤中硫化铁硫的检测原理,结合数理统计原理及对氯化亚锡用量、滴定终点判断的探讨,对三氯化钛法是否可替代氯化汞法测定煤中硫化铁硫进行成对对比分析。通过成对对比法实验证明,三氯化钛法可以替代氯化汞方法测定煤中硫化铁硫,使用氯化亚锡-三氯化钛还原剂的还原效果较好,且该法不易造成还原剂滴加过量,即三氯化钛法检测煤中硫化铁硫具有可靠性。This paper introduced the testing principles of titanium chloride method to determine the sulfur iron sulfide in coal,combining with the mathematical statistics principle and stannous chloride amount,discussion on the judgement of titration endpoint,whether the titanium trichloride method could take the place of the mercuric chloride method to determine the sulfur iron sulfide in coal were analyzed using comparison,through the pairwise comparison test experiments,we can see that titanium trichloride method could take the place of the mercuric chloride method to determine the sulfur iron sulfide in coal,the use of reductant stannous chloride reagent titanium trichloride reduction is better,this method can avoid the overdosing of reducing agent,it is reliable.

关 键 词：三氯化钛 氯化汞 硫化铁硫 氯化亚锡 成对对比 滴定终点 还原剂 

分 类 号：TQ533.1[化学工程—煤化学工程]