A successful case of hydrocarbon dew point analysis during mixing of natural gases in transmission pipeline
来源期刊：中南大学学报(英文版)2013年第9期
论文作者：WANG Wei(王玮) DUAN Ji-miao(段纪淼) LI Ming(李明) XIN Peng(信鹏) SHI Bo-hui(史博会) ZHANG Wen-wei(张文伟) GONG Jing(宫敬)
文章页码：2454 - 2458
Key words：natural gas; mixing proportion; phase behaviour; hydrocarbon dew point; liquid condensation
Abstract: The occurrence of liquid condensation in natural gas accounts for new challenges during the interoperability between transmission networks, where condensation would lead to higher pressure drops, lower line capacity and may cause safety problem. A successful case of hydrocarbon dew point (HCDP) analysis is demonstrated during the mixing of natural gases in the transmission pipeline. Methods used to predict the HCDP are combined with equations of state (EOS) and characterization of C6+ heavy components. Predictions are compared with measured HCDP with different concentrations of mixed gases at a wide range of pressure and temperature scopes. Software named “PipeGasAnalysis” is developed and helps to systematic analyze the condensation problem, which will provide the guidance for the design and operation of the network.
WANG Wei(王玮)1, DUAN Ji-miao(段纪淼)1, LI Ming(李明)1, XIN Peng(信鹏)2, SHI Bo-hui(史博会)1, ZHANG Wen-wei(张文伟)2, GONG Jing(宫敬)1
(1. Beijing Key Laboratory of Urban Oil & Gas Distribution Technology, China University of Petroleum,
Beijing 102249, China;
2. China Petroleum Pipeline Engineering Corporation, China National Petroleum Corporation,
Langfang 065000, China)
Abstract:The occurrence of liquid condensation in natural gas accounts for new challenges during the interoperability between transmission networks, where condensation would lead to higher pressure drops, lower line capacity and may cause safety problem. A successful case of hydrocarbon dew point (HCDP) analysis is demonstrated during the mixing of natural gases in the transmission pipeline. Methods used to predict the HCDP are combined with equations of state (EOS) and characterization of C6+ heavy components. Predictions are compared with measured HCDP with different concentrations of mixed gases at a wide range of pressure and temperature scopes. Software named “PipeGasAnalysis” is developed and helps to systematic analyze the condensation problem, which will provide the guidance for the design and operation of the network.
Key words:natural gas; mixing proportion; phase behaviour; hydrocarbon dew point; liquid condensation
