CAJ | 학술논문

针对目前高含水原油采出液采用传统三相分离与热化学分离和电脱水方法存在分离级数和设备多、油水分离效率低、电脱水运行不稳定等问题,在静电预聚结研究基础上,采用自制绝缘电极和乳化液,开展静电聚结脱水研究,使水滴预聚结和沉降分离同时进行。通过静态聚结脱水试验考察了乳化液水含量、电压、温度和沉降时间等因素对静电聚结脱水效果的影响,结果表明乳化液脱水率随温度升高、电压增大和沉降时间延长而提高。其中温度影响最大,电压和沉降时间影响较小。在动态静电聚结原油脱水试验装置上进行验证,同时对不同分离器结构和不同电极结构及进料方式进行了对比,对试验条件进行了优化。动态试验结果表明,在电压2 kV,温度65～70℃,停留时间不大于10 min的条件下,高含水乳化液的脱水率均可达95%以上。
침대목전고함수원유채출액채용전통삼상분리여열화학분리화전탈수방법존재분리급수화설비다、유수분리효솔저、전탈수운행불은정등문제,재정전예취결연구기출상,채용자제절연전겁화유화액,개전정전취결탈수연구,사수적예취결화침강분리동시진행。통과정태취결탈수시험고찰료유화액수함량、전압、온도화침강시간등인소대정전취결탈수효과적영향,결과표명유화액탈수솔수온도승고、전압증대화침강시간연장이제고。기중온도영향최대,전압화침강시간영향교소。재동태정전취결원유탈수시험장치상진행험증,동시대불동분리기결구화불동전겁결구급진료방식진행료대비,대시험조건진행료우화。동태시험결과표명,재전압2 kV,온도65～70℃,정류시간불대우10 min적조건하,고함수유화액적탈수솔균가체95%이상。
To solve the problems of numerous separation stages,more equipment,lower separation efficiency and unstable running of electric dehydration in conventional separation process of three phase separation,thermal chemistry separation and electric dehydration treatment,researches on electrostatic coalescence for high water content oil is developed based on the former studies on pre-coalescence by using complex electrode and emulsion made in laboratory.The impacts of water content of emulsion,electric voltage,temperature and residence time etc on the dehydration performance of emulsion by electrostatic coalescence were investigated through static experiments and were then validated and optimized through the dynamic experiments.The results show that the dehydration rate of emulsion increases with increase of temperature,voltage and residence time.In these impact factors,temperature has the greatest impact,followed by voltage and residence time.At the same time,the different separator constructions,different electrode structures and different feedings are compared and testing conditions are optimized.The dynamic experiments results demonstrate that,under the conditions of 2 000 V voltage,65~70 ℃ temperature and the maximum resident time of 10 minutes,the dehydration rate is over 95%.