Optimization of Operating Parameters of a Nitrogen Liquefier Functioning as a Unit of a Liquid Methane Supercooling System

The problem of thermodynamic optimization of the operating parameters of a nitrogen liquefier functioning as a unit of a liquid methane supercooling system is identified and solved. Solution of this problem enabled determination of the following: the specific work required for liquefaction of 1 kg o...

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Bibliographic Details
Published in:Chemical and petroleum engineering 2022-07, Vol.58 (3-4), p.285-292
Main Authors: Korobkov, A. A., Kulik, M. V., Sergeev, S. S., Smorodin, A. I.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Compressors
Cryogenic Equipment
Geotechnical Engineering & Applied Earth Sciences
Heat exchange
Industrial Chemistry/Chemical Engineering
Industrial Pollution Prevention
Liquefaction
Methane
Mineral Resources
Nitrogen
Optimization
Parameters
Production and Application of Industrial Gases. Vacuum Technology
Supercooling
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Summary:The problem of thermodynamic optimization of the operating parameters of a nitrogen liquefier functioning as a unit of a liquid methane supercooling system is identified and solved. Solution of this problem enabled determination of the following: the specific work required for liquefaction of 1 kg of nitrogen in schemes with oil- and water-filled compressors, characteristics of heat exchange equipment and expansion-compression unit, and operating parameters at all calculation points. It was found that waterfilled screw compressor helps reduce specific liquefaction work by 19%. Direct flow pressure of 1.2 MPa and throttle flow fraction of 0.14 are the optimum parameters for nitrogen liquefaction.
ISSN:0009-2355
1573-8329
DOI:10.1007/s10556-022-01089-x