Chemistry of inorganic compounds – Nitrogen or compound thereof – Oxygen containing
Patent
1981-08-24
1982-09-14
Vertiz, O. R.
Chemistry of inorganic compounds
Nitrogen or compound thereof
Oxygen containing
423388, 568338, 568383, C01B 2114
Patent
active
043495206
ABSTRACT:
A mixture of ketoxime such as methyl ethyl ketone oxime (MEKO), an inorganic acid such as sulfuric acid and optionally water is fed to an intermediate point of a fractional distillation column. Steam is fed to the base of the column and operating conditions are sufficient to produce the corresponding ketone (e.g. methyl ethyl ketone) or its water azeotrope as the overhead product and the corresponding hydroxylammonium salt (e.g. the sulfate) as the bottoms. Crystallization of the salt from the bottoms leaves a mother liquor which may be recycled to a reboiler from which the steam is generated.
REFERENCES:
patent: 2414142 (1947-01-01), Dreyfus
patent: 3105741 (1963-10-01), Moore et al.
Bonfield John H.
Sifniades Stylianos
Ulmer Harry E.
Allied Corporation
Doernberg Alan M.
Fuchs Gerhard H,.
Langel Wayne A.
Vertiz O. R.
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