首页|逆流式双螺旋叶片气液固多相旋流分离特性

逆流式双螺旋叶片气液固多相旋流分离特性

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
针对海洋平台空间的局限性和天然气水合物开采特殊工况,设计了一种结构紧凑、分离效率较高、维护成本低的逆流式双螺旋叶片气液固多相旋流分离器,以期实现海上平台天然气、泥质粉砂和海水多相混流的高效分离.综合高含气、高流量、小粒径等因素耦合作用,建立气液固多相分离湍流数学模型,采用SIMPLE压力-速度耦合算法进行求解,揭示螺距、螺旋叶片头数和螺旋圈数等叶片结构参数对气液固多相旋流分离性能的影响规律;并依据气液固多相旋流分离双螺旋叶片的单因素优化结果,量化分析入口流速、含气体积分数、泥质粉砂粒径等生产参数对气液固多相旋流分离性能的影响程度.研究结果表明:当螺旋叶片的螺距为 70 mm、螺旋头数为2 且螺旋圈数为3 时,逆流式双螺旋叶片气液固多相旋流分离性能最佳;增大入口流速可有效提高分离效率,入口流速达到3.0 m/s时,气、固两相分离效率分别提高至 98.6%和 83.2%;而含气体积分数由30%增至45%时,气相分离效率由99.4%降至96.5%,且气相出口含气体积分数由81.1%增至91.9%;泥质粉砂的粒径尺寸会影响分离效率,粒径尺寸为 70 um时,分离效率可达93.4%.所得结论可为适用于天然气水合物开采的气液固多相分离器的设计和优化提供参考.
Gas-Liquid-Solid Cyclone Separation Characteristics of Reverse Flow Duplex Spiral Blade
Aiming at the spatial limitation of offshore platform and special working conditions of gas hydrate exploitation,a reverse flow duplex spiral blade gas-liquid-solid cyclone separator with compact structure,high separation efficiency and low maintenance cost was designed,in the hope of realizing efficient separation of mixed flow of natural gas,muddy silt and seawater on offshore platforms.After having comprehensively considered the coupling effect of factors such as high gas content,high flow rate and small particle size,a mathematical model for gas-liquid-solid separation turbulence was built,and the SIMPLE pressure-velocity coupling algorithm was used to carry out solution,revealing the influence of blade structure parameters such as pitch,number of spiral blade heads and spiral turn on the gas-liquid-solid cyclone separation performance;then,based on the single factor opti-mization results of the gas-liquid-solid cyclone separation duplex spiral blade,the influence of production parame-ters such as inlet flow rate,gas volume fraction and muddy silt size on the gas-liquid-solid cyclone separation per-formance was quantitatively analyzed.The research results show that when the pitch of the spiral blades is 70 mm,the number of spiral heads is 2 and the spiral turn is 3,the gas-liquid-solid cyclone separation performance of the reverse flow duplex spiral blade is the best;increasing the inlet flow rate can effectively improve the separation effi-ciency;when the inlet flow rate reaches 3.0 m/s,the gas and solid separation efficiency is increased to 98.6%and 83.2%respectively;when the gas volume fraction increases from 30%to 45%,the gas phase separation effi-ciency is decreased from 99.4%to 96.5%,and the gas volume fraction at gas phase outlet is increased from 81.1%to 91.9%;the particle size of muddy silt can affect the separation efficiency;when the particle size is 70 μm,the separation efficiency can reach 93.4%.The conclusions provide reference for the design and optimization of gas-liquid-solid separators suitable for gas hydrate exploitation.

gas hydrate exploitationmultiphase cyclone separationspiral reverse flowduplex spiral bladeseparation performance

王浩凯、刘新福、李清平、姚海元、刘春花、李明

展开 >

青岛理工大学 机械与汽车工程学院

中海油研究总院有限责任公司

中国石油大学(华东) 机电工程学院

中国石化大连石油化工研究院

展开 >

天然气水合物开采 多相旋流分离 螺旋逆流式 双螺旋叶片 分离性能

国家自然科学基金面上项目山东省"泰山学者"建设工程专项山东省高等学校青创人才引育计划山东省自然科学基金面上项目

52074161tsqn2022111772021-青创-30613019ZR2022ME173

2024

10.16082/j.cnki.issn.1001-4578.2024.06.010

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(6)
  • 23