High quality cyclone dust collector separator Machinery cyclone dust collector

CYCLONE DUST COLLECTOR SEPARATOR WORKING PRINCIPLE

1. Cyclonic separation is a method of removing particulates from an air, gas or liquid stream, without the use of filters, through vortex separation method. The method can also be used to separate fine droplets of liquid from a gaseous stream.
2. A high speed rotating air flow is established within a cylindrical or conical container called a cyclone. Air flows in a helical pattern, starting from the top wide end of the cyclone and ending at the bottom narrow end then the air stream moves in a straight path through the center of the cyclone and comes out from the top.

3. Larger particles in the rotating stream have too much inertia to follow the tight curve of the stream, due to this they strike the outside wall, and then fall to the bottom of the cyclone from where they can be removed easily.

Abstract

1. Cyclones are the most common dust-removal systems used in combined cycle fluidized bed combustion boilers. Analysis of a cyclone separator combining flow and structural aspects is carried out using detailed three dimensional finite element modeling including stiffeners and supporting arrangement. The fluid flow study involves the solution of continuity, energy and Navier-Stokes equations.

2. The fluid analysis gives the variation of pressure on cyclone shell, which in turn is imparted on the structural model using fluid structure interface routine. The pressure distribution obtained from the fluid-flow analysis is mapped on to the structure. Then a linear static analysis is performed considering thermal, wind and seismic loads besides the pressure loads. The results for various loads include the reaction forces at the supports and stress levels in the cyclone. The stresses are checked against the allowable values as per Indian Standard Structural Codes.

3. A separate computer code is developed and is interfaced with the FEM program. Results indicate higher stresses in some of the beam stiffeners and at support locations. These are suitably modified and a reanalysis confirmed the stresses to be within limits. The analysis methodology combining the fluid, structure and code requirement developed shall be very useful for the design improvement and safe operation of a cyclone separator.

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