Conclusions
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1.
We investigated a new technique of producing H2−N2 protective atmospheres from natural gas that removes carbon dioxide and water vapor from the combustion products by means of zeolite.
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2.
The results of the investigation of the adsorption process made it possible to determine the technological and design parameters for commercial apparatus of this type.
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3.
This new technique reduces operating and capital costs and produces a protective atmosphere with <0.005% CO2, <0.006% CO, and humidity corresponding to a dew point of −50°C.
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Literature cited
B. M. Éstrin, Production and Use of Controlled Atmospheres (for Heat Treating Steel) [in Russian], Metallurgiya, Moscow (1973), p. 130.
R. Mayer and Th. Schmidt, Härterei Technische Mitteilungen,26, No. 2, 85 (1971).
Additional information
TsENTRO ÉNERGOChERMET. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 69–71, March, 1976.
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Éstrin, B.M., Bryzgalin, V.N. & Bakhirev, V.E. Apparatus for producing pure nitrogen — hydrogen atmosphere from natural gas. Met Sci Heat Treat 18, 268–270 (1976). https://doi.org/10.1007/BF00663498
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DOI: https://doi.org/10.1007/BF00663498