Journal
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
Volume 100, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2022.104465
Keywords
Gas-liquid cylindrical cyclone; Flow regime; Dimensionless pressure; Pressure control; Droplet size
Categories
Funding
- National Key Research and Development Program of China [2019YFC0312400]
- Guangdong Basic and Applied Basic Research Foundation [2020A1515110155]
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This paper introduces a pressure control scheme for GLCC to achieve fast and stable gas-liquid separation. Experimental results show that increasing liquid superficial velocity only increases the distribution of small droplets, and the droplet size distribution at high dimensionless pressure is larger compared to that at low dimensionless pressure.
Marine production platforms and subsea production systems desperately need compact and highly efficient gas-liquid separators. The gas-liquid cylindrical cyclone (GLCC), which mainly utilizes gravitational and centrifugal forces to achieve separation, can be an superior choice. Herein, a pressure control scheme is proposed that allows the GLCC to realize fast and stable gas-liquid separation. The droplet size distributions measured by a Malvern RTSizer indicated that increasing the liquid superficial velocity only increased the distribution of small droplets at the inlet. The droplet size distribution of the down sampling at a high dimensionless pressure was larger than that at a low dimensionless pressure, which can be explained by the droplet migration model. As the dimensionless pressure decreased, four flow regimes were experimentally observed: annular flow, churn flow stratified flow, falling droplets, and pure gas. Electrical resistance tomography measurement results indicated that better convergence of the bubbly filament was achieved at a higher dimensionless pressure.
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