| 摘要 |
<p>1523203 Reducing atmosphere SOC CHIMIQUE DE LA GRANDE PAROISSE AZOTE ET PRODUITS CHIMIQUES 17 March 1976 [11 April 1975] 10795/76 Heading C1A A reducing atmosphere formed at least partly of N 2 and H 2 is generated by admixing an O 2 - containing atmosphere issuing from a metal heat treating installation with cracked NH 3 and subjecting the mix to a catalytic deoxidation, which can be initiated at ambient temperature, at between 0‹ and 600‹ C., and subsequently refrigerating the O 2 -free gas to remove condensable substances.</p> |
