含碰撞式分离元件塔结构优化及水力性能研究
Study on Structure Optimization and Hydraulic Performance of Tower with Collision Type Separation Elements
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- 引用格式:
-
王念榕,胡大鹏,骆成松,张哲,于洋,赵国安,巨龙,文韵豪.含碰撞式分离元件塔结构优化及水力性能研究[J].天然气与石油,2020,38(5):18-24.doi:10.3969/j.issn.1006-5539.2020.05.004
Wang Nianrong, Hu Dapeng, Luo Chengsong, Zhang Zhe, Yu Yang, Zhao Guoan Ju Long, Wen Yunhao.Study on Structure Optimization and Hydraulic Performance of Tower with Collision Type Separation Elements[J].Natural Gas and Oil,2020,38(5):18-24.doi:10.3969/j.issn.1006-5539.2020.05.004
- DOI:
- 10.3969/j.issn.1006-5539.2020.05.004
- 作者:
- 王念榕1，胡大鹏2，骆成松3，张哲1，于洋2，赵国安3，巨龙3，文韵豪1
Wang Nianrong1, Hu Dapeng2, Luo Chengsong3, Zhang Zhe1, Yu Yang2, Zhao Guoan3 Ju Long3, Wen Yunhao1
- 作者单位:
- 1. 中国石油天然气股份有限公司规划总院, 2. 大连理工大学化工学院,3. 中国石油天然气股份有限公司浙江油田分公司
PetroChina Planning and Engineering Institute, Beijing, 100083, China；2. School of Chemical Engineering, Dalian University of Technology, Dalian, 116023, China； 3. PetroChina Zhejiang Oilfield Company, Zhejiang, 310023, China
- 关键词:
- 碰撞式气液分离结构;CFD数值模拟;两相实验;分离效率;负荷性能图
Collisional gas-liquid separation structure; CFD numerical simulation; Two-phase experiment; Separation efficiency; Load performance diagram
- 摘要:
- 大通量塔可以有效降低塔体直径,节约塔器制造成本,是塔器重要的发展方向。由于塔操作点一般位于雾沫夹带线以上,故提出一种结合高效气液分离方法的塔结构。利用CFD数值模拟方法,分析了新型碰撞式气液分离结构的原理,计算了结构参数对分离效果的影响并对其结构进行优化。基于CFD分析结果,搭建实验平台,研究新型塔水力学性能,结果表明:1)分离元件层数越多、横向间距越小、纵向间距越小,此碰撞分离元件的分离效率越好,但阻力降也越大;2)综合效率和压降以及空间利用率可知,元件层数为2,且横向间距与宽度比值为1.0,纵向间距与宽度比值为0.5时,整个碰撞分离元件的效果最佳;3)当气相流量为定值时,表明改变液相流量对塔板压降无显著作用,当液相流量为定值时,塔板各层压降与气体流量正相关;4)改变液体流量对漏液线及雾沫夹带线无明显影响,且操作范围较广。因此,与传统旋流塔相比,新型含碰撞式分离元件高速塔具有塔径小、处理量大、气液分离效率高及操作范围广等优点,能够大幅降低成本,提升空间利用率,应用前景广泛。
The high-speed tower with large flux can effectively reduce the diameter of the tower body and save the producing expenditure, which is an important development direction of the tower.Since the operating point of the tower is usually above the entrainment line, a new structure combined with high efficiency gas-liquid separation method is proposed.Through CFD numerical simulation method, the principle of the new collisional gas-liquid separation structure is analyzed,the influence of structural parameters on the separation effect is calculated, and the structure is optimized.Based on the CFD analysis results, an experimental platform is built to study the hydraulic performance of the new high-speed tower.The results show that: (1) the more layers of components, the narrower the horizontal spacing and the narrower the vertical spacing, the better the separation efficiency of the collisional separator, but the stronger the drag drop.(2) Considering the comprehensive efficiency, pressure drop and space utilization, when the number of element layers is 2, the ratio of horizontal spacing to width is 1.0, and the ratio of vertical spacing to width is 0.5, the effect of the whole collisional separator is the best.(3)When the gas flow rate is a fixed value, it shows that changing the liquid phase flow rate has no significant effect on the pressure drop of the tray;when the liquid phase flow rate is a fixed value, the pressure drop of each layer of the tray increases with the increase of the gas flow rate significantly.(4) Changing the liquid flow rate has no obvious effect on the leakage line and entrainment line,and the operation range is wide, and the operation flexibility is 75%.Therefore, compared with the traditional cyclone tower, the new high-speed tower has the advantages of small diameter, large processing capacity, high gas-liquid separation efficiency and wide operation range.It can effectively reduce the cost, improve the space utilization ratio and has a wide range of application prospects.
