Process for removal of impurities in alkyl nitrite formation

Details Process for removal of impurities in alkyl nitrite formation Process for removal of impurities in alkyl nitrite formation

1987-09-29

1989-11-07

Terapane, John F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrite esters or chalcogen analogues thereof

C07C 7700

Patent

active

048794015

ABSTRACT:
A process is provided for removing impurities from the gaseous product of an alkyl nitrite production zone by contacting a portion of it with lower alcohol and oxygen to convert substantially all of the nitric oxide in that portion of the gaseous product stream to alkyl nitrite, the oxygen being present in an amount such that the mole ratio of nitric oxide to oxygen is in the range of about 4:1 to about 2:1 and the lower alcohol being present in the reaction zone such that the mole ratio of nitric oxide to lower alcohol is about 1:1 or less. A recovery stream, comprising alkyl nitrite substantially free of nitric oxide, is withdrawn from the reaction zone and at least a portion of the alkyl produced in the reaction zone is removed. A least a portion of the balance of the recovery stream from which the alkyl nitrite has been removed is purged, thereby removing impurities from the process.

REFERENCES:
patent: 2166698 (1939-07-01), Allen
patent: 2739166 (1956-03-01), Treacy
patent: 2831882 (1958-04-01), Spaeth
patent: 4353843 (1982-10-01), Doumaux, Jr. et al.
patent: 4629806 (1986-12-01), Cleveland et al.

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