相关实验视频
Updated: Jun 26, 2025

06:44
Curtain Flow Column: Optimization of Efficiency and Sensitivity
Published on: June 12, 2016
6.5K
关于在不同高度比下两圆柱形断面气旋的分离性能研究
Peikun Liu1, Bo Chen1, Duanxu Hou1
1College of Mechanical & Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
ACS omega
|May 20, 2024
概括
改变两个圆柱形气旋的高度比,可以改善粒子分离. 增加这种比率可以减少粗颗粒在溢出中的错位,并提高整体分离效率.
科学领域:
- 流体动力学 流体动力学
- 颗粒分离技术 颗粒分离技术
- 化学工程是化学工程的组成部分.
背景情况:
- 两个圆柱形气旋调节循环流量,以抑制颗粒的错位.
- 圆柱形高度比对气旋性能的影响仍未得到充分研究.
研究的目的:
- 为了研究高度比对颗粒运动和分离性能在两个圆柱形断面气旋的影响.
- 为了确定最佳的高度比,提高分离精度和减少颗粒错位.
主要方法:
- 使用数值模拟来分析粒子行为和分离特征.
- 进行了物理测试,以验证模拟结果,并评估现实世界的性能.
主要成果:
- 增加高度比率降低了分离切割尺寸,并提高了中型和粗颗粒的分离精度.
- 在溢出中粗颗粒的错位随着高度比较高而显著减少.
- 确定了最佳的高度比,以最大限度地提高中等 (H1/H0 = 0.47) 和粗粒 (H1/H0 = 0.17) 的分离效率.
- 高度比为H1/H0 = 0.30有效地减少了细颗粒在下流中的错位.
结论:
- 调整高度比是一个可行的策略,以抑制粗颗粒在溢出中的错位.
- 优化高度比可以显著提高两个圆柱形截面气旋的整体分离性能.
相关概念视频
Optimizing Chromatographic Separations
387
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
387
Centrifugation
2.2K
Centrifugation is a separation technique based on differences in density or size. It is commonly used to separate solids from aqueous interferents. During centrifugation, the sample is placed in centrifugation tubes and spun at high angular velocity, which allows centrifugal force to act differentially on the different densities or masses of the components. After spinning, the supernatant liquid is decanted. Depending on the specific application, either the pellet or the supernatant is retained...
2.2K
High-Performance Liquid Chromatography: Introduction
2.0K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
2.0K
Steady, Laminar Flow Between Parallel Plates
173
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
173
Typical Model Studies
354
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
354
Column Efficiency: Plate Theory
600
Band broadening in a chromatography column is measured by its efficiency. This is determined by the number of theoretical plates (N). Theoretical plate theory states that a separation column consists of a continuous series of imaginary plates where solute equilibration occurs between stationary and mobile phases.
A higher number of theoretical plates signifies better column efficiency and improved separation capabilities. Plate height affects bandwidth and separation quality; it is inversely...
A higher number of theoretical plates signifies better column efficiency and improved separation capabilities. Plate height affects bandwidth and separation quality; it is inversely...
600

