A Study on Drag Reduction Agency for Gas Pipeline

Zhang Qibin; Fan Yunpeng; Lin Zhu; Zhang Li; Xu Cuizhu; Han Wenli

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자료유형: 학술저널

저자정보: Zhang Qibin Fan Yunpeng Lin Zhu Zhang Li Xu Cuizhu Han Wenli

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제7권 제5호

발행연도: 2008.1

수록면: 288 - 292 (5page)

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The drag reduction agency (DRA) for gas pipeline, a novel method used for reducing friction or drag on a gas flowing to increase the transmission efficiency of gas pipeline, is a more flexible and economical technology than internal flow efficient coatings. In this paper, an effective DRA has been developed in Authors' Institute by analyzing the hydrodynamic friction resistance on internal gas pipeline and then studying the work mechanism and molecular structure of DRA. In the meantime, a group of property test for selecting DRA material has been determined, including viscosity, contact angle, volatility, corrosion, slab extending, and flow behavior in horizontal tube. The inhibition efficiency and drag reduction efficiency of the developed DRA have been investigated finally based on the relevant test methods. Results of corrosion test show that the developed DRA has very good inhibition effect on mild steel by brushing a thin layer of DRA on steel specimens, giving inhibition efficiency of 91.2% and 73.1% in 3%NaCl solution and standard salt fog environment respectively. Results of drag-reducing test also show that the Colebrook formula could be used to calculate friction factors on internal pipes with DRA as the Reynolds number is in the range of 0.75×105~2.0×105. By comparing with normal industrial pipes, the friction resistance coefficient of the steel pipe with DRA on internal wall decreases by 13% and the gas flux increases by 7.3% in testing condition with Reynolds number of 2.0×105.

#drag reduction agency #natural gas pipeline #press drop

참고문헌 (4)

참고문헌 신청

/ 2004 / / CNPC Pipeline Technology Conference Corpus

Huey J. Chen / 2000 / DRA for Gas Pipelining / Oil & Gas Journal

Liu Guangwen / 2001 / Internal Flow Efficient Coatings for Natural Gas Pipeline / Petroleum Industry Press : 11 ~

Robusken / 1985 / Natural Gas Transport in Pipeline / Petroleum Industry Press : 18 ~

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