Abstract
The gas-liquid two-phase flow within a double inlet cyclone for natural gas separation was numerically simulated using the discrete phase model. The numerical approach was validated with the experimental data, and the comparison results agreed well with each other. The simulation results showed that the strong swirling flow produced a high centrifugal force to remove the particles from the gas mixture. The larger particles moved downward on the internal surface and were removed due to the outer vortex near the wall. Most of the tiny particles went into the inner vortex zones and escaped from the up-outlet. The swirling flow was concentric due to the design of the double inlet for the cyclonic separator, which greatly improved the separating efficiency. The separating efficiency was greater than 90% with the particle diameter of more than 100 μm.
Highlights
Natural gas is relatively a clean source of energy, and its demand is increasing rapidly with industrialization
The present paper proposes a methodology for the cleaning utilization of natural gas by employing a double inlet cyclone separator to improve the collection efficiency of the gas-liquid two-phase flows
The purpose of the current study is to propose a methodology to remove the liquids from natural gas using a double inlet cyclone separator
Summary
Natural gas is relatively a clean source of energy, and its demand is increasing rapidly with industrialization. The water droplets need to be separated out from natural gas by some means to protect the pipelines from corrosion and hydrate formation. The Lee type cyclones (Kim & Lee, 1990), the semispherical cyclones (Ogawa, Hironaka, Kato, & Seito, 1991), the PV type cyclones (Chen, Sun, & Shi, 2001), the reverse flow cyclones (Sun, Chen, & Shi, 2005; Tien & Ray, 2000), the dynamic cyclones (Jiao, Zheng, Wang, & Sun, 2008), and the square cyclones (Raoufi, Shams, & Kanani, 2009; Su & Mao, 2006), have been designed to meet the demands. Compared with the Euler-Euler model, the Lagrangian approach, can describe the motion of a single particle in detail, and correspondingly obtain the separation efficiency for the cyclone separators
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