研究了将丁苯橡胶装置苯乙烯回收单元在脱除苯乙烯时产生的冷凝水用于生产丁苯橡胶1500时对聚合过程和产物性能的影响,并提出了应对措施。结果表明,苯乙烯回收单元汽提塔在生产平稳时冷凝水的水质稳定;占总用水质量分数30%的冷凝水被回用于聚合体系时使反应时间延长,产物门尼黏度偏高,力学性能不佳;无回用水时的聚合规律为随着反应温度升高、转化率控制在中下限及引发剂和调节剂用量适当增加,产物的门尼黏度呈下降趋势;据此,调整反应温度为(6.5±0.5)℃,控制转化率为(68±2)%,引发剂用量为0.075份(质量),调节剂用量为0.29份(质量)且分2次加入,占总用水质量分数30%的回用水对聚合过程和产物性能的影响可基本消除。 The influence of the condensed water from the styrene recovery unit of the styrene-butadiene styrene unit on the styrene production to the production of styrene butadiene rubber (SBR-1500) was investigated. And the countermeasures were put forward. The results show that the water quality of the condensed water in the stripping tower of styrene recovery unit is steady when the production is stable. When 30% of the total water content is returned to the polymerization system, the reaction time is prolonged and the Mooney viscosity of the product is high. Poor performance; no water when the polymerization law as the reaction temperature increases, the conversion rate control in the lower limit and the amount of initiator and regulator increased appropriately, the product Mooney viscosity showed a downward trend; accordingly, adjusting the reaction temperature (6.5 ± 0.5) ℃, the control conversion rate was (68 ± 2)%, the amount of initiator was 0.075 parts by mass, the dosage of regulator was 0.29 parts by mass, The effect of% recycled water on the polymerization process and product performance can be basically eliminated.