| 不溶性硫黄高温稳定性测定专用液体石蜡性能研究 |
| Property of Special Liquid Paraffin for Determination of High Temperature Stability of Insoluble Sulfur |
| 投稿时间：2018-08-30 修订日期：2018-08-30 |
| DOI：10.12136/j.issn.1000-890X.2019.08.0627 |
| 中文关键词: 不溶性硫黄 高温稳定性 液体石蜡 氮含量 |
| 英文关键词: insoluble sulfur high temperature stability liquid paraffin nitrogen content |
| 基金项目: |
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| 中文摘要: |
| 研究不溶性硫黄（IS）高温稳定性测定专用液体石蜡性质对IS高温稳定性测定结果的影响。结果表明：采用不同液体石蜡所测IS的105和120 ℃的高温稳定性最大差值分别约为10%和30%；液体石蜡的氮含量对IS高温稳定性测定结果的影响较大，馏程和粘度的影响较小，酸度基本无影响，建议测定用液体石蜡的氮含量小于1 μg·g-1，终馏点低于450 ℃，40 ℃时的粘度低于15 mm2·s-1。 |
| 英文摘要: |
| The influence of the properties of liquid paraffin used for the determination of the high temperature stability of insoluble sulfur (is) on the determination results of the high temperature stability of is was studied. The results show that the maximum difference of the stability of is at 105 ℃ and 120 ℃ measured by different liquid paraffin is about 10% and 30% respectively; The nitrogen content of liquid paraffin has a great influence on the determination result of is high temperature stability, the distillation range and viscosity have a small influence, and the acidity basically has no influence. It is suggested that the nitrogen content of liquid paraffin used for determination is less than 1 μG·g-1, the final boiling point is lower than 450 ℃, and the viscosity at 40 ℃ is lower than 15 mm 2·s-1. |
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