摘要
为提高井口天然气回收系统中气液分离器的分离性能,设计了一种适合橇装的双筒卧式气液分离器。运用数值模拟方法对气液分离器分离性能进行研究,分析内部流场、进出口压降和液滴在分离器内部的运动轨迹并计算分离器的分离效率;探究不同进口速度、进口压力对分离性能的影响规律。研究结果表明:设计的气液分离器内部流场稳定,液滴在气液分离器内部的运动轨迹比较均匀,气液分离器的分离效率可达到97.75%,对粒径大于15μm的液滴的分离效率可以达到100%;进口速度减小,液滴沉降时间增加,气体对液滴的携带效果减弱,分离性能提高;增大进口压力使得气体被压缩的程度增高,提高了气体携带液滴的能力,同时气体对液滴的浮力效果减弱,分离效率降低。研究结果可为井口天然气回收系统气液分离系统的设计、研究及应用提供一定理论基础。
To improve the separation performance of the gas-liquid separator in the wellhead gas recovery system,a double barrel horizontal gas-liquid separator suitable for skid-mounting was designed.The numerical simulation method was used to study the separation performance of the gas-liquid separator,analyze the internal flow field,inlet and outlet pressure drop,the movement trajectory of liquid droplets inside the gas-liquid separator,calculate the separation efficiency of the device,and explore the influence of different input speeds and pressures on separation performance.The study results show that the internal flow field of the designed gas-liquid separator is stable,the movement trajectory of liquid droplets inside the device is relatively uniform,the separation efficiency of it can reach 97.75%,and the separation efficiency for liquid droplets with size greater than 15μm can reach 100%.The decrease in inlet speed leads to an increase in settling time of liquid droplets,which weakens the carrying effect of gas on liquid droplets and improves the separation performance.The increase in inlet pressure increases the degree of gas compression,which improves the ability of gas to carry liquid droplets.Meanwhile,the buoyancy effect of gas on liquid droplets is weakened,and the separation efficiency is reduced.The study results provide a certain theoretical basis for the design,study and application of gas-liquid separator in wellhead gas recovery system.
作者
王梦阳
孙巧雷
冯定
马越
王健刚
Wang Mengyang;Sun Qiaolei;Feng Ding;Ma Yue;Wang Jiangang(School of Mechanical Engineering,Yangtze University;Engineering&Design Institute of CPOE;Hubei Engineering Research Center for Oil&Gas Drilling and Completion Tools)
出处
《石油机械》
北大核心
2023年第10期113-119,共7页
China Petroleum Machinery
基金
湖北省技术创新专项(重大项目)“智能油气钻采井眼轨迹控制工具研究”(2019AAA010)
湖北省自然科学基金项目“动边界作用下的深水管中管接触碰撞特性研究”(2021CFB180)
湖北省高价值知识产权培育工程(专利类)项目“海洋油气钻完井关键工具研制及应用研究”(20210101)
湖北省高等学校省级教学研究项目“海洋强国战略背景下的《海洋油气钻采设备概论》课程教学研究与实践”(2021276)。
关键词
井口气回收
气液分离器
结构设计
分离效率
wellhead gas recovery
gas-liquid separator
structural design
separation efficiency
