晃动条件下孔槽式液体分布器的结构优化
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摘要
二级孔槽式液体分布器具有分布质量高、操作弹性大等特点,但对水平度的要求极高,为提高其在海上晃动工况下的适应性,需要对传统结构进行优化。基于各种晃动形式对孔槽式液体分布器的液体分布性能影响的相关研究,采用Fluent模拟软件对受晃动影响更为严重的二级槽进行流体力学数值模拟,找出晃动条件下二级槽的液体分布质量下降的原因,提出相应的结构优化措施并模拟验证。结果表明:增大二级槽入口两侧孔口的直径和增加竖直隔板,可以有效提高孔槽式液体分布器在静止和晃动条件下的液体分布质量;增加缓冲挡板,可以提高静止条件下的液体分布质量,但会进一步恶化晃动条件下二级槽的流量均布。优化后的孔槽式液体分布器能够更好地适用于海上晃动平台或浮式生产储油卸油装置的生产需求。(图13,表3,参26)
The two-trough liquid distributor is advantageous with high-quality distribution performance and big operational flexibility, but its requirement on levelness is extremely strict. In order to increase the adaptability of trough liquid distributor to offshore sloshing conditions, therefore, its traditional structures shall be optimized. In this paper, the studies on the effects of various sloshing forms on the liquid distribution performance of trough liquid distributor were reviewed. Then, Fluent software was adopted to carry out fluid dynamics numerical simulation on the secondary trough which is more affected by the sloshing. Accordingly, the reasons for the liquid distribution quality deterioration of secondary trough in the sloshing condition were figured out, and the corresponding structure optimization measures were proposed and verified by means of simulation method. It is indicated that the liquid distribution quality of trough liquid distributor in the conditions of stillness and sloshing can be improved effectively by increasing the diameter of the orifices on both sides of the inlet of secondary trough or adding vertical baffles. If buffer baffles are added, the liquid distribution quality in the stillness condition can be improved, but the flow uniformity of secondary trough in the sloshing condition will be deteriorated further. The optimized trough liquid distributor is better adaptive to offshore sloshing platforms or floating production, storage and offloading devices.(13 Figures, 3 Tables, 26 References)
The two-trough liquid distributor is advantageous with high-quality distribution performance and big operational flexibility, but its requirement on levelness is extremely strict. In order to increase the adaptability of trough liquid distributor to offshore sloshing conditions, therefore, its traditional structures shall be optimized. In this paper, the studies on the effects of various sloshing forms on the liquid distribution performance of trough liquid distributor were reviewed. Then, Fluent software was adopted to carry out fluid dynamics numerical simulation on the secondary trough which is more affected by the sloshing. Accordingly, the reasons for the liquid distribution quality deterioration of secondary trough in the sloshing condition were figured out, and the corresponding structure optimization measures were proposed and verified by means of simulation method. It is indicated that the liquid distribution quality of trough liquid distributor in the conditions of stillness and sloshing can be improved effectively by increasing the diameter of the orifices on both sides of the inlet of secondary trough or adding vertical baffles. If buffer baffles are added, the liquid distribution quality in the stillness condition can be improved, but the flow uniformity of secondary trough in the sloshing condition will be deteriorated further. The optimized trough liquid distributor is better adaptive to offshore sloshing platforms or floating production, storage and offloading devices.(13 Figures, 3 Tables, 26 References)
引文
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[12]王志祥,于颖,关琦.槽式液体分布器的设计及应用[J].化工机械,1999,26(2):92-94.WANG Z X,YU Y,GUAN Q.Design and application of the trough liquid distributors[J].Chemical Engineering&Machinery,1999,26(2):92-94.
[13]王一军,张斌,于清,等.新型槽式液体分布器的设计与分析[J].新疆石油天然气,2006,2(3):93-97.WANG Y J,ZHANG B,YU Q,et al.Design and analysis of a new type of channel liquid distributors[J].Xinjiang Oil&Gas,2006,2(3):93-97.
[14]林秀锋,陈桂珍.液体分布器分布质量评价体系综述[J].化学工程,2008,36(12):74-78.LIN X F,CHEN G Z.Overview on evaluation system of liquid distributor quality[J].Chemical Engineering(China),2008,36(12):74-78.
[15]LOTHAR S.A new method to assess liquid distributor quality[J].Chemical Engineering and Processing,2006,45:1011-1017.
[16]王丽华,张吕鸿,周海鹰,等.槽式液体分布器进液情况的CFD模拟及试验[J].石油化工设备,2005,34(5):12-15.WANG L H,ZHANG L H,ZHOU H Y,et al.Test and CFDsimulation of liquid dispersion in slotted liquid distributor[J].Petro-Chemical Equipment,2005,34(5):12-15.
[17]李焱,喻西崇,王春升,等.浮式液化天然气船FLNG工艺系统关键设备海上适应性分析[J].中国造船,2016(增刊1):154-161.LI Y,YU X C,WANG C S,et al.Analysis on the marine adaptability of key equipment of FLNG process system for floating liquefied natural gas vessel[J].Shipbuilding of China,2016(S1):154-161.
[18]唐建峰,杨帆,崔健,等.晃动对FLNG排管式液体分布器性能的影响[J].天然气工业,2016,36(1):123-128.TANG J F,YANG F,CUI J,et al.Effects of sloshing on the performance of FLNG calandria liquid distributors[J].Natural Gas Industry,2016,36(1):123-128.
[19]胡晓明,李万莉,赵志国,等.液罐车罐体内液体横向晃动研究[J].应用力学学报,2013,30(5):641-646.HU X M,LI W L,ZHAO Z G,et al.Horizontal fluid sloshing analysis in the body of tank truck[J].Chinese Journal of Applied Mechanics,2013,30(5):641-646.
[20]王庄,李遇春,王立时.不同截面水槽流体参数晃动的SPH模拟[J].计算物理,2013,30(5):642-648.WANG Z,LI Y C,WANG L S.SPH simulations of parametric sloshing in various shape aqueducts[J].Chinese Journal of Computational Physics,2013,30(5):642-648.
[21]段文广.基于FLUENT的液体分布器内部流场分析[J].现代制造技术与装备,2009(2):17-18.DUAN W G.Analysis of liquid distributor internal flow based on FLUENT[J].Modern Manufacturing Technology and Equipment,2009(2):17-18.
[22]ZHANG L H,GAO G H,SUI H,et al.CFD simulation and experimental validation of fluid flow in pre-distributor[J].Chinese Journal of Chemical Engineering,2011,19(5):815-820.
[23]徐兴平,黄东升,方华灿.充液结构内液体晃动及阻晃机理试验研究[J].中国海洋平台,1994(增刊1):165-168.XU X P,HUANG D S,FANG H C.Experimental study on liquid and retarding mechanism in liquid filled structures in shaking condition[J].China Offshore Platform,1994(S1):165-168.
[24]靳玉林.具有新型防晃结构贮箱的液体晃动动力学分析[D].哈尔滨:哈尔滨工业大学,2013:1-3.JIN Y L.The new anti-sloshing structure in the tank and analysis of liquid sloshing dynamics[D].Harbin:Harbin Institute of Technology,2013:1-3.
[25]唐建峰,金新明,周军逸,等.FLNG填料塔内气体分布器适应性试验[J].油气储运,2018,37(7):822-830.TANG J F,JIN X M,ZHOU J Y,et al.Compatibility test of gas distributor in the FLNG packed tower[J].Oil&Gas Storage and Transportation,2018,37(7):822-830.
[26]包春凤,许保云,艾波,等.结构型槽盘式液体分布器性能研究[J].化学工程,2016,44(4):54-58.BAO C F,XU B Y,AI B,et al.Performance of structural trough-pan liquid distributor[J].Chemical Engineering(China),2016,44(4):54-58.
[2]王翊红,黄维秋,王文捷,等.喷淋密度对吸收塔液体分布器分布性能的影响研究[J].科学技术与工程,2015,35(15):218-222.WANG Y H,HUANG W Q,WANG W J,et al.Experimental researching of the influence of sprinkle density to the liquid distribution performance of the liquid distributor in the absorption tower[J].Science Technology and Engineering,2015,35(15):218-222.
[3]李春利,闫磊,董立会,等.一种耦合CTST的新型槽盘式液体分布器性能研究[J].现代化工,2017,37(7):163-167.LI C L,YAN L,DONG L H,et al.Performance of a new groovetray liquid distribution coupling CTST[J].Modern Chemical Industry,2017,37(7):163-167.
[4]孙磊,王兵,白冰冰,等.液体分布器布液均匀性影响因素综合分析[J].山东化工,2016,45(10):76-82.SUN L,WANG B,BAI B B,et al.The comprehensive analysis of liquid distributor liquid distribution uniformity factors[J].Shandong Chemical Industry,2016,45(10):76-82.
[5]董谊仁.填料塔液体分布器的设计[J].化工生产与技术,1998(1):1-10.DONG Y R.The designing of liquid distributor in packed columns[J].Chemical Production and Technology,1998(1):1-10.
[6]李学斌,李放,陈新,等.填料塔中的液体分布器[J].氯碱工业,2006(3):44-45.LI X B,LI F,CHEN X,et al.The liquid distributor in the packed column[J].Chlor-Alkali Industry,2006(3):44-45.
[7]徐世民,张艳华,任艳军.塔填料及液体分布器[J].化学工业与工程,2006,23(1):75-80.XU S M,ZHANG Y H,REN Y J.Packings and liquid distributor in packed column[J].Chemical Industry and Engineering,2006,23(1):75-80.
[8]陈桂珍.填料层内液体的分布及液体分布器的选型[J].深冷技术,2001(1):10-13.CHEN G Z.Liquid distribution in the packing layers and type selection of liquid distributors[J].Cryogenic Technology,2001(1):10-13.
[9]安海静.大型填料塔槽式液体分布器的实验研究与流体力学模拟计算[D].天津:天津大学,2003:1-5.AN H J.Experimental study and CFD simulation on liquid distributor in large-scale packed column[D].Tianjin:Tianjin University,2003:1-5.
[10]宋娜.槽式液体分布器改进研究[J].科技创新与应用,2013(32):21.SONG N.Research on improvement of trough liquid distributor[J].Technology Innovation and Application,2013(32):21.
[11]孙希瑾,陈建娟,秦岭.大型填料塔液体分布器的设计应用[J].石油化工设计,2002,19(1):10-15.SUN X J,CHEN J J,QIN L.Design and application of liquid distributor in large-sized packing tower[J].Petrochemical Design,2002,19(1):10-15.
[12]王志祥,于颖,关琦.槽式液体分布器的设计及应用[J].化工机械,1999,26(2):92-94.WANG Z X,YU Y,GUAN Q.Design and application of the trough liquid distributors[J].Chemical Engineering&Machinery,1999,26(2):92-94.
[13]王一军,张斌,于清,等.新型槽式液体分布器的设计与分析[J].新疆石油天然气,2006,2(3):93-97.WANG Y J,ZHANG B,YU Q,et al.Design and analysis of a new type of channel liquid distributors[J].Xinjiang Oil&Gas,2006,2(3):93-97.
[14]林秀锋,陈桂珍.液体分布器分布质量评价体系综述[J].化学工程,2008,36(12):74-78.LIN X F,CHEN G Z.Overview on evaluation system of liquid distributor quality[J].Chemical Engineering(China),2008,36(12):74-78.
[15]LOTHAR S.A new method to assess liquid distributor quality[J].Chemical Engineering and Processing,2006,45:1011-1017.
[16]王丽华,张吕鸿,周海鹰,等.槽式液体分布器进液情况的CFD模拟及试验[J].石油化工设备,2005,34(5):12-15.WANG L H,ZHANG L H,ZHOU H Y,et al.Test and CFDsimulation of liquid dispersion in slotted liquid distributor[J].Petro-Chemical Equipment,2005,34(5):12-15.
[17]李焱,喻西崇,王春升,等.浮式液化天然气船FLNG工艺系统关键设备海上适应性分析[J].中国造船,2016(增刊1):154-161.LI Y,YU X C,WANG C S,et al.Analysis on the marine adaptability of key equipment of FLNG process system for floating liquefied natural gas vessel[J].Shipbuilding of China,2016(S1):154-161.
[18]唐建峰,杨帆,崔健,等.晃动对FLNG排管式液体分布器性能的影响[J].天然气工业,2016,36(1):123-128.TANG J F,YANG F,CUI J,et al.Effects of sloshing on the performance of FLNG calandria liquid distributors[J].Natural Gas Industry,2016,36(1):123-128.
[19]胡晓明,李万莉,赵志国,等.液罐车罐体内液体横向晃动研究[J].应用力学学报,2013,30(5):641-646.HU X M,LI W L,ZHAO Z G,et al.Horizontal fluid sloshing analysis in the body of tank truck[J].Chinese Journal of Applied Mechanics,2013,30(5):641-646.
[20]王庄,李遇春,王立时.不同截面水槽流体参数晃动的SPH模拟[J].计算物理,2013,30(5):642-648.WANG Z,LI Y C,WANG L S.SPH simulations of parametric sloshing in various shape aqueducts[J].Chinese Journal of Computational Physics,2013,30(5):642-648.
[21]段文广.基于FLUENT的液体分布器内部流场分析[J].现代制造技术与装备,2009(2):17-18.DUAN W G.Analysis of liquid distributor internal flow based on FLUENT[J].Modern Manufacturing Technology and Equipment,2009(2):17-18.
[22]ZHANG L H,GAO G H,SUI H,et al.CFD simulation and experimental validation of fluid flow in pre-distributor[J].Chinese Journal of Chemical Engineering,2011,19(5):815-820.
[23]徐兴平,黄东升,方华灿.充液结构内液体晃动及阻晃机理试验研究[J].中国海洋平台,1994(增刊1):165-168.XU X P,HUANG D S,FANG H C.Experimental study on liquid and retarding mechanism in liquid filled structures in shaking condition[J].China Offshore Platform,1994(S1):165-168.
[24]靳玉林.具有新型防晃结构贮箱的液体晃动动力学分析[D].哈尔滨:哈尔滨工业大学,2013:1-3.JIN Y L.The new anti-sloshing structure in the tank and analysis of liquid sloshing dynamics[D].Harbin:Harbin Institute of Technology,2013:1-3.
[25]唐建峰,金新明,周军逸,等.FLNG填料塔内气体分布器适应性试验[J].油气储运,2018,37(7):822-830.TANG J F,JIN X M,ZHOU J Y,et al.Compatibility test of gas distributor in the FLNG packed tower[J].Oil&Gas Storage and Transportation,2018,37(7):822-830.
[26]包春凤,许保云,艾波,等.结构型槽盘式液体分布器性能研究[J].化学工程,2016,44(4):54-58.BAO C F,XU B Y,AI B,et al.Performance of structural trough-pan liquid distributor[J].Chemical Engineering(China),2016,44(4):54-58.