溴值法快速测定汽油中烯烃含量  

Rapid determination of olefin content in gasoline by bromine value method

作　　者：王新华 王翀 Wang Xinhua;Wang Chong(Quartermaster Station for Energy Quality Supervision,Joint Logistic Support Force,Beijing 100081,China)

机构地区：[1]军需能源质量监督总站,北京100010

出　　处：《炼油与化工》2020年第6期51-52,共2页Refining And Chemical Industry

摘　　要：快速测定的原理是将试样溶解于滴定溶剂中,以甲基橙为指示剂,用溴酸钾溴化钾标准滴定溶液滴定至红色消失为止。计算出用100 g试样所消耗的溴的克数。再由试样馏程的50%中馏点确定烯烃平均分子量。由试样的溴值和烯烃平均分子量计算出烯烃的百分含量。The principle of rapid determination is to dissolve the sample in titration solvent,take methyl orange as indicator,and titrate the sample with potassium bromide standard titration solution until the red color disappears.The grams of bromine consumed with the 100g sample were calculated.The average molecular weight of the olefin was then determined from the 50%middistillation point of the sample range.The percentage of olefin was calculated from the bromine value and average olefin molecular weight of the sample.

关 键 词：汽油溴值 中馏点 烯烃平均分子量 馏程测定法 

分 类 号：TQ016[化学工程]