CAJ | 학술논문

用气相色谱技术,采用高温模拟蒸馏软件,优化了色谱条件,建立高温模拟蒸馏法测定渣油中硫的新方法,此方法的准确度和精密度满足工作要求;并考察不同工艺条件下,渣油中硫含量的变化趋势.结果表明:在柱温:初始温度为40℃,保持0 min,以25℃/min 升至430℃,保持5 min;载气:高纯氦气,流速为20 mL/min;进样量:0.5μL的色谱条件下,方法的精密度和准确度好.同温度下,随着加氢深度的增大,同沸点区间内的硫含量逐渐降低;在同一加氢过程中,随着沸点增加,硫含量先增加后随之降低,在530~610℃沸点区间内硫含量最大.同一加氢深度下,温度升高,同沸点区间内的硫含量降低;在同一温度下,随沸点增加,硫含量先增加后降低,在530~610℃沸点区间内硫含量最大.
용기상색보기술,채용고온모의증류연건,우화료색보조건,건립고온모의증류법측정사유중류적신방법,차방법적준학도화정밀도만족공작요구;병고찰불동공예조건하,사유중류함량적변화추세.결과표명:재주온:초시온도위40℃,보지0 min,이25℃/min 승지430℃,보지5 min;재기:고순양기,류속위20 mL/min;진양량:0.5μL적색보조건하,방법적정밀도화준학도호.동온도하,수착가경심도적증대,동비점구간내적류함량축점강저;재동일가경과정중,수착비점증가,류함량선증가후수지강저,재530~610℃비점구간내류함량최대.동일가경심도하,온도승고,동비점구간내적류함량강저;재동일온도하,수비점증가,류함량선증가후강저,재530~610℃비점구간내류함량최대.
Chromatography conditions were optimized by using gas chromatography and the high temperature simulated distillation software, high temperature simulation distillation method was established to determine sulfur content in residual oil. The changing of sulfur content in residual oil under various process conditions was investigated. The results show that the best chromatography conditions are as follows:initial column temperature of 40 ℃, keeping 0 min, increasing to 430 ℃ by 25 ℃/min,maintaining 5 min; high purity helium as the carrier, velocity of 20 mL/min; injection volume of 0.5μL , the method has good precision and accuracy. At the same temperature, with the increase of hydrogenation depth, sulfur content in the same boiling point interval gradually reduces. In the same hydrogenation process, along with increasing of the boiling point, sulfur content first increases and then decreases. When the boiling point interval is in the range of 530~610 ℃, sulfur content is largest. Under the same hydrogenation depth, with the increase of temperature, sulfur content in the boiling point interval gradually reduces. Under the same temperature, along with increasing of the boiling point, sulfur content first increases and then decreases. When the boiling point interval is in the range of 530~610℃, sulfur content is largest.