水力旋流器对海底天然气水合物混合浆体分离提纯
发布时间：2018-08-24 17:56
【摘要】：针对我国水合物海底分离部分的技术空缺,对国内外现有的海底分离技术进行分析总结,并结合海底深水浅层天然气水合物固态流化绿色开采技术,设计了一种适合于天然气水合物海底预分离的工艺,并利用水力旋流器对水合物浆体进行分离。建立水力旋流器的力学模型,基于雷诺应力模型研究了一种适合固-固-液三相流的流场模拟分析方法,并通过数值模拟得到了旋流器内部流场的相应参数,证实水力旋流器对海底水合物分离的可行性与可靠性。通过改变混合浆体中颗粒粒径、进给速度、进给混合浆体中泥砂体积分数以及水力旋流器的锥角,分析水力旋流器分离效率的影响规律,得到了在颗粒粒径为10~90μm的工况下,最优的分离效率的粒径为50~70μm;进给速度为7 m/s左右,泥砂体积分数为25%左右。
[Abstract]:In view of the lack of technology in the seabed separation of hydrate in China, the existing seabed separation technology at home and abroad is analyzed and summarized, and combined with the solid fluidized green mining technology of shallow gas hydrate in deep seabed. A process suitable for the pre-separation of natural gas hydrate is designed, and the hydrate slurry is separated by hydrocyclone. The mechanical model of hydrocyclone is established. Based on the Reynolds stress model, a flow field simulation method suitable for solid-liquid three-phase flow is studied, and the corresponding parameters of the flow field in the hydrocyclone are obtained by numerical simulation. The feasibility and reliability of hydrocyclone for the separation of submarine hydrates are confirmed. By changing particle size, feed rate, volume fraction of mud sand in mixed slurry and cone angle of hydrocyclone, the influence law of separation efficiency of hydrocyclone is analyzed. The results show that the particle size is 1090 渭 m. The optimum separation efficiency is 5070 渭 m, the feed rate is about 7 m / s, and the volume fraction of mud sand is about 25%.
【作者单位】： 西南石油大学机电工程学院;
【基金】：中国工程院自然基金资助项目(2013-04-ZCQ-002) 国家级重点实验室开放基金资助项目(PLN1418)
【分类号】：TE53
[Abstract]:In view of the lack of technology in the seabed separation of hydrate in China, the existing seabed separation technology at home and abroad is analyzed and summarized, and combined with the solid fluidized green mining technology of shallow gas hydrate in deep seabed. A process suitable for the pre-separation of natural gas hydrate is designed, and the hydrate slurry is separated by hydrocyclone. The mechanical model of hydrocyclone is established. Based on the Reynolds stress model, a flow field simulation method suitable for solid-liquid three-phase flow is studied, and the corresponding parameters of the flow field in the hydrocyclone are obtained by numerical simulation. The feasibility and reliability of hydrocyclone for the separation of submarine hydrates are confirmed. By changing particle size, feed rate, volume fraction of mud sand in mixed slurry and cone angle of hydrocyclone, the influence law of separation efficiency of hydrocyclone is analyzed. The results show that the particle size is 1090 渭 m. The optimum separation efficiency is 5070 渭 m, the feed rate is about 7 m / s, and the volume fraction of mud sand is about 25%.
【作者单位】： 西南石油大学机电工程学院;
【基金】：中国工程院自然基金资助项目(2013-04-ZCQ-002) 国家级重点实验室开放基金资助项目(PLN1418)
【分类号】：TE53
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