摘要
以聚丙烯酸、聚丙烯酸钠、聚丙烯酰胺(非离子型)、硫酸铝钾、DAMPE(改性破乳剂)为主要原料,通过复配制备复合调质剂,对油田含油污泥进行调质离心脱油。通过考察固液比、搅拌时间、离心时间、离心转速,确定了含油污泥最佳处理条件。利用单一絮凝实验和正交实验,得到最佳复配絮凝剂,并将其与合成破乳剂DAMPE按一定比例混合,确定最佳配比及调质温度,考察脱油效果。研究结果表明,含油污泥的最佳处理条件为:固液比1∶2、搅拌时间20 min、离心时间30 min、离心转速3600 r/min。破乳剂DAMPE与复配絮凝剂(5 mg/L聚丙烯酰胺+2.5 mg/L聚丙烯酸+5 mg/L聚丙烯酸钠+5 mg/L明矾)按质量比2∶3混合得到的复合调质剂,在最佳处理条件下,调质温度为45℃时的脱油效果最佳,脱油率为95.66%。复合调质-离心处理可以实现油水泥三相分离,是一种有效的含油污泥处理技术。
Using polyacrylic acid,sodium polyacrylate,polyacrylamide(non-ionic),aluminum potassium sulphate,DAMPE(modified demulsifier)as the main raw materials,a compound quenching agent was prepared by compounding,and was applied to oily sludge treatment by tempering and centrifugation.The solid-liquid ratio,stirring time,centrifugal time,and centrifugal speed was investigated to determine the optimal centrifugation conditions.Through the single flocculation and orthogonal experiments,the amount of each flocculant was determined to obtain the best compound flocculant.The compound quenching agent was obtained by combining the best compound flocculant with DAMPE,and the best tempering temperature was determined by investigating the deoiling effect.The results showed that the best treatment conditions for oily sludge were as follows:solid liquid ratio was 1∶2,stirring time was 20 min,centrifugal time was 30 min,centrifugal speed was 3600 r/min.The demulsifier DAMPE and the complex flocculant(5 mg/L polyacrylamide+2.5 mg/L polyacrylic acid+5 mg/L sodium polyacrylate+5 mg/L alum)were mixed at a mass ratio of 2∶3 to obtain a compound quenching agent.Under optimal treatment conditions,when the tempering temperature was 45℃,the deoiling effect was the best and the deoiling rate was up to 95.66%.The composite tempering-centrifugation treatment could realize the three-phase separation of oil cement and was an effective treatment technology for oily sludge.
作者
余兰兰
邢士龙
郑凯
YU Lanlan;XING Shilong;ZHENG Kai(College of Chemistry & Chemical Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,P R of China;The No.2 Petroleum Production Plant,Daqing Oilfield,PetroChina,Daqing,Heilongjiang 163414,P R of China)
出处
《油田化学》
CAS
CSCD
北大核心
2019年第3期540-545,共6页
Oilfield Chemistry
关键词
含油污泥
复配
调质
离心脱油
oily sludge
compounding
tempering
centrifugal deoiling
