竖向进水管布置对ABR液相流态影响的PIV试验研究

发布时间：2018-05-26 11:46

本文选题：折流式厌氧反应器 + 液相流态　；参考：《长江科学院院报》2017年11期

【摘要】：在折流式厌氧反应器(Anaerobic Baffled Reactor,ABR)不同进水管悬空高度和不同进水流量组合的工况下,利用激光粒子图像测速技术(particle image velocimetry,PIV)对ABR的第一格室液相流态进行了研究,测得反应器内降流区和升流区关键截面的流场数据,获得了液相速度和涡量强度与悬空高度的关系曲线;同时研究了相关流场特征,包括流线图谱和涡量场。结果表明:对于ABR的第一格室,合理的进水管悬空高度可以保证良好的进水流态,促使ABR涡量面积分布均匀,有效防止局部沟流和液相死区,确保ABR高效稳定运行。根据试验分析结果,提出了设计时可供参考的进水管悬空高度的取值范围:流量在0.018~0.270 m3/h时,悬空高度的取值范围为230~530 mm;流量在0.558~0.846 m3/h时,悬空高度的取值为530 mm。
[Abstract]:In anaerobic Baffled reactor (ABR), the liquid phase flow in the first chamber of ABR was studied by using the particle image velocimetry (PIV) technique under the conditions of different inlet pipe suspended height and different influent flow rate combinations. The flow field data of the key sections in the downflow region and the upwelling zone in the reactor were measured, and the curves of the relationship between the liquid velocity and vorticity intensity and the suspended height were obtained, and the characteristics of the correlation flow field, including the streamline pattern and the vorticity field, were studied. The results show that for the first compartment of ABR, a reasonable suspended height of the inlet pipe can ensure a good inlet flow state, promote the uniform distribution of ABR vorticity area, effectively prevent local trench flow and liquid phase dead zone, and ensure the efficient and stable operation of ABR. According to the experimental results, the range of the suspended height of the inlet pipe for reference in the design is put forward: when the flow rate is 0.018 ~ 0.270 m3 / h, the range of the suspended height is 230 ~ 530mm, and when the flow rate is 0.558 ~ 0.846 ~ (m3 / h), the value of the suspension height is 530mm.
【作者单位】：四川理工学院过程装备与控制工程四川省高校重点实验室;
【基金】：四川省科技支撑计划项目(2014GZ0132) 自贡市科技局重点项目(2013X12) 四川理工学院创新基金项目(Y2016011)
【分类号】：X703

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