摘要
针对石油树脂生产水洗沉降系统经常产生大量碱泥,各沉降水洗罐压差增大,导致管线堵塞等的问题,考察了4种破乳剂的破乳效果及对废水的影响。结果表明,A型和D型破乳效果相当,沉降水洗系统的油相中没有W/O乳状液,水相中没有O/W乳状液。未加破乳剂前的废水,COD>5 g/L、油的质量浓度>40 mg/L,碱泥产生量>2 t/d,加入A型或D型破乳剂(加入量0.15～0.550 mg/L)后外排污水COD<1.2 g/L、油的质量浓度<30 mg/L,碱泥产生量<1.5 t/d,大大降低了后期的污水处理成本。该方法指导工业装置生产。
Aiming at the problems that large amount of alkali sludge often produced in the water-washing settling system of petroleum resin production, the pressure difference of each settling water-washing tank increased, which resulted in pipeline blockage, the demulsification effect of four demulsifiers and their influence on wastewater were investigated. The results showed that the demulsification effects of type A and D were similar. There was no W/O emulsion in the oil phase and no O/W emulsion in the water phase of the sedimentation washing system. Wastewater without demulsifier had COD over 5g/L, oil mass concentration over 40 mg/L, alkali sludge production over 2t/d, after adding A or D type demulsifier (0.15~0.55 mg/L) COD less than 1.2 g/L mass concentration of oil less than 30 mg/L and alkali sludge production less than 1.5t/d, which greatly reduced the cost of sewage treatment in the later period. The experimental results showed that this method had guiding significance for industrial plant production.
作者
卢建国
赵洪福
LU Jianguo;ZHAO Hongfu(Xinjiang Tianli Petrochemical Holding Group Co., Ltd. Karamay, Xinjiang 833699)
出处
《化工生产与技术》
CAS
2019年第1期32-33,45,I0004,共4页
Chemical Production and Technology
关键词
聚偏氟乙烯
悬浮聚合
分散剂
形貌
粒径
demulsifier
petroleum resin washing settlement sewage
COD
oil in water
alkali mud
