Simultaneous destruction of trace components in the reaction off

Details Simultaneous destruction of trace components in the reaction off Simultaneous destruction of trace components in the reaction off

1981-10-01

1982-11-23

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423239, 423245, 423355, 423415A, 544201, B01D 5336

Patent

active

043605044

ABSTRACT:
The reaction off-gas from the synthesis of melamine consists, after separating off the melamine, mainly of ammonia and carbon dioxide, with traces of hydrogen cyanide, isocyanic acid, urea and residual melamine. To remove these trace components, the off-gas is passed over a catalyst, containing copper oxide and/or iron oxide, in the presence of steam at from 100.degree. to 500.degree. C.

REFERENCES:
patent: 2780513 (1957-02-01), Marzluff
patent: 2817580 (1957-12-01), Marsh et al.
patent: 3321603 (1967-04-01), Hamprecht et al.
patent: 3386999 (1968-06-01), Manes
patent: 3723430 (1973-03-01), Kokubo et al.
patent: 3878289 (1975-04-01), Beavon
patent: 4120667 (1978-10-01), Gettert et al.

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