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Analysis of existing small-capacity plants for natural-gas liquefaction

  • Cryogenic Engineering, Production and use of Industrial Gases, Vacuum Engineering
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Chemical and Petroleum Engineering Aims and scope

This paper is devoted primarily to thermodynamic analysis of cycles implemented in three low-capacity pilot plants for liquefaction of natural gas (in Moscow, St. Petersburg, and Yekaterinburg). In our opinion, results of the research conducted will undoubtedly be defined more precisely in possible replication of small-capacity plants, or the creation of new ones.

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Notes

  1. Actually, the existing plant is equipped with four compressors, each with an output of 900 nm3/h and a 125-kW electric motor. Overall output is 925 kg of liquid CH4/h with respect to liquid methane, and G CH4 = 4·900 nm3/h·0.667 kg/nm3 = 2401 kg/h with respect to the compressed gas. A vapor-compression spiral refrigerating machine manufactured by the Grasso Co. with a refrigerating capacity (cold capacity) of 110 kW at 238 K is used for prechilling.

  2. The actual existing plant is equipped with two compressors each with an output of 1740 nm3/h with a 295-kW electric motor. The total output is: 961 kg of liquid CH4/h with respect to liquid methane, and G CH4 = 2·1740 nm3/h·0.667 kg/nm3 = 2324 kg/h with respect to the compressed gas. A K-127 vapor-compression piston refrigerating machine with a refrigerating capacity (cold-generating capacity) of 175 kW at 238 K is used for preliminary chilling.

References

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Authors and Affiliations

  1. Bauman Moscow State Technical University, Moscow, Russia

    A. M. Arkharov, I. A. Arkharov, Yu. A. Shevich, V. Yu. Semenov, N. A. Lavrov, S. D. Krasnonosova & A. N. Kolobova

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  1. A. M. Arkharov
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  2. I. A. Arkharov
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  3. Yu. A. Shevich
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  4. V. Yu. Semenov
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  5. N. A. Lavrov
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  6. S. D. Krasnonosova
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  7. A. N. Kolobova
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 7, pp. 24–35, July, 2010.

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Arkharov, A.M., Arkharov, I.A., Shevich, Y.A. et al. Analysis of existing small-capacity plants for natural-gas liquefaction. Chem Petrol Eng 46, 397–416 (2010). https://doi.org/10.1007/s10556-010-9351-4

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  • DOI: https://doi.org/10.1007/s10556-010-9351-4

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