锚式改型桨在油泥水热反应釜内的性能研究  

Improved Research on Anchor Propeller in Oil Sludge Hydrothermal Reactor

作　　者：张敏革 李茂[1,2] 聂凡 仝坤 Zhang Min’ge;Li Mao;Nie Fan;Tong Kun(State Key Laboratory of Petroleum Pollution Control;School of Mechanical Engineering,Tianjin University of Science and Technology;CNPC Research Institute of Safety&Environment Technology)

机构地区：[1]石油石化污染物控制与处理国家重点实验室 [2]天津科技大学机械工程学院 [3]中国石油集团安全环保技术研究院有限公司

出　　处：《油气田环境保护》2024年第5期19-25,共7页Environmental Protection of Oil & Gas Fields

基　　金：石油石化污染物控制与处理国家重点实验室开放课题(PPC2020007)。

摘　　要：水热法处理高含水油泥具有脱水效率高,能耗低等优点,文章对水热法水热反应釜单元中的搅拌桨进行研究,提出一种改进式锚式桨,运用CFD-Fluent中单相流及k-ε模型来模拟求解,对比分析3款螺旋倾斜角分别为90°,180°,270°的改型后的搅拌桨,发现90°螺旋倾角的锚式桨叶在轴向循环量、功率消耗、平均剪切速率、无因次轴向速度方面的性能都优于其他桨,综合混合性能较好,该桨使釜内流体在圆周运动的同时,也进行轴向大循环流动,很大程度上促进搅拌釜内流体的轴向循环,在相同转速下使釜内的低速流动区域降低10%左右,能耗比常规锚式桨降低30%左右。The hydrothermal method for treating high-water-content oily sludge offers high dewatering efficiency and low energy consumption.This article studies the stirring propellers in the hydrothermal reactor unit of the hydrothermal method and proposes an improved anchor propeller.Using the single-phase flow and k-ε model in CFD-Fluent for simulation,this study compared and analyzed three modified stirring propellers with helical inclination angles of 90°,180°,270°.It was found that the anchor propeller with 90°helical inclination angle performed better in terms of axial circulation,power consumption,average shear rate,and dimensionless axial velocity compared to the other propellers.The overall mixing performance was optimal,as this propeller induced both circumferential and large axial circulation flows within the reactor.This greatly promoted the axial circulation of fluids in the stirring reactor,reducing the low-velocity flow region within the reactor by approximately 10%at the same rotational speed and reducing energy consumption by about 30%compared to conventional anchor propellers.

关 键 词：水热反应釜 锚式桨 轴向流动 能耗 

分 类 号：X74[环境科学与工程—环境工程] TE992.3[石油与天然气工程—石油机械设备]