Isothermal pVTmeasurements on gas hydrocarbon mixtures using a vibrating-tube apparatus |
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| Affiliation: | 1. Institute of Chemical Technology, Prague, Department of Gas, Coke and Air Protection, Technická 5, Prague 6, 166 28, Czech Republic;2. Institute of Chemical Technology, Prague, Department of Physical Chemistry, Technická 5, Prague 6, 166 28, Czech Republic;3. Transgas, s.p. Limuzská 12/3135, Prague 10, 100 98, Czech Republic;4. Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Rozvojová 135, Prague 6, 165 02, Czech Republic;1. Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China;2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;3. Corrosion and Protection Division, Shenyang National Laboratory for Materials Science, Northeastern University;1. Chemistry Faculty, Belarusian State University, Leningradskaya 14, 220030 Mink, Belarus;2. Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305-3337, United States;3. CIQ, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal;1. Department of Physical Chemistry, University of Rostock, 18059, Dr-Lorenz-Weg 2, Rostock, Germany;2. QUILL Research Centre, The Queen’s University of Belfast, School of Chemistry and Chemical Engineering, Stranmillis Road, Belfast, Northern Ireland BT95AG, UK;3. Department of Physical Chemistry, Kazan Federal University, Kremlevskaya str. 18, 420008 Kazan, Russia;1. Department of Physical Chemistry, Kazan Federal University, 420008, Kazan, Russia;2. Institute of Chemistry, University of Rostock, 18059, Rostock, Germany;3. Department Life, Light & Matter – University of Rostock, 18051, Rostock, Germany;1. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;2. Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan;3. Materials and Chemical Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu 31015, Taiwan |
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| Abstract: | Measurements of the ( pρT) properties of three natural gas mixtures were carried out at temperatures from 265 K to 335 K and at pressures up to 15 MPa using a densimeter consisting mainly of a DMA 512P measuring cell and a DMA 60 evaluating unit (Anton Paar, Graz, Austria). Four isotherms {(253.15, 273.15, 293.15 and 323.15) K} and seven pressure levels from 0.1 MPa to 15 MPa were investigated for each natural gas mixture at densities ranging from 6 kg · m − 3to 212 kg · m − 3. The natural gas mixtures were two real gases from transport pipelines systems of natural gas distributors in the Czech Republic. One sample contained natural gas with nitrogen addition. Four equations of state were examined. The relative deviations of calculated density values from the EOS ranged from ( − 5.8 to 1.8) per cent. The best results were obtained from the AGA8-DC92 EOS, with the relative deviations of calculated density value being within the range ( − 0.02 to 0.02) per cent. |
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