Research on orifices diameter of calandria liquid distributor used in offshore deacidification tower with different spray densities

doi:10.16085/j.issn.1000-6613.2017.04.006

Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (04): 1192-1201.DOI: 10.16085/j.issn.1000-6613.2017.04.006

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Research on orifices diameter of calandria liquid distributor used in offshore deacidification tower with different spray densities

TANG Jianfeng^1,2, CUI Jian¹, XIU Yunfei¹, YANG Wengang³, JIN Xinming¹, ZHANG Weiming¹

1 College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao 266580, Shandong, China;
2 Shandong Province Key Laboratory of Oil & Gas Storage and Transportation Safety, China University of Petroleum(East China), Qingdao 266580, Shandong, China;
3 CNOOC Gas & Power Group Research & Development Center, Beijing 100028, China

Received:2016-08-24 Revised:2016-10-24 Online:2017-04-05 Published:2017-04-05

海上天然气脱酸塔内排管式液体分布器各喷淋密度下的孔径研究

唐建峰^1,2, 崔健¹, 修云飞¹, 杨文刚³, 金新明¹, 张伟明¹

1 中国石油大学(华东)储运与建筑工程学院, 山东青岛 266580;
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, 山东青岛 266580;
3 中海石油气电集团技术研发中心, 北京 100028

通讯作者: 唐建峰
作者简介:唐建峰(1973-)、男,博士,教授,从事气田集输、天然气预处理、FLNG关键设备相关研究。E-mail:tangpaper@126.com。
基金资助:
工信部联装项目（[2014]495）。

Abstract

Abstract: In recent years,floating liquefied natural gas(FLNG) has become a new field that attracts increasing attention. Study on structure design of liquid distributor which is one of the most important tower internals under the condition of sloshing is little. A calandria liquid distributor with diameter of 1.2 meters with 52 orifices was studied in this paper by utilizing experimental device consisting of a shaking platform and a water circulation system. Hydraulic experiments were carried out under the condition of static situation,roll 5 degrees and pitch 5 degrees. By changing the liquid distributor's spray density,the distribution performance's changes of the liquid distributor and its branch pipes with different orifice diameters in sloshing condition were analyzed. Combining with reasonable range of outlet velocity and outlet flow ununiformity's increasing degree that compared with static situation,optimal outlet diameter design with various spray densities under sloshing condition within 5 degrees was determined. Results showed that calandria liquid distributor with small-size orifices is influenced less by sloshing condition,but its outlet velocity is big;under the sloshing condition within 5 degrees,the orifice diameter is designed to 4mm,6mm and 8mm when the spray density is about 4.4m³/(m²·h),8.8m³/(m²·h) and 13.2m³/(m²·h),which can not only ensure that the outlet velocity is reasonable,but also can keep the good uniform performance of calandria liquid distributor.

Key words: natural gas, liquefaction, column, calandria liquid distributor, ununiformity

摘要： 近年来，海上浮式液化天然气设备成为研究热点，液体分布器作为脱酸塔器中关键的塔内件之一，目前对其在海上晃动工况下的结构设计研究较少。本文选取出口数为52个的1.2m排管式液体分布器作为研究对象，利用晃动平台和水循环系统组成的实验装置，对液体分布器开展静止、横摇5°和纵摇5°的水力学实验，通过改变喷淋密度，分析在晃动工况中，具有不同出口直径的排管式液体分布器各支管孔口流量分布和整体孔口流量分布的变化情况，结合孔口流速的合理范围以及孔口流量不均匀度较静止工况下的增大程度，确定出晃动时在各种喷淋密度条件下最优的孔口直径。结果表明：排管式液体分布器在小尺寸孔径下受晃动的影响程度更小，但是出口流速较大；晃动5°以内的条件下，喷淋密度分别为4.4m³/（m²·h）、8.8m³/（m²·h）和13.2m³/（m²·h）左右时，孔径分别设计为4mm、6mm和8mm可以使排管式液体分布器的孔口流速落在合理范围内并且维持较高的孔口流量均布性能。

关键词: 天然气, 液化, 塔器, 排管式液体分布器, 不均匀度

CLC Number:

TE644

TANG Jianfeng, CUI Jian, XIU Yunfei, YANG Wengang, JIN Xinming, ZHANG Weiming. Research on orifices diameter of calandria liquid distributor used in offshore deacidification tower with different spray densities[J]. Chemical Industry and Engineering Progress, 2017, 36(04): 1192-1201.

唐建峰, 崔健, 修云飞, 杨文刚, 金新明, 张伟明. 海上天然气脱酸塔内排管式液体分布器各喷淋密度下的孔径研究[J]. 化工进展, 2017, 36(04): 1192-1201.

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Research on orifices diameter of calandria liquid distributor used in offshore deacidification tower with different spray densities

海上天然气脱酸塔内排管式液体分布器各喷淋密度下的孔径研究

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