低温制备不溶性硫磺的工艺条件
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摘要
由于普通硫磺溶于CS2而不溶性硫磺不溶于CS2,工业生产中常使用CS2作为萃取剂,从普通硫磺中萃取出不溶性硫磺。但CS2在安全方面具有很大缺陷,如气味大,毒性大,容易挥发和爆炸。本实验尝试在低温状态下(常温),对一些低毒性的萃取剂——甲苯、SZ-54、苯乙烯对不溶性硫磺粗品的分离效果进行研究,以期待找到低温条件下制备不溶性硫磺的最佳条件。实验表明,这三种试剂混合而成的混合萃取剂将是以后研究的方向。在低温条件下(0℃～30℃),这为解决不溶性硫磺生产过程中萃取剂的环保性、安全性及可回收性提供了可靠依据,为其工业化生产提供广阔的发展前景。
Insoluble sulfur gradually begins to occupy the main position of the rubber industry at home and abroad. Common sulfur is soluble in CS_2 and insoluble sulfur is not soluble in CS_2, CS_2 is often used in industrial production to extract insoluble sulfur from ordinary sulfur. But CS_2 has a large defect in safety,such as large smell, large toxicity, volatile and explosive. This study was attempted to research the separation effect of the lower toxicity extraction agent-toluene, SZ-54 and styrene on insoluble sulfur crude, and aimed to find the best conditions for the preparation of insoluble sulfur at low temperature(normal temperature). The experiment result shows that the mixture of three kinds of reagent mixed extraction agent is the direction of future research under the condition of low temperature(0 ℃～30 ℃),which it provides a reliable basis in order to solve the extraction agent of environmental protection, safety and recovery in the process of insoluble sulfur production, the more, it provides broad prospects for its industrialized production.
Insoluble sulfur gradually begins to occupy the main position of the rubber industry at home and abroad. Common sulfur is soluble in CS_2 and insoluble sulfur is not soluble in CS_2, CS_2 is often used in industrial production to extract insoluble sulfur from ordinary sulfur. But CS_2 has a large defect in safety,such as large smell, large toxicity, volatile and explosive. This study was attempted to research the separation effect of the lower toxicity extraction agent-toluene, SZ-54 and styrene on insoluble sulfur crude, and aimed to find the best conditions for the preparation of insoluble sulfur at low temperature(normal temperature). The experiment result shows that the mixture of three kinds of reagent mixed extraction agent is the direction of future research under the condition of low temperature(0 ℃～30 ℃),which it provides a reliable basis in order to solve the extraction agent of environmental protection, safety and recovery in the process of insoluble sulfur production, the more, it provides broad prospects for its industrialized production.
引文
[1]侯宝军,刘红研,汪树军,等.混合萃取剂对不溶性硫黄萃取效果及高温稳定性的影响[J].橡胶工业,2010,57(2):118-120.
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[14]张克娟,夏新兴,强音.苯乙烯对不溶性硫磺的萃取效果研究[J].精细石油化工,2012,29(1):76-79.
[15]王烟霞,李枫,王峰,等.萃取剂对不溶性硫制备的影响及工艺条件优化[J].石油化工,2017,46(8):1017-1021.
[16]黄仁和,李廷希.催化氧化H2S生产不溶性硫磺的新工艺研究[J].山东科技大学学报(自然科学版),2004,23(4):101-104.
[2]杜孟成,王维民.不溶性硫黄的发展现状及评价方法[J].橡胶工业,2015,62(5):312-317.
[3]崔小明.不溶性硫黄的生产技术进展[J].橡胶科技,2011,9(5):11-15.
[4]胡伟庆,黄婉利,吴立报,等.不溶性硫磺应用性能研究[J].当代化工,2015,(3):473-476.
[5]欧阳福生,郝涛远,李跃,等.不溶性硫黄的制备技术[J].化工进展,2015,34(5):1389-1394.
[6]蒋定建,方晓玲.不溶性硫磺生产萃取工艺新型萃取剂的研究[J].广州化工,2010,38(12):144-147.
[7]欧阳福生,毕玉晓,李波,等.萃取剂分子结构对不溶性硫磺分离效果的影响[J].华东理工大学学报(自然科学版),2008,34(4):482-486.
[8]黄伟,崔伟.液相法生产不溶性硫磺[J].上海化工,2003,(2):16-18.
[9]侯文杰.低温熔融法制备不溶性硫磺的稳定剂和萃取剂研究[D].上海:华东理工大学,2012.
[10]罗红妍.不溶性硫磺的试验研究[J].梅山科技,2004,(S2):38-41.
[11]李文灿.不溶性硫磺的合成、改性及其对橡胶性能的影响[D].青岛:青岛科技大学,2014.
[12]Ralph E M.Process for producing insoluble sulfur:US,2667406A[P].1954-01-26.
[13]何建.闪锌矿精矿中伴生金银回收的氧化酸浸工艺研究[D].湘潭:湘潭大学,2014.
[14]张克娟,夏新兴,强音.苯乙烯对不溶性硫磺的萃取效果研究[J].精细石油化工,2012,29(1):76-79.
[15]王烟霞,李枫,王峰,等.萃取剂对不溶性硫制备的影响及工艺条件优化[J].石油化工,2017,46(8):1017-1021.
[16]黄仁和,李廷希.催化氧化H2S生产不溶性硫磺的新工艺研究[J].山东科技大学学报(自然科学版),2004,23(4):101-104.