کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6630305 | 1424931 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation on natural gas hydrate dissociation from a slurry to a water-in-oil emulsion in a high-pressure flow loop
ترجمه فارسی عنوان
بررسی جداسازی هیدرات گاز طبیعی از یک دوغاب به یک امولسیون آب در روغن در یک حلقه جریان بالا فشار
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کلمات کلیدی
هیدرات گاز طبیعی، انحلال، امولسیون آب در روغن، تجمع ذرات، اطمینان جریان،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Investigations of natural gas hydrate dissociation from a slurry to a water-in-oil emulsion are conducted in a high-pressure hydrate experimental flow loop equipped with on-line microcosmic instruments including a focused beam reflectance measurement (FBRM) probe and a particle video microscope (PVM) probe. Three stages of the dissociation processes are observed and sketched in a conceptual mechanistic diagram, including initial dissociation with agglomeration, dissociation with breakage and re-aggregation, and thorough dissociation. The influences of initial pressure, flow rate, and water cut on hydrate dissociation are discussed. The pressure drop is increased by hydrate particle agglomeration, which increases the risk of hydrate plugging; thus, hydrate systems require close monitoring during the hydrate slurry dissociation process. Based on the classical kinetics theory, an improved hydrate dissociation model is developed by introducing a coupled heat- and mass-transfer influence coefficient and by considering the changes in the hydrate dissociated area based on the chord length data recorded by the FBRM probe. The intrinsic rate constant for natural gas hydrate dissociation is within the range of 1.41â¯Ãâ¯103-7.18â¯Ãâ¯104mol·Paâ1·sâ1·mâ2, and the activation energy of dissociation ranges from 68.2 to 72.3â¯kJ·molâ1. The reported investigation is significant for the application of hydrate slurries in risk-management methods to address issues of hydrate flow assurance in deep-water systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 233, 1 December 2018, Pages 743-758
Journal: Fuel - Volume 233, 1 December 2018, Pages 743-758
نویسندگان
Bo-Hui Shi, Shang-Fei Song, Xiao-Fang Lv, Wen-Qing Li, Ying Wang, Lin Ding, Yang Liu, Ju-Heng Yang, Hai-Hao Wu, Wei Wang, Jing Gong,