不同酸解条件对煤中磷含量测定的影响研究  

Study on effect of different conditions of acid hydrolysis on determination of phosphorus in coal

作　　者：张博[1,2,3] 郑艳丽 

机构地区：[1]国家煤炭质量监督检验中心,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]煤科(天津)煤炭检测有限公司,天津300452

出　　处：《煤质技术》2017年第3期47-49,69,共4页Coal Quality Technology

摘　　要：分别利用高氯酸-氢氟酸和硫酸-氢氟酸两种灰样分解方法研究了低温度、长时间酸解条件和高温度、短时间酸解条件对煤中磷含量测定的影响。实验结果表明:高温短时的酸解方法可显著提高测试效率,高氯酸-氢氟酸最佳酸解条件是温度250℃、酸解时间2h,硫酸-氢氟酸最佳酸解条件是温度240℃、酸解时间2h,且两种灰样分解方法的测量结果间无显著性差异,可相互代替。The effects of low temperature, long time acid acidolysis condition and high temperature, short time acidolysis condition on the determination of phosphorus in coal were studied by using respectively two kinds of ash decomposition methods （perchloricacid-hydrofluoric acid and sulfuric acid- hydrofluoric acid）. The results showed that the high temperature short time of acidolysis method could improve the test efficiency significantly, and the optimum conditions for the acidolysis of perchloric acid-hydrofluoric acid were the temperature of 250 ℃ and the acidolysis duration of 2 h, meanwhile, the best acidolysis conditions of sulfuric acid-hydrofluoric acid were the temperature of 240 ℃ and the acidolysis duration of 2 h, and the results of the two kinds of ash decomposition methods were not significantly different, they could replace each other.

关 键 词：比色法 酸解条件 煤中磷含量 灰样分解 高氯酸-氢氟酸 硫酸-氢氟酸 酸解时间 

分 类 号：TQ533[化学工程—煤化学工程]