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

发布时间：2018-03-30 19:26

本文选题：天然气　切入点：液化　出处：《化工进展》2017年04期

【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4.4m~3/(m~2·h)、8.8m~3/(m~2·h)和13.2m~3/(m~2·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。
[Abstract]:In recent years, floating liquefied natural gas (LNG) equipment on the sea has become a research hotspot, and liquid distributor is one of the key tower internals in the deacidification tower. At present, there is little research on the structure design under the condition of offshore sloshing. In this paper, a 1.2m tube liquid distributor with 52 outlet numbers is selected as the research object, and an experimental device composed of sloshing platform and water circulation system is used. The static, rolling and pitching hydraulics experiments were carried out on the liquid distributor. By changing the spray density, it was analyzed in the sloshing condition. The variation of the flow distribution and the flow distribution of the whole orifice in the liquid distributor with different outlet diameters, combined with the reasonable range of the flow velocity of the orifice and the increasing degree of the inhomogeneity of the flow rate of the orifice compared with that under the static condition, The optimum orifice diameter for sloshing under various spray densities is determined. The results show that the liquid distributor is less affected by sloshing under small aperture, but the velocity of outlet is larger, and under the condition of less than 5 掳sloshing, When the spray density is about 8. 8mg / h and 13.2m~3/(m~2 / h, respectively, the pore diameter of 4 mm or 6 mm and 8mm can make the flow velocity of the outlet of the outlet liquid distributor fall within a reasonable range and maintain the high distribution performance of the orifice flow.
【作者单位】：中国石油大学(华东)储运与建筑工程学院;中国石油大学(华东)山东省油气储运安全省级重点实验室;中海石油气电集团技术研发中心;
【基金】：工信部联装项目([2014]495)
【分类号】：TE95

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