| Experimental Research on Preparation of Insoluble Sulfur with Low-Temperature Melting Method |
| Received:August 11, 2016 Revised:August 11, 2016 |
| DOI： |
| Key Words: low-temperature melting method；insoluble sulfur；stabilizer preparation；thermal stability；reaction conversion rate |
| Author Name | Affiliation | E-mail | | Wu Libao* | Sinopec Refinery Product Sales Company Limited | asyen@163.com |
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| Abstract: |
| The effects of various factors on the reaction process and product properties during the preparation of insoluble sulfur by low-temperature melting method were studied.The results showed that the different raw sulfur had little effect on the reaction conversion rate，but had obviously influence on the thermal stability of the product.The reaction temperature and time were the most important effect factors on the reaction conversion rate，the optimum melting temperature was 250 ℃ and the reaction time was 1 h.The conventional halogen donors and olefin stabilizers showed low activity during the melt reaction.The stabilizer KI could improve the crystal degree of the product during quench process.The best drying temperature was 70 ℃，and the drying time was 8 h.In oil-treated process，olefin stabilizer MD could inhibit the thermal decomposition of the product and improve its thermal stability. |
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