發(fā)布時間：2018-03-30 19:26

  本文選題：天然氣　切入點：液化　出處：《化工進展》2017年04期

【摘要】：近年來,海上浮式液化天然氣設備成為研究熱點,液體分布器作為脫酸塔器中關鍵的塔內(nèi)件之一,目前對其在海上晃動工況下的結(jié)構設計研究較少。本文選取出口數(shù)為52個的1.2m排管式液體分布器作為研究對象,利用晃動平臺和水循環(huán)系統(tǒng)組成的實驗裝置,對液體分布器開展靜止、橫搖5°和縱搖5°的水力學實驗,通過改變噴淋密度,分析在晃動工況中,具有不同出口直徑的排管式液體分布器各支管孔口流量分布和整體孔口流量分布的變化情況,結(jié)合孔口流速的合理范圍以及孔口流量不均勻度較靜止工況下的增大程度,確定出晃動時在各種噴淋密度條件下最優(yōu)的孔口直徑。結(jié)果表明:排管式液體分布器在小尺寸孔徑下受晃動的影響程度更小,但是出口流速較大;晃動5°以內(nèi)的條件下,噴淋密度分別為4.4m~3/(m~2·h)、8.8m~3/(m~2·h)和13.2m~3/(m~2·h)左右時,孔徑分別設計為4mm、6mm和8mm可以使排管式液體分布器的孔口流速落在合理范圍內(nèi)并且維持較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 擄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.
【作者單位】： 中國石油大學(華東)儲運與建筑工程學院;中國石油大學(華東)山東省油氣儲運安全省級重點實驗室;中海石油氣電集團技術研發(fā)中心;
【基金】：工信部聯(lián)裝項目([2014]495)
【分類號】：TE95

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