| 摘要 |
An atmosphere of nitrogen containing hydrogen is generated by cracking ammonia and recycling a previously generated atmosphere that already had been used. The atmosphere generated by cracking, and the recovered atmosphere that previously had been used, are subjected in a reactor to a catalytic treatment at a temperature between 0 DEG to 600 DEG C and then, after passing through a refrigeration arrangement, the resultant atmosphere is prepared for use. As one example, the atmosphere is adapted to be used as a protective atmosphere for metallurgical heat-treating furnaces.
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