Abstract
With the further development of oilfield, liquid-gas separation has become an essential problem. Cylindrical cyclone separators are popular in the industrial process due to the advantage that they are simple, compact, and inexpensive to manufacture. In this paper, a three-dimensional turbulence model including Reynolds stress model was established to describe the mixture flow field in the separator. Through the numerical simulation, the separation efficiency was investigated under different parameter cases such as separator length, gas phase outlet diameter, and inlet shape. It can be indicated from the simulation results that the separation efficiency decreases with the increase of the separator length, and the separation efficiency increases firstly and then decreases with the increase of the gas phase outlet diameter as well as the liquid phase outlet. Furthermore, the rectangular inlet is more suitable than the circular inlet with the separation efficiency changing from 66.45% to 79.04%. In the end, the optimal geometrical structure was presented with separation efficiency of 86.15%.
Highlights
For the past several decades, conventional gravity based separators, such as settling tanks, have been extensively used in industries
Fluid mixture enters in the cyclone and makes a swirl motion; because of the centrifugal force, the dense phase of the mixture gains a relative motion in the radial direction and is separated from the mixture
The cyclone separator (CCS) utilizes the energy obtained from the fluid pressure gradient to create rotational fluid motion instead of using electricity and other types of energy, which leads to relative economy in power usage and flexibility
Summary
For the past several decades, conventional gravity based separators, such as settling tanks, have been extensively used in industries They are bulky and expensive and show slow separation. Due to these defects, in recent years, the industry has shown keen interest in the development and application of alternatives to the conventional separators. In recent years, the industry has shown keen interest in the development and application of alternatives to the conventional separators One of such alternatives is the cylindrical cyclone separator (CCS). Unlike the slow settling of particles within a settling tank, a cyclone separator shows fast separation and utilizes less space It is a cylinder installed with a downward inclined tangential inlet and two outlets provided at the top and the bottom, respectively. The CCS utilizes the energy obtained from the fluid pressure gradient to create rotational fluid motion instead of using electricity and other types of energy, which leads to relative economy in power usage and flexibility
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