固态流化双射流开采天然气水合物颗粒回收研究
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西南石油大学

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TE53

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国家自然科学基金项目(面上项目,重点项目,重大项目),创新研究群体科学基金,国家重点基础研究发展计划(973计划)


Study on the recovery of gas hydrate particles with double jet extraction in solid fluidization exploitation
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Southwest Petroleum University

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    摘要:

    针对当前固态流化开采水合物过程中颗粒回收效率低下,创新性地提出了双射流回收方案,并采用试验与数值模拟相结合方法研究回收流场和颗粒回收率。结果表明:随着前端射流和后端射流与回收孔的距离分别增加,双射流之间的流场效果减弱导致颗粒沉积现象愈发明显;当后端射流与回收孔的距离为300 mm时,随着前端射流与回收孔的距离增大导致颗粒回收率先增大后减小;当前端射流与回收孔的距离300 mm时,随着后端射流与回收孔的距离增大导致回收率先增大后减小。本文研究结果进一步丰富了水合物开采机理,有助于优化开采工具的设计。

    Abstract:

    In view of the low particle recovery efficiency in the current solid fluidized hydrate mining process, a double-jet recovery scheme was innovatively proposed, and the recovery flow field and particle recovery rate were studied by combining experimental and numerical simulation methods. The results show that with the increase in the distance between the front-end jetting and the recovery hole and the distance between the back-end jetting and the recovery hole, the flow field effect between the double jets weakens, resulting in the particle deposition phenomenon becoming more obvious. When the distance between the back-end jetting and the recovery hole is 300 mm, the particle recovery increases first and then decreases with the increase in the distance between the front-end jetting and the recovery hole. When the distance between the front-end jetting and the recovery hole is 300 mm, the recovery increases first and then decreases with the increase in the distance between the back-end jetting and the recovery hole. The results of this paper further enrich the mechanism of hydrate mining and help optimize the design of mining tools.

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钟林,张文超,王国荣,等. 固态流化双射流开采天然气水合物颗粒回收研究[J]. 科学技术与工程, , ():

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  • 收稿日期:2024-03-25
  • 最后修改日期:2024-05-21
  • 录用日期:2024-06-05
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