Chemistry of inorganic compounds – Nitrogen or compound thereof – Carbon containing
Patent
1980-10-02
1982-05-04
Vertiz, O. R.
Chemistry of inorganic compounds
Nitrogen or compound thereof
Carbon containing
564259, C01C 308
Patent
active
043281982
ABSTRACT:
The process relates to hydroxylammonium salts.
Cyclic process for the preparation and processing of a hydroxylammonium salt solution, in which an aqueous acid reaction medium is kept in circulation between a hydroxylammonium salt synthesis zone and an oxime synthesis zone, and in which the circulating liquid is continuously supplied with nitrogen monoxide, which serves as nitrogen source for the formation of the hydroxylammonium salt, and which is converted into hydroxylamine by catalytic reduction with hydrogen.
The circulating liquid is, before it enters the hydroxylammonium salt synthesis zone, subjected to a stripping process by bringing the circulating liquid via a heat-exchanging surface in heat-exchange with nitrogen monoxide containing water vapor, upon which the water vapor condenses, and the remaining gas containing nitrogen monoxide as nitrogen source is used in the reduction of nitrogen monoxide to hydroxylamine.
REFERENCES:
patent: 3641150 (1972-02-01), de Roolj
patent: 4122153 (1978-10-01), Haasen et al.
Perry, Chemical Engineers' Handbook, McGraw-Hill Book Co., Inc., Third Edition (1950), p. 456.
Langel Wayne A.
Stamicarbon B.V.
Vertiz O. R.
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