共查询到20条相似文献,搜索用时 61 毫秒
1.
2.
4.
5.
静态混合器的开发及应用 总被引:3,自引:0,他引:3
1概述静态混合器是国外七十年代初发展起来的新型先进设备,该设备本身没有运动部件,而是依靠设备的特殊结构和流体的运动,使互不相落的液体各自分散,彼此混合起来达到良好的混合效果。现在世界上仍有三十几种静态混合器,尽管其结构各不相同,但按其装填在管状外壳内单元所起作用来划分,可分为三大类.一类是对沉体起到切割作用.二类是使流体旋转.三类是流道形状和截面积发生变化使流体自行“搅拌”。它们的作用都能使互不相港的流体达到良好的混合效果,也能使固态颗粒很好地混合.现在国外静态混合器主要有五种:凯尼斯队ehiCS)… 相似文献
6.
7.
8.
9.
10.
11.
12.
静态混合器在环保领域的应用 总被引:4,自引:0,他引:4
简述静态混合器的概念和特点 ,指出静态混合器在环保领域的应用及应用原理 ,列举了若干应用实例 ,期望能促进在环保领域进一步推广应用静态混合器。 相似文献
13.
14.
15.
新型静态混合器湍流特性数值模拟 总被引:1,自引:0,他引:1
结合新型静态混合器的结构特点,利用CFD软件采用标准的k-ε湍流模型对新型静态混合器内的湍流状态下的三维不可压缩流场进行数值模拟。通过研究新型静态混合器脉动速度分布的对称性及其间歇性发现:新型静态混合器内3个方向速度分量的偏斜因子和平坦因子分布具有周期性;x和z2个方向的速度概率密度分布存在较小不对称性且其平坦因子数值在2.3—5.7变化,径向偏斜因子的数量级均较轴向小1个数量级。采用新的数据处理方法计算和分析得到了不同长径比下新型静态混合器湍流流动阻力统一特性曲线及其关联式。 相似文献
16.
Seyyed Mahdi Hosseini Kiyanoosh Razzaghi Farhad Shahraki 《American Institute of Chemical Engineers》2019,65(3):1126-1133
Four-blade static mixer was designed for inline mixing of Newtonian fluids at Reynolds numbers from 700 to 6800. The mixer consists of four equally spaced blades mounted on cylindrical housing with 45° rotation relative to the circumference. It was tested in three different compartments of 6, 8, and 10 mixing elements; each element rotated 45° relative to the adjacent one. Multipoint sampling was used to measure concentration downstream the mixer. The mixing quality was measured by the coefficient of variance (CoV). The CoV decreases as the energy input per unit mass increases. This effect is more pronounced when the number of mixing elements increases. For the case of 10 mixing elements, a good mixing performance (typically more than 95% mixedness or CoV < 0.05) achieved, although a marginally good mixing performance could also be achieved by eight mixing elements. The friction factors were correlated as f = C1/Re + C2/Ren with an average deviation of ±10% from experimental data. Furthermore, experimental friction factors were compared with existing models. For a wide range of Reynolds numbers, the friction factors are apparently smaller than those from SMV, KMX, and baffle-type static mixers. © 2018 American Institute of Chemical Engineers AIChE J, 65: 1126–1133, 2019 相似文献
17.
Mushtak Al‐Atabi 《加拿大化工杂志》2011,89(3):550-554
This paper examines the performance of a novel static mixer comprising a circular tube fitted with eight alternating equi‐spaced semicircular rigid insert (baffles) as the mixer elements. Experiments were carried out to obtain the coefficient of variance (CoV) for the mixing of two streams of water and brine for Reynolds number between 60 and 700. Decreasing the baffles clearance ratio significantly reduces the CoV but at a cost of an increase in the pressure drop across the static mixer. The presence of the mixing elements (baffles) promotes a non‐laminar, turbulent‐like flow which considerably enhances the mixing. The static mixer described here represents a cost effective, easy to manufacture, low maintenance, and flexible alternative to the more sophisticated static mixers currently in use. 相似文献
18.
根据共混纺丝的要求,开发了高效圆盘静态混合器,将静态混合圆盘安装在现有纺丝组件内进行了冷态模拟实验和纺丝试验.结果表明:静态混合圆盘具有明显的混合效果,应用于聚丙烯/铁粉共混纺丝,在原有组件内装入6块静态混合圆盘后,纺丝、拉伸性能更好,纤维中铁粉分布更细化、均匀. 相似文献
19.