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高含气螺旋柱状气液分离器的分离规律研究

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目前关于螺旋气液分离器的研究大多侧重于低含气体积分数条件下的分离性能,高含气体积分数下的分离性能研究相对较少.为此,对比了螺旋气液分离器在低含气和高含气条件下的质量分数场变化规律,并对其在低含气和高含气条件下底流出口含气体积分数、脱液效率、脱气效率以及切向速度场进行了分析.研究结果表明:入口含气体积分数在不断上升过程中,当达到50%时,气相几乎均匀分布在整个气液分离器,气液分离器当中已经没有明显的液相集中区域;当达到70%时,底流含气体积分数最高达到了 49.5%,底流出口携气严重,同时脱液效率由最初的96.9%下降到55.4%,脱气效率由43.9%提高到80.8%.研究结果可为螺旋气液分离器在高含气条件下的模型结构优化设计提供理论依据.
Separation Law of High Gas Content Spiral Cylindrical Gas-liquid Separator
At present,the research on spiral gas-liquid separator mostly focuses on the separation perform-ance under low gas volume fraction conditions,and there is relatively little research on that under high gas volume fraction conditions.To solve this problem,the concentration field changes of the spiral gas-liquid separator under low and high gas content conditions were compared,and the gas volume fraction at apex,liquid removal efficien-cy,degassing efficiency and tangential velocity field of the spiral gas-liquid separator under low and high gas con-tent conditions were analyzed.The research results show that during the continuous increase of the gas volume frac-tion at inlet,when it reaches 50%,the gas phase is almost uniformly distributed throughout the gas-liquid separa-tor,and there is no obvious liquid phase concentration area in the gas-liquid separator.When the gas volume frac-tion at inlet reaches 70%,the maximum gas volume fraction in the bottom flow reaches 49.5%,and the apex car-ries gas severely;meanwhile,the liquid removal efficiency decreases from the initial 96.9%to 55.4%,and the degassing efficiency increases from 43.9%to 80.8%.The research results provide theoretical basis for the model structure optimization design of spiral gas-liquid separators under high gas content conditions.

spiral cylindrical gas-liquid separatorhigh gas contentfluid domain modelnumerical simula-tionflow field distribution

季豪、赵立新、刘琳

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东北石油大学机械科学与工程学院

黑龙江省石油石化多相介质处理及污染防治重点实验室

螺旋柱状气液分离器 高含气 流体域模型 数值模拟 流场分布

2024

石油机械
中国石油天然气集团公司装备制造分公司 中国石油学会石油工程专业委员会 江汉机械研究所 江汉石油管理局

石油机械

CSTPCD北大核心
影响因子:0.737
ISSN:1001-4578
年,卷(期):2024.52(12)