晃动对槽盘式再分布器性能的影响  

Influence of sloshing on the performance of trough plate redistributor

作　　者：唐建峰[1,2] 崔健[1,3] 邢庆艳 张伟明 金新明 马鹏飞 Tang Jianfeng;Cui Jian;Xing Qingyan;Zhang Weiming;Jin Xinming;Ma Pengfei(College of Pipeline and Civil Engineering, China University of Petroleum - Huadong, Qingdao, Shandong 266580, China;Shandong Key Laboratory of Oil ＆ Gas Storage and Transportation Technology, China University of Petro- leum - Huadong, Qingdao, Shandong 266580, China;Shandong Company of Evergrande Group, Zibo, Shandong 255000, China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院 [2]中国石油大学(华东)山东省油气储运安全省级重点实验室 [3]恒大集团山东公司

出　　处：《天然气工业》2018年第6期105-114,共10页Natural Gas Industry

基　　金：中华人民共和国工业和信息化部科研项目"天然气预处理用大型塔器研制"(编号:工信部联装[2014]495号)

摘　　要：填料塔是海上浮式天然气生产储卸装置的组件之一。为了保证气液再分布器在填料塔内发挥良好的再分布性能,采用水力学实验和流体力学数值模拟相结合的方法,建立了一套能够实现不同晃动工况、不同偏流进液形式的实验装置和与之对应的数值计算模型,利用实验结果对模拟进行验证,并对实验结果和模拟结果进行分析,进而对传统槽盘式再分布器在静止、晃动及不同偏流进液工况下的性能进行了研究。结果表明:(1)静止工况下,传统槽盘式再分布器各喷淋点的出液量基本相同,不均匀度数值为10-2数量级,均布性很好;(2)再分布器再均布效果下降的主要原因是液体偏移造成的液位高低差异;(3)静止、横摇和纵摇工况下,进液偏流程度的改变对槽盘式再分布器均布效果的影响程度很小,晃动5°时全区域进液和2/3区域进液情况下的整体孔口流量不均匀度差值小于5%;(4)传统槽盘式再分布器的整体孔口流量受横摇和纵摇影响较为严重,横摇5°工况下整体孔口流量不均匀度增大至0.5以上,纵摇5°工况下增大至0.3以上,晃动5°工况下,无论全区域均匀进液还是偏流进液,槽盘式再分布器出口均布效果均较差,受海上工况影响较大。结论认为,传统槽盘式再分布器对海上晃动工况适应性较差。A packed tower is one of the components of deepsea floating natural gas production, storage and unloading devices. In order to ensure the good redistribution performance of a gas-liquid redistributor in the packed tower, we developed a set of experimental devices which can realize different sloshing conditions and different bias current incoming forms and a corresponding numerical calculation model by combining hydraulics experiments with hydromechanics numerical simulation. Then, the simulation results were verified by using the experimental results, and simulation results and experimental results were analyzed. Finally, the performance of the traditional trough plate redistributor was investigated in the working conditions of quiescence, sloshing and different bias current incoming. And the following research results were obtained. First, in the working condition of quiescence, the liquid flow rate of different sprinkling points on the traditional trough plate redistributor is basically the same and the uniform distribution is presented with the non-uniformity in the order of 10–2. Second, the reason for the uniform redistribution deterioration of the redistributor is mainly the liquid level difference caused by the liquid migration. Third, in the working conditions of quiescence, rolling and pitching, the uniform distribution of trough plate distributor is rarely affected by the change of bias current degree of the incoming liquid. In the working condition of sloshing 5°, the non-uniformity difference of the overall orifice flow rate between the liquid incoming in the whole area and that in 2/3 area is less than 5%. Fourth, the non-uniformity of the overall orifice flow rate in the trough plate redistributor is more affected by rolling and pitching. The non-uniformity of the overall orifice flow rate rises to over 0.5 in the working condition of rolling 5° and over 0.3 in pitching 5°. It is indicated that in the working condition of sloshing 5°, the uniform distribution of trough plate distributor is poo

关 键 词：FLNG 填料塔 槽盘式再分布器 横摇 纵摇 偏流 数值模拟 不均匀度 

分 类 号：TE95[石油与天然气工程—石油机械设备]