苯乙烯装置聚合物的产生与预防研究
|
摘要
针对抚顺石化公司石油二厂苯乙烯装置生产过程中出现的苯乙烯聚合问题,结合苯乙烯独特的分子结构和化学性质,分析了工业生产过程中极易发生聚合的原因。当苯乙烯分子发生聚合时,产生的反应热能促使苯乙烯形成新的自由基,进而引发新的聚合反应。提出了在苯乙烯生产过程中尽量降低单体苯乙烯存在温度,减少在单一设备中的停留时间,提高原料乙苯纯度,苯乙烯在精馏单元加入DNBP阻聚剂和在苯乙烯贮存容器内加入TBC阻聚剂等有效防止苯乙烯聚合的措施,大大降低了苯乙烯聚合物,促进了苯乙烯装置平稳生产和长周期运行,进而提高苯乙烯装置经济效益。
In view of the styrene polymerization problem in the operation of styrene unit in Fushun petrochemical company No.2 refinery, combined with the unique molecular structure and chemical properties of styrene, the reasons for the polymerization problem in industrial production process were analyzed. During the polymerization of styrene molecules, the generated reaction heat can cause styrene to form new radicals, which initiates new polymerization reaction. So some measures to effectively prevent the polymerization of styrene were adopted, such as decreasing the temperature of monomer styrene in the process, reducing the residence time in a single equipment, increasing the purity of raw material ethylbenzene, adding DNBP polymerization inhibitor in the distillation unit and TBC inhibitor in the styrene storage container, and so on. The measures promoted the stable and long-term operation of the styrene unit to further improve the economic efficiency of the styrene unit.
In view of the styrene polymerization problem in the operation of styrene unit in Fushun petrochemical company No.2 refinery, combined with the unique molecular structure and chemical properties of styrene, the reasons for the polymerization problem in industrial production process were analyzed. During the polymerization of styrene molecules, the generated reaction heat can cause styrene to form new radicals, which initiates new polymerization reaction. So some measures to effectively prevent the polymerization of styrene were adopted, such as decreasing the temperature of monomer styrene in the process, reducing the residence time in a single equipment, increasing the purity of raw material ethylbenzene, adding DNBP polymerization inhibitor in the distillation unit and TBC inhibitor in the styrene storage container, and so on. The measures promoted the stable and long-term operation of the styrene unit to further improve the economic efficiency of the styrene unit.
引文
[1]吴指南.基本有机化工工艺学[M].北京:化学工业出版社,1990:170-220.
[2]潘祖仁.高分子化学[M].北京:化学工业出版社,1997:25-96.
[3]张玉光.防止苯乙烯生产过程中发生聚堵的措施[J].辽宁科技大学学报,2009,32(6):605-608.
[4]曹学义.苯乙烯储存聚合原因分析及控制措施[J].齐鲁石油化工,2010,38(2):111-114.
[5]王民翰.如何有效防止苯乙烯生产过程中的聚合现象[J].浙江化工,2012,43(5):7-10.
[6]刘双明,刘安,施泳.苯乙烯本体聚合动力学研究[J].石油化工,1990,19(8):540-545.
[7]王刚.苯乙烯储罐中聚合物升高的原因分析及改造措施[J].山东化工,2016,45(23):100-102.
[8]翟士刚.苯乙烯防聚合原因分析及应对措施[J].石油石化绿色低碳,2018,3(2):43-49.
[9]张建.苯乙烯精馏阻聚剂性能分析及阻聚措施[J].化工进展,2014,33(1):312-316.
[10]焦书建,王振龙,王光耀.苯乙烯装置聚合物生成原因分析[J].广州化工,2013,11:223-224.
[11]赵志强.苯乙烯生产中生成聚合物的原因分析及对策[J].石化技术,2002,9(4):224-227.
[12]杜鹏,史军军,蒽雷,等.抽提蒸馏过程中苯乙烯聚合机理的研究[J].石油炼制与化工,2014,45(5):11-15.
[13]佟以超.苯乙烯生产过程中发生聚堵的原因分析及预防措施[J].辽宁化工,2006,10:586-589.
[2]潘祖仁.高分子化学[M].北京:化学工业出版社,1997:25-96.
[3]张玉光.防止苯乙烯生产过程中发生聚堵的措施[J].辽宁科技大学学报,2009,32(6):605-608.
[4]曹学义.苯乙烯储存聚合原因分析及控制措施[J].齐鲁石油化工,2010,38(2):111-114.
[5]王民翰.如何有效防止苯乙烯生产过程中的聚合现象[J].浙江化工,2012,43(5):7-10.
[6]刘双明,刘安,施泳.苯乙烯本体聚合动力学研究[J].石油化工,1990,19(8):540-545.
[7]王刚.苯乙烯储罐中聚合物升高的原因分析及改造措施[J].山东化工,2016,45(23):100-102.
[8]翟士刚.苯乙烯防聚合原因分析及应对措施[J].石油石化绿色低碳,2018,3(2):43-49.
[9]张建.苯乙烯精馏阻聚剂性能分析及阻聚措施[J].化工进展,2014,33(1):312-316.
[10]焦书建,王振龙,王光耀.苯乙烯装置聚合物生成原因分析[J].广州化工,2013,11:223-224.
[11]赵志强.苯乙烯生产中生成聚合物的原因分析及对策[J].石化技术,2002,9(4):224-227.
[12]杜鹏,史军军,蒽雷,等.抽提蒸馏过程中苯乙烯聚合机理的研究[J].石油炼制与化工,2014,45(5):11-15.
[13]佟以超.苯乙烯生产过程中发生聚堵的原因分析及预防措施[J].辽宁化工,2006,10:586-589.