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| Rapidly Estimating Natural Gas Compressibility Factor | |
| 作者姓名： | Alireza Bahadori Saeid Mokhatab Brian F. Towlera |
| 作者单位： | Department of Chemical Engineering Curtin University of Technology GPO Box 1987，Perth，WA 6845，Australia，Process Technology Department Tehran Raymand Consulting Engineers，Tehran，Iran，Chemical and Petroleum Engineering Department University of Wyoming，Laramie.WY，USA |
| 基金项目： | The lead author acknowledges the Australian Depart-ment of Education, Science and Training for Endeavour International Postgraduate Research Scholarship and Office of Research ＆： Development at Curtin University of Technology, Perth, Western Australia for providing Curtin International Research Tuition Scholarship and their financial support. |
| 摘 要： | Natural gases containing sour components exhibit different gas compressibility factor(Z) behavior than do sweet gases.Therefore,a new accurate method should be developed to account for these differences.Several methods are available today for calculating the Z-factor from an cquation of state. However,these equations are more complex than the foregoing correlations,involving a large number of parameters,which require more complicated and longer computations.The aim of this study is to develop a simplified calculation method for a rapid estimating Z-factor for sour natural gases containing as much as 90% total acid gas.In this article,two new correlations are first presented for calculating the pseudo- critical pressure and temperature of the gas mixture as a function of the gas specific gravity.Then,a simple correlation on the basis of the standard gas compressibility factor chart is introduced for a quick estimation of sweet gases' compressibility factor as a function of reduced pressure and temperature.Finally,a new corrective term related to the mole fractions of carbon dioxide and hydrogen sulfide is developed. |
| 关 键 词： | 天然气 压缩因数 酸气 临界压力 临界温度 |
| 收稿时间： | 2007-06-05 |
| 修稿时间： | 2007-07-17 |
Rapidly Estimating Natural Gas Compressibility Factor |
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| Alireza Bahadori Saeid Mokhatab Brian F. Towlera.Rapidly Estimating Natural Gas Compressibility Factor[J].Journal of Natural Gas Chemistry,2007,16(4):349-353. | |
| Authors: | Alireza Bahadori Saeid Mokhatab Brian F Towler |
| Institution: | aDepartment of Chemical Engineering, Curtin University of Technology, GPO Box 1987, Perth, WA 6845, Australia bProcess Technology Department, Tehran Raymand Consulting Engineers, Tehran, Iran cChemical and Petroleum Engineering Department, University of Wyoming, Laramie, WY, USA |
| Abstract: | Natural gases containing sour components exhibit different gas compressibility factor(Z) behavior than do sweet gases.Therefore,a new accurate method should be developed to account for these differences.Several methods are available today for calculating the Z-factor from an cquation of state. However,these equations are more complex than the foregoing correlations,involving a large number of parameters,which require more complicated and longer computations.The aim of this study is to develop a simplified calculation method for a rapid estimating Z-factor for sour natural gases containing as much as 90% total acid gas.In this article,two new correlations are first presented for calculating the pseudo- critical pressure and temperature of the gas mixture as a function of the gas specific gravity.Then,a simple correlation on the basis of the standard gas compressibility factor chart is introduced for a quick estimation of sweet gases' compressibility factor as a function of reduced pressure and temperature.Finally,a new corrective term related to the mole fractions of carbon dioxide and hydrogen sulfide is developed. |
| Keywords: | natural gas compressibility factor sour gas critical pressure critical temperature |
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