化工进展 ›› 2022, Vol. 41 ›› Issue (10): 5188-5199.DOI: 10.16085/j.issn.1000-6613.2022-0799

• 化工过程与装备 • 上一篇    下一篇

操作参数对三相卧螺离心机油水砂分离性能影响模拟及实验分析

朱明军1,2(), 胡大鹏2()   

  1. 1.宿州学院化学化工学院,安徽 宿州 234099
    2.大连理工大学化工学院,辽宁 大连 116024
  • 收稿日期:2022-05-05 修回日期:2022-06-12 出版日期:2022-10-20 发布日期:2022-10-21
  • 通讯作者: 胡大鹏
  • 作者简介:朱明军(1988—),男,博士,研究方向为多相流分离技术。E-mail:zhumj07420418@163.com
  • 基金资助:
    安徽省高校学科(专业)拔尖人才学术资助项目(gxbjZD2021082);横向课题“基于上传换发光的高灵敏传感器的研发”(2022xhx019)

Simulation and experimental analysis of the influence of operating parameters on oil-water-sand separation performance of three-phase decanter centrifuge

ZHU Mingjun1,2(), HU Dapeng2()   

  1. 1.School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 234099, Anhui, China
    2.School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2022-05-05 Revised:2022-06-12 Online:2022-10-20 Published:2022-10-21
  • Contact: HU Dapeng

摘要:

首先提出一种新型可调溢流堰板式三相卧螺离心机主体结构,其内部设置了径向排油通道以及位置和大小可调节的溢流堰板。其次,使用计算流体力学软件Fluent、基于欧拉-欧拉多相流模型,对三相卧螺离心机流场及分离性能进行数值模拟,建立三维流域模型、进行网格划分及边界条件设定,对油相及固相浓度分布等进行分析。之后确定实验工艺流程图,搭建油水砂三相分离实验系统平台,建立三相分离实验系统装置,制定实验步骤进行实验研究及测量工作。分别从转鼓转速、处理量等研究了各自对固相回收率、油相回收率、油在滤饼中的损失及油在水中的损失等的影响规律,并从出砂含固、出油含油、出渣含油及出水含油质量浓度等方面对数值模拟结果进行实验验证。

关键词: 三相卧螺离心机, 离心分离, 多相流, 计算流体力学, 分离效率

Abstract:

Firstly, a new main structure of three-phase decanter centrifuge with adjustable overflow weir plate was proposed, in which radial oil discharge channels and overflow weir plates with adjustable position and size were set up. Secondly, using the computational fluid dynamics software Fluent, based on the Euler-Eulerian multiphase flow model, the numerical simulation of the flow field and separation performance of the three-phase decanter centrifuge was carried out. The three-dimensional flow region model was established, and the meshing and boundary conditions were set. The oil phase and solid phase concentration distribution were analyzed. After that, the experimental process flow chart was determined, and an experimental system platform for oil-water-sand three-phase separation was built. In addition, the three-phase separation experimental system device was established, and the experimental steps were formulated for experimental research and measurement. The respective influence laws on the solid phase recovery rate, oil phase recovery rate, oil loss in filter cake and oil loss in water were studied from the rotating speed of the drum and the treatment capacity. Furthermore, the numerical simulation results were verified experimentally from the aspects of solid-contained of sand outlets, oil-contained of oil outlets, oil-contained of sand outlets, oil-contained mass concentration of water outlets.

Key words: three phase decanter centrifuge, centrifugation, multiphase flow, computational fluid dynamics, separation efficiency

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