喷射器内含湿含硫天然气形成水合物预测

doi:10.3976/j.issn.1002-4026.2022.05.009

Abstract

Abstract:

For the continuous decrease in the wellhead pressure of natural gas containing moisture and sulfur in gas fields with high quantities of sulfur, low-pressure gases are transported owing to the surplus pressure from high-pressure gas wells via ejectors. Herein, the Fluent software is used to numerically simulate temperature and pressure profiles for single- and two-phase flows of natural gas containing moisture and sulfur in an ejector. The ZahediⅠmodel is used to predict the formation area of natural gas hydrates in the ejector. The effect of the inlet temperature of the working fluid, sulfur content, and moisture content on the formation of natural gas hydrates is predicted and analyzed. With increasing inlet temperature of the working fluid, the generation area range of natural gas hydrates in the ejector decreases. When the sulfide content is high, the generation area range of natural gas hydrates is large. The working fluid contains water droplets. The generation area of natural gas hydrates in the ejector is smaller than that under a single-phase working medium. Based on these results, measures for reducing natural gas hydrates are proposed.

Key words: natural gas containing moisture and sulfur, ejector, natural gas hydrate, formation region

CLC Number:

TK124

XU Tao, LIU Wei, WANG Zhao-liang. Prediction of hydrate formation of natural gas containing moisture and sulfur in ejector[J].Shandong Science, 2022, 35(5): 69-79.

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Prediction of hydrate formation of natural gas containing moisture and sulfur in ejector

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