Method And Technology To Determine The Separation Particle Size of Hydrocyclone

Date: 2021-09-16     From: Longding     Author: admin

Hydrocyclone is one kind of highly efficient separating device for heteropical system based on centrifugal sedimentation principle, and it is widely used in chemical engineering, petroleum, and mining industries because o fits advantages such as simple structure, low cost, large capacity, and high efficiency. For a long time, how to increasing the classification efficiency, improving the classification effect for high concentration fine particles and research and development of hydrocyclone with small separation diameter and high separation sharpness are always the main subjects in the hydrocyclone research field.

The separation particle size is an important technical indicator of the hydrocyclone separation process. Its size is related to the structural parameters, operating variables, and material properties of the cyclone. There are two kinds of separation particle size, actual separation particle size and corrected separation particle size. The actual separation particle size is the particle size corresponding to the distribution rate of 50% on the actual distribution curve of the cyclone. Commonly used d50 said. The corrected separation particle size is the particle size corresponding to the distribution rate of 50% on the corrected distribution curve. Commonly usedThe corrected separation particle size is larger than the actual separation particle size and has a wide range of uses. d50c means that it takes into account the influence of short-circuit current.

The method for determining the separation particle size of the hydrocyclone includes the following steps:

1. Determine the structural parameters, operating parameters and physical parameters of the materials to be separated. The structural parameters of the hydrocyclone include inlet structure and size, column structure and size, overflow pipe structure and size, cone section structure and size, and grit pipe section structure and size. The operating parameters of the target working condition include feed pressure and feed concentration. The physical parameters of the material to be separated include the density and viscosity of the liquid and gas phase, the particle size composition, and density of the solid phase.

2. The calculation model of the flow field is established and discretized according to the above parameters, t, and the boundary conditions and initial conditions of the calculation are determined at the same time.

3. Using computational fluid dynamics commercial software to perform simulation calculations.