滤料层填设模式对含聚污水过滤性能的影响  

Influence of Filtering Layers Layout-patterns on Filtering Performance of Polymer-flooding Produced Water

作　　者：王志华[1,2] 许云飞 李杰训[1,2] 于雪莹[1] Wang Zhihua;Xu Yunfei;Li Jiexun;Yu Xueying(Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention,Northeast Petrole-um University;Postdoctoral Research Station of Daqing Oilfield Co.,Ltd.)

机构地区：[1]东北石油大学黑龙江省石油石化多相介质处理及污染防治重点实验室 [2]大庆油田有限责任公司博士后科研工作站

出　　处：《石油机械》2018年第12期51-59,共9页China Petroleum Machinery

基　　金：中国博士后科学基金项目"考虑乳化机制影响的水-含蜡原油胶凝过程特性研究"(2017M611349);黑龙江省博士后科学基金项目"含聚污水深度处理工艺运行界限及配套技术研究"(LBH-Z16037);中国石油和化学工业联合会科技指导计划项目"页岩气采出水有机质降解供能脱盐机理及其一体化深度处理可行性研究"(2016-01-04)

摘　　要：为优化含聚污水处理工艺,从压力式过滤器滤料层填设模式多元化设计思路出发,建立以滤料层和垫料层多种模式填设为主体的相应模型,数值模拟研究滤料层填设模式对含聚污水压力式过滤处理效果的影响。研究结果表明:随着污水中含聚质量浓度的增大,过滤流场趋向不稳定特征,且滤料的截污性能变差,在均质滤料过滤含聚污水中,除油率和悬浮物去除率从含聚浓度为150 mg/L时的68. 30%和56. 46%下降到含聚质量浓度为820 mg/L时的37. 14%和29. 06%;滤料层填设从均质模式改变为级配模式时,不同含聚污水的过滤流场均向着稳定特征方向演变,过滤层的截污能力提升,双层级配滤料模式适合于含聚污水的过滤处理;当污水中含聚质量浓度增大至820 mg/L时,双层级配滤料模式下的除油率和悬浮物去除率较均质滤料模式分别提高15. 58%和18. 08%。研究结果可为油田含聚污水个性化处理工艺的构建提供依据。To optimize the process of poly-containing wastewater treatment, considering diversified filter layer layout design of the pressure-type filter, the corresponding model with various filter layer layouts of filter layer and cushion layer is established. Numerical simulation is conducted to study the influence of the filter layer layout on the pressure-type filtration treatment effect of the polymer-flooding produced water. The results show that with the increase of the polymer concentration, the filtration flow field tends to be unstable, and the filtration performance of the filter material is deteriorated. In the homogenized filter layout, the oil removal rate and suspended solids remov- al rate decreased from 68.30% and 56.46% at a polymer concentration of 150 mg/L to 37. 14% and 29. 06% at a polymer concentration of 820 mg/L. By changing the homogeneous filter layer to a grading-distributed filter layer, the filtration flow fields of water with different polymer concentrations go to the direction of stable characteristics, and the filtration performance of the filter layer is improved. The double-layer grading filter mode is suitable for the filtration treatment of the polymer-flooding produced water. When the concentration of polymer in the polymer-flood- ing produced water increases to 820 mg/L, the oil removal rate and suspended solids removal rate of the double- layer grading filter mode is improved by 15.58% and 18.08% compared with the homogeneous filter mode.

关 键 词：滤料级配填设 压力式过滤 过滤流场 过滤效果 含聚污水 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]