化学法丙烯酰胺中铜离子的影响及控制
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摘要
化学法丙烯酰胺作为驱油用聚丙烯酰胺的主要原料,其单体所含的杂质铜直接影响着下游高品质聚合物的生产。采用超高分子量聚丙烯酰胺合成技术,围绕铜离子的来源、产生的影响以及铜离子的控制方法等方面进行研究讨论。结果表明:当单体中铜离子含量超过0.2ppm时,会加快聚合反应速度,降低聚合物分子量,是影响下游聚合生产的关键因素;研究分析了不同处理介质和精制路线的优缺点。结果表明:ZGC151型阳离子树脂有较好的除铜效果,且单独的阳离子交换树脂精制是简化生产工艺,降本增效的可行技术手段。该实验的研究结果可作为日后同行业工艺优化的基础和参考。
As the main raw material of polyacrylamide for oil displacement, the copper in the monomer affects the production of high quality polymers downstream directly. The source of copper ion, the influence and the control method were discussed in this paper by using ultra high molecular weight polyacrylamide synthesis technology. The results showed that:When the content of copper ion in monomer exceeds 0.2ppm,the reaction speed will be accelerated and the molecular weight of the polymer will be reduced, which is the key factor affecting the downstream polymerization production;The advantages and disadvantages of different treatment media and refining routes were studied and analyzed. The results showed that:ZGC151 cationic resin has good copper removal effect, and the purification of single cation exchange resin is a feasible technical means to simplify production process, reduce cost and increase efficiency. The results of this experiment can serve as the basis and reference for future optimization of the same industry process.
As the main raw material of polyacrylamide for oil displacement, the copper in the monomer affects the production of high quality polymers downstream directly. The source of copper ion, the influence and the control method were discussed in this paper by using ultra high molecular weight polyacrylamide synthesis technology. The results showed that:When the content of copper ion in monomer exceeds 0.2ppm,the reaction speed will be accelerated and the molecular weight of the polymer will be reduced, which is the key factor affecting the downstream polymerization production;The advantages and disadvantages of different treatment media and refining routes were studied and analyzed. The results showed that:ZGC151 cationic resin has good copper removal effect, and the purification of single cation exchange resin is a feasible technical means to simplify production process, reduce cost and increase efficiency. The results of this experiment can serve as the basis and reference for future optimization of the same industry process.
引文
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[2]张冬升.丙烯酰胺工艺技术研究[J].精细与专业化学品,2016,24(8):48-50.
[3]马跃香.胡玉国.蔡瑞娟.超高分子量聚丙烯酰胺生产工艺研究与应用[J].石油与天然气化工,2002, 31(6):323-325.
[4]王全飞.Cu骨架水合法丙烯酰胺水溶液精制工艺的研究[J].工程科技与产业发展,2016,(8):110-111.
[5]王媛媛,陶兆林,万东.丙烯酰胺生产过程中的闪蒸提纯工艺探讨[J].重庆科技学院学报,2016,18(4):70-71.
[6]于驰,王刚,陈峰.亚铜离子在聚丙烯酰胺聚合反应中的作用及分析方法[J].辽宁化工,2003,32(2):98-100.
[7]常惠联.丙烯酰胺的精制[J].化工科技市场,2003,(10):20-22.
[8]白雪,孙秀云,吴珊珊.国产树脂与进口树脂在苯酚精制工艺中的性能对比分析[J].吉林化工学院学报,2014,31(3):26-29.
[9]戴永.丙烯酰胺精制用树脂选型的研究.硕士学位论文[D].黑龙江大学,2011.6.
[10]寇建朝,于萍,赵承军.甲苯法生产己内酰胺水溶液的吸附精制工艺试验研究[J].化工进展,2005,24(6):661-665.
[11]董亮,许扬,姜鸿涛.浅谈生物法丙烯酰胺精制用树脂的选型[J].中国化工贸易,2014,6(23):87-88.
[12]腾山.5万吨/年丙烯酰胺装置精制塔国产树脂使用问题分析及解决方案探讨[J].中国高新技术企业,2011,(28):66-67.